/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread/fib_bench_longer-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:25:59,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:25:59,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:25:59,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:25:59,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:25:59,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:25:59,137 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:25:59,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:25:59,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:25:59,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:25:59,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:25:59,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:25:59,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:25:59,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:25:59,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:25:59,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:25:59,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:25:59,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:25:59,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:25:59,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:25:59,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:25:59,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:25:59,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:25:59,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:25:59,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 12:25:59,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 12:25:59,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 12:25:59,161 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 12:25:59,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 12:25:59,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 12:25:59,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:25:59,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:25:59,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:25:59,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:25:59,166 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:25:59,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:25:59,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:25:59,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:25:59,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:25:59,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:25:59,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:25:59,170 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 12:25:59,193 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:25:59,194 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:25:59,195 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:25:59,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:25:59,195 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:25:59,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:25:59,196 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:25:59,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:25:59,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:25:59,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:25:59,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:25:59,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:25:59,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:25:59,197 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:25:59,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:25:59,198 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:25:59,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:25:59,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:25:59,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:25:59,198 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:25:59,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:25:59,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:25:59,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:25:59,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:25:59,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:25:59,200 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:25:59,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:25:59,202 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 12:25:59,202 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:25:59,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:25:59,203 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 12:25:59,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:25:59,528 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:25:59,533 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:25:59,535 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:25:59,535 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:25:59,536 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench_longer-2.i [2020-10-16 12:25:59,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4ad8da42/e4d1ea88531f4e4c98a15727a341dc4d/FLAGf7e1e5a73 [2020-10-16 12:26:00,060 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:26:00,061 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread/fib_bench_longer-2.i [2020-10-16 12:26:00,075 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4ad8da42/e4d1ea88531f4e4c98a15727a341dc4d/FLAGf7e1e5a73 [2020-10-16 12:26:00,386 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4ad8da42/e4d1ea88531f4e4c98a15727a341dc4d [2020-10-16 12:26:00,393 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:26:00,395 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:26:00,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:26:00,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:26:00,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:26:00,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:26:00" (1/1) ... [2020-10-16 12:26:00,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c291721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:00, skipping insertion in model container [2020-10-16 12:26:00,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:26:00" (1/1) ... [2020-10-16 12:26:00,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:26:00,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:26:00,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:26:00,910 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:26:00,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:26:01,052 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:26:01,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01 WrapperNode [2020-10-16 12:26:01,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:26:01,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:26:01,054 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:26:01,054 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:26:01,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,098 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:26:01,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:26:01,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:26:01,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:26:01,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,109 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:26:01,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:26:01,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:26:01,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:26:01,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:26:01,200 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-16 12:26:01,201 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-16 12:26:01,201 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-16 12:26:01,201 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-16 12:26:01,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:26:01,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 12:26:01,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:26:01,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:26:01,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 12:26:01,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:26:01,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:26:01,204 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 12:26:01,514 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:26:01,515 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-16 12:26:01,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:26:01 BoogieIcfgContainer [2020-10-16 12:26:01,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:26:01,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:26:01,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:26:01,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:26:01,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:26:00" (1/3) ... [2020-10-16 12:26:01,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69cbee63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:26:01, skipping insertion in model container [2020-10-16 12:26:01,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (2/3) ... [2020-10-16 12:26:01,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69cbee63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:26:01, skipping insertion in model container [2020-10-16 12:26:01,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:26:01" (3/3) ... [2020-10-16 12:26:01,527 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench_longer-2.i [2020-10-16 12:26:01,539 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:26:01,540 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:26:01,548 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 12:26:01,549 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:26:01,590 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,590 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,590 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,591 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,591 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,592 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,592 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,592 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,595 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,595 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,596 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,596 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,596 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,597 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,597 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,607 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,608 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,608 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,608 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,608 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,609 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,609 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,609 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,612 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,612 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,613 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,613 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,613 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,613 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,614 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,618 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,619 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,619 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,619 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,620 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,620 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,626 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,626 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,626 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,626 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,627 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,627 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,629 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:26:01,642 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-16 12:26:01,660 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:26:01,660 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:26:01,660 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:26:01,661 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 12:26:01,661 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:26:01,661 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:26:01,661 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:26:01,661 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:26:01,674 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:26:01,675 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 57 transitions, 124 flow [2020-10-16 12:26:01,677 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 57 transitions, 124 flow [2020-10-16 12:26:01,680 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 57 transitions, 124 flow [2020-10-16 12:26:01,721 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-10-16 12:26:01,722 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 12:26:01,728 INFO L80 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 55 events. 5/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2020-10-16 12:26:01,731 INFO L117 LiptonReduction]: Number of co-enabled transitions 1032 [2020-10-16 12:26:02,785 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-16 12:26:02,867 INFO L132 LiptonReduction]: Checked pairs total: 943 [2020-10-16 12:26:02,867 INFO L134 LiptonReduction]: Total number of compositions: 50 [2020-10-16 12:26:02,874 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 42 flow [2020-10-16 12:26:02,887 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-16 12:26:02,889 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-16 12:26:02,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-16 12:26:02,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:02,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 12:26:02,898 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:02,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:02,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1506398721, now seen corresponding path program 1 times [2020-10-16 12:26:02,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:02,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742912103] [2020-10-16 12:26:02,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:03,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:03,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742912103] [2020-10-16 12:26:03,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:26:03,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:26:03,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1661438139] [2020-10-16 12:26:03,148 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:03,151 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:03,166 INFO L258 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-10-16 12:26:03,166 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:03,171 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:03,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:26:03,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:03,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:26:03,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:26:03,191 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-10-16 12:26:03,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:03,255 INFO L93 Difference]: Finished difference Result 83 states and 212 transitions. [2020-10-16 12:26:03,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:26:03,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-16 12:26:03,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:03,270 INFO L225 Difference]: With dead ends: 83 [2020-10-16 12:26:03,270 INFO L226 Difference]: Without dead ends: 54 [2020-10-16 12:26:03,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:26:03,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-16 12:26:03,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2020-10-16 12:26:03,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-16 12:26:03,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 120 transitions. [2020-10-16 12:26:03,320 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 120 transitions. Word has length 6 [2020-10-16 12:26:03,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:03,320 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 120 transitions. [2020-10-16 12:26:03,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:26:03,321 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 120 transitions. [2020-10-16 12:26:03,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:26:03,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:03,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:03,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:26:03,323 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:03,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:03,323 INFO L82 PathProgramCache]: Analyzing trace with hash 235327157, now seen corresponding path program 1 times [2020-10-16 12:26:03,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:03,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181890753] [2020-10-16 12:26:03,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:03,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:03,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181890753] [2020-10-16 12:26:03,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:26:03,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:26:03,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [821314932] [2020-10-16 12:26:03,496 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:03,497 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:03,500 INFO L258 McrAutomatonBuilder]: Finished intersection with 13 states and 16 transitions. [2020-10-16 12:26:03,500 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:03,515 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:03,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:26:03,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:03,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:26:03,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:26:03,518 INFO L87 Difference]: Start difference. First operand 50 states and 120 transitions. Second operand 5 states. [2020-10-16 12:26:03,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:03,571 INFO L93 Difference]: Finished difference Result 80 states and 186 transitions. [2020-10-16 12:26:03,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 12:26:03,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-16 12:26:03,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:03,573 INFO L225 Difference]: With dead ends: 80 [2020-10-16 12:26:03,573 INFO L226 Difference]: Without dead ends: 75 [2020-10-16 12:26:03,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:26:03,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-16 12:26:03,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 55. [2020-10-16 12:26:03,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-16 12:26:03,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 136 transitions. [2020-10-16 12:26:03,584 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 136 transitions. Word has length 8 [2020-10-16 12:26:03,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:03,588 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 136 transitions. [2020-10-16 12:26:03,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:26:03,588 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 136 transitions. [2020-10-16 12:26:03,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:26:03,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:03,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:03,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:26:03,590 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:03,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:03,591 INFO L82 PathProgramCache]: Analyzing trace with hash -244746376, now seen corresponding path program 1 times [2020-10-16 12:26:03,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:03,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151845936] [2020-10-16 12:26:03,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:03,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:03,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151845936] [2020-10-16 12:26:03,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:26:03,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:26:03,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1910904156] [2020-10-16 12:26:03,665 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:03,665 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:03,667 INFO L258 McrAutomatonBuilder]: Finished intersection with 11 states and 12 transitions. [2020-10-16 12:26:03,667 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:03,678 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:03,678 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:03,694 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [543#(and (< ~i~0 377) (<= ~j~0 2))] [2020-10-16 12:26:03,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 12:26:03,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:03,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 12:26:03,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:26:03,695 INFO L87 Difference]: Start difference. First operand 55 states and 136 transitions. Second operand 6 states. [2020-10-16 12:26:03,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:03,739 INFO L93 Difference]: Finished difference Result 83 states and 196 transitions. [2020-10-16 12:26:03,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 12:26:03,740 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-10-16 12:26:03,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:03,741 INFO L225 Difference]: With dead ends: 83 [2020-10-16 12:26:03,742 INFO L226 Difference]: Without dead ends: 77 [2020-10-16 12:26:03,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:26:03,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-16 12:26:03,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 66. [2020-10-16 12:26:03,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-16 12:26:03,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 157 transitions. [2020-10-16 12:26:03,752 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 157 transitions. Word has length 8 [2020-10-16 12:26:03,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:03,753 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 157 transitions. [2020-10-16 12:26:03,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 12:26:03,753 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 157 transitions. [2020-10-16 12:26:03,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:26:03,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:03,754 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:03,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 12:26:03,755 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:03,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:03,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1294770680, now seen corresponding path program 2 times [2020-10-16 12:26:03,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:03,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221614724] [2020-10-16 12:26:03,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:03,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:03,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221614724] [2020-10-16 12:26:03,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302903699] [2020-10-16 12:26:03,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:03,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:03,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:03,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 12:26:03,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:03,959 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 12:26:03,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:03,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:03,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2020-10-16 12:26:03,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1485935971] [2020-10-16 12:26:03,982 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:03,983 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:03,985 INFO L258 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-10-16 12:26:03,985 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:04,004 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:04,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 12:26:04,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:04,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 12:26:04,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-16 12:26:04,006 INFO L87 Difference]: Start difference. First operand 66 states and 157 transitions. Second operand 6 states. [2020-10-16 12:26:04,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:04,071 INFO L93 Difference]: Finished difference Result 101 states and 235 transitions. [2020-10-16 12:26:04,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:04,072 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-10-16 12:26:04,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:04,073 INFO L225 Difference]: With dead ends: 101 [2020-10-16 12:26:04,073 INFO L226 Difference]: Without dead ends: 96 [2020-10-16 12:26:04,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:26:04,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-16 12:26:04,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2020-10-16 12:26:04,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-16 12:26:04,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 173 transitions. [2020-10-16 12:26:04,084 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 173 transitions. Word has length 9 [2020-10-16 12:26:04,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:04,084 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 173 transitions. [2020-10-16 12:26:04,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 12:26:04,085 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 173 transitions. [2020-10-16 12:26:04,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:26:04,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:04,086 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:04,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:04,300 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:04,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:04,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1002797622, now seen corresponding path program 2 times [2020-10-16 12:26:04,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:04,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773156533] [2020-10-16 12:26:04,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:04,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:04,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773156533] [2020-10-16 12:26:04,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148161846] [2020-10-16 12:26:04,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:04,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:04,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:04,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 12:26:04,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:04,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:04,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:04,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-16 12:26:04,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1799806628] [2020-10-16 12:26:04,505 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:04,506 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:04,507 INFO L258 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-10-16 12:26:04,507 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:04,512 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:04,512 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:04,533 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:04,533 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:04,556 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [1077#(and (<= ~j~0 3) (< ~i~0 377)), 1078#(and (<= (+ ~i~0 ~j~0) 3) (= ~i~0 1))] [2020-10-16 12:26:04,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:04,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:04,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:04,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-16 12:26:04,558 INFO L87 Difference]: Start difference. First operand 71 states and 173 transitions. Second operand 8 states. [2020-10-16 12:26:04,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:04,635 INFO L93 Difference]: Finished difference Result 104 states and 245 transitions. [2020-10-16 12:26:04,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:04,635 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-10-16 12:26:04,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:04,637 INFO L225 Difference]: With dead ends: 104 [2020-10-16 12:26:04,637 INFO L226 Difference]: Without dead ends: 98 [2020-10-16 12:26:04,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:26:04,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-16 12:26:04,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 78. [2020-10-16 12:26:04,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-16 12:26:04,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 191 transitions. [2020-10-16 12:26:04,655 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 191 transitions. Word has length 9 [2020-10-16 12:26:04,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:04,656 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 191 transitions. [2020-10-16 12:26:04,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:04,656 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 191 transitions. [2020-10-16 12:26:04,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:26:04,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:04,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:04,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:04,861 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:04,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:04,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1491235988, now seen corresponding path program 1 times [2020-10-16 12:26:04,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:04,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808236134] [2020-10-16 12:26:04,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:04,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:04,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808236134] [2020-10-16 12:26:04,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:26:04,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 12:26:04,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1102816139] [2020-10-16 12:26:04,982 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:04,985 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:04,987 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 25 transitions. [2020-10-16 12:26:04,987 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:04,996 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:04,996 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:05,033 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:05,033 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:05,042 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:05,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 12:26:05,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:05,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 12:26:05,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:26:05,043 INFO L87 Difference]: Start difference. First operand 78 states and 191 transitions. Second operand 6 states. [2020-10-16 12:26:05,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:05,073 INFO L93 Difference]: Finished difference Result 93 states and 221 transitions. [2020-10-16 12:26:05,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:26:05,074 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-16 12:26:05,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:05,075 INFO L225 Difference]: With dead ends: 93 [2020-10-16 12:26:05,075 INFO L226 Difference]: Without dead ends: 91 [2020-10-16 12:26:05,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:26:05,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-16 12:26:05,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 80. [2020-10-16 12:26:05,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-16 12:26:05,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 195 transitions. [2020-10-16 12:26:05,086 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 195 transitions. Word has length 10 [2020-10-16 12:26:05,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:05,086 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 195 transitions. [2020-10-16 12:26:05,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 12:26:05,086 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 195 transitions. [2020-10-16 12:26:05,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:26:05,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:05,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:05,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 12:26:05,088 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:05,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:05,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1490572898, now seen corresponding path program 2 times [2020-10-16 12:26:05,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:05,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903854632] [2020-10-16 12:26:05,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:05,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:05,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903854632] [2020-10-16 12:26:05,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:26:05,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 12:26:05,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [388230393] [2020-10-16 12:26:05,158 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:05,159 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:05,161 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-10-16 12:26:05,161 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:05,175 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:05,175 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:05,185 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:05,186 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:05,200 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1606#(and (<= ~j~0 3) (< ~i~0 377))] [2020-10-16 12:26:05,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:26:05,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:05,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:26:05,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:26:05,202 INFO L87 Difference]: Start difference. First operand 80 states and 195 transitions. Second operand 7 states. [2020-10-16 12:26:05,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:05,276 INFO L93 Difference]: Finished difference Result 112 states and 262 transitions. [2020-10-16 12:26:05,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:05,278 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-10-16 12:26:05,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:05,279 INFO L225 Difference]: With dead ends: 112 [2020-10-16 12:26:05,279 INFO L226 Difference]: Without dead ends: 107 [2020-10-16 12:26:05,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-16 12:26:05,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-16 12:26:05,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 82. [2020-10-16 12:26:05,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-16 12:26:05,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 194 transitions. [2020-10-16 12:26:05,297 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 194 transitions. Word has length 10 [2020-10-16 12:26:05,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:05,297 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 194 transitions. [2020-10-16 12:26:05,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:26:05,297 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 194 transitions. [2020-10-16 12:26:05,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:26:05,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:05,298 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:05,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 12:26:05,299 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:05,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:05,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1483163371, now seen corresponding path program 3 times [2020-10-16 12:26:05,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:05,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885425565] [2020-10-16 12:26:05,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:05,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:05,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885425565] [2020-10-16 12:26:05,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885489721] [2020-10-16 12:26:05,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:05,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:26:05,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:05,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:26:05,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:05,548 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 12:26:05,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:05,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:05,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 12:26:05,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1146327908] [2020-10-16 12:26:05,576 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:05,577 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:05,579 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-10-16 12:26:05,579 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:05,609 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:05,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:26:05,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:05,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:26:05,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:26:05,611 INFO L87 Difference]: Start difference. First operand 82 states and 194 transitions. Second operand 7 states. [2020-10-16 12:26:05,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:05,718 INFO L93 Difference]: Finished difference Result 122 states and 284 transitions. [2020-10-16 12:26:05,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:26:05,719 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-10-16 12:26:05,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:05,720 INFO L225 Difference]: With dead ends: 122 [2020-10-16 12:26:05,720 INFO L226 Difference]: Without dead ends: 117 [2020-10-16 12:26:05,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:05,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-16 12:26:05,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2020-10-16 12:26:05,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-16 12:26:05,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 215 transitions. [2020-10-16 12:26:05,730 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 215 transitions. Word has length 10 [2020-10-16 12:26:05,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:05,731 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 215 transitions. [2020-10-16 12:26:05,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:26:05,731 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 215 transitions. [2020-10-16 12:26:05,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:26:05,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:05,732 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:05,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:05,947 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:05,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:05,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1021955896, now seen corresponding path program 3 times [2020-10-16 12:26:05,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:05,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290115440] [2020-10-16 12:26:05,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:06,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:06,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290115440] [2020-10-16 12:26:06,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857527790] [2020-10-16 12:26:06,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:06,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:26:06,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:06,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:26:06,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:06,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:06,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:06,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 12:26:06,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [584800303] [2020-10-16 12:26:06,301 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:06,303 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:06,305 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-10-16 12:26:06,306 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:06,309 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:06,310 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:06,347 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:06,351 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:06,402 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:06,402 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:06,430 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [2272#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1)), 2270#(and (<= ~j~0 4) (< ~i~0 377)), 2271#(and (<= ~j~0 (+ (* 2 ~i~0) 1)) (= ~i~0 1))] [2020-10-16 12:26:06,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:06,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:06,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:06,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:26:06,433 INFO L87 Difference]: Start difference. First operand 88 states and 215 transitions. Second operand 10 states. [2020-10-16 12:26:06,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:06,508 INFO L93 Difference]: Finished difference Result 122 states and 292 transitions. [2020-10-16 12:26:06,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:26:06,509 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2020-10-16 12:26:06,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:06,511 INFO L225 Difference]: With dead ends: 122 [2020-10-16 12:26:06,511 INFO L226 Difference]: Without dead ends: 116 [2020-10-16 12:26:06,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:06,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-16 12:26:06,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 94. [2020-10-16 12:26:06,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-16 12:26:06,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 232 transitions. [2020-10-16 12:26:06,529 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 232 transitions. Word has length 10 [2020-10-16 12:26:06,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:06,529 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 232 transitions. [2020-10-16 12:26:06,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:06,529 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 232 transitions. [2020-10-16 12:26:06,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:26:06,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:06,532 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:06,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:06,750 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:06,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:06,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1016324353, now seen corresponding path program 3 times [2020-10-16 12:26:06,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:06,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076297095] [2020-10-16 12:26:06,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:06,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:06,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076297095] [2020-10-16 12:26:06,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568005857] [2020-10-16 12:26:06,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:06,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:26:06,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:06,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:26:06,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:06,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:06,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:06,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 12:26:06,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [302432972] [2020-10-16 12:26:06,965 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:06,967 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:06,969 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-10-16 12:26:06,969 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:06,973 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:06,974 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:06,999 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:06,999 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:07,008 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:07,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:26:07,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:07,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:26:07,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-16 12:26:07,010 INFO L87 Difference]: Start difference. First operand 94 states and 232 transitions. Second operand 7 states. [2020-10-16 12:26:07,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:07,048 INFO L93 Difference]: Finished difference Result 113 states and 270 transitions. [2020-10-16 12:26:07,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 12:26:07,049 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-16 12:26:07,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:07,051 INFO L225 Difference]: With dead ends: 113 [2020-10-16 12:26:07,051 INFO L226 Difference]: Without dead ends: 111 [2020-10-16 12:26:07,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-16 12:26:07,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-16 12:26:07,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 96. [2020-10-16 12:26:07,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-16 12:26:07,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 238 transitions. [2020-10-16 12:26:07,058 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 238 transitions. Word has length 11 [2020-10-16 12:26:07,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:07,058 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 238 transitions. [2020-10-16 12:26:07,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:26:07,059 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 238 transitions. [2020-10-16 12:26:07,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:26:07,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:07,060 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:07,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-16 12:26:07,273 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:07,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:07,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1016325314, now seen corresponding path program 4 times [2020-10-16 12:26:07,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:07,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000991500] [2020-10-16 12:26:07,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:07,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:07,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000991500] [2020-10-16 12:26:07,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489993629] [2020-10-16 12:26:07,344 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:07,391 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:07,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:07,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:26:07,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:07,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:07,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:07,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 12:26:07,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [750004145] [2020-10-16 12:26:07,478 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:07,480 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:07,484 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-10-16 12:26:07,484 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:07,501 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:07,501 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:07,518 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:07,518 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:07,536 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:07,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:26:07,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:07,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:26:07,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-16 12:26:07,538 INFO L87 Difference]: Start difference. First operand 96 states and 238 transitions. Second operand 7 states. [2020-10-16 12:26:07,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:07,598 INFO L93 Difference]: Finished difference Result 118 states and 280 transitions. [2020-10-16 12:26:07,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 12:26:07,599 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-16 12:26:07,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:07,600 INFO L225 Difference]: With dead ends: 118 [2020-10-16 12:26:07,600 INFO L226 Difference]: Without dead ends: 116 [2020-10-16 12:26:07,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:26:07,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-16 12:26:07,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 97. [2020-10-16 12:26:07,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-16 12:26:07,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 239 transitions. [2020-10-16 12:26:07,612 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 239 transitions. Word has length 11 [2020-10-16 12:26:07,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:07,612 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 239 transitions. [2020-10-16 12:26:07,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:26:07,612 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 239 transitions. [2020-10-16 12:26:07,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:26:07,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:07,614 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:07,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:07,827 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:07,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:07,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1016354144, now seen corresponding path program 5 times [2020-10-16 12:26:07,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:07,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959642999] [2020-10-16 12:26:07,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:07,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:07,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959642999] [2020-10-16 12:26:07,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621456234] [2020-10-16 12:26:07,950 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:08,002 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:08,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:08,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:26:08,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:08,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:08,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:08,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 12:26:08,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [806227203] [2020-10-16 12:26:08,078 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:08,079 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:08,081 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 31 transitions. [2020-10-16 12:26:08,081 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:08,083 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:08,083 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:08,110 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:08,110 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:08,134 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:08,134 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:08,144 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:08,145 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:08,153 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3327#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:26:08,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:08,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:08,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:08,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:26:08,154 INFO L87 Difference]: Start difference. First operand 97 states and 239 transitions. Second operand 8 states. [2020-10-16 12:26:08,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:08,211 INFO L93 Difference]: Finished difference Result 118 states and 278 transitions. [2020-10-16 12:26:08,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 12:26:08,211 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-16 12:26:08,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:08,213 INFO L225 Difference]: With dead ends: 118 [2020-10-16 12:26:08,213 INFO L226 Difference]: Without dead ends: 116 [2020-10-16 12:26:08,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:26:08,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-16 12:26:08,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 96. [2020-10-16 12:26:08,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-16 12:26:08,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 236 transitions. [2020-10-16 12:26:08,218 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 236 transitions. Word has length 11 [2020-10-16 12:26:08,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:08,218 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 236 transitions. [2020-10-16 12:26:08,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:08,219 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 236 transitions. [2020-10-16 12:26:08,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:26:08,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:08,220 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:08,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:08,421 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:08,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:08,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1036880143, now seen corresponding path program 6 times [2020-10-16 12:26:08,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:08,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186777926] [2020-10-16 12:26:08,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:08,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:08,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186777926] [2020-10-16 12:26:08,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190561779] [2020-10-16 12:26:08,506 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:08,556 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 12:26:08,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:08,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:26:08,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:08,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:08,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:08,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 12:26:08,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1544514424] [2020-10-16 12:26:08,650 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:08,651 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:08,654 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 27 transitions. [2020-10-16 12:26:08,654 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:08,663 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:08,663 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:08,684 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:08,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:26:08,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:08,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:26:08,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-16 12:26:08,685 INFO L87 Difference]: Start difference. First operand 96 states and 236 transitions. Second operand 7 states. [2020-10-16 12:26:08,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:08,742 INFO L93 Difference]: Finished difference Result 122 states and 288 transitions. [2020-10-16 12:26:08,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 12:26:08,742 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-16 12:26:08,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:08,743 INFO L225 Difference]: With dead ends: 122 [2020-10-16 12:26:08,743 INFO L226 Difference]: Without dead ends: 120 [2020-10-16 12:26:08,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:26:08,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-16 12:26:08,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 98. [2020-10-16 12:26:08,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-16 12:26:08,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 242 transitions. [2020-10-16 12:26:08,749 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 242 transitions. Word has length 11 [2020-10-16 12:26:08,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:08,750 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 242 transitions. [2020-10-16 12:26:08,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:26:08,750 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 242 transitions. [2020-10-16 12:26:08,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:26:08,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:08,751 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:08,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-16 12:26:08,952 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:08,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:08,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1036881104, now seen corresponding path program 7 times [2020-10-16 12:26:08,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:08,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950975142] [2020-10-16 12:26:08,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:09,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:09,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950975142] [2020-10-16 12:26:09,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703460418] [2020-10-16 12:26:09,017 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:09,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:26:09,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:09,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:09,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:09,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 12:26:09,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1071714375] [2020-10-16 12:26:09,152 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:09,154 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:09,157 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 29 transitions. [2020-10-16 12:26:09,157 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:09,160 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:09,161 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:09,191 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:09,192 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:09,225 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:09,225 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:09,240 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [4042#(and (< ~i~0 377) (<= ~j~0 5)), 4043#(and (<= (+ ~i~0 ~j~0) 5) (< ~i~0 377))] [2020-10-16 12:26:09,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:09,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:09,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:09,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:26:09,241 INFO L87 Difference]: Start difference. First operand 98 states and 242 transitions. Second operand 9 states. [2020-10-16 12:26:09,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:09,386 INFO L93 Difference]: Finished difference Result 138 states and 324 transitions. [2020-10-16 12:26:09,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:26:09,386 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2020-10-16 12:26:09,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:09,387 INFO L225 Difference]: With dead ends: 138 [2020-10-16 12:26:09,388 INFO L226 Difference]: Without dead ends: 133 [2020-10-16 12:26:09,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:09,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-16 12:26:09,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 98. [2020-10-16 12:26:09,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-16 12:26:09,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 235 transitions. [2020-10-16 12:26:09,397 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 235 transitions. Word has length 11 [2020-10-16 12:26:09,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:09,399 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 235 transitions. [2020-10-16 12:26:09,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:09,399 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 235 transitions. [2020-10-16 12:26:09,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:26:09,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:09,400 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:09,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:09,611 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:09,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:09,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1038466754, now seen corresponding path program 8 times [2020-10-16 12:26:09,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:09,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895836012] [2020-10-16 12:26:09,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:09,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:09,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895836012] [2020-10-16 12:26:09,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84843658] [2020-10-16 12:26:09,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:09,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:09,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:09,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:26:09,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:09,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:09,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:09,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 12:26:09,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [631201014] [2020-10-16 12:26:09,786 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:09,787 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:09,788 INFO L258 McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions. [2020-10-16 12:26:09,789 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:09,800 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:09,800 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:09,827 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4427#(and (< ~i~0 377) (<= ~j~0 5))] [2020-10-16 12:26:09,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:09,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:09,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:09,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:26:09,828 INFO L87 Difference]: Start difference. First operand 98 states and 235 transitions. Second operand 8 states. [2020-10-16 12:26:09,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:09,971 INFO L93 Difference]: Finished difference Result 134 states and 315 transitions. [2020-10-16 12:26:09,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:26:09,972 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-16 12:26:09,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:09,973 INFO L225 Difference]: With dead ends: 134 [2020-10-16 12:26:09,973 INFO L226 Difference]: Without dead ends: 129 [2020-10-16 12:26:09,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:09,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-16 12:26:09,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 98. [2020-10-16 12:26:09,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-16 12:26:09,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 231 transitions. [2020-10-16 12:26:09,981 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 231 transitions. Word has length 11 [2020-10-16 12:26:09,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:09,982 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 231 transitions. [2020-10-16 12:26:09,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:09,982 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 231 transitions. [2020-10-16 12:26:09,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:26:09,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:09,983 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:10,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-16 12:26:10,195 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:10,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:10,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1266597800, now seen corresponding path program 4 times [2020-10-16 12:26:10,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:10,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178258906] [2020-10-16 12:26:10,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:10,267 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:10,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178258906] [2020-10-16 12:26:10,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968923425] [2020-10-16 12:26:10,268 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:10,307 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:10,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:10,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:10,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:10,384 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 12:26:10,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:10,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:10,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2020-10-16 12:26:10,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [442404643] [2020-10-16 12:26:10,416 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:10,418 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:10,420 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 31 transitions. [2020-10-16 12:26:10,420 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:10,450 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:10,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:10,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:10,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:10,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:26:10,451 INFO L87 Difference]: Start difference. First operand 98 states and 231 transitions. Second operand 8 states. [2020-10-16 12:26:10,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:10,565 INFO L93 Difference]: Finished difference Result 143 states and 333 transitions. [2020-10-16 12:26:10,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:26:10,566 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-16 12:26:10,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:10,567 INFO L225 Difference]: With dead ends: 143 [2020-10-16 12:26:10,568 INFO L226 Difference]: Without dead ends: 138 [2020-10-16 12:26:10,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:26:10,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-16 12:26:10,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 105. [2020-10-16 12:26:10,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-16 12:26:10,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 257 transitions. [2020-10-16 12:26:10,573 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 257 transitions. Word has length 11 [2020-10-16 12:26:10,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:10,574 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 257 transitions. [2020-10-16 12:26:10,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:10,574 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 257 transitions. [2020-10-16 12:26:10,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:26:10,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:10,575 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:10,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-16 12:26:10,788 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:10,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:10,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1615862390, now seen corresponding path program 4 times [2020-10-16 12:26:10,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:10,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674542244] [2020-10-16 12:26:10,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:10,896 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:10,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674542244] [2020-10-16 12:26:10,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852312942] [2020-10-16 12:26:10,897 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:10,956 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:10,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:10,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:10,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:11,067 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:11,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:11,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:11,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [434307259] [2020-10-16 12:26:11,069 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:11,070 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:11,071 INFO L258 McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions. [2020-10-16 12:26:11,071 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:11,074 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:11,074 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:11,096 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:11,097 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:11,123 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:11,123 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:11,166 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:11,167 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:11,193 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [5218#(and (< ~i~0 377) (<= ~j~0 5)), 5219#(and (<= ~j~0 (+ (* 3 ~i~0) 1)) (= ~i~0 1)), 5220#(and (<= ~j~0 (+ (* 2 ~i~0) 1)) (= ~i~0 1)), 5221#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:26:11,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:26:11,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:11,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:26:11,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:11,195 INFO L87 Difference]: Start difference. First operand 105 states and 257 transitions. Second operand 12 states. [2020-10-16 12:26:11,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:11,285 INFO L93 Difference]: Finished difference Result 153 states and 366 transitions. [2020-10-16 12:26:11,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:26:11,285 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 11 [2020-10-16 12:26:11,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:11,287 INFO L225 Difference]: With dead ends: 153 [2020-10-16 12:26:11,287 INFO L226 Difference]: Without dead ends: 147 [2020-10-16 12:26:11,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:11,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-16 12:26:11,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 112. [2020-10-16 12:26:11,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-16 12:26:11,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 277 transitions. [2020-10-16 12:26:11,292 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 277 transitions. Word has length 11 [2020-10-16 12:26:11,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:11,292 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 277 transitions. [2020-10-16 12:26:11,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:26:11,293 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 277 transitions. [2020-10-16 12:26:11,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:11,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:11,293 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:11,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-16 12:26:11,494 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:11,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:11,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1441283596, now seen corresponding path program 9 times [2020-10-16 12:26:11,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:11,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131254273] [2020-10-16 12:26:11,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:11,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:11,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131254273] [2020-10-16 12:26:11,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334484600] [2020-10-16 12:26:11,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:11,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:26:11,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:11,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:11,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:11,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:11,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:11,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:11,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [314091840] [2020-10-16 12:26:11,722 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:11,723 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:11,725 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 31 transitions. [2020-10-16 12:26:11,725 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:11,730 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:11,731 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:11,756 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:11,756 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:11,762 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:11,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:11,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:11,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:11,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:26:11,763 INFO L87 Difference]: Start difference. First operand 112 states and 277 transitions. Second operand 8 states. [2020-10-16 12:26:11,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:11,806 INFO L93 Difference]: Finished difference Result 137 states and 327 transitions. [2020-10-16 12:26:11,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 12:26:11,808 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-16 12:26:11,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:11,810 INFO L225 Difference]: With dead ends: 137 [2020-10-16 12:26:11,810 INFO L226 Difference]: Without dead ends: 135 [2020-10-16 12:26:11,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:26:11,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-16 12:26:11,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 116. [2020-10-16 12:26:11,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-16 12:26:11,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 289 transitions. [2020-10-16 12:26:11,815 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 289 transitions. Word has length 12 [2020-10-16 12:26:11,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:11,815 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 289 transitions. [2020-10-16 12:26:11,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:11,815 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 289 transitions. [2020-10-16 12:26:11,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:11,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:11,816 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:12,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-16 12:26:12,024 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:12,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:12,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1441284557, now seen corresponding path program 10 times [2020-10-16 12:26:12,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:12,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995951328] [2020-10-16 12:26:12,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:12,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:12,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995951328] [2020-10-16 12:26:12,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705556500] [2020-10-16 12:26:12,094 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:12,154 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:12,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:12,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:12,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:12,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:12,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:12,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:12,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2098551801] [2020-10-16 12:26:12,269 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:12,270 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:12,272 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 29 transitions. [2020-10-16 12:26:12,272 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:12,289 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:12,289 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:12,295 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:12,296 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:12,302 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:12,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:12,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:12,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:12,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:26:12,304 INFO L87 Difference]: Start difference. First operand 116 states and 289 transitions. Second operand 8 states. [2020-10-16 12:26:12,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:12,367 INFO L93 Difference]: Finished difference Result 142 states and 337 transitions. [2020-10-16 12:26:12,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 12:26:12,367 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-16 12:26:12,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:12,368 INFO L225 Difference]: With dead ends: 142 [2020-10-16 12:26:12,369 INFO L226 Difference]: Without dead ends: 140 [2020-10-16 12:26:12,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:26:12,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-16 12:26:12,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 114. [2020-10-16 12:26:12,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-16 12:26:12,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 283 transitions. [2020-10-16 12:26:12,373 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 283 transitions. Word has length 12 [2020-10-16 12:26:12,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:12,374 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 283 transitions. [2020-10-16 12:26:12,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:12,374 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 283 transitions. [2020-10-16 12:26:12,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:12,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:12,375 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:12,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:12,576 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:12,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:12,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1441313387, now seen corresponding path program 11 times [2020-10-16 12:26:12,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:12,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156616545] [2020-10-16 12:26:12,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:12,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:12,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156616545] [2020-10-16 12:26:12,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729643966] [2020-10-16 12:26:12,649 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:12,712 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:12,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:12,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:12,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:12,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:12,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:12,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:12,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [674676504] [2020-10-16 12:26:12,791 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:12,792 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:12,794 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 27 transitions. [2020-10-16 12:26:12,794 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:12,800 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:12,801 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:12,816 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:12,817 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:12,823 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:12,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:12,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:12,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:12,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:26:12,824 INFO L87 Difference]: Start difference. First operand 114 states and 283 transitions. Second operand 8 states. [2020-10-16 12:26:12,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:12,891 INFO L93 Difference]: Finished difference Result 144 states and 341 transitions. [2020-10-16 12:26:12,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 12:26:12,891 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-16 12:26:12,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:12,893 INFO L225 Difference]: With dead ends: 144 [2020-10-16 12:26:12,893 INFO L226 Difference]: Without dead ends: 142 [2020-10-16 12:26:12,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:12,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-16 12:26:12,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 115. [2020-10-16 12:26:12,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-16 12:26:12,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 286 transitions. [2020-10-16 12:26:12,898 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 286 transitions. Word has length 12 [2020-10-16 12:26:12,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:12,898 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 286 transitions. [2020-10-16 12:26:12,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:12,899 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 286 transitions. [2020-10-16 12:26:12,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:12,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:12,899 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:13,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:13,111 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:13,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:13,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1441314348, now seen corresponding path program 12 times [2020-10-16 12:26:13,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:13,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727925824] [2020-10-16 12:26:13,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:13,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:13,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727925824] [2020-10-16 12:26:13,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551831250] [2020-10-16 12:26:13,198 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:13,246 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 12:26:13,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:13,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:13,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:13,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:13,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:13,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:13,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [819519078] [2020-10-16 12:26:13,333 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:13,334 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:13,336 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 27 transitions. [2020-10-16 12:26:13,336 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:13,341 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:13,341 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:13,354 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:13,354 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:13,360 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:13,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:13,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:13,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:13,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:26:13,362 INFO L87 Difference]: Start difference. First operand 115 states and 286 transitions. Second operand 8 states. [2020-10-16 12:26:13,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:13,425 INFO L93 Difference]: Finished difference Result 145 states and 343 transitions. [2020-10-16 12:26:13,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 12:26:13,425 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-16 12:26:13,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:13,426 INFO L225 Difference]: With dead ends: 145 [2020-10-16 12:26:13,426 INFO L226 Difference]: Without dead ends: 143 [2020-10-16 12:26:13,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:13,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-16 12:26:13,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 115. [2020-10-16 12:26:13,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-16 12:26:13,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 284 transitions. [2020-10-16 12:26:13,431 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 284 transitions. Word has length 12 [2020-10-16 12:26:13,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:13,431 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 284 transitions. [2020-10-16 12:26:13,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:13,432 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 284 transitions. [2020-10-16 12:26:13,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:13,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:13,433 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:13,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:13,633 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:13,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:13,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1442207117, now seen corresponding path program 13 times [2020-10-16 12:26:13,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:13,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625534735] [2020-10-16 12:26:13,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:13,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:13,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625534735] [2020-10-16 12:26:13,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418564165] [2020-10-16 12:26:13,707 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:13,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:13,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:13,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:13,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:13,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:13,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [925335113] [2020-10-16 12:26:13,831 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:13,832 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:13,834 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 32 transitions. [2020-10-16 12:26:13,835 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:13,842 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:13,842 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:13,869 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:13,870 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:13,886 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:13,886 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:13,897 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:13,897 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:13,903 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [7329#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:26:13,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:13,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:13,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:13,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:26:13,904 INFO L87 Difference]: Start difference. First operand 115 states and 284 transitions. Second operand 9 states. [2020-10-16 12:26:13,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:13,973 INFO L93 Difference]: Finished difference Result 143 states and 338 transitions. [2020-10-16 12:26:13,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:13,974 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-16 12:26:13,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:13,975 INFO L225 Difference]: With dead ends: 143 [2020-10-16 12:26:13,975 INFO L226 Difference]: Without dead ends: 141 [2020-10-16 12:26:13,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:13,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-16 12:26:13,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 117. [2020-10-16 12:26:13,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-16 12:26:13,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 289 transitions. [2020-10-16 12:26:13,979 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 289 transitions. Word has length 12 [2020-10-16 12:26:13,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:13,980 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 289 transitions. [2020-10-16 12:26:13,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:13,980 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 289 transitions. [2020-10-16 12:26:13,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:13,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:13,981 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:14,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-16 12:26:14,182 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:14,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:14,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1442208078, now seen corresponding path program 14 times [2020-10-16 12:26:14,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:14,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95591146] [2020-10-16 12:26:14,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:14,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:14,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95591146] [2020-10-16 12:26:14,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692401961] [2020-10-16 12:26:14,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:14,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:14,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:14,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:14,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:14,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:14,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:14,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:14,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1140278363] [2020-10-16 12:26:14,407 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:14,408 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:14,410 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 32 transitions. [2020-10-16 12:26:14,410 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:14,411 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:14,411 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:14,442 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:14,442 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:14,460 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:14,460 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:14,470 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:14,471 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:14,478 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [7757#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:26:14,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:14,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:14,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:14,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:26:14,479 INFO L87 Difference]: Start difference. First operand 117 states and 289 transitions. Second operand 9 states. [2020-10-16 12:26:14,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:14,570 INFO L93 Difference]: Finished difference Result 146 states and 344 transitions. [2020-10-16 12:26:14,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:14,570 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-16 12:26:14,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:14,571 INFO L225 Difference]: With dead ends: 146 [2020-10-16 12:26:14,571 INFO L226 Difference]: Without dead ends: 144 [2020-10-16 12:26:14,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:14,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-16 12:26:14,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 115. [2020-10-16 12:26:14,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-16 12:26:14,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 283 transitions. [2020-10-16 12:26:14,581 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 283 transitions. Word has length 12 [2020-10-16 12:26:14,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:14,582 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 283 transitions. [2020-10-16 12:26:14,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:14,582 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 283 transitions. [2020-10-16 12:26:14,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:14,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:14,583 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:14,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-16 12:26:14,791 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:14,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:14,792 INFO L82 PathProgramCache]: Analyzing trace with hash 2078513086, now seen corresponding path program 15 times [2020-10-16 12:26:14,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:14,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628742901] [2020-10-16 12:26:14,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:14,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:14,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628742901] [2020-10-16 12:26:14,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005781085] [2020-10-16 12:26:14,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:14,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:26:14,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:14,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:14,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:15,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:15,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:15,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:15,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [794415876] [2020-10-16 12:26:15,043 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:15,044 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:15,045 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 30 transitions. [2020-10-16 12:26:15,046 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:15,054 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:15,054 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:15,067 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:15,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:15,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:15,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:15,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:26:15,068 INFO L87 Difference]: Start difference. First operand 115 states and 283 transitions. Second operand 8 states. [2020-10-16 12:26:15,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:15,112 INFO L93 Difference]: Finished difference Result 151 states and 355 transitions. [2020-10-16 12:26:15,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:15,113 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-16 12:26:15,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:15,114 INFO L225 Difference]: With dead ends: 151 [2020-10-16 12:26:15,114 INFO L226 Difference]: Without dead ends: 149 [2020-10-16 12:26:15,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:26:15,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-16 12:26:15,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2020-10-16 12:26:15,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-16 12:26:15,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 295 transitions. [2020-10-16 12:26:15,119 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 295 transitions. Word has length 12 [2020-10-16 12:26:15,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:15,119 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 295 transitions. [2020-10-16 12:26:15,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:15,119 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 295 transitions. [2020-10-16 12:26:15,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:15,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:15,120 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:15,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-16 12:26:15,332 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:15,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:15,332 INFO L82 PathProgramCache]: Analyzing trace with hash 2078514047, now seen corresponding path program 16 times [2020-10-16 12:26:15,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:15,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693206061] [2020-10-16 12:26:15,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:15,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:15,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:15,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693206061] [2020-10-16 12:26:15,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706450667] [2020-10-16 12:26:15,416 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:15,469 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:15,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:15,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:15,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:15,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:15,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:15,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:15,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1296245291] [2020-10-16 12:26:15,562 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:15,563 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:15,565 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-16 12:26:15,565 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:15,569 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:15,569 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:15,592 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:15,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:15,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:15,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:15,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:26:15,593 INFO L87 Difference]: Start difference. First operand 119 states and 295 transitions. Second operand 8 states. [2020-10-16 12:26:15,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:15,658 INFO L93 Difference]: Finished difference Result 152 states and 357 transitions. [2020-10-16 12:26:15,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:15,658 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-16 12:26:15,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:15,659 INFO L225 Difference]: With dead ends: 152 [2020-10-16 12:26:15,660 INFO L226 Difference]: Without dead ends: 150 [2020-10-16 12:26:15,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:15,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-16 12:26:15,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 117. [2020-10-16 12:26:15,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-16 12:26:15,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 289 transitions. [2020-10-16 12:26:15,666 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 289 transitions. Word has length 12 [2020-10-16 12:26:15,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:15,666 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 289 transitions. [2020-10-16 12:26:15,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:15,666 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 289 transitions. [2020-10-16 12:26:15,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:15,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:15,667 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:15,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-16 12:26:15,878 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:15,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:15,879 INFO L82 PathProgramCache]: Analyzing trace with hash 2078542877, now seen corresponding path program 17 times [2020-10-16 12:26:15,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:15,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470808645] [2020-10-16 12:26:15,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:15,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:15,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470808645] [2020-10-16 12:26:15,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706791192] [2020-10-16 12:26:15,962 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:16,007 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:16,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:16,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:16,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:16,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:16,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:16,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:16,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [526718651] [2020-10-16 12:26:16,097 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:16,114 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:16,115 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-16 12:26:16,116 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:16,119 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:16,119 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:16,132 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:16,132 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:16,150 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [9057#(and (<= (+ ~i~0 (* 2 ~j~0)) 8) (< ~i~0 377))] [2020-10-16 12:26:16,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:16,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:16,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:16,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:26:16,151 INFO L87 Difference]: Start difference. First operand 117 states and 289 transitions. Second operand 9 states. [2020-10-16 12:26:16,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:16,273 INFO L93 Difference]: Finished difference Result 161 states and 377 transitions. [2020-10-16 12:26:16,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:26:16,273 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-16 12:26:16,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:16,275 INFO L225 Difference]: With dead ends: 161 [2020-10-16 12:26:16,275 INFO L226 Difference]: Without dead ends: 159 [2020-10-16 12:26:16,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:16,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-16 12:26:16,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 120. [2020-10-16 12:26:16,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-16 12:26:16,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 300 transitions. [2020-10-16 12:26:16,281 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 300 transitions. Word has length 12 [2020-10-16 12:26:16,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:16,281 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 300 transitions. [2020-10-16 12:26:16,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:16,281 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 300 transitions. [2020-10-16 12:26:16,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:16,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:16,282 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:16,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-16 12:26:16,493 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:16,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:16,493 INFO L82 PathProgramCache]: Analyzing trace with hash 2078543838, now seen corresponding path program 18 times [2020-10-16 12:26:16,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:16,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642707214] [2020-10-16 12:26:16,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:16,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:16,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:16,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642707214] [2020-10-16 12:26:16,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136795498] [2020-10-16 12:26:16,563 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:16,613 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 12:26:16,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:16,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:16,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:16,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:16,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:16,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:16,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [842479425] [2020-10-16 12:26:16,708 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:16,709 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:16,711 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 32 transitions. [2020-10-16 12:26:16,711 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:16,713 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:16,713 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:16,736 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:16,736 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:16,779 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:16,779 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:16,788 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:16,789 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:16,812 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [9513#(and (<= ~j~0 7) (< ~i~0 377)), 9514#(and (< ~i~0 377) (<= (+ ~i~0 ~j~0) 7)), 9515#(and (< ~i~0 377) (<= (+ (* 2 ~i~0) ~j~0) 7))] [2020-10-16 12:26:16,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:26:16,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:16,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:26:16,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:16,814 INFO L87 Difference]: Start difference. First operand 120 states and 300 transitions. Second operand 11 states. [2020-10-16 12:26:17,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:17,007 INFO L93 Difference]: Finished difference Result 172 states and 403 transitions. [2020-10-16 12:26:17,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:26:17,008 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2020-10-16 12:26:17,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:17,009 INFO L225 Difference]: With dead ends: 172 [2020-10-16 12:26:17,009 INFO L226 Difference]: Without dead ends: 167 [2020-10-16 12:26:17,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:26:17,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-16 12:26:17,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 116. [2020-10-16 12:26:17,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-16 12:26:17,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 288 transitions. [2020-10-16 12:26:17,014 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 288 transitions. Word has length 12 [2020-10-16 12:26:17,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:17,014 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 288 transitions. [2020-10-16 12:26:17,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:26:17,015 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 288 transitions. [2020-10-16 12:26:17,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:17,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:17,016 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:17,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:17,226 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:17,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:17,226 INFO L82 PathProgramCache]: Analyzing trace with hash 2099731966, now seen corresponding path program 19 times [2020-10-16 12:26:17,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:17,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866626025] [2020-10-16 12:26:17,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:17,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:17,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866626025] [2020-10-16 12:26:17,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008810028] [2020-10-16 12:26:17,301 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:17,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:17,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:17,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:17,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:17,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:17,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2056404585] [2020-10-16 12:26:17,452 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:17,453 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:17,455 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 40 transitions. [2020-10-16 12:26:17,455 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:17,461 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:17,461 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:17,488 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:17,488 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:17,515 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [9978#(and (< ~i~0 377) (<= ~j~0 5))] [2020-10-16 12:26:17,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:17,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:17,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:17,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:26:17,516 INFO L87 Difference]: Start difference. First operand 116 states and 288 transitions. Second operand 9 states. [2020-10-16 12:26:17,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:17,630 INFO L93 Difference]: Finished difference Result 167 states and 394 transitions. [2020-10-16 12:26:17,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:26:17,631 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-16 12:26:17,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:17,632 INFO L225 Difference]: With dead ends: 167 [2020-10-16 12:26:17,632 INFO L226 Difference]: Without dead ends: 162 [2020-10-16 12:26:17,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:17,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-16 12:26:17,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 118. [2020-10-16 12:26:17,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-16 12:26:17,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 287 transitions. [2020-10-16 12:26:17,637 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 287 transitions. Word has length 12 [2020-10-16 12:26:17,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:17,637 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 287 transitions. [2020-10-16 12:26:17,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:17,637 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 287 transitions. [2020-10-16 12:26:17,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:17,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:17,638 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:17,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-16 12:26:17,839 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:17,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:17,839 INFO L82 PathProgramCache]: Analyzing trace with hash 2100655487, now seen corresponding path program 20 times [2020-10-16 12:26:17,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:17,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280515807] [2020-10-16 12:26:17,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:17,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:17,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280515807] [2020-10-16 12:26:17,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632456919] [2020-10-16 12:26:17,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:17,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:17,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:17,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:17,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:18,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:18,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:18,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:18,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [710840913] [2020-10-16 12:26:18,103 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:18,104 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:18,105 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-10-16 12:26:18,106 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:18,122 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:18,122 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:18,142 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [10436#(and (< ~i~0 377) (<= ~j~0 8))] [2020-10-16 12:26:18,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:18,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:18,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:18,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:26:18,143 INFO L87 Difference]: Start difference. First operand 118 states and 287 transitions. Second operand 9 states. [2020-10-16 12:26:18,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:18,387 INFO L93 Difference]: Finished difference Result 166 states and 393 transitions. [2020-10-16 12:26:18,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:26:18,388 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-16 12:26:18,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:18,390 INFO L225 Difference]: With dead ends: 166 [2020-10-16 12:26:18,390 INFO L226 Difference]: Without dead ends: 161 [2020-10-16 12:26:18,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:26:18,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-16 12:26:18,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 117. [2020-10-16 12:26:18,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-16 12:26:18,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 282 transitions. [2020-10-16 12:26:18,399 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 282 transitions. Word has length 12 [2020-10-16 12:26:18,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:18,400 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 282 transitions. [2020-10-16 12:26:18,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:18,400 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 282 transitions. [2020-10-16 12:26:18,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:18,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:18,402 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:18,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-16 12:26:18,617 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:18,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:18,618 INFO L82 PathProgramCache]: Analyzing trace with hash 2127698027, now seen corresponding path program 21 times [2020-10-16 12:26:18,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:18,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134597292] [2020-10-16 12:26:18,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:18,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:18,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134597292] [2020-10-16 12:26:18,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437216879] [2020-10-16 12:26:18,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:18,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:26:18,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:18,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:18,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:18,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:18,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:18,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:18,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [822330615] [2020-10-16 12:26:18,818 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:18,819 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:18,820 INFO L258 McrAutomatonBuilder]: Finished intersection with 17 states and 20 transitions. [2020-10-16 12:26:18,820 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:18,829 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:18,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:18,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:18,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:18,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:26:18,830 INFO L87 Difference]: Start difference. First operand 117 states and 282 transitions. Second operand 8 states. [2020-10-16 12:26:18,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:18,978 INFO L93 Difference]: Finished difference Result 162 states and 371 transitions. [2020-10-16 12:26:18,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:26:18,979 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-16 12:26:18,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:18,980 INFO L225 Difference]: With dead ends: 162 [2020-10-16 12:26:18,980 INFO L226 Difference]: Without dead ends: 160 [2020-10-16 12:26:18,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:18,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-16 12:26:18,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 117. [2020-10-16 12:26:18,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-16 12:26:18,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 285 transitions. [2020-10-16 12:26:18,986 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 285 transitions. Word has length 12 [2020-10-16 12:26:18,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:18,986 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 285 transitions. [2020-10-16 12:26:18,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:18,986 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 285 transitions. [2020-10-16 12:26:18,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:18,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:18,987 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:19,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:19,200 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:19,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:19,200 INFO L82 PathProgramCache]: Analyzing trace with hash 2127698988, now seen corresponding path program 22 times [2020-10-16 12:26:19,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:19,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661060535] [2020-10-16 12:26:19,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:19,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:19,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:19,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661060535] [2020-10-16 12:26:19,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486964989] [2020-10-16 12:26:19,261 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:19,307 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:19,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:19,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:19,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:19,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:19,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:19,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:19,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1058250169] [2020-10-16 12:26:19,395 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:19,396 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:19,398 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-16 12:26:19,398 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:19,404 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:19,404 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:19,431 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:19,431 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:19,468 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [11349#(and (< ~i~0 377) (<= ~j~0 8)), 11350#(and (<= (+ ~i~0 ~j~0) 8) (< ~i~0 377))] [2020-10-16 12:26:19,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:19,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:19,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:19,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:19,470 INFO L87 Difference]: Start difference. First operand 117 states and 285 transitions. Second operand 10 states. [2020-10-16 12:26:19,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:19,717 INFO L93 Difference]: Finished difference Result 173 states and 407 transitions. [2020-10-16 12:26:19,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:26:19,717 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-10-16 12:26:19,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:19,719 INFO L225 Difference]: With dead ends: 173 [2020-10-16 12:26:19,719 INFO L226 Difference]: Without dead ends: 168 [2020-10-16 12:26:19,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:26:19,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-16 12:26:19,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 115. [2020-10-16 12:26:19,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-16 12:26:19,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 277 transitions. [2020-10-16 12:26:19,727 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 277 transitions. Word has length 12 [2020-10-16 12:26:19,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:19,727 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 277 transitions. [2020-10-16 12:26:19,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:19,728 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 277 transitions. [2020-10-16 12:26:19,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:19,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:19,729 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:19,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:19,940 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:19,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:19,941 INFO L82 PathProgramCache]: Analyzing trace with hash 2128361117, now seen corresponding path program 23 times [2020-10-16 12:26:19,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:19,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566036236] [2020-10-16 12:26:19,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:20,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:20,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566036236] [2020-10-16 12:26:20,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193637223] [2020-10-16 12:26:20,021 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:20,076 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:26:20,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:20,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:20,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:20,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:20,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:20,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:20,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [726239313] [2020-10-16 12:26:20,195 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:20,196 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:20,197 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 22 transitions. [2020-10-16 12:26:20,198 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:20,210 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:20,210 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:20,231 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [11814#(and (<= ~j~0 7) (< ~i~0 377))] [2020-10-16 12:26:20,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:20,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:20,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:20,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:26:20,233 INFO L87 Difference]: Start difference. First operand 115 states and 277 transitions. Second operand 9 states. [2020-10-16 12:26:20,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:20,422 INFO L93 Difference]: Finished difference Result 161 states and 376 transitions. [2020-10-16 12:26:20,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:26:20,423 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-16 12:26:20,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:20,425 INFO L225 Difference]: With dead ends: 161 [2020-10-16 12:26:20,425 INFO L226 Difference]: Without dead ends: 156 [2020-10-16 12:26:20,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=286, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:26:20,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-16 12:26:20,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 114. [2020-10-16 12:26:20,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-16 12:26:20,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 268 transitions. [2020-10-16 12:26:20,429 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 268 transitions. Word has length 12 [2020-10-16 12:26:20,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:20,429 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 268 transitions. [2020-10-16 12:26:20,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:20,430 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 268 transitions. [2020-10-16 12:26:20,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:20,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:20,430 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:20,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-10-16 12:26:20,639 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:20,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:20,639 INFO L82 PathProgramCache]: Analyzing trace with hash 609848181, now seen corresponding path program 5 times [2020-10-16 12:26:20,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:20,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108571357] [2020-10-16 12:26:20,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:20,713 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:20,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108571357] [2020-10-16 12:26:20,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817914362] [2020-10-16 12:26:20,714 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:20,755 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:26:20,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:20,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:20,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:20,861 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 12:26:20,884 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:20,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:20,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:26:20,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [407971254] [2020-10-16 12:26:20,885 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:20,886 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:20,888 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-10-16 12:26:20,888 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:20,915 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:20,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:20,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:20,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:20,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:20,917 INFO L87 Difference]: Start difference. First operand 114 states and 268 transitions. Second operand 9 states. [2020-10-16 12:26:21,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:21,043 INFO L93 Difference]: Finished difference Result 164 states and 382 transitions. [2020-10-16 12:26:21,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:21,047 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-16 12:26:21,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:21,048 INFO L225 Difference]: With dead ends: 164 [2020-10-16 12:26:21,048 INFO L226 Difference]: Without dead ends: 159 [2020-10-16 12:26:21,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:26:21,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-16 12:26:21,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122. [2020-10-16 12:26:21,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-16 12:26:21,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 299 transitions. [2020-10-16 12:26:21,055 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 299 transitions. Word has length 12 [2020-10-16 12:26:21,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:21,055 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 299 transitions. [2020-10-16 12:26:21,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:21,056 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 299 transitions. [2020-10-16 12:26:21,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:21,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:21,056 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:21,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:21,257 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:21,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:21,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1447872776, now seen corresponding path program 5 times [2020-10-16 12:26:21,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:21,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801022298] [2020-10-16 12:26:21,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:21,367 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:21,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801022298] [2020-10-16 12:26:21,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617312026] [2020-10-16 12:26:21,368 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:21,414 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:26:21,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:21,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:21,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:21,530 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:21,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:21,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:21,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [318324352] [2020-10-16 12:26:21,531 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:21,532 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:21,533 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-16 12:26:21,534 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:21,534 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:21,535 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:21,557 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:21,557 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:21,595 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:21,595 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:21,624 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:21,624 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:21,667 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:21,667 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:21,695 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [12736#(and (= ~i~0 1) (<= ~j~0 (+ (* 4 ~i~0) 1))), 12737#(and (<= ~j~0 (+ (* 3 ~i~0) 1)) (= ~i~0 1)), 12738#(and (<= ~j~0 (+ (* 2 ~i~0) 1)) (= ~i~0 1)), 12739#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1)), 12735#(and (<= ~j~0 6) (< ~i~0 377))] [2020-10-16 12:26:21,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 12:26:21,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:21,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 12:26:21,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:26:21,697 INFO L87 Difference]: Start difference. First operand 122 states and 299 transitions. Second operand 14 states. [2020-10-16 12:26:21,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:21,788 INFO L93 Difference]: Finished difference Result 184 states and 440 transitions. [2020-10-16 12:26:21,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:21,789 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 12 [2020-10-16 12:26:21,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:21,790 INFO L225 Difference]: With dead ends: 184 [2020-10-16 12:26:21,790 INFO L226 Difference]: Without dead ends: 178 [2020-10-16 12:26:21,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:26:21,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-16 12:26:21,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 131. [2020-10-16 12:26:21,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-16 12:26:21,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 327 transitions. [2020-10-16 12:26:21,795 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 327 transitions. Word has length 12 [2020-10-16 12:26:21,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:21,795 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 327 transitions. [2020-10-16 12:26:21,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 12:26:21,796 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 327 transitions. [2020-10-16 12:26:21,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:21,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:21,796 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:22,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-10-16 12:26:22,007 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:22,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:22,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1730118241, now seen corresponding path program 24 times [2020-10-16 12:26:22,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:22,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292341795] [2020-10-16 12:26:22,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:22,101 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:22,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292341795] [2020-10-16 12:26:22,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506861710] [2020-10-16 12:26:22,102 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:22,177 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:26:22,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:22,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:22,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:22,317 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:22,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:22,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:22,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1300495977] [2020-10-16 12:26:22,319 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:22,320 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:22,327 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-10-16 12:26:22,327 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:22,333 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:22,333 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:22,353 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:22,353 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:22,364 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:22,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:22,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:22,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:22,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:22,366 INFO L87 Difference]: Start difference. First operand 131 states and 327 transitions. Second operand 9 states. [2020-10-16 12:26:22,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:22,411 INFO L93 Difference]: Finished difference Result 162 states and 389 transitions. [2020-10-16 12:26:22,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:22,412 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:22,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:22,413 INFO L225 Difference]: With dead ends: 162 [2020-10-16 12:26:22,414 INFO L226 Difference]: Without dead ends: 160 [2020-10-16 12:26:22,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:22,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-16 12:26:22,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 137. [2020-10-16 12:26:22,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-16 12:26:22,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 345 transitions. [2020-10-16 12:26:22,420 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 345 transitions. Word has length 13 [2020-10-16 12:26:22,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:22,420 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 345 transitions. [2020-10-16 12:26:22,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:22,421 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 345 transitions. [2020-10-16 12:26:22,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:22,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:22,421 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:22,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:22,633 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:22,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:22,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1730119202, now seen corresponding path program 25 times [2020-10-16 12:26:22,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:22,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952709264] [2020-10-16 12:26:22,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:22,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:22,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:22,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952709264] [2020-10-16 12:26:22,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092464745] [2020-10-16 12:26:22,721 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:22,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:22,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:22,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:22,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:22,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:22,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:22,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1852037512] [2020-10-16 12:26:22,906 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:22,907 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:22,909 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 32 transitions. [2020-10-16 12:26:22,909 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:22,928 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:22,928 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:22,934 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:22,935 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:22,940 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:22,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:22,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:22,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:22,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:22,941 INFO L87 Difference]: Start difference. First operand 137 states and 345 transitions. Second operand 9 states. [2020-10-16 12:26:23,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:23,003 INFO L93 Difference]: Finished difference Result 169 states and 403 transitions. [2020-10-16 12:26:23,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:23,005 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:23,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:23,006 INFO L225 Difference]: With dead ends: 169 [2020-10-16 12:26:23,006 INFO L226 Difference]: Without dead ends: 167 [2020-10-16 12:26:23,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:23,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-16 12:26:23,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 135. [2020-10-16 12:26:23,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-16 12:26:23,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 339 transitions. [2020-10-16 12:26:23,011 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 339 transitions. Word has length 13 [2020-10-16 12:26:23,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:23,011 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 339 transitions. [2020-10-16 12:26:23,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:23,011 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 339 transitions. [2020-10-16 12:26:23,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:23,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:23,012 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:23,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-16 12:26:23,213 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:23,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:23,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1730148032, now seen corresponding path program 26 times [2020-10-16 12:26:23,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:23,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689051711] [2020-10-16 12:26:23,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:23,292 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:23,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689051711] [2020-10-16 12:26:23,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403062851] [2020-10-16 12:26:23,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:23,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:23,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:23,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:23,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:23,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:23,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:23,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:23,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [158717788] [2020-10-16 12:26:23,574 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:23,575 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:23,576 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 30 transitions. [2020-10-16 12:26:23,576 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:23,591 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:23,592 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:23,601 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:23,601 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:23,607 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:23,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:23,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:23,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:23,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:23,609 INFO L87 Difference]: Start difference. First operand 135 states and 339 transitions. Second operand 9 states. [2020-10-16 12:26:23,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:23,698 INFO L93 Difference]: Finished difference Result 169 states and 403 transitions. [2020-10-16 12:26:23,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:23,698 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:23,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:23,700 INFO L225 Difference]: With dead ends: 169 [2020-10-16 12:26:23,700 INFO L226 Difference]: Without dead ends: 167 [2020-10-16 12:26:23,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:23,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-16 12:26:23,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 136. [2020-10-16 12:26:23,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-16 12:26:23,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 342 transitions. [2020-10-16 12:26:23,705 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 342 transitions. Word has length 13 [2020-10-16 12:26:23,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:23,706 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 342 transitions. [2020-10-16 12:26:23,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:23,706 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 342 transitions. [2020-10-16 12:26:23,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:23,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:23,707 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:23,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-16 12:26:23,919 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:23,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:23,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1730148993, now seen corresponding path program 27 times [2020-10-16 12:26:23,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:23,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536191490] [2020-10-16 12:26:23,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:23,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:24,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536191490] [2020-10-16 12:26:24,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324009336] [2020-10-16 12:26:24,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:24,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:26:24,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:24,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:24,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:24,181 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:24,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:24,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:24,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1472728620] [2020-10-16 12:26:24,181 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:24,182 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:24,184 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 30 transitions. [2020-10-16 12:26:24,184 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:24,215 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:24,216 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:24,225 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:24,226 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:24,232 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:24,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:24,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:24,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:24,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:24,234 INFO L87 Difference]: Start difference. First operand 136 states and 342 transitions. Second operand 9 states. [2020-10-16 12:26:24,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:24,318 INFO L93 Difference]: Finished difference Result 171 states and 408 transitions. [2020-10-16 12:26:24,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:24,319 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:24,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:24,321 INFO L225 Difference]: With dead ends: 171 [2020-10-16 12:26:24,321 INFO L226 Difference]: Without dead ends: 169 [2020-10-16 12:26:24,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:24,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-16 12:26:24,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 133. [2020-10-16 12:26:24,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-16 12:26:24,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 333 transitions. [2020-10-16 12:26:24,326 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 333 transitions. Word has length 13 [2020-10-16 12:26:24,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:24,326 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 333 transitions. [2020-10-16 12:26:24,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:24,326 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 333 transitions. [2020-10-16 12:26:24,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:24,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:24,327 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:24,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-10-16 12:26:24,540 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:24,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:24,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1731041762, now seen corresponding path program 28 times [2020-10-16 12:26:24,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:24,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852345965] [2020-10-16 12:26:24,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:24,618 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:24,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852345965] [2020-10-16 12:26:24,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898457237] [2020-10-16 12:26:24,619 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:24,665 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:24,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:24,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:24,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:24,785 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:24,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:24,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:24,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [882941610] [2020-10-16 12:26:24,786 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:24,788 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:24,790 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-16 12:26:24,790 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:24,806 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:24,806 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:24,818 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:24,818 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:24,826 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:24,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:24,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:24,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:24,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:24,827 INFO L87 Difference]: Start difference. First operand 133 states and 333 transitions. Second operand 9 states. [2020-10-16 12:26:24,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:24,930 INFO L93 Difference]: Finished difference Result 171 states and 407 transitions. [2020-10-16 12:26:24,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:24,930 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:24,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:24,932 INFO L225 Difference]: With dead ends: 171 [2020-10-16 12:26:24,932 INFO L226 Difference]: Without dead ends: 169 [2020-10-16 12:26:24,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:24,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-16 12:26:24,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 135. [2020-10-16 12:26:24,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-16 12:26:24,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 339 transitions. [2020-10-16 12:26:24,937 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 339 transitions. Word has length 13 [2020-10-16 12:26:24,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:24,937 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 339 transitions. [2020-10-16 12:26:24,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:24,937 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 339 transitions. [2020-10-16 12:26:24,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:24,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:24,938 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:25,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-16 12:26:25,148 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:25,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:25,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1731042723, now seen corresponding path program 29 times [2020-10-16 12:26:25,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:25,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275770774] [2020-10-16 12:26:25,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:25,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:25,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275770774] [2020-10-16 12:26:25,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062776119] [2020-10-16 12:26:25,226 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:25,278 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:25,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:25,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:25,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:25,405 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:25,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:25,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:25,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1194572907] [2020-10-16 12:26:25,407 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:25,408 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:25,412 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-16 12:26:25,412 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:25,426 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:25,426 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:25,433 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:25,433 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:25,441 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:25,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:25,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:25,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:25,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:25,442 INFO L87 Difference]: Start difference. First operand 135 states and 339 transitions. Second operand 9 states. [2020-10-16 12:26:25,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:25,583 INFO L93 Difference]: Finished difference Result 174 states and 413 transitions. [2020-10-16 12:26:25,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:25,583 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:25,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:25,585 INFO L225 Difference]: With dead ends: 174 [2020-10-16 12:26:25,585 INFO L226 Difference]: Without dead ends: 172 [2020-10-16 12:26:25,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:25,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-16 12:26:25,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 134. [2020-10-16 12:26:25,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-16 12:26:25,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 336 transitions. [2020-10-16 12:26:25,591 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 336 transitions. Word has length 13 [2020-10-16 12:26:25,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:25,592 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 336 transitions. [2020-10-16 12:26:25,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:25,592 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 336 transitions. [2020-10-16 12:26:25,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:25,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:25,593 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:25,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-16 12:26:25,806 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:25,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:25,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1731071553, now seen corresponding path program 30 times [2020-10-16 12:26:25,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:25,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19060414] [2020-10-16 12:26:25,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:25,890 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:25,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19060414] [2020-10-16 12:26:25,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682919909] [2020-10-16 12:26:25,891 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:25,930 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:26:25,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:25,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:25,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:26,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:26,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:26,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:26,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [731953260] [2020-10-16 12:26:26,063 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:26,064 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:26,067 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-16 12:26:26,067 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:26,078 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:26,079 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:26,085 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:26,085 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:26,094 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:26,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:26,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:26,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:26,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:26,095 INFO L87 Difference]: Start difference. First operand 134 states and 336 transitions. Second operand 9 states. [2020-10-16 12:26:26,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:26,203 INFO L93 Difference]: Finished difference Result 171 states and 407 transitions. [2020-10-16 12:26:26,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:26,204 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:26,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:26,205 INFO L225 Difference]: With dead ends: 171 [2020-10-16 12:26:26,205 INFO L226 Difference]: Without dead ends: 169 [2020-10-16 12:26:26,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:26,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-16 12:26:26,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 135. [2020-10-16 12:26:26,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-16 12:26:26,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 339 transitions. [2020-10-16 12:26:26,210 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 339 transitions. Word has length 13 [2020-10-16 12:26:26,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:26,210 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 339 transitions. [2020-10-16 12:26:26,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:26,210 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 339 transitions. [2020-10-16 12:26:26,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:26,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:26,211 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:26,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2020-10-16 12:26:26,422 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:26,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:26,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1731072514, now seen corresponding path program 31 times [2020-10-16 12:26:26,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:26,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478711578] [2020-10-16 12:26:26,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:26,509 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:26,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478711578] [2020-10-16 12:26:26,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520235226] [2020-10-16 12:26:26,510 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:26,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:26,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:26,699 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:26,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:26,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:26,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [316898430] [2020-10-16 12:26:26,700 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:26,701 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:26,702 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-16 12:26:26,702 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:26,718 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:26,718 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:26,724 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:26,725 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:26,729 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:26,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:26,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:26,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:26,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:26,731 INFO L87 Difference]: Start difference. First operand 135 states and 339 transitions. Second operand 9 states. [2020-10-16 12:26:26,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:26,852 INFO L93 Difference]: Finished difference Result 171 states and 409 transitions. [2020-10-16 12:26:26,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:26,852 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:26,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:26,854 INFO L225 Difference]: With dead ends: 171 [2020-10-16 12:26:26,854 INFO L226 Difference]: Without dead ends: 169 [2020-10-16 12:26:26,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:26,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-16 12:26:26,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 134. [2020-10-16 12:26:26,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-16 12:26:26,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 334 transitions. [2020-10-16 12:26:26,859 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 334 transitions. Word has length 13 [2020-10-16 12:26:26,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:26,859 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 334 transitions. [2020-10-16 12:26:26,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:26,860 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 334 transitions. [2020-10-16 12:26:26,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:26,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:26,860 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:27,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-10-16 12:26:27,065 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:27,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:27,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1758747392, now seen corresponding path program 32 times [2020-10-16 12:26:27,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:27,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892779030] [2020-10-16 12:26:27,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:27,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:27,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892779030] [2020-10-16 12:26:27,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753581770] [2020-10-16 12:26:27,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:27,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:27,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:27,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:27,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:27,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:27,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:27,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:27,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1007077862] [2020-10-16 12:26:27,323 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:27,324 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:27,327 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 33 transitions. [2020-10-16 12:26:27,327 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:27,328 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:27,328 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:27,361 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:27,361 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:27,380 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:27,380 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:27,389 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:27,390 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:27,394 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [17197#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:26:27,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:27,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:27,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:27,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:27,395 INFO L87 Difference]: Start difference. First operand 134 states and 334 transitions. Second operand 10 states. [2020-10-16 12:26:27,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:27,521 INFO L93 Difference]: Finished difference Result 172 states and 410 transitions. [2020-10-16 12:26:27,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:27,521 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:27,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:27,522 INFO L225 Difference]: With dead ends: 172 [2020-10-16 12:26:27,522 INFO L226 Difference]: Without dead ends: 170 [2020-10-16 12:26:27,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:26:27,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-16 12:26:27,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 136. [2020-10-16 12:26:27,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-16 12:26:27,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 340 transitions. [2020-10-16 12:26:27,526 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 340 transitions. Word has length 13 [2020-10-16 12:26:27,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:27,527 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 340 transitions. [2020-10-16 12:26:27,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:27,527 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 340 transitions. [2020-10-16 12:26:27,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:27,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:27,528 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:27,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:27,731 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:27,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:27,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1758748353, now seen corresponding path program 33 times [2020-10-16 12:26:27,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:27,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871475460] [2020-10-16 12:26:27,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:27,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:27,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871475460] [2020-10-16 12:26:27,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366431294] [2020-10-16 12:26:27,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:27,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:26:27,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:27,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:27,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:27,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:27,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:27,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:27,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2053907430] [2020-10-16 12:26:27,985 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:27,986 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:27,987 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 33 transitions. [2020-10-16 12:26:27,987 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:27,989 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:27,989 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:28,018 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:28,018 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:28,042 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:28,042 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:28,052 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:28,052 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:28,060 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [17699#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:26:28,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:28,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:28,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:28,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:28,062 INFO L87 Difference]: Start difference. First operand 136 states and 340 transitions. Second operand 10 states. [2020-10-16 12:26:28,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:28,194 INFO L93 Difference]: Finished difference Result 175 states and 416 transitions. [2020-10-16 12:26:28,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:28,195 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:28,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:28,196 INFO L225 Difference]: With dead ends: 175 [2020-10-16 12:26:28,197 INFO L226 Difference]: Without dead ends: 173 [2020-10-16 12:26:28,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:26:28,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-16 12:26:28,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 137. [2020-10-16 12:26:28,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-16 12:26:28,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 342 transitions. [2020-10-16 12:26:28,202 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 342 transitions. Word has length 13 [2020-10-16 12:26:28,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:28,202 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 342 transitions. [2020-10-16 12:26:28,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:28,202 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 342 transitions. [2020-10-16 12:26:28,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:28,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:28,203 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:28,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-16 12:26:28,409 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:28,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:28,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1758777183, now seen corresponding path program 34 times [2020-10-16 12:26:28,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:28,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723304606] [2020-10-16 12:26:28,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:28,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:28,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723304606] [2020-10-16 12:26:28,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980836114] [2020-10-16 12:26:28,505 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:28,561 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:28,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:28,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:28,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:28,692 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:28,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:28,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:28,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [174829921] [2020-10-16 12:26:28,693 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:28,694 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:28,696 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 33 transitions. [2020-10-16 12:26:28,696 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:28,698 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:28,698 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:28,726 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:28,726 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:28,747 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:28,747 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:28,766 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:28,766 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:28,774 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [18206#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:26:28,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:28,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:28,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:28,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:28,775 INFO L87 Difference]: Start difference. First operand 137 states and 342 transitions. Second operand 10 states. [2020-10-16 12:26:28,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:28,892 INFO L93 Difference]: Finished difference Result 173 states and 411 transitions. [2020-10-16 12:26:28,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:28,893 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:28,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:28,895 INFO L225 Difference]: With dead ends: 173 [2020-10-16 12:26:28,895 INFO L226 Difference]: Without dead ends: 171 [2020-10-16 12:26:28,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:26:28,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-16 12:26:28,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 139. [2020-10-16 12:26:28,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-16 12:26:28,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 347 transitions. [2020-10-16 12:26:28,899 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 347 transitions. Word has length 13 [2020-10-16 12:26:28,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:28,900 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 347 transitions. [2020-10-16 12:26:28,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:28,900 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 347 transitions. [2020-10-16 12:26:28,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:28,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:28,901 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:29,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:29,114 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:29,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:29,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1758778144, now seen corresponding path program 35 times [2020-10-16 12:26:29,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:29,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296581550] [2020-10-16 12:26:29,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:29,200 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:29,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296581550] [2020-10-16 12:26:29,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845432438] [2020-10-16 12:26:29,200 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:29,254 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:26:29,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:29,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:29,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:29,369 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:29,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:29,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:29,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2012472326] [2020-10-16 12:26:29,370 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:29,371 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:29,373 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 33 transitions. [2020-10-16 12:26:29,373 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:29,375 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:29,375 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:29,402 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:29,403 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:29,426 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:29,427 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:29,444 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:29,445 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:29,450 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [18715#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:26:29,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:29,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:29,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:29,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:29,451 INFO L87 Difference]: Start difference. First operand 139 states and 347 transitions. Second operand 10 states. [2020-10-16 12:26:29,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:29,575 INFO L93 Difference]: Finished difference Result 177 states and 419 transitions. [2020-10-16 12:26:29,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:29,576 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:29,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:29,578 INFO L225 Difference]: With dead ends: 177 [2020-10-16 12:26:29,578 INFO L226 Difference]: Without dead ends: 175 [2020-10-16 12:26:29,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:26:29,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-16 12:26:29,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 137. [2020-10-16 12:26:29,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-16 12:26:29,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 341 transitions. [2020-10-16 12:26:29,583 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 341 transitions. Word has length 13 [2020-10-16 12:26:29,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:29,583 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 341 transitions. [2020-10-16 12:26:29,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:29,584 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 341 transitions. [2020-10-16 12:26:29,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:29,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:29,584 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:29,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-10-16 12:26:29,795 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:29,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:29,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1759670913, now seen corresponding path program 36 times [2020-10-16 12:26:29,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:29,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608333725] [2020-10-16 12:26:29,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:29,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:29,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608333725] [2020-10-16 12:26:29,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398523073] [2020-10-16 12:26:29,895 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:29,937 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:26:29,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:29,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:29,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:30,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:30,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:30,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:30,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [695903143] [2020-10-16 12:26:30,087 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:30,088 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:30,091 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 40 transitions. [2020-10-16 12:26:30,091 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:30,101 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:30,101 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:30,137 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:30,138 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:30,159 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:30,159 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:30,186 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:30,186 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:30,188 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:30,188 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:30,207 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:30,207 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:30,214 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [19224#(and (<= ~j~0 (+ (* 2 ~i~0) 1)) (= ~i~0 1)), 19225#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:26:30,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:26:30,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:30,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:26:30,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:30,216 INFO L87 Difference]: Start difference. First operand 137 states and 341 transitions. Second operand 11 states. [2020-10-16 12:26:30,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:30,313 INFO L93 Difference]: Finished difference Result 179 states and 422 transitions. [2020-10-16 12:26:30,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:26:30,313 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-10-16 12:26:30,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:30,315 INFO L225 Difference]: With dead ends: 179 [2020-10-16 12:26:30,315 INFO L226 Difference]: Without dead ends: 177 [2020-10-16 12:26:30,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:26:30,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-16 12:26:30,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 136. [2020-10-16 12:26:30,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-16 12:26:30,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 338 transitions. [2020-10-16 12:26:30,319 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 338 transitions. Word has length 13 [2020-10-16 12:26:30,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:30,320 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 338 transitions. [2020-10-16 12:26:30,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:26:30,320 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 338 transitions. [2020-10-16 12:26:30,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:30,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:30,321 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:30,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:30,534 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:30,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:30,534 INFO L82 PathProgramCache]: Analyzing trace with hash 9395951, now seen corresponding path program 37 times [2020-10-16 12:26:30,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:30,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769343724] [2020-10-16 12:26:30,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:30,703 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:30,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769343724] [2020-10-16 12:26:30,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394147475] [2020-10-16 12:26:30,705 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:30,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:30,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:30,935 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:30,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:30,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:30,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2094706633] [2020-10-16 12:26:30,936 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:30,938 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:30,973 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-10-16 12:26:30,973 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:30,986 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:30,987 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:31,006 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:31,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:31,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:31,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:31,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:31,007 INFO L87 Difference]: Start difference. First operand 136 states and 338 transitions. Second operand 9 states. [2020-10-16 12:26:31,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:31,093 INFO L93 Difference]: Finished difference Result 182 states and 430 transitions. [2020-10-16 12:26:31,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:31,094 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:31,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:31,095 INFO L225 Difference]: With dead ends: 182 [2020-10-16 12:26:31,096 INFO L226 Difference]: Without dead ends: 180 [2020-10-16 12:26:31,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:31,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-16 12:26:31,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 141. [2020-10-16 12:26:31,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-16 12:26:31,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 353 transitions. [2020-10-16 12:26:31,104 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 353 transitions. Word has length 13 [2020-10-16 12:26:31,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:31,104 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 353 transitions. [2020-10-16 12:26:31,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:31,105 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 353 transitions. [2020-10-16 12:26:31,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:31,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:31,106 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:31,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-10-16 12:26:31,306 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:31,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:31,307 INFO L82 PathProgramCache]: Analyzing trace with hash 9396912, now seen corresponding path program 38 times [2020-10-16 12:26:31,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:31,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231438574] [2020-10-16 12:26:31,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:31,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:31,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231438574] [2020-10-16 12:26:31,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029971784] [2020-10-16 12:26:31,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:31,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:31,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:31,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:31,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:31,593 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:31,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:31,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:31,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1544666939] [2020-10-16 12:26:31,594 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:31,596 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:31,599 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-10-16 12:26:31,599 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:31,607 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:31,608 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:31,624 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:31,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:31,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:31,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:31,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:31,626 INFO L87 Difference]: Start difference. First operand 141 states and 353 transitions. Second operand 9 states. [2020-10-16 12:26:31,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:31,714 INFO L93 Difference]: Finished difference Result 185 states and 436 transitions. [2020-10-16 12:26:31,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:31,714 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:31,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:31,716 INFO L225 Difference]: With dead ends: 185 [2020-10-16 12:26:31,716 INFO L226 Difference]: Without dead ends: 183 [2020-10-16 12:26:31,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:31,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-16 12:26:31,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 140. [2020-10-16 12:26:31,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-16 12:26:31,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 350 transitions. [2020-10-16 12:26:31,721 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 350 transitions. Word has length 13 [2020-10-16 12:26:31,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:31,721 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 350 transitions. [2020-10-16 12:26:31,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:31,721 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 350 transitions. [2020-10-16 12:26:31,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:31,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:31,722 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:31,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-10-16 12:26:31,933 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:31,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:31,933 INFO L82 PathProgramCache]: Analyzing trace with hash 9425742, now seen corresponding path program 39 times [2020-10-16 12:26:31,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:31,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750648520] [2020-10-16 12:26:31,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:32,032 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:32,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750648520] [2020-10-16 12:26:32,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112897645] [2020-10-16 12:26:32,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:32,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:26:32,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:32,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:32,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:32,226 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:32,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:32,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:32,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [357619865] [2020-10-16 12:26:32,227 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:32,228 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:32,229 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:26:32,230 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:32,246 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:32,246 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:32,252 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:32,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:32,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:32,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:32,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:32,253 INFO L87 Difference]: Start difference. First operand 140 states and 350 transitions. Second operand 9 states. [2020-10-16 12:26:32,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:32,355 INFO L93 Difference]: Finished difference Result 185 states and 436 transitions. [2020-10-16 12:26:32,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:32,356 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:32,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:32,357 INFO L225 Difference]: With dead ends: 185 [2020-10-16 12:26:32,357 INFO L226 Difference]: Without dead ends: 183 [2020-10-16 12:26:32,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:32,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-16 12:26:32,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 140. [2020-10-16 12:26:32,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-16 12:26:32,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 350 transitions. [2020-10-16 12:26:32,361 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 350 transitions. Word has length 13 [2020-10-16 12:26:32,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:32,362 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 350 transitions. [2020-10-16 12:26:32,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:32,362 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 350 transitions. [2020-10-16 12:26:32,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:32,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:32,363 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:32,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-16 12:26:32,574 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:32,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:32,575 INFO L82 PathProgramCache]: Analyzing trace with hash 9426703, now seen corresponding path program 40 times [2020-10-16 12:26:32,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:32,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500089101] [2020-10-16 12:26:32,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:32,681 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:32,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500089101] [2020-10-16 12:26:32,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121453162] [2020-10-16 12:26:32,681 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:32,745 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:32,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:32,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:32,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:32,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:32,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:32,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:32,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [710869931] [2020-10-16 12:26:32,909 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:32,910 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:32,914 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:26:32,914 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:32,930 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:32,931 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:32,940 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:32,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:32,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:32,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:32,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:32,941 INFO L87 Difference]: Start difference. First operand 140 states and 350 transitions. Second operand 9 states. [2020-10-16 12:26:33,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:33,065 INFO L93 Difference]: Finished difference Result 186 states and 438 transitions. [2020-10-16 12:26:33,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:33,066 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:33,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:33,068 INFO L225 Difference]: With dead ends: 186 [2020-10-16 12:26:33,068 INFO L226 Difference]: Without dead ends: 184 [2020-10-16 12:26:33,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:33,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-16 12:26:33,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 138. [2020-10-16 12:26:33,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-16 12:26:33,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 344 transitions. [2020-10-16 12:26:33,074 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 344 transitions. Word has length 13 [2020-10-16 12:26:33,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:33,074 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 344 transitions. [2020-10-16 12:26:33,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:33,075 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 344 transitions. [2020-10-16 12:26:33,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:33,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:33,075 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:33,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2020-10-16 12:26:33,285 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:33,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:33,286 INFO L82 PathProgramCache]: Analyzing trace with hash 10319472, now seen corresponding path program 41 times [2020-10-16 12:26:33,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:33,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106054555] [2020-10-16 12:26:33,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:33,376 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:33,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106054555] [2020-10-16 12:26:33,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239700164] [2020-10-16 12:26:33,377 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:33,427 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:33,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:33,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:33,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:33,594 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:33,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:33,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:33,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1128315617] [2020-10-16 12:26:33,595 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:33,597 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:33,600 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:26:33,601 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:33,602 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:33,602 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:33,639 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:33,640 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:33,659 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [21810#(and (<= (+ ~i~0 (* 3 ~j~0)) 11) (< ~i~0 377))] [2020-10-16 12:26:33,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:33,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:33,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:33,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:33,661 INFO L87 Difference]: Start difference. First operand 138 states and 344 transitions. Second operand 10 states. [2020-10-16 12:26:33,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:33,876 INFO L93 Difference]: Finished difference Result 198 states and 464 transitions. [2020-10-16 12:26:33,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 12:26:33,877 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:33,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:33,879 INFO L225 Difference]: With dead ends: 198 [2020-10-16 12:26:33,879 INFO L226 Difference]: Without dead ends: 196 [2020-10-16 12:26:33,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:26:33,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-16 12:26:33,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 142. [2020-10-16 12:26:33,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-16 12:26:33,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 358 transitions. [2020-10-16 12:26:33,886 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 358 transitions. Word has length 13 [2020-10-16 12:26:33,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:33,886 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 358 transitions. [2020-10-16 12:26:33,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:33,886 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 358 transitions. [2020-10-16 12:26:33,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:33,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:33,888 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:34,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:34,100 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:34,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:34,101 INFO L82 PathProgramCache]: Analyzing trace with hash 10320433, now seen corresponding path program 42 times [2020-10-16 12:26:34,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:34,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931243322] [2020-10-16 12:26:34,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:34,212 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:34,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931243322] [2020-10-16 12:26:34,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663193980] [2020-10-16 12:26:34,213 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:34,277 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 12:26:34,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:34,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:34,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:34,389 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:34,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:34,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:34,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [191761512] [2020-10-16 12:26:34,389 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:34,391 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:34,393 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:26:34,393 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:34,396 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:34,396 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:34,407 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:34,408 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:34,437 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [22354#(and (<= (+ (* 2 ~i~0) (* 3 ~j~0)) 13) (< ~i~0 377))] [2020-10-16 12:26:34,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:34,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:34,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:34,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:34,438 INFO L87 Difference]: Start difference. First operand 142 states and 358 transitions. Second operand 10 states. [2020-10-16 12:26:34,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:34,607 INFO L93 Difference]: Finished difference Result 197 states and 462 transitions. [2020-10-16 12:26:34,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 12:26:34,608 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:34,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:34,609 INFO L225 Difference]: With dead ends: 197 [2020-10-16 12:26:34,609 INFO L226 Difference]: Without dead ends: 195 [2020-10-16 12:26:34,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:26:34,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-16 12:26:34,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 141. [2020-10-16 12:26:34,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-16 12:26:34,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 355 transitions. [2020-10-16 12:26:34,615 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 355 transitions. Word has length 13 [2020-10-16 12:26:34,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:34,616 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 355 transitions. [2020-10-16 12:26:34,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:34,616 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 355 transitions. [2020-10-16 12:26:34,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:34,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:34,616 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:34,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:34,826 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:34,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:34,826 INFO L82 PathProgramCache]: Analyzing trace with hash 10349263, now seen corresponding path program 43 times [2020-10-16 12:26:34,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:34,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153388912] [2020-10-16 12:26:34,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:34,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:34,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153388912] [2020-10-16 12:26:34,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828039145] [2020-10-16 12:26:34,901 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:34,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:34,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:35,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:35,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:35,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:35,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [799684030] [2020-10-16 12:26:35,066 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:35,068 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:35,070 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-10-16 12:26:35,070 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:35,072 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:35,072 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:35,082 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:35,082 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:35,112 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:35,112 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:35,143 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [22896#(and (<= (+ (* 3 ~i~0) (* 2 ~j~0)) 12) (< ~i~0 377)), 22895#(and (<= (+ ~i~0 (* 2 ~j~0)) 12) (< ~i~0 377))] [2020-10-16 12:26:35,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:26:35,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:35,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:26:35,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:35,144 INFO L87 Difference]: Start difference. First operand 141 states and 355 transitions. Second operand 11 states. [2020-10-16 12:26:35,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:35,373 INFO L93 Difference]: Finished difference Result 199 states and 465 transitions. [2020-10-16 12:26:35,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:35,373 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-10-16 12:26:35,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:35,375 INFO L225 Difference]: With dead ends: 199 [2020-10-16 12:26:35,375 INFO L226 Difference]: Without dead ends: 197 [2020-10-16 12:26:35,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:26:35,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-16 12:26:35,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 142. [2020-10-16 12:26:35,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-16 12:26:35,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 360 transitions. [2020-10-16 12:26:35,380 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 360 transitions. Word has length 13 [2020-10-16 12:26:35,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:35,380 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 360 transitions. [2020-10-16 12:26:35,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:26:35,380 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 360 transitions. [2020-10-16 12:26:35,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:35,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:35,381 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:35,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-10-16 12:26:35,588 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:35,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:35,588 INFO L82 PathProgramCache]: Analyzing trace with hash 10350224, now seen corresponding path program 44 times [2020-10-16 12:26:35,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:35,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309166006] [2020-10-16 12:26:35,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:35,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:35,664 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:35,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309166006] [2020-10-16 12:26:35,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79775225] [2020-10-16 12:26:35,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:35,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:35,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:35,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:35,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:35,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:35,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:35,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:35,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [764108362] [2020-10-16 12:26:35,852 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:35,853 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:35,856 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:26:35,856 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:35,859 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:35,859 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:35,865 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:35,865 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:35,895 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:35,895 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:35,936 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:35,936 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:35,963 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:35,964 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:35,995 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [23445#(and (<= ~j~0 9) (< ~i~0 377)), 23446#(and (<= (+ ~i~0 ~j~0) 9) (< ~i~0 377)), 23447#(and (< ~i~0 377) (<= (+ (* 2 ~i~0) ~j~0) 9)), 23448#(and (<= (+ (* 3 ~i~0) ~j~0) 9) (< ~i~0 377))] [2020-10-16 12:26:35,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:26:35,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:35,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:26:35,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:26:35,996 INFO L87 Difference]: Start difference. First operand 142 states and 360 transitions. Second operand 13 states. [2020-10-16 12:26:36,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:36,267 INFO L93 Difference]: Finished difference Result 214 states and 509 transitions. [2020-10-16 12:26:36,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:36,268 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2020-10-16 12:26:36,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:36,269 INFO L225 Difference]: With dead ends: 214 [2020-10-16 12:26:36,270 INFO L226 Difference]: Without dead ends: 209 [2020-10-16 12:26:36,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=218, Invalid=484, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:26:36,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-16 12:26:36,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 141. [2020-10-16 12:26:36,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-16 12:26:36,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 359 transitions. [2020-10-16 12:26:36,274 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 359 transitions. Word has length 13 [2020-10-16 12:26:36,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:36,275 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 359 transitions. [2020-10-16 12:26:36,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:26:36,275 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 359 transitions. [2020-10-16 12:26:36,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:36,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:36,275 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:36,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:36,488 INFO L429 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:36,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:36,488 INFO L82 PathProgramCache]: Analyzing trace with hash 646656193, now seen corresponding path program 45 times [2020-10-16 12:26:36,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:36,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705991212] [2020-10-16 12:26:36,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:36,571 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:36,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705991212] [2020-10-16 12:26:36,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562482177] [2020-10-16 12:26:36,572 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:36,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:26:36,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:36,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:36,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:36,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:36,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:36,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:36,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [101069039] [2020-10-16 12:26:36,746 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:36,746 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:36,748 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 39 transitions. [2020-10-16 12:26:36,748 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:36,757 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:36,757 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:36,781 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:36,782 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:36,812 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:36,813 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:36,847 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:36,847 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:36,861 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [24012#(and (<= ~j~0 10) (< ~i~0 377)), 24013#(and (<= (+ ~i~0 ~j~0) 10) (< ~i~0 377)), 24014#(and (<= (+ (* 2 ~i~0) ~j~0) 10) (< ~i~0 377))] [2020-10-16 12:26:36,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:26:36,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:36,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:26:36,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:36,862 INFO L87 Difference]: Start difference. First operand 141 states and 359 transitions. Second operand 12 states. [2020-10-16 12:26:37,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:37,099 INFO L93 Difference]: Finished difference Result 215 states and 508 transitions. [2020-10-16 12:26:37,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:37,099 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2020-10-16 12:26:37,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:37,101 INFO L225 Difference]: With dead ends: 215 [2020-10-16 12:26:37,101 INFO L226 Difference]: Without dead ends: 210 [2020-10-16 12:26:37,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=193, Invalid=407, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:26:37,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-16 12:26:37,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 139. [2020-10-16 12:26:37,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-16 12:26:37,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 351 transitions. [2020-10-16 12:26:37,105 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 351 transitions. Word has length 13 [2020-10-16 12:26:37,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:37,105 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 351 transitions. [2020-10-16 12:26:37,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:26:37,106 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 351 transitions. [2020-10-16 12:26:37,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:37,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:37,106 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:37,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-16 12:26:37,307 INFO L429 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:37,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:37,308 INFO L82 PathProgramCache]: Analyzing trace with hash 667181231, now seen corresponding path program 46 times [2020-10-16 12:26:37,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:37,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316078708] [2020-10-16 12:26:37,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:37,391 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:37,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316078708] [2020-10-16 12:26:37,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621943391] [2020-10-16 12:26:37,392 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:37,444 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:37,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:37,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:37,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:37,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:37,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:37,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:37,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [547419301] [2020-10-16 12:26:37,580 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:37,581 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:37,583 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 41 transitions. [2020-10-16 12:26:37,584 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:37,589 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:37,590 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:37,617 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:37,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:37,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:37,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:37,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:37,618 INFO L87 Difference]: Start difference. First operand 139 states and 351 transitions. Second operand 9 states. [2020-10-16 12:26:37,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:37,715 INFO L93 Difference]: Finished difference Result 174 states and 420 transitions. [2020-10-16 12:26:37,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:26:37,716 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:37,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:37,717 INFO L225 Difference]: With dead ends: 174 [2020-10-16 12:26:37,718 INFO L226 Difference]: Without dead ends: 172 [2020-10-16 12:26:37,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:37,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-16 12:26:37,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 138. [2020-10-16 12:26:37,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-16 12:26:37,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 348 transitions. [2020-10-16 12:26:37,721 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 348 transitions. Word has length 13 [2020-10-16 12:26:37,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:37,721 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 348 transitions. [2020-10-16 12:26:37,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:37,721 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 348 transitions. [2020-10-16 12:26:37,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:37,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:37,722 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:37,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-16 12:26:37,923 INFO L429 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:37,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:37,924 INFO L82 PathProgramCache]: Analyzing trace with hash 667844321, now seen corresponding path program 47 times [2020-10-16 12:26:37,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:37,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925377941] [2020-10-16 12:26:37,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:37,999 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:38,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925377941] [2020-10-16 12:26:38,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553712665] [2020-10-16 12:26:38,000 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:38,040 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:26:38,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:38,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:38,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:38,156 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:38,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:38,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:38,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [509070313] [2020-10-16 12:26:38,157 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:38,158 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:38,161 INFO L258 McrAutomatonBuilder]: Finished intersection with 31 states and 47 transitions. [2020-10-16 12:26:38,161 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:38,169 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:38,170 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:38,189 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:38,190 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:38,237 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [25080#(and (<= ~j~0 6) (< ~i~0 377))] [2020-10-16 12:26:38,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:38,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:38,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:38,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:38,238 INFO L87 Difference]: Start difference. First operand 138 states and 348 transitions. Second operand 10 states. [2020-10-16 12:26:38,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:38,369 INFO L93 Difference]: Finished difference Result 200 states and 477 transitions. [2020-10-16 12:26:38,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:38,370 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:38,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:38,371 INFO L225 Difference]: With dead ends: 200 [2020-10-16 12:26:38,371 INFO L226 Difference]: Without dead ends: 195 [2020-10-16 12:26:38,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:26:38,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-16 12:26:38,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 139. [2020-10-16 12:26:38,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-16 12:26:38,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 342 transitions. [2020-10-16 12:26:38,376 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 342 transitions. Word has length 13 [2020-10-16 12:26:38,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:38,376 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 342 transitions. [2020-10-16 12:26:38,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:38,377 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 342 transitions. [2020-10-16 12:26:38,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:38,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:38,377 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:38,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-10-16 12:26:38,588 INFO L429 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:38,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:38,588 INFO L82 PathProgramCache]: Analyzing trace with hash 668767842, now seen corresponding path program 48 times [2020-10-16 12:26:38,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:38,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736322068] [2020-10-16 12:26:38,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:38,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:38,657 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:38,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736322068] [2020-10-16 12:26:38,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44548883] [2020-10-16 12:26:38,658 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:38,700 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 12:26:38,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:38,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:38,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:38,855 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:38,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:38,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:38,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [477614458] [2020-10-16 12:26:38,856 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:38,857 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:38,860 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-10-16 12:26:38,860 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:38,876 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:38,876 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:38,899 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [25620#(and (<= ~j~0 11) (< ~i~0 377))] [2020-10-16 12:26:38,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:38,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:38,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:38,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:38,900 INFO L87 Difference]: Start difference. First operand 139 states and 342 transitions. Second operand 10 states. [2020-10-16 12:26:39,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:39,149 INFO L93 Difference]: Finished difference Result 205 states and 488 transitions. [2020-10-16 12:26:39,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:39,150 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:39,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:39,151 INFO L225 Difference]: With dead ends: 205 [2020-10-16 12:26:39,151 INFO L226 Difference]: Without dead ends: 200 [2020-10-16 12:26:39,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=371, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:26:39,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-16 12:26:39,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 139. [2020-10-16 12:26:39,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-16 12:26:39,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 342 transitions. [2020-10-16 12:26:39,155 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 342 transitions. Word has length 13 [2020-10-16 12:26:39,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:39,156 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 342 transitions. [2020-10-16 12:26:39,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:39,156 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 342 transitions. [2020-10-16 12:26:39,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:39,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:39,156 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:39,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2020-10-16 12:26:39,357 INFO L429 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:39,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:39,358 INFO L82 PathProgramCache]: Analyzing trace with hash 695810382, now seen corresponding path program 49 times [2020-10-16 12:26:39,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:39,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135286393] [2020-10-16 12:26:39,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:39,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:39,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:39,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135286393] [2020-10-16 12:26:39,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062492863] [2020-10-16 12:26:39,430 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:39,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:39,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:39,595 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:39,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:39,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:39,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1072875821] [2020-10-16 12:26:39,596 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:39,597 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:39,599 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-16 12:26:39,599 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:39,607 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:39,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:39,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:39,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:39,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:39,608 INFO L87 Difference]: Start difference. First operand 139 states and 342 transitions. Second operand 9 states. [2020-10-16 12:26:39,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:39,891 INFO L93 Difference]: Finished difference Result 199 states and 464 transitions. [2020-10-16 12:26:39,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:39,892 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:39,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:39,893 INFO L225 Difference]: With dead ends: 199 [2020-10-16 12:26:39,893 INFO L226 Difference]: Without dead ends: 197 [2020-10-16 12:26:39,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:26:39,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-16 12:26:39,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 140. [2020-10-16 12:26:39,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-16 12:26:39,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 347 transitions. [2020-10-16 12:26:39,897 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 347 transitions. Word has length 13 [2020-10-16 12:26:39,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:39,898 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 347 transitions. [2020-10-16 12:26:39,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:39,898 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 347 transitions. [2020-10-16 12:26:39,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:39,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:39,899 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:40,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-10-16 12:26:40,108 INFO L429 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:40,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:40,108 INFO L82 PathProgramCache]: Analyzing trace with hash 695811343, now seen corresponding path program 50 times [2020-10-16 12:26:40,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:40,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891009881] [2020-10-16 12:26:40,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:40,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:40,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891009881] [2020-10-16 12:26:40,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853678287] [2020-10-16 12:26:40,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:40,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:40,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:40,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:40,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:40,328 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:40,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:40,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:40,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [623186085] [2020-10-16 12:26:40,328 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:40,329 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:40,331 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:26:40,331 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:40,338 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:40,338 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:40,363 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:40,363 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:40,393 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [26717#(and (< ~i~0 377) (<= ~j~0 13)), 26718#(and (<= (+ ~i~0 ~j~0) 13) (< ~i~0 377))] [2020-10-16 12:26:40,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:26:40,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:40,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:26:40,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:40,394 INFO L87 Difference]: Start difference. First operand 140 states and 347 transitions. Second operand 11 states. [2020-10-16 12:26:40,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:40,704 INFO L93 Difference]: Finished difference Result 200 states and 478 transitions. [2020-10-16 12:26:40,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:40,704 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-10-16 12:26:40,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:40,706 INFO L225 Difference]: With dead ends: 200 [2020-10-16 12:26:40,706 INFO L226 Difference]: Without dead ends: 195 [2020-10-16 12:26:40,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=450, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:26:40,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-16 12:26:40,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 139. [2020-10-16 12:26:40,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-16 12:26:40,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 342 transitions. [2020-10-16 12:26:40,710 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 342 transitions. Word has length 13 [2020-10-16 12:26:40,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:40,711 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 342 transitions. [2020-10-16 12:26:40,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:26:40,711 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 342 transitions. [2020-10-16 12:26:40,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:40,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:40,711 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:40,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:40,915 INFO L429 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:40,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:40,915 INFO L82 PathProgramCache]: Analyzing trace with hash 696473472, now seen corresponding path program 51 times [2020-10-16 12:26:40,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:40,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345950771] [2020-10-16 12:26:40,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:40,986 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:40,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345950771] [2020-10-16 12:26:40,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172163507] [2020-10-16 12:26:40,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:41,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:26:41,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:41,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:41,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:41,145 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:41,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:41,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:41,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [466139657] [2020-10-16 12:26:41,146 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:41,148 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:41,150 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-16 12:26:41,150 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:41,157 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:41,157 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:41,181 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [27266#(and (<= ~j~0 11) (< ~i~0 377))] [2020-10-16 12:26:41,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:41,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:41,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:41,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:41,182 INFO L87 Difference]: Start difference. First operand 139 states and 342 transitions. Second operand 10 states. [2020-10-16 12:26:41,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:41,491 INFO L93 Difference]: Finished difference Result 200 states and 479 transitions. [2020-10-16 12:26:41,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:41,492 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:41,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:41,494 INFO L225 Difference]: With dead ends: 200 [2020-10-16 12:26:41,494 INFO L226 Difference]: Without dead ends: 195 [2020-10-16 12:26:41,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=189, Invalid=411, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:26:41,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-16 12:26:41,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 139. [2020-10-16 12:26:41,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-16 12:26:41,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 342 transitions. [2020-10-16 12:26:41,498 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 342 transitions. Word has length 13 [2020-10-16 12:26:41,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:41,498 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 342 transitions. [2020-10-16 12:26:41,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:41,499 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 342 transitions. [2020-10-16 12:26:41,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:41,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:41,499 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:41,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:41,711 INFO L429 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:41,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:41,711 INFO L82 PathProgramCache]: Analyzing trace with hash 697396993, now seen corresponding path program 52 times [2020-10-16 12:26:41,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:41,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311040492] [2020-10-16 12:26:41,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:41,790 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:41,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311040492] [2020-10-16 12:26:41,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773315853] [2020-10-16 12:26:41,791 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:41,837 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:41,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:41,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:41,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:41,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:41,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:41,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:41,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1147570228] [2020-10-16 12:26:41,961 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:41,963 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:41,964 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-16 12:26:41,964 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:41,972 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:41,973 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:41,998 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [27814#(and (<= ~j~0 12) (< ~i~0 377))] [2020-10-16 12:26:41,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:41,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:41,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:41,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:42,000 INFO L87 Difference]: Start difference. First operand 139 states and 342 transitions. Second operand 10 states. [2020-10-16 12:26:42,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:42,315 INFO L93 Difference]: Finished difference Result 195 states and 466 transitions. [2020-10-16 12:26:42,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:42,315 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:42,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:42,317 INFO L225 Difference]: With dead ends: 195 [2020-10-16 12:26:42,317 INFO L226 Difference]: Without dead ends: 190 [2020-10-16 12:26:42,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=187, Invalid=413, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:26:42,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-16 12:26:42,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 137. [2020-10-16 12:26:42,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-16 12:26:42,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 332 transitions. [2020-10-16 12:26:42,324 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 332 transitions. Word has length 13 [2020-10-16 12:26:42,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:42,324 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 332 transitions. [2020-10-16 12:26:42,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:42,325 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 332 transitions. [2020-10-16 12:26:42,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:42,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:42,325 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:42,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2020-10-16 12:26:42,526 INFO L429 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:42,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:42,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1534129122, now seen corresponding path program 53 times [2020-10-16 12:26:42,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:42,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702393518] [2020-10-16 12:26:42,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:42,596 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:42,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702393518] [2020-10-16 12:26:42,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958552581] [2020-10-16 12:26:42,596 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:42,636 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:26:42,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:42,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:42,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:42,763 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:42,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:42,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:42,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1667620750] [2020-10-16 12:26:42,764 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:42,765 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:42,767 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 21 transitions. [2020-10-16 12:26:42,767 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:42,777 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:42,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:42,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:42,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:42,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:42,778 INFO L87 Difference]: Start difference. First operand 137 states and 332 transitions. Second operand 9 states. [2020-10-16 12:26:42,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:42,984 INFO L93 Difference]: Finished difference Result 193 states and 445 transitions. [2020-10-16 12:26:42,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 12:26:42,985 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:42,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:42,986 INFO L225 Difference]: With dead ends: 193 [2020-10-16 12:26:42,987 INFO L226 Difference]: Without dead ends: 191 [2020-10-16 12:26:42,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:26:42,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-16 12:26:42,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 139. [2020-10-16 12:26:42,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-16 12:26:42,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 340 transitions. [2020-10-16 12:26:42,991 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 340 transitions. Word has length 13 [2020-10-16 12:26:42,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:42,991 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 340 transitions. [2020-10-16 12:26:42,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:42,991 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 340 transitions. [2020-10-16 12:26:42,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:42,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:42,992 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:43,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:43,193 INFO L429 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:43,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:43,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1534130083, now seen corresponding path program 54 times [2020-10-16 12:26:43,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:43,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756963734] [2020-10-16 12:26:43,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:43,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:43,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756963734] [2020-10-16 12:26:43,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200296573] [2020-10-16 12:26:43,273 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:43,320 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:26:43,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:43,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:43,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:43,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:43,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:43,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:43,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1815774988] [2020-10-16 12:26:43,464 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:43,465 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:43,466 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 21 transitions. [2020-10-16 12:26:43,466 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:43,475 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:43,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:43,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:43,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:43,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:43,475 INFO L87 Difference]: Start difference. First operand 139 states and 340 transitions. Second operand 9 states. [2020-10-16 12:26:43,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:43,678 INFO L93 Difference]: Finished difference Result 195 states and 447 transitions. [2020-10-16 12:26:43,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 12:26:43,678 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:43,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:43,680 INFO L225 Difference]: With dead ends: 195 [2020-10-16 12:26:43,680 INFO L226 Difference]: Without dead ends: 193 [2020-10-16 12:26:43,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:26:43,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-16 12:26:43,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 137. [2020-10-16 12:26:43,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-16 12:26:43,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 334 transitions. [2020-10-16 12:26:43,684 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 334 transitions. Word has length 13 [2020-10-16 12:26:43,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:43,684 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 334 transitions. [2020-10-16 12:26:43,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:43,684 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 334 transitions. [2020-10-16 12:26:43,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:43,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:43,685 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:43,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2020-10-16 12:26:43,886 INFO L429 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:43,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:43,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1534158913, now seen corresponding path program 55 times [2020-10-16 12:26:43,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:43,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513558961] [2020-10-16 12:26:43,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:43,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:43,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513558961] [2020-10-16 12:26:43,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261308824] [2020-10-16 12:26:43,967 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:44,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:44,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:44,120 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:44,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:44,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:44,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1611074254] [2020-10-16 12:26:44,121 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:44,122 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:44,124 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-10-16 12:26:44,124 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:44,125 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:44,125 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:44,160 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [29421#(and (<= (+ ~i~0 (* 2 ~j~0)) 13) (< ~i~0 377))] [2020-10-16 12:26:44,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:44,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:44,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:44,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:44,161 INFO L87 Difference]: Start difference. First operand 137 states and 334 transitions. Second operand 10 states. [2020-10-16 12:26:44,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:44,423 INFO L93 Difference]: Finished difference Result 205 states and 471 transitions. [2020-10-16 12:26:44,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:44,424 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:44,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:44,426 INFO L225 Difference]: With dead ends: 205 [2020-10-16 12:26:44,426 INFO L226 Difference]: Without dead ends: 203 [2020-10-16 12:26:44,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:26:44,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-16 12:26:44,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 136. [2020-10-16 12:26:44,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-16 12:26:44,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 334 transitions. [2020-10-16 12:26:44,430 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 334 transitions. Word has length 13 [2020-10-16 12:26:44,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:44,431 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 334 transitions. [2020-10-16 12:26:44,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:44,431 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 334 transitions. [2020-10-16 12:26:44,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:44,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:44,431 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:44,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:44,632 INFO L429 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:44,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:44,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1554684912, now seen corresponding path program 56 times [2020-10-16 12:26:44,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:44,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947561913] [2020-10-16 12:26:44,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:44,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:44,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947561913] [2020-10-16 12:26:44,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805166630] [2020-10-16 12:26:44,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:44,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:44,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:44,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:44,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:44,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:44,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:44,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:44,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1377149551] [2020-10-16 12:26:44,863 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:44,865 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:44,866 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 21 transitions. [2020-10-16 12:26:44,867 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:44,886 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:44,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:44,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:44,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:44,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:44,887 INFO L87 Difference]: Start difference. First operand 136 states and 334 transitions. Second operand 9 states. [2020-10-16 12:26:45,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:45,137 INFO L93 Difference]: Finished difference Result 200 states and 463 transitions. [2020-10-16 12:26:45,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:45,138 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:45,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:45,139 INFO L225 Difference]: With dead ends: 200 [2020-10-16 12:26:45,140 INFO L226 Difference]: Without dead ends: 198 [2020-10-16 12:26:45,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:26:45,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-16 12:26:45,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 136. [2020-10-16 12:26:45,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-16 12:26:45,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 334 transitions. [2020-10-16 12:26:45,144 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 334 transitions. Word has length 13 [2020-10-16 12:26:45,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:45,144 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 334 transitions. [2020-10-16 12:26:45,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:45,144 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 334 transitions. [2020-10-16 12:26:45,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:45,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:45,145 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:45,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2020-10-16 12:26:45,355 INFO L429 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:45,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:45,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1554685873, now seen corresponding path program 57 times [2020-10-16 12:26:45,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:45,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818465625] [2020-10-16 12:26:45,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:45,432 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:45,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818465625] [2020-10-16 12:26:45,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866223230] [2020-10-16 12:26:45,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:45,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:26:45,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:45,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:45,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:45,616 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:45,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:45,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:45,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1622016950] [2020-10-16 12:26:45,617 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:45,618 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:45,619 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-16 12:26:45,620 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:45,620 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:45,621 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:45,659 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:45,659 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:45,690 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [30505#(and (<= ~j~0 12) (< ~i~0 377)), 30506#(and (<= (+ ~i~0 ~j~0) 12) (< ~i~0 377))] [2020-10-16 12:26:45,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:26:45,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:45,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:26:45,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:45,691 INFO L87 Difference]: Start difference. First operand 136 states and 334 transitions. Second operand 11 states. [2020-10-16 12:26:45,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:45,991 INFO L93 Difference]: Finished difference Result 203 states and 484 transitions. [2020-10-16 12:26:45,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:45,992 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-10-16 12:26:45,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:45,994 INFO L225 Difference]: With dead ends: 203 [2020-10-16 12:26:45,994 INFO L226 Difference]: Without dead ends: 198 [2020-10-16 12:26:45,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=453, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:26:45,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-16 12:26:45,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 138. [2020-10-16 12:26:45,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-16 12:26:45,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 342 transitions. [2020-10-16 12:26:45,998 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 342 transitions. Word has length 13 [2020-10-16 12:26:45,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:45,998 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 342 transitions. [2020-10-16 12:26:45,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:26:45,998 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 342 transitions. [2020-10-16 12:26:45,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:45,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:45,999 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:46,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:46,201 INFO L429 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:46,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:46,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1555348002, now seen corresponding path program 58 times [2020-10-16 12:26:46,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:46,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724396844] [2020-10-16 12:26:46,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:46,274 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:46,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724396844] [2020-10-16 12:26:46,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320622210] [2020-10-16 12:26:46,275 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:46,317 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:46,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:46,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:46,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:46,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:46,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:46,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [88589399] [2020-10-16 12:26:46,432 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:46,433 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:46,434 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-10-16 12:26:46,434 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:46,443 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:46,443 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:46,468 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [31055#(and (<= ~j~0 9) (< ~i~0 377))] [2020-10-16 12:26:46,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:46,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:46,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:46,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:46,469 INFO L87 Difference]: Start difference. First operand 138 states and 342 transitions. Second operand 10 states. [2020-10-16 12:26:46,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:46,775 INFO L93 Difference]: Finished difference Result 205 states and 489 transitions. [2020-10-16 12:26:46,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:46,776 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:46,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:46,778 INFO L225 Difference]: With dead ends: 205 [2020-10-16 12:26:46,778 INFO L226 Difference]: Without dead ends: 200 [2020-10-16 12:26:46,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:26:46,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-16 12:26:46,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 138. [2020-10-16 12:26:46,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-16 12:26:46,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 342 transitions. [2020-10-16 12:26:46,782 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 342 transitions. Word has length 13 [2020-10-16 12:26:46,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:46,782 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 342 transitions. [2020-10-16 12:26:46,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:46,782 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 342 transitions. [2020-10-16 12:26:46,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:46,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:46,783 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:46,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2020-10-16 12:26:46,995 INFO L429 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:46,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:46,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1555609394, now seen corresponding path program 59 times [2020-10-16 12:26:46,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:46,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641609773] [2020-10-16 12:26:46,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:47,062 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:47,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641609773] [2020-10-16 12:26:47,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746570494] [2020-10-16 12:26:47,062 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:47,107 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:26:47,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:47,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:47,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:47,222 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:47,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:47,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:47,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1075072170] [2020-10-16 12:26:47,223 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:47,224 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:47,226 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-16 12:26:47,226 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:47,238 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:47,238 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:47,264 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:47,264 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:47,311 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [31606#(and (<= ~j~0 11) (< ~i~0 377)), 31607#(and (<= (+ ~i~0 ~j~0) 11) (< ~i~0 377)), 31608#(and (<= (+ (* 3 ~i~0) ~j~0) 11) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-16 12:26:47,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:26:47,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:47,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:26:47,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:47,312 INFO L87 Difference]: Start difference. First operand 138 states and 342 transitions. Second operand 12 states. [2020-10-16 12:26:47,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:47,618 INFO L93 Difference]: Finished difference Result 213 states and 504 transitions. [2020-10-16 12:26:47,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:47,619 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2020-10-16 12:26:47,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:47,621 INFO L225 Difference]: With dead ends: 213 [2020-10-16 12:26:47,621 INFO L226 Difference]: Without dead ends: 208 [2020-10-16 12:26:47,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=206, Invalid=496, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:26:47,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-16 12:26:47,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 135. [2020-10-16 12:26:47,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-16 12:26:47,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 332 transitions. [2020-10-16 12:26:47,625 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 332 transitions. Word has length 13 [2020-10-16 12:26:47,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:47,625 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 332 transitions. [2020-10-16 12:26:47,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:26:47,626 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 332 transitions. [2020-10-16 12:26:47,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:47,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:47,626 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:47,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2020-10-16 12:26:47,827 INFO L429 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:47,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:47,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1556271523, now seen corresponding path program 60 times [2020-10-16 12:26:47,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:47,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164873516] [2020-10-16 12:26:47,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:47,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:47,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164873516] [2020-10-16 12:26:47,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565293730] [2020-10-16 12:26:47,904 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:47,942 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:26:47,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:47,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:47,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:48,060 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:48,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:48,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:48,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1936001442] [2020-10-16 12:26:48,064 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:48,066 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:48,067 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-10-16 12:26:48,067 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:48,075 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:48,075 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:48,102 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [32161#(and (< ~i~0 377) (<= ~j~0 13))] [2020-10-16 12:26:48,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:48,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:48,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:48,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:48,103 INFO L87 Difference]: Start difference. First operand 135 states and 332 transitions. Second operand 10 states. [2020-10-16 12:26:48,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:48,440 INFO L93 Difference]: Finished difference Result 197 states and 464 transitions. [2020-10-16 12:26:48,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:48,441 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:48,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:48,442 INFO L225 Difference]: With dead ends: 197 [2020-10-16 12:26:48,443 INFO L226 Difference]: Without dead ends: 192 [2020-10-16 12:26:48,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=187, Invalid=413, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:26:48,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-16 12:26:48,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 133. [2020-10-16 12:26:48,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-16 12:26:48,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 322 transitions. [2020-10-16 12:26:48,446 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 322 transitions. Word has length 13 [2020-10-16 12:26:48,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:48,446 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 322 transitions. [2020-10-16 12:26:48,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:48,446 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 322 transitions. [2020-10-16 12:26:48,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:48,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:48,447 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:48,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:48,650 INFO L429 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:48,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:48,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1583314063, now seen corresponding path program 61 times [2020-10-16 12:26:48,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:48,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864306052] [2020-10-16 12:26:48,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:48,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:48,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864306052] [2020-10-16 12:26:48,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105833259] [2020-10-16 12:26:48,722 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:48,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:48,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:48,990 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:48,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:48,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:48,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [145110918] [2020-10-16 12:26:48,991 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:48,992 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:48,994 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-10-16 12:26:48,994 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:49,007 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:49,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:49,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:49,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:49,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:49,008 INFO L87 Difference]: Start difference. First operand 133 states and 322 transitions. Second operand 9 states. [2020-10-16 12:26:49,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:49,197 INFO L93 Difference]: Finished difference Result 199 states and 454 transitions. [2020-10-16 12:26:49,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 12:26:49,197 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:49,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:49,198 INFO L225 Difference]: With dead ends: 199 [2020-10-16 12:26:49,198 INFO L226 Difference]: Without dead ends: 197 [2020-10-16 12:26:49,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:26:49,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-16 12:26:49,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 132. [2020-10-16 12:26:49,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-16 12:26:49,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 319 transitions. [2020-10-16 12:26:49,202 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 319 transitions. Word has length 13 [2020-10-16 12:26:49,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:49,203 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 319 transitions. [2020-10-16 12:26:49,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:49,203 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 319 transitions. [2020-10-16 12:26:49,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:49,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:49,203 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:49,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:49,404 INFO L429 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:49,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:49,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1583977153, now seen corresponding path program 62 times [2020-10-16 12:26:49,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:49,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902742145] [2020-10-16 12:26:49,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:49,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:49,477 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:49,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902742145] [2020-10-16 12:26:49,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221350285] [2020-10-16 12:26:49,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:49,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:49,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:49,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:49,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:49,655 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:49,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:49,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:49,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [925521621] [2020-10-16 12:26:49,656 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:49,657 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:49,658 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-16 12:26:49,658 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:49,676 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:49,677 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:49,702 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [33220#(and (<= ~j~0 10) (< ~i~0 377))] [2020-10-16 12:26:49,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:49,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:49,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:49,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:49,703 INFO L87 Difference]: Start difference. First operand 132 states and 319 transitions. Second operand 10 states. [2020-10-16 12:26:49,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:49,973 INFO L93 Difference]: Finished difference Result 209 states and 491 transitions. [2020-10-16 12:26:49,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:49,973 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:49,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:49,974 INFO L225 Difference]: With dead ends: 209 [2020-10-16 12:26:49,975 INFO L226 Difference]: Without dead ends: 204 [2020-10-16 12:26:49,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=379, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:26:49,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-16 12:26:49,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 130. [2020-10-16 12:26:49,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-16 12:26:49,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 305 transitions. [2020-10-16 12:26:49,979 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 305 transitions. Word has length 13 [2020-10-16 12:26:49,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:49,979 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 305 transitions. [2020-10-16 12:26:49,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:49,980 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 305 transitions. [2020-10-16 12:26:49,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:49,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:49,980 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:50,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:50,191 INFO L429 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:50,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:50,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1725446472, now seen corresponding path program 6 times [2020-10-16 12:26:50,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:50,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262702766] [2020-10-16 12:26:50,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:50,274 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:50,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262702766] [2020-10-16 12:26:50,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535943969] [2020-10-16 12:26:50,275 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:50,325 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-16 12:26:50,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:50,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:26:50,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:50,469 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 12:26:50,497 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:50,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:50,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-16 12:26:50,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [948062976] [2020-10-16 12:26:50,498 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:50,500 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:50,502 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 41 transitions. [2020-10-16 12:26:50,502 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:50,518 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:50,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:50,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:50,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:50,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:50,519 INFO L87 Difference]: Start difference. First operand 130 states and 305 transitions. Second operand 10 states. [2020-10-16 12:26:50,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:50,677 INFO L93 Difference]: Finished difference Result 185 states and 431 transitions. [2020-10-16 12:26:50,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:26:50,678 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:50,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:50,679 INFO L225 Difference]: With dead ends: 185 [2020-10-16 12:26:50,679 INFO L226 Difference]: Without dead ends: 180 [2020-10-16 12:26:50,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:26:50,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-16 12:26:50,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 139. [2020-10-16 12:26:50,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-16 12:26:50,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 341 transitions. [2020-10-16 12:26:50,686 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 341 transitions. Word has length 13 [2020-10-16 12:26:50,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:50,686 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 341 transitions. [2020-10-16 12:26:50,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:50,687 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 341 transitions. [2020-10-16 12:26:50,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:50,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:50,687 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:50,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:50,896 INFO L429 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:50,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:50,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1934382410, now seen corresponding path program 6 times [2020-10-16 12:26:50,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:50,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881248804] [2020-10-16 12:26:50,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:51,046 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:51,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881248804] [2020-10-16 12:26:51,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015738920] [2020-10-16 12:26:51,046 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:51,084 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-16 12:26:51,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:51,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:26:51,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:51,254 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:51,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:51,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:26:51,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [984547651] [2020-10-16 12:26:51,255 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:51,256 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:51,258 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-16 12:26:51,258 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:51,259 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:51,259 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:51,287 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:51,287 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:51,322 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:51,322 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:51,364 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:51,364 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:51,399 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:51,400 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:51,439 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:51,439 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:51,471 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [34290#(and (<= ~j~0 7) (< ~i~0 377)), 34291#(and (= ~i~0 1) (<= (+ ~i~0 ~j~0) 7)), 34292#(and (= ~i~0 1) (<= (+ (* 2 ~i~0) ~j~0) 7)), 34293#(and (= ~i~0 1) (<= (+ (* 3 ~i~0) ~j~0) 7)), 34294#(and (<= ~j~0 (+ (* 2 ~i~0) 1)) (= ~i~0 1)), 34295#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:26:51,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:26:51,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:51,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:26:51,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:26:51,472 INFO L87 Difference]: Start difference. First operand 139 states and 341 transitions. Second operand 16 states. [2020-10-16 12:26:51,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:51,603 INFO L93 Difference]: Finished difference Result 215 states and 514 transitions. [2020-10-16 12:26:51,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:26:51,603 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 13 [2020-10-16 12:26:51,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:51,605 INFO L225 Difference]: With dead ends: 215 [2020-10-16 12:26:51,605 INFO L226 Difference]: Without dead ends: 209 [2020-10-16 12:26:51,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:26:51,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-16 12:26:51,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 150. [2020-10-16 12:26:51,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-16 12:26:51,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 377 transitions. [2020-10-16 12:26:51,610 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 377 transitions. Word has length 13 [2020-10-16 12:26:51,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:51,610 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 377 transitions. [2020-10-16 12:26:51,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:26:51,610 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 377 transitions. [2020-10-16 12:26:51,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:26:51,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:51,611 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:51,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2020-10-16 12:26:51,812 INFO L429 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:51,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:51,812 INFO L82 PathProgramCache]: Analyzing trace with hash 2094057644, now seen corresponding path program 63 times [2020-10-16 12:26:51,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:51,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418157363] [2020-10-16 12:26:51,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:51,909 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:51,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418157363] [2020-10-16 12:26:51,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665612479] [2020-10-16 12:26:51,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:51,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:26:51,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:51,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:26:51,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:52,145 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:52,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:52,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:26:52,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1243365573] [2020-10-16 12:26:52,146 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:52,148 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:52,150 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 37 transitions. [2020-10-16 12:26:52,150 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:52,166 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:52,167 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:52,171 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:52,172 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:52,180 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:52,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:52,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:52,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:52,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:52,181 INFO L87 Difference]: Start difference. First operand 150 states and 377 transitions. Second operand 10 states. [2020-10-16 12:26:52,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:52,241 INFO L93 Difference]: Finished difference Result 187 states and 451 transitions. [2020-10-16 12:26:52,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:52,241 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:26:52,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:52,244 INFO L225 Difference]: With dead ends: 187 [2020-10-16 12:26:52,244 INFO L226 Difference]: Without dead ends: 185 [2020-10-16 12:26:52,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:52,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-16 12:26:52,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 158. [2020-10-16 12:26:52,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-16 12:26:52,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 401 transitions. [2020-10-16 12:26:52,248 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 401 transitions. Word has length 14 [2020-10-16 12:26:52,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:52,248 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 401 transitions. [2020-10-16 12:26:52,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:52,249 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 401 transitions. [2020-10-16 12:26:52,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:26:52,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:52,249 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:52,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:52,450 INFO L429 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:52,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:52,450 INFO L82 PathProgramCache]: Analyzing trace with hash 2094058605, now seen corresponding path program 64 times [2020-10-16 12:26:52,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:52,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113619857] [2020-10-16 12:26:52,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:52,555 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:52,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113619857] [2020-10-16 12:26:52,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755548979] [2020-10-16 12:26:52,556 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:52,596 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:52,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:52,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:26:52,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:52,750 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:52,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:52,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:26:52,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1701938505] [2020-10-16 12:26:52,750 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:52,752 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:52,754 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:26:52,754 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:52,769 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:52,769 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:52,772 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:52,772 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:52,778 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:52,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:52,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:52,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:52,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:52,779 INFO L87 Difference]: Start difference. First operand 158 states and 401 transitions. Second operand 10 states. [2020-10-16 12:26:52,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:52,862 INFO L93 Difference]: Finished difference Result 196 states and 469 transitions. [2020-10-16 12:26:52,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:52,863 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:26:52,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:52,865 INFO L225 Difference]: With dead ends: 196 [2020-10-16 12:26:52,865 INFO L226 Difference]: Without dead ends: 194 [2020-10-16 12:26:52,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:52,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-16 12:26:52,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 156. [2020-10-16 12:26:52,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-16 12:26:52,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 395 transitions. [2020-10-16 12:26:52,868 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 395 transitions. Word has length 14 [2020-10-16 12:26:52,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:52,869 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 395 transitions. [2020-10-16 12:26:52,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:52,869 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 395 transitions. [2020-10-16 12:26:52,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:26:52,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:52,870 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:53,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2020-10-16 12:26:53,077 INFO L429 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:53,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:53,077 INFO L82 PathProgramCache]: Analyzing trace with hash 2094087435, now seen corresponding path program 65 times [2020-10-16 12:26:53,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:53,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130739288] [2020-10-16 12:26:53,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:53,182 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:53,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130739288] [2020-10-16 12:26:53,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856400025] [2020-10-16 12:26:53,183 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:53,223 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:26:53,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:53,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:26:53,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:53,422 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:53,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:53,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:26:53,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1902786440] [2020-10-16 12:26:53,423 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:53,424 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:53,426 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-10-16 12:26:53,426 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:53,432 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:53,432 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:53,444 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:53,444 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:53,451 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:53,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:53,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:53,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:53,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:53,453 INFO L87 Difference]: Start difference. First operand 156 states and 395 transitions. Second operand 10 states. [2020-10-16 12:26:53,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:53,567 INFO L93 Difference]: Finished difference Result 198 states and 473 transitions. [2020-10-16 12:26:53,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:53,568 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:26:53,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:53,569 INFO L225 Difference]: With dead ends: 198 [2020-10-16 12:26:53,569 INFO L226 Difference]: Without dead ends: 196 [2020-10-16 12:26:53,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=225, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:26:53,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-16 12:26:53,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 157. [2020-10-16 12:26:53,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-16 12:26:53,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 398 transitions. [2020-10-16 12:26:53,574 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 398 transitions. Word has length 14 [2020-10-16 12:26:53,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:53,574 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 398 transitions. [2020-10-16 12:26:53,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:53,574 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 398 transitions. [2020-10-16 12:26:53,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:26:53,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:53,575 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:53,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:53,775 INFO L429 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:53,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:53,776 INFO L82 PathProgramCache]: Analyzing trace with hash 2094088396, now seen corresponding path program 66 times [2020-10-16 12:26:53,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:53,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716310556] [2020-10-16 12:26:53,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:53,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:53,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716310556] [2020-10-16 12:26:53,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238407556] [2020-10-16 12:26:53,883 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:53,925 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 12:26:53,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:53,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:26:53,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:54,087 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:54,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:54,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:26:54,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1200979425] [2020-10-16 12:26:54,087 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:54,088 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:54,091 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-10-16 12:26:54,091 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:54,098 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:54,098 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:54,110 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:54,110 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:54,118 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:54,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:54,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:54,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:54,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:54,120 INFO L87 Difference]: Start difference. First operand 157 states and 398 transitions. Second operand 10 states. [2020-10-16 12:26:54,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:54,235 INFO L93 Difference]: Finished difference Result 200 states and 478 transitions. [2020-10-16 12:26:54,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:54,236 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:26:54,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:54,237 INFO L225 Difference]: With dead ends: 200 [2020-10-16 12:26:54,237 INFO L226 Difference]: Without dead ends: 198 [2020-10-16 12:26:54,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:26:54,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-16 12:26:54,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 154. [2020-10-16 12:26:54,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-16 12:26:54,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 389 transitions. [2020-10-16 12:26:54,242 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 389 transitions. Word has length 14 [2020-10-16 12:26:54,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:54,242 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 389 transitions. [2020-10-16 12:26:54,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:54,242 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 389 transitions. [2020-10-16 12:26:54,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:26:54,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:54,243 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:54,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-10-16 12:26:54,456 INFO L429 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:54,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:54,456 INFO L82 PathProgramCache]: Analyzing trace with hash 2094981165, now seen corresponding path program 67 times [2020-10-16 12:26:54,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:54,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035423143] [2020-10-16 12:26:54,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:54,587 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:54,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035423143] [2020-10-16 12:26:54,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210145778] [2020-10-16 12:26:54,588 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:54,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:54,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:26:54,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:54,890 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:54,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:54,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:26:54,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1271756611] [2020-10-16 12:26:54,891 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:54,892 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:54,895 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-10-16 12:26:54,895 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:54,899 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:54,899 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:54,913 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:54,913 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:54,921 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:54,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:54,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:54,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:54,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:54,922 INFO L87 Difference]: Start difference. First operand 154 states and 389 transitions. Second operand 10 states. [2020-10-16 12:26:55,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:55,062 INFO L93 Difference]: Finished difference Result 198 states and 473 transitions. [2020-10-16 12:26:55,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:55,063 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:26:55,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:55,065 INFO L225 Difference]: With dead ends: 198 [2020-10-16 12:26:55,065 INFO L226 Difference]: Without dead ends: 196 [2020-10-16 12:26:55,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=251, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:26:55,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-16 12:26:55,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 156. [2020-10-16 12:26:55,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-16 12:26:55,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 395 transitions. [2020-10-16 12:26:55,068 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 395 transitions. Word has length 14 [2020-10-16 12:26:55,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:55,068 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 395 transitions. [2020-10-16 12:26:55,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:55,069 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 395 transitions. [2020-10-16 12:26:55,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:26:55,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:55,069 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:55,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:55,270 INFO L429 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:55,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:55,271 INFO L82 PathProgramCache]: Analyzing trace with hash 2094982126, now seen corresponding path program 68 times [2020-10-16 12:26:55,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:55,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828160873] [2020-10-16 12:26:55,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:55,375 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:55,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828160873] [2020-10-16 12:26:55,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379496565] [2020-10-16 12:26:55,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:55,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:55,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:55,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:26:55,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:58,286 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:58,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:58,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:26:58,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [80274706] [2020-10-16 12:26:58,286 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:58,287 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:58,289 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-10-16 12:26:58,289 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:58,293 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:58,293 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:58,316 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:58,316 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:58,342 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:58,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:58,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:58,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:58,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=187, Unknown=1, NotChecked=0, Total=272 [2020-10-16 12:26:58,343 INFO L87 Difference]: Start difference. First operand 156 states and 395 transitions. Second operand 10 states. [2020-10-16 12:26:58,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:58,509 INFO L93 Difference]: Finished difference Result 201 states and 479 transitions. [2020-10-16 12:26:58,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:58,510 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:26:58,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:58,511 INFO L225 Difference]: With dead ends: 201 [2020-10-16 12:26:58,511 INFO L226 Difference]: Without dead ends: 199 [2020-10-16 12:26:58,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=126, Invalid=253, Unknown=1, NotChecked=0, Total=380 [2020-10-16 12:26:58,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-16 12:26:58,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 155. [2020-10-16 12:26:58,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-16 12:26:58,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 392 transitions. [2020-10-16 12:26:58,514 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 392 transitions. Word has length 14 [2020-10-16 12:26:58,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:58,515 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 392 transitions. [2020-10-16 12:26:58,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:58,515 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 392 transitions. [2020-10-16 12:26:58,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:26:58,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:58,516 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:58,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:58,722 INFO L429 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:58,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:58,723 INFO L82 PathProgramCache]: Analyzing trace with hash 2095010956, now seen corresponding path program 69 times [2020-10-16 12:26:58,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:58,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459611660] [2020-10-16 12:26:58,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:58,830 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:58,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459611660] [2020-10-16 12:26:58,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038511757] [2020-10-16 12:26:58,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:58,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:26:58,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:58,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:26:58,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:59,157 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:59,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:59,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:26:59,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1384758296] [2020-10-16 12:26:59,157 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:59,158 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:59,160 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-10-16 12:26:59,161 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:59,164 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:59,164 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:59,180 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:59,181 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:59,187 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:59,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:59,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:59,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:59,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:59,188 INFO L87 Difference]: Start difference. First operand 155 states and 392 transitions. Second operand 10 states. [2020-10-16 12:26:59,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:59,334 INFO L93 Difference]: Finished difference Result 198 states and 473 transitions. [2020-10-16 12:26:59,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:59,335 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:26:59,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:59,337 INFO L225 Difference]: With dead ends: 198 [2020-10-16 12:26:59,337 INFO L226 Difference]: Without dead ends: 196 [2020-10-16 12:26:59,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:26:59,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-16 12:26:59,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 156. [2020-10-16 12:26:59,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-16 12:26:59,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 395 transitions. [2020-10-16 12:26:59,341 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 395 transitions. Word has length 14 [2020-10-16 12:26:59,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:59,341 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 395 transitions. [2020-10-16 12:26:59,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:59,342 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 395 transitions. [2020-10-16 12:26:59,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:26:59,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:59,343 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:59,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:59,544 INFO L429 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:59,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:59,545 INFO L82 PathProgramCache]: Analyzing trace with hash 2095011917, now seen corresponding path program 70 times [2020-10-16 12:26:59,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:59,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2328431] [2020-10-16 12:26:59,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:59,644 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:59,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2328431] [2020-10-16 12:26:59,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073097350] [2020-10-16 12:26:59,644 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:59,684 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:59,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:59,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:26:59,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:59,859 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:59,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:59,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:26:59,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1623954426] [2020-10-16 12:26:59,859 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:59,860 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:59,862 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-10-16 12:26:59,862 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:59,866 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:59,866 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:59,886 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:59,886 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:59,893 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:59,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:59,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:59,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:59,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:59,894 INFO L87 Difference]: Start difference. First operand 156 states and 395 transitions. Second operand 10 states. [2020-10-16 12:27:00,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:00,030 INFO L93 Difference]: Finished difference Result 201 states and 480 transitions. [2020-10-16 12:27:00,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:27:00,031 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:00,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:00,032 INFO L225 Difference]: With dead ends: 201 [2020-10-16 12:27:00,032 INFO L226 Difference]: Without dead ends: 199 [2020-10-16 12:27:00,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:27:00,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-16 12:27:00,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 152. [2020-10-16 12:27:00,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-16 12:27:00,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 383 transitions. [2020-10-16 12:27:00,036 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 383 transitions. Word has length 14 [2020-10-16 12:27:00,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:00,036 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 383 transitions. [2020-10-16 12:27:00,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:00,036 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 383 transitions. [2020-10-16 12:27:00,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:00,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:00,037 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:00,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:00,242 INFO L429 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:00,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:00,242 INFO L82 PathProgramCache]: Analyzing trace with hash 2122686795, now seen corresponding path program 71 times [2020-10-16 12:27:00,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:00,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145567918] [2020-10-16 12:27:00,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:00,343 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:00,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145567918] [2020-10-16 12:27:00,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357732631] [2020-10-16 12:27:00,344 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:00,383 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:27:00,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:00,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:00,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:00,529 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:00,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:00,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:00,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [323171063] [2020-10-16 12:27:00,531 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:00,532 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:00,533 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:27:00,533 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:00,536 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:00,536 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:00,548 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:00,549 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:00,561 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:00,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:00,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:00,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:00,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:00,562 INFO L87 Difference]: Start difference. First operand 152 states and 383 transitions. Second operand 10 states. [2020-10-16 12:27:00,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:00,728 INFO L93 Difference]: Finished difference Result 198 states and 473 transitions. [2020-10-16 12:27:00,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:27:00,729 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:00,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:00,731 INFO L225 Difference]: With dead ends: 198 [2020-10-16 12:27:00,732 INFO L226 Difference]: Without dead ends: 196 [2020-10-16 12:27:00,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=285, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:00,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-16 12:27:00,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 155. [2020-10-16 12:27:00,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-16 12:27:00,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 392 transitions. [2020-10-16 12:27:00,735 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 392 transitions. Word has length 14 [2020-10-16 12:27:00,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:00,736 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 392 transitions. [2020-10-16 12:27:00,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:00,736 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 392 transitions. [2020-10-16 12:27:00,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:00,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:00,736 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:00,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:00,937 INFO L429 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:00,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:00,938 INFO L82 PathProgramCache]: Analyzing trace with hash 2122687756, now seen corresponding path program 72 times [2020-10-16 12:27:00,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:00,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543506379] [2020-10-16 12:27:00,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:01,037 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:01,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543506379] [2020-10-16 12:27:01,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342968583] [2020-10-16 12:27:01,037 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:01,076 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 12:27:01,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:01,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:01,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:01,243 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:01,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:01,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:01,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2006502779] [2020-10-16 12:27:01,244 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:01,245 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:01,247 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:27:01,247 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:01,249 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:01,249 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:01,264 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:01,264 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:01,270 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:01,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:01,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:01,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:01,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:01,271 INFO L87 Difference]: Start difference. First operand 155 states and 392 transitions. Second operand 10 states. [2020-10-16 12:27:01,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:01,453 INFO L93 Difference]: Finished difference Result 203 states and 483 transitions. [2020-10-16 12:27:01,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:27:01,453 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:01,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:01,454 INFO L225 Difference]: With dead ends: 203 [2020-10-16 12:27:01,455 INFO L226 Difference]: Without dead ends: 201 [2020-10-16 12:27:01,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=285, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:01,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-16 12:27:01,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 154. [2020-10-16 12:27:01,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-16 12:27:01,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 389 transitions. [2020-10-16 12:27:01,459 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 389 transitions. Word has length 14 [2020-10-16 12:27:01,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:01,459 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 389 transitions. [2020-10-16 12:27:01,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:01,459 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 389 transitions. [2020-10-16 12:27:01,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:01,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:01,460 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:01,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:01,661 INFO L429 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:01,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:01,662 INFO L82 PathProgramCache]: Analyzing trace with hash 2122716586, now seen corresponding path program 73 times [2020-10-16 12:27:01,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:01,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391293894] [2020-10-16 12:27:01,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:01,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:01,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391293894] [2020-10-16 12:27:01,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40397056] [2020-10-16 12:27:01,765 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:01,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:01,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:02,004 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:02,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:02,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:02,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1821912666] [2020-10-16 12:27:02,005 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:02,006 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:02,009 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:27:02,009 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:02,012 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:02,012 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:02,028 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:02,029 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:02,037 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:02,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:02,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:02,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:02,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:02,038 INFO L87 Difference]: Start difference. First operand 154 states and 389 transitions. Second operand 10 states. [2020-10-16 12:27:02,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:02,206 INFO L93 Difference]: Finished difference Result 200 states and 477 transitions. [2020-10-16 12:27:02,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:27:02,207 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:02,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:02,208 INFO L225 Difference]: With dead ends: 200 [2020-10-16 12:27:02,208 INFO L226 Difference]: Without dead ends: 198 [2020-10-16 12:27:02,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:02,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-16 12:27:02,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 155. [2020-10-16 12:27:02,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-16 12:27:02,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 392 transitions. [2020-10-16 12:27:02,213 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 392 transitions. Word has length 14 [2020-10-16 12:27:02,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:02,213 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 392 transitions. [2020-10-16 12:27:02,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:02,213 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 392 transitions. [2020-10-16 12:27:02,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:02,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:02,214 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:02,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:02,424 INFO L429 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:02,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:02,424 INFO L82 PathProgramCache]: Analyzing trace with hash 2122717547, now seen corresponding path program 74 times [2020-10-16 12:27:02,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:02,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109388267] [2020-10-16 12:27:02,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:02,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:02,528 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:02,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109388267] [2020-10-16 12:27:02,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207083099] [2020-10-16 12:27:02,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:02,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:02,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:02,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:02,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:02,724 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:02,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:02,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:02,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [300395921] [2020-10-16 12:27:02,725 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:02,727 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:02,730 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:27:02,730 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:02,733 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:02,733 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:02,749 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:02,750 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:02,760 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:02,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:02,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:02,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:02,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:02,761 INFO L87 Difference]: Start difference. First operand 155 states and 392 transitions. Second operand 10 states. [2020-10-16 12:27:02,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:02,935 INFO L93 Difference]: Finished difference Result 205 states and 488 transitions. [2020-10-16 12:27:02,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:27:02,936 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:02,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:02,938 INFO L225 Difference]: With dead ends: 205 [2020-10-16 12:27:02,938 INFO L226 Difference]: Without dead ends: 203 [2020-10-16 12:27:02,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=286, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:02,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-16 12:27:02,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 153. [2020-10-16 12:27:02,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-16 12:27:02,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 386 transitions. [2020-10-16 12:27:02,942 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 386 transitions. Word has length 14 [2020-10-16 12:27:02,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:02,942 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 386 transitions. [2020-10-16 12:27:02,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:02,942 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 386 transitions. [2020-10-16 12:27:02,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:02,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:02,943 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:03,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2020-10-16 12:27:03,144 INFO L429 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:03,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:03,144 INFO L82 PathProgramCache]: Analyzing trace with hash 2123610316, now seen corresponding path program 75 times [2020-10-16 12:27:03,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:03,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920002902] [2020-10-16 12:27:03,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:03,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:03,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920002902] [2020-10-16 12:27:03,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509260374] [2020-10-16 12:27:03,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:03,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:27:03,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:03,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:03,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:03,469 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:03,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:03,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:03,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [732167118] [2020-10-16 12:27:03,471 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:03,471 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:03,473 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:27:03,473 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:03,481 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:03,482 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:03,500 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:03,500 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:03,507 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:03,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:03,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:03,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:03,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:03,508 INFO L87 Difference]: Start difference. First operand 153 states and 386 transitions. Second operand 10 states. [2020-10-16 12:27:03,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:03,705 INFO L93 Difference]: Finished difference Result 200 states and 477 transitions. [2020-10-16 12:27:03,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:03,705 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:03,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:03,707 INFO L225 Difference]: With dead ends: 200 [2020-10-16 12:27:03,707 INFO L226 Difference]: Without dead ends: 198 [2020-10-16 12:27:03,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:27:03,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-16 12:27:03,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 155. [2020-10-16 12:27:03,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-16 12:27:03,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 392 transitions. [2020-10-16 12:27:03,712 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 392 transitions. Word has length 14 [2020-10-16 12:27:03,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:03,712 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 392 transitions. [2020-10-16 12:27:03,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:03,712 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 392 transitions. [2020-10-16 12:27:03,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:03,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:03,713 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:03,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:03,914 INFO L429 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:03,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:03,914 INFO L82 PathProgramCache]: Analyzing trace with hash 2123611277, now seen corresponding path program 76 times [2020-10-16 12:27:03,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:03,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978725499] [2020-10-16 12:27:03,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:04,012 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:04,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978725499] [2020-10-16 12:27:04,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136703969] [2020-10-16 12:27:04,013 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:04,059 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:04,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:04,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:04,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:04,237 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:04,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:04,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:04,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [504114871] [2020-10-16 12:27:04,238 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:04,240 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:04,242 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:27:04,242 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:04,251 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:04,251 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:04,266 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:04,266 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:04,273 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:04,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:04,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:04,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:04,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:04,274 INFO L87 Difference]: Start difference. First operand 155 states and 392 transitions. Second operand 10 states. [2020-10-16 12:27:04,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:04,439 INFO L93 Difference]: Finished difference Result 203 states and 483 transitions. [2020-10-16 12:27:04,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:27:04,439 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:04,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:04,441 INFO L225 Difference]: With dead ends: 203 [2020-10-16 12:27:04,441 INFO L226 Difference]: Without dead ends: 201 [2020-10-16 12:27:04,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:04,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-16 12:27:04,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 154. [2020-10-16 12:27:04,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-16 12:27:04,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 389 transitions. [2020-10-16 12:27:04,446 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 389 transitions. Word has length 14 [2020-10-16 12:27:04,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:04,446 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 389 transitions. [2020-10-16 12:27:04,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:04,446 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 389 transitions. [2020-10-16 12:27:04,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:04,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:04,447 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:04,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2020-10-16 12:27:04,659 INFO L429 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:04,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:04,659 INFO L82 PathProgramCache]: Analyzing trace with hash 2123640107, now seen corresponding path program 77 times [2020-10-16 12:27:04,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:04,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082062034] [2020-10-16 12:27:04,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:04,764 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:04,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082062034] [2020-10-16 12:27:04,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067632921] [2020-10-16 12:27:04,765 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:04,806 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:27:04,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:04,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:04,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:04,964 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:04,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:04,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:04,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [415472143] [2020-10-16 12:27:04,965 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:04,966 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:04,968 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:27:04,969 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:04,972 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:04,972 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:04,988 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:04,988 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:04,992 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:04,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:04,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:04,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:04,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:04,993 INFO L87 Difference]: Start difference. First operand 154 states and 389 transitions. Second operand 10 states. [2020-10-16 12:27:05,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:05,164 INFO L93 Difference]: Finished difference Result 199 states and 477 transitions. [2020-10-16 12:27:05,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:27:05,165 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:05,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:05,167 INFO L225 Difference]: With dead ends: 199 [2020-10-16 12:27:05,167 INFO L226 Difference]: Without dead ends: 197 [2020-10-16 12:27:05,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:05,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-16 12:27:05,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 155. [2020-10-16 12:27:05,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-16 12:27:05,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 392 transitions. [2020-10-16 12:27:05,171 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 392 transitions. Word has length 14 [2020-10-16 12:27:05,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:05,171 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 392 transitions. [2020-10-16 12:27:05,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:05,171 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 392 transitions. [2020-10-16 12:27:05,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:05,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:05,172 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:05,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:05,379 INFO L429 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:05,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:05,380 INFO L82 PathProgramCache]: Analyzing trace with hash 2123641068, now seen corresponding path program 78 times [2020-10-16 12:27:05,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:05,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143262587] [2020-10-16 12:27:05,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:05,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:05,485 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:05,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143262587] [2020-10-16 12:27:05,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823375508] [2020-10-16 12:27:05,486 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:05,536 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:27:05,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:05,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:05,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:05,683 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:05,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:05,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:05,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1056020540] [2020-10-16 12:27:05,684 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:05,685 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:05,687 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:27:05,687 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:05,692 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:05,692 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:05,714 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:05,715 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:05,721 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:05,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:05,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:05,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:05,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:05,722 INFO L87 Difference]: Start difference. First operand 155 states and 392 transitions. Second operand 10 states. [2020-10-16 12:27:05,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:05,892 INFO L93 Difference]: Finished difference Result 200 states and 480 transitions. [2020-10-16 12:27:05,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:27:05,893 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:05,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:05,895 INFO L225 Difference]: With dead ends: 200 [2020-10-16 12:27:05,895 INFO L226 Difference]: Without dead ends: 198 [2020-10-16 12:27:05,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:05,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-16 12:27:05,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 153. [2020-10-16 12:27:05,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-16 12:27:05,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 384 transitions. [2020-10-16 12:27:05,901 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 384 transitions. Word has length 14 [2020-10-16 12:27:05,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:05,901 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 384 transitions. [2020-10-16 12:27:05,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:05,901 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 384 transitions. [2020-10-16 12:27:05,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:05,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:05,902 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:06,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,87 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:06,103 INFO L429 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:06,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:06,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1313405971, now seen corresponding path program 79 times [2020-10-16 12:27:06,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:06,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914242301] [2020-10-16 12:27:06,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:06,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:06,217 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:06,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914242301] [2020-10-16 12:27:06,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415383881] [2020-10-16 12:27:06,218 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:06,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:06,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:06,405 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:06,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:06,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:06,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1727925441] [2020-10-16 12:27:06,406 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:06,407 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:06,409 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-10-16 12:27:06,409 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:06,421 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:06,421 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:06,457 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:06,457 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:06,480 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:06,480 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:06,483 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:06,483 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:06,492 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [44008#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:27:06,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:06,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:06,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:06,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:06,493 INFO L87 Difference]: Start difference. First operand 153 states and 384 transitions. Second operand 11 states. [2020-10-16 12:27:06,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:06,671 INFO L93 Difference]: Finished difference Result 201 states and 480 transitions. [2020-10-16 12:27:06,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:06,672 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:06,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:06,673 INFO L225 Difference]: With dead ends: 201 [2020-10-16 12:27:06,673 INFO L226 Difference]: Without dead ends: 199 [2020-10-16 12:27:06,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:27:06,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-16 12:27:06,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 156. [2020-10-16 12:27:06,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-16 12:27:06,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 393 transitions. [2020-10-16 12:27:06,677 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 393 transitions. Word has length 14 [2020-10-16 12:27:06,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:06,677 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 393 transitions. [2020-10-16 12:27:06,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:06,677 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 393 transitions. [2020-10-16 12:27:06,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:06,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:06,678 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:06,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:06,879 INFO L429 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:06,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:06,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1313405010, now seen corresponding path program 80 times [2020-10-16 12:27:06,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:06,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019122360] [2020-10-16 12:27:06,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:06,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:06,992 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:06,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019122360] [2020-10-16 12:27:06,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171818227] [2020-10-16 12:27:06,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:07,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:07,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:07,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:07,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:07,199 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:07,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:07,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:07,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [39704088] [2020-10-16 12:27:07,200 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:07,201 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:07,203 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-10-16 12:27:07,203 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:07,215 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:07,215 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:07,251 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:07,251 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:07,273 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:07,273 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:07,279 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:07,280 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:07,284 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [44586#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:27:07,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:07,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:07,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:07,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:07,285 INFO L87 Difference]: Start difference. First operand 156 states and 393 transitions. Second operand 11 states. [2020-10-16 12:27:07,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:07,500 INFO L93 Difference]: Finished difference Result 205 states and 489 transitions. [2020-10-16 12:27:07,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:07,501 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:07,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:07,503 INFO L225 Difference]: With dead ends: 205 [2020-10-16 12:27:07,503 INFO L226 Difference]: Without dead ends: 203 [2020-10-16 12:27:07,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:27:07,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-16 12:27:07,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 155. [2020-10-16 12:27:07,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-16 12:27:07,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 390 transitions. [2020-10-16 12:27:07,507 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 390 transitions. Word has length 14 [2020-10-16 12:27:07,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:07,507 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 390 transitions. [2020-10-16 12:27:07,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:07,507 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 390 transitions. [2020-10-16 12:27:07,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:07,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:07,508 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:07,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:07,709 INFO L429 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:07,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:07,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1313376180, now seen corresponding path program 81 times [2020-10-16 12:27:07,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:07,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771013786] [2020-10-16 12:27:07,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:07,823 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:07,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771013786] [2020-10-16 12:27:07,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504986566] [2020-10-16 12:27:07,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:07,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:27:07,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:07,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:07,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:08,084 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:08,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:08,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:08,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1773646902] [2020-10-16 12:27:08,085 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:08,086 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:08,087 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-10-16 12:27:08,088 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:08,098 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:08,098 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:08,131 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:08,132 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:08,152 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:08,152 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:08,157 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:08,157 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:08,163 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [45166#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:27:08,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:08,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:08,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:08,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:08,165 INFO L87 Difference]: Start difference. First operand 155 states and 390 transitions. Second operand 11 states. [2020-10-16 12:27:08,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:08,344 INFO L93 Difference]: Finished difference Result 205 states and 488 transitions. [2020-10-16 12:27:08,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:08,345 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:08,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:08,347 INFO L225 Difference]: With dead ends: 205 [2020-10-16 12:27:08,347 INFO L226 Difference]: Without dead ends: 203 [2020-10-16 12:27:08,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:27:08,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-16 12:27:08,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 159. [2020-10-16 12:27:08,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-16 12:27:08,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 401 transitions. [2020-10-16 12:27:08,351 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 401 transitions. Word has length 14 [2020-10-16 12:27:08,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:08,351 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 401 transitions. [2020-10-16 12:27:08,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:08,351 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 401 transitions. [2020-10-16 12:27:08,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:08,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:08,352 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:08,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:08,555 INFO L429 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:08,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:08,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1313375219, now seen corresponding path program 82 times [2020-10-16 12:27:08,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:08,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785567549] [2020-10-16 12:27:08,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:08,662 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:08,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785567549] [2020-10-16 12:27:08,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395160445] [2020-10-16 12:27:08,662 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:08,708 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:08,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:08,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:08,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:08,891 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:08,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:08,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:08,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1177247775] [2020-10-16 12:27:08,892 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:08,893 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:08,895 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-10-16 12:27:08,895 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:08,905 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:08,905 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:08,941 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:08,941 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:08,964 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:08,965 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:08,974 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:08,974 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:08,982 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [45754#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:27:08,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:08,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:08,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:08,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:08,983 INFO L87 Difference]: Start difference. First operand 159 states and 401 transitions. Second operand 11 states. [2020-10-16 12:27:09,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:09,173 INFO L93 Difference]: Finished difference Result 208 states and 495 transitions. [2020-10-16 12:27:09,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:09,174 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:09,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:09,176 INFO L225 Difference]: With dead ends: 208 [2020-10-16 12:27:09,176 INFO L226 Difference]: Without dead ends: 206 [2020-10-16 12:27:09,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:27:09,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-16 12:27:09,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 157. [2020-10-16 12:27:09,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-16 12:27:09,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 395 transitions. [2020-10-16 12:27:09,180 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 395 transitions. Word has length 14 [2020-10-16 12:27:09,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:09,180 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 395 transitions. [2020-10-16 12:27:09,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:09,180 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 395 transitions. [2020-10-16 12:27:09,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:09,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:09,181 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:09,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:09,382 INFO L429 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:09,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:09,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1312482450, now seen corresponding path program 83 times [2020-10-16 12:27:09,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:09,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984527822] [2020-10-16 12:27:09,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:09,495 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:09,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984527822] [2020-10-16 12:27:09,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282111973] [2020-10-16 12:27:09,496 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:09,538 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:27:09,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:09,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:09,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:09,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:09,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:09,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:09,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1031028602] [2020-10-16 12:27:09,690 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:09,691 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:09,693 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-10-16 12:27:09,693 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:09,703 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:09,703 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:09,736 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:09,736 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:09,764 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:09,765 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:09,770 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:09,771 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:09,778 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [46341#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:27:09,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:09,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:09,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:09,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:09,779 INFO L87 Difference]: Start difference. First operand 157 states and 395 transitions. Second operand 11 states. [2020-10-16 12:27:09,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:09,980 INFO L93 Difference]: Finished difference Result 206 states and 489 transitions. [2020-10-16 12:27:09,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:27:09,981 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:09,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:09,983 INFO L225 Difference]: With dead ends: 206 [2020-10-16 12:27:09,983 INFO L226 Difference]: Without dead ends: 204 [2020-10-16 12:27:09,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:27:09,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-16 12:27:09,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 161. [2020-10-16 12:27:09,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-16 12:27:09,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 406 transitions. [2020-10-16 12:27:09,987 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 406 transitions. Word has length 14 [2020-10-16 12:27:09,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:09,987 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 406 transitions. [2020-10-16 12:27:09,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:09,987 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 406 transitions. [2020-10-16 12:27:09,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:09,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:09,988 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:10,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2020-10-16 12:27:10,193 INFO L429 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:10,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:10,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1312481489, now seen corresponding path program 84 times [2020-10-16 12:27:10,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:10,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865514974] [2020-10-16 12:27:10,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:10,321 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:10,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865514974] [2020-10-16 12:27:10,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21508250] [2020-10-16 12:27:10,322 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:10,363 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:27:10,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:10,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:10,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:10,524 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:10,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:10,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:10,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [605776075] [2020-10-16 12:27:10,525 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:10,527 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:10,529 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-10-16 12:27:10,529 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:10,539 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:10,539 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:10,572 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:10,572 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:10,591 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:10,591 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:10,595 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:10,595 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:10,603 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [46936#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:27:10,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:10,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:10,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:10,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:10,604 INFO L87 Difference]: Start difference. First operand 161 states and 406 transitions. Second operand 11 states. [2020-10-16 12:27:10,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:10,795 INFO L93 Difference]: Finished difference Result 204 states and 486 transitions. [2020-10-16 12:27:10,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:10,796 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:10,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:10,798 INFO L225 Difference]: With dead ends: 204 [2020-10-16 12:27:10,798 INFO L226 Difference]: Without dead ends: 202 [2020-10-16 12:27:10,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:27:10,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-16 12:27:10,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 160. [2020-10-16 12:27:10,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-16 12:27:10,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 403 transitions. [2020-10-16 12:27:10,802 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 403 transitions. Word has length 14 [2020-10-16 12:27:10,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:10,802 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 403 transitions. [2020-10-16 12:27:10,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:10,802 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 403 transitions. [2020-10-16 12:27:10,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:10,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:10,803 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:11,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:11,004 INFO L429 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:11,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:11,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1312452659, now seen corresponding path program 85 times [2020-10-16 12:27:11,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:11,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921259180] [2020-10-16 12:27:11,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:11,107 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:11,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921259180] [2020-10-16 12:27:11,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598389278] [2020-10-16 12:27:11,108 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:11,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:11,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:11,341 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:11,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:11,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:11,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2124136661] [2020-10-16 12:27:11,342 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:11,343 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:11,346 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-10-16 12:27:11,346 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:11,358 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:11,358 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:11,391 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:11,391 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:11,412 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:11,413 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:11,421 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:11,421 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:11,427 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [47525#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:27:11,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:11,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:11,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:11,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:11,428 INFO L87 Difference]: Start difference. First operand 160 states and 403 transitions. Second operand 11 states. [2020-10-16 12:27:11,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:11,621 INFO L93 Difference]: Finished difference Result 205 states and 487 transitions. [2020-10-16 12:27:11,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:11,622 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:11,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:11,623 INFO L225 Difference]: With dead ends: 205 [2020-10-16 12:27:11,623 INFO L226 Difference]: Without dead ends: 203 [2020-10-16 12:27:11,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:27:11,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-16 12:27:11,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 161. [2020-10-16 12:27:11,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-16 12:27:11,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 405 transitions. [2020-10-16 12:27:11,628 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 405 transitions. Word has length 14 [2020-10-16 12:27:11,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:11,628 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 405 transitions. [2020-10-16 12:27:11,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:11,628 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 405 transitions. [2020-10-16 12:27:11,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:11,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:11,629 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:11,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2020-10-16 12:27:11,830 INFO L429 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:11,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:11,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1312451698, now seen corresponding path program 86 times [2020-10-16 12:27:11,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:11,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258509735] [2020-10-16 12:27:11,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:11,945 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:11,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258509735] [2020-10-16 12:27:11,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856199744] [2020-10-16 12:27:11,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:11,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:11,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:11,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:11,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:12,149 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:12,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:12,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:12,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2072848360] [2020-10-16 12:27:12,150 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:12,151 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:12,154 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-10-16 12:27:12,154 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:12,169 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:12,170 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:12,205 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:12,205 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:12,224 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:12,224 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:12,229 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:12,230 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:12,243 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [48117#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:27:12,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:12,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:12,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:12,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:12,244 INFO L87 Difference]: Start difference. First operand 161 states and 405 transitions. Second operand 11 states. [2020-10-16 12:27:12,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:12,423 INFO L93 Difference]: Finished difference Result 207 states and 491 transitions. [2020-10-16 12:27:12,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:12,424 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:12,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:12,425 INFO L225 Difference]: With dead ends: 207 [2020-10-16 12:27:12,426 INFO L226 Difference]: Without dead ends: 205 [2020-10-16 12:27:12,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:27:12,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-16 12:27:12,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 158. [2020-10-16 12:27:12,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-16 12:27:12,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 396 transitions. [2020-10-16 12:27:12,429 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 396 transitions. Word has length 14 [2020-10-16 12:27:12,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:12,429 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 396 transitions. [2020-10-16 12:27:12,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:12,429 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 396 transitions. [2020-10-16 12:27:12,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:12,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:12,430 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:12,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:12,630 INFO L429 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:12,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:12,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1284776820, now seen corresponding path program 87 times [2020-10-16 12:27:12,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:12,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177172100] [2020-10-16 12:27:12,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:12,760 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:12,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177172100] [2020-10-16 12:27:12,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170952988] [2020-10-16 12:27:12,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:12,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:27:12,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:12,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:12,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:12,987 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:12,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:12,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:12,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1313248178] [2020-10-16 12:27:12,988 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:12,989 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:12,991 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 41 transitions. [2020-10-16 12:27:12,991 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:13,017 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:13,017 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:13,062 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:13,062 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:13,098 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:13,099 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:13,126 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:13,127 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:13,130 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:13,130 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:13,136 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:13,137 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:13,143 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [48705#(and (<= ~j~0 (+ (* 2 ~i~0) 1)) (= ~i~0 1)), 48706#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:27:13,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:27:13,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:13,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:27:13,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:27:13,143 INFO L87 Difference]: Start difference. First operand 158 states and 396 transitions. Second operand 12 states. [2020-10-16 12:27:13,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:13,300 INFO L93 Difference]: Finished difference Result 213 states and 504 transitions. [2020-10-16 12:27:13,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:27:13,301 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:27:13,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:13,302 INFO L225 Difference]: With dead ends: 213 [2020-10-16 12:27:13,303 INFO L226 Difference]: Without dead ends: 211 [2020-10-16 12:27:13,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:27:13,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-16 12:27:13,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 162. [2020-10-16 12:27:13,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-16 12:27:13,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 407 transitions. [2020-10-16 12:27:13,306 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 407 transitions. Word has length 14 [2020-10-16 12:27:13,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:13,307 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 407 transitions. [2020-10-16 12:27:13,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:27:13,307 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 407 transitions. [2020-10-16 12:27:13,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:13,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:13,307 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:13,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:13,508 INFO L429 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:13,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:13,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1284775859, now seen corresponding path program 88 times [2020-10-16 12:27:13,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:13,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584459732] [2020-10-16 12:27:13,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:13,631 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:13,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584459732] [2020-10-16 12:27:13,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151161185] [2020-10-16 12:27:13,632 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:13,672 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:13,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:13,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:13,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:14,933 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:14,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:14,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:14,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [29911019] [2020-10-16 12:27:14,934 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:14,935 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:14,938 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 41 transitions. [2020-10-16 12:27:14,938 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:14,939 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:14,939 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:14,994 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:14,995 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:15,026 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:15,027 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:15,050 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:15,050 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:15,053 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:15,053 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:15,064 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:15,064 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:15,078 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [49306#(and (<= ~j~0 (+ (* 2 ~i~0) 1)) (= ~i~0 1)), 49307#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:27:15,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:27:15,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:15,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:27:15,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:27:15,080 INFO L87 Difference]: Start difference. First operand 162 states and 407 transitions. Second operand 12 states. [2020-10-16 12:27:15,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:15,262 INFO L93 Difference]: Finished difference Result 214 states and 506 transitions. [2020-10-16 12:27:15,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:27:15,263 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:27:15,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:15,264 INFO L225 Difference]: With dead ends: 214 [2020-10-16 12:27:15,264 INFO L226 Difference]: Without dead ends: 212 [2020-10-16 12:27:15,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:27:15,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-16 12:27:15,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 158. [2020-10-16 12:27:15,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-16 12:27:15,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 395 transitions. [2020-10-16 12:27:15,273 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 395 transitions. Word has length 14 [2020-10-16 12:27:15,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:15,274 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 395 transitions. [2020-10-16 12:27:15,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:27:15,276 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 395 transitions. [2020-10-16 12:27:15,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:15,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:15,277 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:15,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-10-16 12:27:15,480 INFO L429 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:15,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:15,480 INFO L82 PathProgramCache]: Analyzing trace with hash 291274206, now seen corresponding path program 89 times [2020-10-16 12:27:15,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:15,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936075029] [2020-10-16 12:27:15,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:15,642 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:15,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936075029] [2020-10-16 12:27:15,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342028755] [2020-10-16 12:27:15,643 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:15,683 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:27:15,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:15,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:15,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:15,848 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:15,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:15,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:15,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [508710391] [2020-10-16 12:27:15,849 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:15,851 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:15,854 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 36 transitions. [2020-10-16 12:27:15,855 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:15,868 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:15,868 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:15,888 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:15,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:15,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:15,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:15,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:15,889 INFO L87 Difference]: Start difference. First operand 158 states and 395 transitions. Second operand 10 states. [2020-10-16 12:27:15,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:15,963 INFO L93 Difference]: Finished difference Result 214 states and 507 transitions. [2020-10-16 12:27:15,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:15,963 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:15,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:15,964 INFO L225 Difference]: With dead ends: 214 [2020-10-16 12:27:15,964 INFO L226 Difference]: Without dead ends: 212 [2020-10-16 12:27:15,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:15,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-16 12:27:15,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 166. [2020-10-16 12:27:15,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-16 12:27:15,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 419 transitions. [2020-10-16 12:27:15,969 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 419 transitions. Word has length 14 [2020-10-16 12:27:15,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:15,969 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 419 transitions. [2020-10-16 12:27:15,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:15,969 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 419 transitions. [2020-10-16 12:27:15,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:15,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:15,970 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:16,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-10-16 12:27:16,174 INFO L429 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:16,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:16,174 INFO L82 PathProgramCache]: Analyzing trace with hash 291275167, now seen corresponding path program 90 times [2020-10-16 12:27:16,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:16,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052938003] [2020-10-16 12:27:16,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:16,326 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:16,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052938003] [2020-10-16 12:27:16,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828988425] [2020-10-16 12:27:16,327 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:16,367 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:27:16,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:16,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:16,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:16,536 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:16,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:16,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:16,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1908167268] [2020-10-16 12:27:16,537 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:16,539 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:16,541 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-10-16 12:27:16,541 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:16,554 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:16,554 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:16,560 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:16,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:16,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:16,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:16,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:16,562 INFO L87 Difference]: Start difference. First operand 166 states and 419 transitions. Second operand 10 states. [2020-10-16 12:27:16,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:16,666 INFO L93 Difference]: Finished difference Result 219 states and 517 transitions. [2020-10-16 12:27:16,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:16,667 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:16,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:16,668 INFO L225 Difference]: With dead ends: 219 [2020-10-16 12:27:16,668 INFO L226 Difference]: Without dead ends: 217 [2020-10-16 12:27:16,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:27:16,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-16 12:27:16,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 163. [2020-10-16 12:27:16,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-16 12:27:16,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 410 transitions. [2020-10-16 12:27:16,673 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 410 transitions. Word has length 14 [2020-10-16 12:27:16,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:16,674 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 410 transitions. [2020-10-16 12:27:16,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:16,674 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 410 transitions. [2020-10-16 12:27:16,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:16,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:16,675 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:16,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:16,876 INFO L429 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:16,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:16,876 INFO L82 PathProgramCache]: Analyzing trace with hash 291303997, now seen corresponding path program 91 times [2020-10-16 12:27:16,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:16,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266119122] [2020-10-16 12:27:16,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:17,006 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:17,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266119122] [2020-10-16 12:27:17,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522019370] [2020-10-16 12:27:17,006 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:17,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:17,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:17,611 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:17,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:17,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:17,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1560887005] [2020-10-16 12:27:17,612 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:17,613 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:17,615 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:27:17,615 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:17,621 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:17,621 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:17,633 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:17,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:17,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:17,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:17,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:17,634 INFO L87 Difference]: Start difference. First operand 163 states and 410 transitions. Second operand 10 states. [2020-10-16 12:27:17,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:17,756 INFO L93 Difference]: Finished difference Result 221 states and 521 transitions. [2020-10-16 12:27:17,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:17,757 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:17,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:17,757 INFO L225 Difference]: With dead ends: 221 [2020-10-16 12:27:17,757 INFO L226 Difference]: Without dead ends: 219 [2020-10-16 12:27:17,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:27:17,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-16 12:27:17,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 165. [2020-10-16 12:27:17,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-16 12:27:17,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 416 transitions. [2020-10-16 12:27:17,762 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 416 transitions. Word has length 14 [2020-10-16 12:27:17,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:17,762 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 416 transitions. [2020-10-16 12:27:17,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:17,762 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 416 transitions. [2020-10-16 12:27:17,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:17,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:17,762 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:17,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-10-16 12:27:17,963 INFO L429 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:17,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:17,964 INFO L82 PathProgramCache]: Analyzing trace with hash 291304958, now seen corresponding path program 92 times [2020-10-16 12:27:17,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:17,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034758957] [2020-10-16 12:27:17,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:18,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:18,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034758957] [2020-10-16 12:27:18,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666996903] [2020-10-16 12:27:18,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:18,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:18,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:18,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:18,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:18,419 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:18,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:18,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:18,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [639084796] [2020-10-16 12:27:18,420 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:18,422 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:18,426 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:27:18,427 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:18,440 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:18,440 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:18,460 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:18,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:18,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:18,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:18,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:18,461 INFO L87 Difference]: Start difference. First operand 165 states and 416 transitions. Second operand 10 states. [2020-10-16 12:27:18,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:18,640 INFO L93 Difference]: Finished difference Result 222 states and 523 transitions. [2020-10-16 12:27:18,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:18,641 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:18,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:18,643 INFO L225 Difference]: With dead ends: 222 [2020-10-16 12:27:18,643 INFO L226 Difference]: Without dead ends: 220 [2020-10-16 12:27:18,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:27:18,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-16 12:27:18,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 162. [2020-10-16 12:27:18,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-16 12:27:18,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 407 transitions. [2020-10-16 12:27:18,650 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 407 transitions. Word has length 14 [2020-10-16 12:27:18,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:18,650 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 407 transitions. [2020-10-16 12:27:18,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:18,651 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 407 transitions. [2020-10-16 12:27:18,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:18,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:18,652 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:18,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,101 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:18,867 INFO L429 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:18,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:18,868 INFO L82 PathProgramCache]: Analyzing trace with hash 292197727, now seen corresponding path program 93 times [2020-10-16 12:27:18,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:18,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155461410] [2020-10-16 12:27:18,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:19,037 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:19,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155461410] [2020-10-16 12:27:19,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239678209] [2020-10-16 12:27:19,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:19,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:27:19,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:19,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:19,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:19,401 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:19,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:19,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:19,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1937340565] [2020-10-16 12:27:19,403 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:19,405 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:19,409 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:27:19,409 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:19,422 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:19,422 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:19,438 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:19,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:19,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:19,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:19,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:19,440 INFO L87 Difference]: Start difference. First operand 162 states and 407 transitions. Second operand 10 states. [2020-10-16 12:27:19,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:19,669 INFO L93 Difference]: Finished difference Result 219 states and 517 transitions. [2020-10-16 12:27:19,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:19,670 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:19,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:19,671 INFO L225 Difference]: With dead ends: 219 [2020-10-16 12:27:19,672 INFO L226 Difference]: Without dead ends: 217 [2020-10-16 12:27:19,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:19,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-16 12:27:19,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 164. [2020-10-16 12:27:19,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-16 12:27:19,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 413 transitions. [2020-10-16 12:27:19,678 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 413 transitions. Word has length 14 [2020-10-16 12:27:19,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:19,678 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 413 transitions. [2020-10-16 12:27:19,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:19,679 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 413 transitions. [2020-10-16 12:27:19,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:19,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:19,680 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:19,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-10-16 12:27:19,894 INFO L429 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:19,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:19,894 INFO L82 PathProgramCache]: Analyzing trace with hash 292198688, now seen corresponding path program 94 times [2020-10-16 12:27:19,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:19,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641575504] [2020-10-16 12:27:19,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:20,063 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:20,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641575504] [2020-10-16 12:27:20,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871337642] [2020-10-16 12:27:20,065 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:20,136 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:20,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:20,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:20,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:23,092 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:23,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:23,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:23,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2115070096] [2020-10-16 12:27:23,093 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:23,093 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:23,095 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:27:23,095 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:23,102 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:23,102 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:23,110 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:23,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:23,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:23,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:23,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=200, Unknown=1, NotChecked=0, Total=272 [2020-10-16 12:27:23,111 INFO L87 Difference]: Start difference. First operand 164 states and 413 transitions. Second operand 10 states. [2020-10-16 12:27:23,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:23,293 INFO L93 Difference]: Finished difference Result 220 states and 519 transitions. [2020-10-16 12:27:23,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:23,294 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:23,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:23,294 INFO L225 Difference]: With dead ends: 220 [2020-10-16 12:27:23,295 INFO L226 Difference]: Without dead ends: 218 [2020-10-16 12:27:23,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=127, Invalid=292, Unknown=1, NotChecked=0, Total=420 [2020-10-16 12:27:23,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-16 12:27:23,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 162. [2020-10-16 12:27:23,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-16 12:27:23,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 407 transitions. [2020-10-16 12:27:23,298 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 407 transitions. Word has length 14 [2020-10-16 12:27:23,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:23,299 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 407 transitions. [2020-10-16 12:27:23,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:23,299 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 407 transitions. [2020-10-16 12:27:23,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:23,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:23,299 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:23,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:23,500 INFO L429 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:23,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:23,501 INFO L82 PathProgramCache]: Analyzing trace with hash 292227518, now seen corresponding path program 95 times [2020-10-16 12:27:23,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:23,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040524534] [2020-10-16 12:27:23,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:23,640 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:23,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040524534] [2020-10-16 12:27:23,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100686988] [2020-10-16 12:27:23,640 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:23,703 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:27:23,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:23,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:23,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:24,442 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:24,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:24,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:24,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [676171985] [2020-10-16 12:27:24,443 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:24,444 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:24,445 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:27:24,445 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:24,457 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:24,458 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:24,467 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:24,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:24,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:24,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:24,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:24,468 INFO L87 Difference]: Start difference. First operand 162 states and 407 transitions. Second operand 10 states. [2020-10-16 12:27:24,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:24,633 INFO L93 Difference]: Finished difference Result 219 states and 517 transitions. [2020-10-16 12:27:24,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:24,633 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:24,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:24,634 INFO L225 Difference]: With dead ends: 219 [2020-10-16 12:27:24,634 INFO L226 Difference]: Without dead ends: 217 [2020-10-16 12:27:24,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:24,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-16 12:27:24,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 164. [2020-10-16 12:27:24,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-16 12:27:24,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 413 transitions. [2020-10-16 12:27:24,637 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 413 transitions. Word has length 14 [2020-10-16 12:27:24,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:24,637 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 413 transitions. [2020-10-16 12:27:24,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:24,638 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 413 transitions. [2020-10-16 12:27:24,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:24,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:24,638 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:24,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2020-10-16 12:27:24,839 INFO L429 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:24,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:24,840 INFO L82 PathProgramCache]: Analyzing trace with hash 292228479, now seen corresponding path program 96 times [2020-10-16 12:27:24,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:24,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277175812] [2020-10-16 12:27:24,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:24,960 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:24,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277175812] [2020-10-16 12:27:24,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581317415] [2020-10-16 12:27:24,961 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:25,002 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:27:25,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:25,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:25,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:25,177 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:25,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:25,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:25,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1691603874] [2020-10-16 12:27:25,178 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:25,179 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:25,181 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:27:25,181 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:25,188 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:25,188 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:25,197 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:25,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:25,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:25,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:25,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:25,198 INFO L87 Difference]: Start difference. First operand 164 states and 413 transitions. Second operand 10 states. [2020-10-16 12:27:25,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:25,355 INFO L93 Difference]: Finished difference Result 221 states and 521 transitions. [2020-10-16 12:27:25,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:25,356 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:25,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:25,356 INFO L225 Difference]: With dead ends: 221 [2020-10-16 12:27:25,357 INFO L226 Difference]: Without dead ends: 219 [2020-10-16 12:27:25,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:25,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-16 12:27:25,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 160. [2020-10-16 12:27:25,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-16 12:27:25,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 401 transitions. [2020-10-16 12:27:25,361 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 401 transitions. Word has length 14 [2020-10-16 12:27:25,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:25,361 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 401 transitions. [2020-10-16 12:27:25,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:25,361 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 401 transitions. [2020-10-16 12:27:25,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:25,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:25,362 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:25,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2020-10-16 12:27:25,570 INFO L429 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:25,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:25,570 INFO L82 PathProgramCache]: Analyzing trace with hash 319903357, now seen corresponding path program 97 times [2020-10-16 12:27:25,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:25,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77532876] [2020-10-16 12:27:25,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:25,670 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:25,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77532876] [2020-10-16 12:27:25,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656268634] [2020-10-16 12:27:25,671 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:25,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:25,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:25,887 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:25,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:25,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:25,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1197689333] [2020-10-16 12:27:25,888 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:25,890 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:25,892 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:27:25,893 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:25,895 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:25,895 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:25,912 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:25,912 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:25,947 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [54765#(and (<= (+ ~i~0 (* 4 ~j~0)) 14) (< ~i~0 377))] [2020-10-16 12:27:25,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:25,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:25,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:25,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:25,948 INFO L87 Difference]: Start difference. First operand 160 states and 401 transitions. Second operand 11 states. [2020-10-16 12:27:26,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:26,188 INFO L93 Difference]: Finished difference Result 236 states and 553 transitions. [2020-10-16 12:27:26,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:27:26,189 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:26,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:26,190 INFO L225 Difference]: With dead ends: 236 [2020-10-16 12:27:26,190 INFO L226 Difference]: Without dead ends: 234 [2020-10-16 12:27:26,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:27:26,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-16 12:27:26,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 167. [2020-10-16 12:27:26,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-16 12:27:26,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 424 transitions. [2020-10-16 12:27:26,194 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 424 transitions. Word has length 14 [2020-10-16 12:27:26,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:26,194 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 424 transitions. [2020-10-16 12:27:26,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:26,194 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 424 transitions. [2020-10-16 12:27:26,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:26,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:26,195 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:26,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,106 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:26,396 INFO L429 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:26,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:26,396 INFO L82 PathProgramCache]: Analyzing trace with hash 319904318, now seen corresponding path program 98 times [2020-10-16 12:27:26,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:26,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589219075] [2020-10-16 12:27:26,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:26,499 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:26,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589219075] [2020-10-16 12:27:26,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801087145] [2020-10-16 12:27:26,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:26,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:26,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:26,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:26,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:26,816 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:26,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:26,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:26,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1582554383] [2020-10-16 12:27:26,818 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:26,820 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:26,824 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:27:26,824 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:26,826 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:26,826 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:26,882 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:26,883 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:26,907 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [55404#(and (< ~i~0 377) (<= (+ (* 2 ~i~0) (* 5 ~j~0)) 19))] [2020-10-16 12:27:26,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:26,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:26,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:26,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:26,909 INFO L87 Difference]: Start difference. First operand 167 states and 424 transitions. Second operand 11 states. [2020-10-16 12:27:27,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:27,283 INFO L93 Difference]: Finished difference Result 237 states and 555 transitions. [2020-10-16 12:27:27,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:27:27,284 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:27,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:27,285 INFO L225 Difference]: With dead ends: 237 [2020-10-16 12:27:27,285 INFO L226 Difference]: Without dead ends: 235 [2020-10-16 12:27:27,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:27:27,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-16 12:27:27,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 164. [2020-10-16 12:27:27,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-16 12:27:27,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 415 transitions. [2020-10-16 12:27:27,302 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 415 transitions. Word has length 14 [2020-10-16 12:27:27,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:27,303 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 415 transitions. [2020-10-16 12:27:27,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:27,303 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 415 transitions. [2020-10-16 12:27:27,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:27,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:27,304 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:27,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:27,519 INFO L429 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:27,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:27,520 INFO L82 PathProgramCache]: Analyzing trace with hash 319933148, now seen corresponding path program 99 times [2020-10-16 12:27:27,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:27,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634573721] [2020-10-16 12:27:27,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:27,669 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:27,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634573721] [2020-10-16 12:27:27,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939675898] [2020-10-16 12:27:27,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:27,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:27:27,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:27,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:27,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:27,944 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:27,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:27,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:27,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [250375443] [2020-10-16 12:27:27,945 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:27,947 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:27,951 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:27:27,951 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:27,957 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:27,957 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:27,978 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:27,978 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:28,019 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [56038#(and (<= (+ (* 3 ~i~0) (* 5 ~j~0)) 21) (< ~i~0 377))] [2020-10-16 12:27:28,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:28,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:28,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:28,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:28,021 INFO L87 Difference]: Start difference. First operand 164 states and 415 transitions. Second operand 11 states. [2020-10-16 12:27:28,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:28,247 INFO L93 Difference]: Finished difference Result 234 states and 549 transitions. [2020-10-16 12:27:28,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:27:28,248 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:28,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:28,249 INFO L225 Difference]: With dead ends: 234 [2020-10-16 12:27:28,249 INFO L226 Difference]: Without dead ends: 232 [2020-10-16 12:27:28,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:27:28,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-16 12:27:28,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 166. [2020-10-16 12:27:28,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-16 12:27:28,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 421 transitions. [2020-10-16 12:27:28,253 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 421 transitions. Word has length 14 [2020-10-16 12:27:28,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:28,254 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 421 transitions. [2020-10-16 12:27:28,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:28,254 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 421 transitions. [2020-10-16 12:27:28,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:28,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:28,255 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:28,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2020-10-16 12:27:28,465 INFO L429 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:28,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:28,465 INFO L82 PathProgramCache]: Analyzing trace with hash 319934109, now seen corresponding path program 100 times [2020-10-16 12:27:28,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:28,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019573258] [2020-10-16 12:27:28,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:28,576 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:28,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019573258] [2020-10-16 12:27:28,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522541433] [2020-10-16 12:27:28,577 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:28,617 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:28,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:28,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:28,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:28,778 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:28,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:28,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:28,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [751902040] [2020-10-16 12:27:28,779 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:28,781 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:28,783 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:27:28,783 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:28,785 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:28,785 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:28,798 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:28,798 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:28,831 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [56673#(and (<= (+ (* 3 ~i~0) (* 4 ~j~0)) 18) (< ~i~0 377))] [2020-10-16 12:27:28,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:28,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:28,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:28,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:28,833 INFO L87 Difference]: Start difference. First operand 166 states and 421 transitions. Second operand 11 states. [2020-10-16 12:27:29,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:29,085 INFO L93 Difference]: Finished difference Result 236 states and 553 transitions. [2020-10-16 12:27:29,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:27:29,086 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:29,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:29,087 INFO L225 Difference]: With dead ends: 236 [2020-10-16 12:27:29,087 INFO L226 Difference]: Without dead ends: 234 [2020-10-16 12:27:29,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:27:29,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-16 12:27:29,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 163. [2020-10-16 12:27:29,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-16 12:27:29,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 412 transitions. [2020-10-16 12:27:29,091 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 412 transitions. Word has length 14 [2020-10-16 12:27:29,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:29,091 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 412 transitions. [2020-10-16 12:27:29,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:29,092 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 412 transitions. [2020-10-16 12:27:29,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:29,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:29,092 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:29,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:29,301 INFO L429 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:29,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:29,301 INFO L82 PathProgramCache]: Analyzing trace with hash 320826878, now seen corresponding path program 101 times [2020-10-16 12:27:29,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:29,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840648891] [2020-10-16 12:27:29,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:29,411 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:29,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840648891] [2020-10-16 12:27:29,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616451015] [2020-10-16 12:27:29,412 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:29,452 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:27:29,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:29,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:29,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:29,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:29,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:29,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:29,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2077205673] [2020-10-16 12:27:29,647 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:29,649 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:29,651 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:27:29,651 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:29,651 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:29,652 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:29,683 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:29,683 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:29,728 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:29,728 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:29,739 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [57304#(and (<= (+ ~i~0 (* 3 ~j~0)) 17) (< ~i~0 377)), 57305#(and (<= (+ (* 4 ~i~0) (* 3 ~j~0)) 17) (< ~i~0 377))] [2020-10-16 12:27:29,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:27:29,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:29,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:27:29,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:27:29,740 INFO L87 Difference]: Start difference. First operand 163 states and 412 transitions. Second operand 12 states. [2020-10-16 12:27:30,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:30,079 INFO L93 Difference]: Finished difference Result 243 states and 566 transitions. [2020-10-16 12:27:30,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 12:27:30,080 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:27:30,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:30,081 INFO L225 Difference]: With dead ends: 243 [2020-10-16 12:27:30,081 INFO L226 Difference]: Without dead ends: 241 [2020-10-16 12:27:30,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=217, Invalid=595, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:27:30,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-16 12:27:30,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 166. [2020-10-16 12:27:30,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-16 12:27:30,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 423 transitions. [2020-10-16 12:27:30,085 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 423 transitions. Word has length 14 [2020-10-16 12:27:30,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:30,085 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 423 transitions. [2020-10-16 12:27:30,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:27:30,085 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 423 transitions. [2020-10-16 12:27:30,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:30,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:30,086 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:30,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2020-10-16 12:27:30,287 INFO L429 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:30,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:30,287 INFO L82 PathProgramCache]: Analyzing trace with hash 320827839, now seen corresponding path program 102 times [2020-10-16 12:27:30,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:30,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214471161] [2020-10-16 12:27:30,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:30,395 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:30,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214471161] [2020-10-16 12:27:30,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818312926] [2020-10-16 12:27:30,396 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:30,437 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:27:30,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:30,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:30,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:30,649 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:30,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:30,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:30,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2140559650] [2020-10-16 12:27:30,650 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:30,651 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:30,654 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:27:30,654 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:30,654 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:30,654 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:30,686 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:30,686 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:30,730 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:30,731 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:30,738 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [57957#(and (<= (+ (* 2 ~i~0) (* 3 ~j~0)) 19) (< ~i~0 377)), 57958#(and (< ~i~0 377) (<= (+ (* 5 ~i~0) (* 3 ~j~0)) 19))] [2020-10-16 12:27:30,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:27:30,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:30,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:27:30,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:27:30,739 INFO L87 Difference]: Start difference. First operand 166 states and 423 transitions. Second operand 12 states. [2020-10-16 12:27:31,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:31,073 INFO L93 Difference]: Finished difference Result 247 states and 574 transitions. [2020-10-16 12:27:31,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:27:31,074 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:27:31,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:31,075 INFO L225 Difference]: With dead ends: 247 [2020-10-16 12:27:31,075 INFO L226 Difference]: Without dead ends: 245 [2020-10-16 12:27:31,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:27:31,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-16 12:27:31,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 164. [2020-10-16 12:27:31,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-16 12:27:31,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 417 transitions. [2020-10-16 12:27:31,080 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 417 transitions. Word has length 14 [2020-10-16 12:27:31,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:31,080 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 417 transitions. [2020-10-16 12:27:31,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:27:31,080 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 417 transitions. [2020-10-16 12:27:31,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:31,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:31,081 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:31,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2020-10-16 12:27:31,289 INFO L429 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:31,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:31,289 INFO L82 PathProgramCache]: Analyzing trace with hash 320856669, now seen corresponding path program 103 times [2020-10-16 12:27:31,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:31,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073548705] [2020-10-16 12:27:31,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:31,400 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:31,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073548705] [2020-10-16 12:27:31,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949998229] [2020-10-16 12:27:31,400 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:31,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:31,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:31,611 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:31,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:31,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:31,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1143959798] [2020-10-16 12:27:31,613 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:31,613 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:31,615 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-10-16 12:27:31,616 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:31,625 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:31,625 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:31,633 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:31,634 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:31,668 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:31,669 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:31,706 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:31,707 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:31,749 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [58608#(and (< ~i~0 377) (<= (+ ~i~0 (* 2 ~j~0)) 16)), 58609#(and (< ~i~0 377) (<= (+ (* 3 ~i~0) (* 2 ~j~0)) 16)), 58610#(and (<= (+ (* 5 ~i~0) (* 2 ~j~0)) 16) (< ~i~0 377))] [2020-10-16 12:27:31,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:27:31,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:31,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:27:31,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:27:31,750 INFO L87 Difference]: Start difference. First operand 164 states and 417 transitions. Second operand 13 states. [2020-10-16 12:27:32,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:32,149 INFO L93 Difference]: Finished difference Result 253 states and 590 transitions. [2020-10-16 12:27:32,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:27:32,150 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2020-10-16 12:27:32,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:32,151 INFO L225 Difference]: With dead ends: 253 [2020-10-16 12:27:32,151 INFO L226 Difference]: Without dead ends: 251 [2020-10-16 12:27:32,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=246, Invalid=624, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:27:32,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-16 12:27:32,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 169. [2020-10-16 12:27:32,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-16 12:27:32,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 436 transitions. [2020-10-16 12:27:32,156 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 436 transitions. Word has length 14 [2020-10-16 12:27:32,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:32,156 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 436 transitions. [2020-10-16 12:27:32,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:27:32,156 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 436 transitions. [2020-10-16 12:27:32,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:32,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:32,157 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:32,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2020-10-16 12:27:32,367 INFO L429 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:32,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:32,367 INFO L82 PathProgramCache]: Analyzing trace with hash 320857630, now seen corresponding path program 104 times [2020-10-16 12:27:32,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:32,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490419413] [2020-10-16 12:27:32,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:32,462 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:32,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490419413] [2020-10-16 12:27:32,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373854889] [2020-10-16 12:27:32,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:32,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:32,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:32,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:32,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:32,745 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:32,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:32,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:32,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1057964632] [2020-10-16 12:27:32,747 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:32,749 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:32,752 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-10-16 12:27:32,753 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:32,758 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:32,758 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:32,774 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:32,775 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:32,812 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:32,813 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:32,860 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:32,860 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:32,903 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:32,904 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:32,950 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:32,950 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:33,004 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [59278#(and (<= ~j~0 11) (< ~i~0 377)), 59279#(and (<= (+ ~i~0 ~j~0) 11) (< ~i~0 377)), 59280#(and (<= (+ (* 2 ~i~0) ~j~0) 11) (< ~i~0 377)), 59281#(and (<= (+ (* 3 ~i~0) ~j~0) 11) (< ~i~0 377)), 59282#(and (<= (+ (* 4 ~i~0) ~j~0) 11) (< ~i~0 377))] [2020-10-16 12:27:33,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 12:27:33,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:33,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 12:27:33,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:27:33,006 INFO L87 Difference]: Start difference. First operand 169 states and 436 transitions. Second operand 15 states. [2020-10-16 12:27:33,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:33,460 INFO L93 Difference]: Finished difference Result 258 states and 616 transitions. [2020-10-16 12:27:33,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:33,461 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 14 [2020-10-16 12:27:33,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:33,462 INFO L225 Difference]: With dead ends: 258 [2020-10-16 12:27:33,462 INFO L226 Difference]: Without dead ends: 253 [2020-10-16 12:27:33,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=294, Invalid=698, Unknown=0, NotChecked=0, Total=992 [2020-10-16 12:27:33,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-16 12:27:33,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 164. [2020-10-16 12:27:33,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-16 12:27:33,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 421 transitions. [2020-10-16 12:27:33,466 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 421 transitions. Word has length 14 [2020-10-16 12:27:33,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:33,467 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 421 transitions. [2020-10-16 12:27:33,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 12:27:33,467 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 421 transitions. [2020-10-16 12:27:33,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:33,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:33,467 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:33,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,113 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:33,678 INFO L429 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:33,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:33,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1428494772, now seen corresponding path program 105 times [2020-10-16 12:27:33,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:33,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856883828] [2020-10-16 12:27:33,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:33,788 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:33,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856883828] [2020-10-16 12:27:33,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805676971] [2020-10-16 12:27:33,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:33,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:27:33,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:33,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:33,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:34,584 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:34,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:34,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:34,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [966229192] [2020-10-16 12:27:34,586 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:34,586 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:34,589 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-10-16 12:27:34,589 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:34,603 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:34,603 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:34,613 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:34,614 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:34,649 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:34,649 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:34,691 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [59945#(and (<= (+ ~i~0 (* 2 ~j~0)) 17) (< ~i~0 377)), 59946#(and (<= (+ (* 3 ~i~0) (* 2 ~j~0)) 17) (< ~i~0 377))] [2020-10-16 12:27:34,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:27:34,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:34,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:27:34,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:27:34,693 INFO L87 Difference]: Start difference. First operand 164 states and 421 transitions. Second operand 12 states. [2020-10-16 12:27:34,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:34,994 INFO L93 Difference]: Finished difference Result 248 states and 584 transitions. [2020-10-16 12:27:34,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:34,995 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:27:34,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:34,996 INFO L225 Difference]: With dead ends: 248 [2020-10-16 12:27:34,996 INFO L226 Difference]: Without dead ends: 246 [2020-10-16 12:27:34,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=201, Invalid=501, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:27:34,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-16 12:27:34,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 169. [2020-10-16 12:27:34,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-16 12:27:34,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 438 transitions. [2020-10-16 12:27:35,000 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 438 transitions. Word has length 14 [2020-10-16 12:27:35,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:35,000 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 438 transitions. [2020-10-16 12:27:35,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:27:35,000 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 438 transitions. [2020-10-16 12:27:35,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:35,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:35,000 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:35,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2020-10-16 12:27:35,201 INFO L429 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:35,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:35,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1428493811, now seen corresponding path program 106 times [2020-10-16 12:27:35,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:35,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706227118] [2020-10-16 12:27:35,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:35,305 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:35,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706227118] [2020-10-16 12:27:35,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61338601] [2020-10-16 12:27:35,306 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:35,345 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:35,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:35,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:35,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:35,526 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:35,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:35,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:35,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [579925673] [2020-10-16 12:27:35,527 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:35,528 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:35,531 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 42 transitions. [2020-10-16 12:27:35,531 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:35,535 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:35,536 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:35,566 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:35,567 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:35,606 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:35,607 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:35,644 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:35,645 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:35,688 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:35,688 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:35,703 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [60608#(and (<= (+ (* 3 ~i~0) ~j~0) 13) (< ~i~0 377)), 60605#(and (< ~i~0 377) (<= ~j~0 13)), 60606#(and (<= (+ ~i~0 ~j~0) 13) (< ~i~0 377)), 60607#(and (<= (+ (* 2 ~i~0) ~j~0) 13) (< ~i~0 377))] [2020-10-16 12:27:35,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 12:27:35,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:35,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 12:27:35,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:35,704 INFO L87 Difference]: Start difference. First operand 169 states and 438 transitions. Second operand 14 states. [2020-10-16 12:27:36,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:36,068 INFO L93 Difference]: Finished difference Result 257 states and 612 transitions. [2020-10-16 12:27:36,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:36,068 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2020-10-16 12:27:36,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:36,069 INFO L225 Difference]: With dead ends: 257 [2020-10-16 12:27:36,069 INFO L226 Difference]: Without dead ends: 252 [2020-10-16 12:27:36,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=267, Invalid=603, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:27:36,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-16 12:27:36,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 163. [2020-10-16 12:27:36,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-16 12:27:36,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 416 transitions. [2020-10-16 12:27:36,073 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 416 transitions. Word has length 14 [2020-10-16 12:27:36,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:36,074 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 416 transitions. [2020-10-16 12:27:36,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 12:27:36,074 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 416 transitions. [2020-10-16 12:27:36,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:36,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:36,074 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:36,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:36,275 INFO L429 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:36,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:36,276 INFO L82 PathProgramCache]: Analyzing trace with hash -792218594, now seen corresponding path program 107 times [2020-10-16 12:27:36,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:36,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417132411] [2020-10-16 12:27:36,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:36,407 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:36,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417132411] [2020-10-16 12:27:36,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187312899] [2020-10-16 12:27:36,408 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:36,449 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:27:36,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:36,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:36,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:36,610 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:36,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:36,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:36,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1991188034] [2020-10-16 12:27:36,611 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:36,612 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:36,615 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 44 transitions. [2020-10-16 12:27:36,615 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:36,621 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:36,621 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:36,645 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:36,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:36,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:36,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:36,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:36,647 INFO L87 Difference]: Start difference. First operand 163 states and 416 transitions. Second operand 10 states. [2020-10-16 12:27:36,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:36,774 INFO L93 Difference]: Finished difference Result 207 states and 502 transitions. [2020-10-16 12:27:36,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:27:36,775 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:36,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:36,776 INFO L225 Difference]: With dead ends: 207 [2020-10-16 12:27:36,776 INFO L226 Difference]: Without dead ends: 205 [2020-10-16 12:27:36,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:27:36,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-16 12:27:36,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 165. [2020-10-16 12:27:36,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-16 12:27:36,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 422 transitions. [2020-10-16 12:27:36,781 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 422 transitions. Word has length 14 [2020-10-16 12:27:36,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:36,781 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 422 transitions. [2020-10-16 12:27:36,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:36,781 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 422 transitions. [2020-10-16 12:27:36,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:36,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:36,781 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:36,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,116 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:36,982 INFO L429 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:36,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:36,983 INFO L82 PathProgramCache]: Analyzing trace with hash -792217633, now seen corresponding path program 108 times [2020-10-16 12:27:36,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:36,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647756652] [2020-10-16 12:27:36,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:37,111 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:37,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647756652] [2020-10-16 12:27:37,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130996114] [2020-10-16 12:27:37,112 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:37,151 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:27:37,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:37,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:37,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:37,312 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:37,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:37,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:37,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [978224224] [2020-10-16 12:27:37,313 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:37,314 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:37,316 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 42 transitions. [2020-10-16 12:27:37,317 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:37,335 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:37,336 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:37,372 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:37,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:37,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:37,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:37,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:37,373 INFO L87 Difference]: Start difference. First operand 165 states and 422 transitions. Second operand 10 states. [2020-10-16 12:27:37,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:37,524 INFO L93 Difference]: Finished difference Result 212 states and 512 transitions. [2020-10-16 12:27:37,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:27:37,525 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:37,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:37,526 INFO L225 Difference]: With dead ends: 212 [2020-10-16 12:27:37,526 INFO L226 Difference]: Without dead ends: 210 [2020-10-16 12:27:37,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:37,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-16 12:27:37,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 161. [2020-10-16 12:27:37,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-16 12:27:37,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 410 transitions. [2020-10-16 12:27:37,530 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 410 transitions. Word has length 14 [2020-10-16 12:27:37,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:37,531 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 410 transitions. [2020-10-16 12:27:37,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:37,531 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 410 transitions. [2020-10-16 12:27:37,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:37,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:37,531 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:37,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:37,743 INFO L429 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:37,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:37,743 INFO L82 PathProgramCache]: Analyzing trace with hash -771662804, now seen corresponding path program 109 times [2020-10-16 12:27:37,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:37,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857124610] [2020-10-16 12:27:37,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:37,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:37,862 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:37,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857124610] [2020-10-16 12:27:37,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842608493] [2020-10-16 12:27:37,863 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:37,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:37,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:37,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:38,060 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:38,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:38,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:38,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [69616299] [2020-10-16 12:27:38,061 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:38,062 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:38,066 INFO L258 McrAutomatonBuilder]: Finished intersection with 32 states and 48 transitions. [2020-10-16 12:27:38,066 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:38,071 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:38,072 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:38,101 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:38,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:38,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:38,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:38,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:38,102 INFO L87 Difference]: Start difference. First operand 161 states and 410 transitions. Second operand 10 states. [2020-10-16 12:27:38,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:38,248 INFO L93 Difference]: Finished difference Result 205 states and 495 transitions. [2020-10-16 12:27:38,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 12:27:38,249 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:38,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:38,250 INFO L225 Difference]: With dead ends: 205 [2020-10-16 12:27:38,250 INFO L226 Difference]: Without dead ends: 203 [2020-10-16 12:27:38,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:38,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-16 12:27:38,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 163. [2020-10-16 12:27:38,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-16 12:27:38,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 416 transitions. [2020-10-16 12:27:38,254 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 416 transitions. Word has length 14 [2020-10-16 12:27:38,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:38,254 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 416 transitions. [2020-10-16 12:27:38,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:38,254 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 416 transitions. [2020-10-16 12:27:38,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:38,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:38,254 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:38,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,118 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:38,455 INFO L429 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:38,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:38,456 INFO L82 PathProgramCache]: Analyzing trace with hash -771661843, now seen corresponding path program 110 times [2020-10-16 12:27:38,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:38,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82187413] [2020-10-16 12:27:38,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:38,555 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:38,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82187413] [2020-10-16 12:27:38,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744935601] [2020-10-16 12:27:38,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:38,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:38,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:38,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:38,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:38,761 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:38,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:38,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:38,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2091544276] [2020-10-16 12:27:38,762 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:38,762 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:38,765 INFO L258 McrAutomatonBuilder]: Finished intersection with 33 states and 50 transitions. [2020-10-16 12:27:38,765 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:38,768 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:38,768 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:38,802 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:38,802 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:38,853 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:38,853 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:38,904 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [63058#(and (<= ~j~0 11) (< ~i~0 377)), 63059#(and (<= (+ ~i~0 ~j~0) 11) (< ~i~0 377))] [2020-10-16 12:27:38,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:27:38,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:38,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:27:38,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:27:38,905 INFO L87 Difference]: Start difference. First operand 163 states and 416 transitions. Second operand 12 states. [2020-10-16 12:27:39,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:39,183 INFO L93 Difference]: Finished difference Result 247 states and 595 transitions. [2020-10-16 12:27:39,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:39,184 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:27:39,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:39,185 INFO L225 Difference]: With dead ends: 247 [2020-10-16 12:27:39,185 INFO L226 Difference]: Without dead ends: 242 [2020-10-16 12:27:39,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=440, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:27:39,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-16 12:27:39,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 162. [2020-10-16 12:27:39,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-16 12:27:39,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 404 transitions. [2020-10-16 12:27:39,189 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 404 transitions. Word has length 14 [2020-10-16 12:27:39,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:39,189 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 404 transitions. [2020-10-16 12:27:39,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:27:39,189 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 404 transitions. [2020-10-16 12:27:39,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:39,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:39,189 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:39,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2020-10-16 12:27:39,390 INFO L429 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:39,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:39,391 INFO L82 PathProgramCache]: Analyzing trace with hash -770076193, now seen corresponding path program 111 times [2020-10-16 12:27:39,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:39,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297171469] [2020-10-16 12:27:39,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:39,489 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:39,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297171469] [2020-10-16 12:27:39,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232811435] [2020-10-16 12:27:39,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:39,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:27:39,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:39,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-16 12:27:39,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:39,624 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:39,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:39,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-10-16 12:27:39,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [902649788] [2020-10-16 12:27:39,625 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:39,626 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:39,628 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 40 transitions. [2020-10-16 12:27:39,629 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:39,640 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:39,641 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:39,672 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [63698#(and (<= ~j~0 14) (< ~i~0 377))] [2020-10-16 12:27:39,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:39,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:39,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:39,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:27:39,673 INFO L87 Difference]: Start difference. First operand 162 states and 404 transitions. Second operand 11 states. [2020-10-16 12:27:40,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:40,001 INFO L93 Difference]: Finished difference Result 250 states and 602 transitions. [2020-10-16 12:27:40,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:40,002 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:40,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:40,002 INFO L225 Difference]: With dead ends: 250 [2020-10-16 12:27:40,002 INFO L226 Difference]: Without dead ends: 245 [2020-10-16 12:27:40,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:27:40,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-16 12:27:40,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 161. [2020-10-16 12:27:40,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-16 12:27:40,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 399 transitions. [2020-10-16 12:27:40,006 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 399 transitions. Word has length 14 [2020-10-16 12:27:40,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:40,006 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 399 transitions. [2020-10-16 12:27:40,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:40,006 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 399 transitions. [2020-10-16 12:27:40,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:40,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:40,006 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:40,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2020-10-16 12:27:40,207 INFO L429 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:40,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:40,208 INFO L82 PathProgramCache]: Analyzing trace with hash -743033653, now seen corresponding path program 112 times [2020-10-16 12:27:40,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:40,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533403092] [2020-10-16 12:27:40,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:40,301 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:40,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533403092] [2020-10-16 12:27:40,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58239540] [2020-10-16 12:27:40,302 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:40,346 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:40,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:40,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:40,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:40,588 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:40,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:40,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:40,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [889241170] [2020-10-16 12:27:40,589 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:40,590 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:40,591 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:27:40,592 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:40,611 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:40,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:40,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:40,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:40,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:40,612 INFO L87 Difference]: Start difference. First operand 161 states and 399 transitions. Second operand 10 states. [2020-10-16 12:27:40,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:40,951 INFO L93 Difference]: Finished difference Result 244 states and 570 transitions. [2020-10-16 12:27:40,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:40,952 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:40,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:40,952 INFO L225 Difference]: With dead ends: 244 [2020-10-16 12:27:40,952 INFO L226 Difference]: Without dead ends: 242 [2020-10-16 12:27:40,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=184, Invalid=466, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:27:40,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-16 12:27:40,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 164. [2020-10-16 12:27:40,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-16 12:27:40,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 412 transitions. [2020-10-16 12:27:40,956 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 412 transitions. Word has length 14 [2020-10-16 12:27:40,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:40,956 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 412 transitions. [2020-10-16 12:27:40,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:40,956 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 412 transitions. [2020-10-16 12:27:40,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:40,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:40,957 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:41,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-10-16 12:27:41,159 INFO L429 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:41,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:41,159 INFO L82 PathProgramCache]: Analyzing trace with hash -743032692, now seen corresponding path program 113 times [2020-10-16 12:27:41,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:41,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944260541] [2020-10-16 12:27:41,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:41,256 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:41,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944260541] [2020-10-16 12:27:41,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814611952] [2020-10-16 12:27:41,257 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:41,296 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:41,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:41,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:41,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:42,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:42,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:42,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:42,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1131400418] [2020-10-16 12:27:42,029 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:42,030 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:42,032 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 36 transitions. [2020-10-16 12:27:42,032 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:42,049 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:42,049 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:42,081 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:42,082 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:42,121 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [64992#(and (<= (+ ~i~0 ~j~0) 18) (< ~i~0 377)), 64991#(and (< ~i~0 377) (<= ~j~0 18))] [2020-10-16 12:27:42,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:27:42,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:42,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:27:42,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:27:42,122 INFO L87 Difference]: Start difference. First operand 164 states and 412 transitions. Second operand 12 states. [2020-10-16 12:27:42,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:42,523 INFO L93 Difference]: Finished difference Result 246 states and 592 transitions. [2020-10-16 12:27:42,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:42,524 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:27:42,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:42,524 INFO L225 Difference]: With dead ends: 246 [2020-10-16 12:27:42,525 INFO L226 Difference]: Without dead ends: 241 [2020-10-16 12:27:42,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=251, Invalid=561, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:27:42,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-16 12:27:42,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 162. [2020-10-16 12:27:42,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-16 12:27:42,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 404 transitions. [2020-10-16 12:27:42,529 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 404 transitions. Word has length 14 [2020-10-16 12:27:42,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:42,529 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 404 transitions. [2020-10-16 12:27:42,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:27:42,529 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 404 transitions. [2020-10-16 12:27:42,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:42,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:42,530 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:42,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-10-16 12:27:42,740 INFO L429 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:42,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:42,740 INFO L82 PathProgramCache]: Analyzing trace with hash -742370563, now seen corresponding path program 114 times [2020-10-16 12:27:42,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:42,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144769500] [2020-10-16 12:27:42,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:42,840 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:42,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144769500] [2020-10-16 12:27:42,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115352222] [2020-10-16 12:27:42,840 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:42,882 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:27:42,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:42,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:42,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:43,163 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:43,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:43,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:43,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1894330293] [2020-10-16 12:27:43,165 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:43,167 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:43,171 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-10-16 12:27:43,171 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:43,175 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:43,175 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:43,231 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [65639#(and (<= ~j~0 15) (< ~i~0 377))] [2020-10-16 12:27:43,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:43,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:43,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:43,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:43,232 INFO L87 Difference]: Start difference. First operand 162 states and 404 transitions. Second operand 11 states. [2020-10-16 12:27:43,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:43,651 INFO L93 Difference]: Finished difference Result 249 states and 600 transitions. [2020-10-16 12:27:43,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:43,651 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:43,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:43,652 INFO L225 Difference]: With dead ends: 249 [2020-10-16 12:27:43,652 INFO L226 Difference]: Without dead ends: 244 [2020-10-16 12:27:43,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=242, Invalid=514, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:27:43,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-16 12:27:43,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 162. [2020-10-16 12:27:43,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-16 12:27:43,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 404 transitions. [2020-10-16 12:27:43,655 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 404 transitions. Word has length 14 [2020-10-16 12:27:43,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:43,655 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 404 transitions. [2020-10-16 12:27:43,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:43,655 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 404 transitions. [2020-10-16 12:27:43,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:43,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:43,656 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:43,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:43,859 INFO L429 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:43,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:43,860 INFO L82 PathProgramCache]: Analyzing trace with hash -741447042, now seen corresponding path program 115 times [2020-10-16 12:27:43,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:43,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33507613] [2020-10-16 12:27:43,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:43,965 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:43,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33507613] [2020-10-16 12:27:43,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902231490] [2020-10-16 12:27:43,966 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:44,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:44,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:44,287 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:44,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:44,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:44,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1196827075] [2020-10-16 12:27:44,288 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:44,291 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:44,295 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-10-16 12:27:44,296 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:44,325 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:44,325 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:44,385 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [66289#(and (<= ~j~0 17) (< ~i~0 377))] [2020-10-16 12:27:44,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:44,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:44,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:44,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:44,387 INFO L87 Difference]: Start difference. First operand 162 states and 404 transitions. Second operand 11 states. [2020-10-16 12:27:45,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:45,011 INFO L93 Difference]: Finished difference Result 241 states and 580 transitions. [2020-10-16 12:27:45,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:45,013 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:45,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:45,015 INFO L225 Difference]: With dead ends: 241 [2020-10-16 12:27:45,015 INFO L226 Difference]: Without dead ends: 236 [2020-10-16 12:27:45,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=237, Invalid=519, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:27:45,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-16 12:27:45,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 161. [2020-10-16 12:27:45,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-16 12:27:45,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 399 transitions. [2020-10-16 12:27:45,025 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 399 transitions. Word has length 14 [2020-10-16 12:27:45,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:45,026 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 399 transitions. [2020-10-16 12:27:45,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:45,026 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 399 transitions. [2020-10-16 12:27:45,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:45,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:45,027 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:45,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2020-10-16 12:27:45,229 INFO L429 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:45,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:45,229 INFO L82 PathProgramCache]: Analyzing trace with hash 95285087, now seen corresponding path program 116 times [2020-10-16 12:27:45,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:45,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594965668] [2020-10-16 12:27:45,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:45,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:45,322 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:45,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594965668] [2020-10-16 12:27:45,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565985112] [2020-10-16 12:27:45,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:45,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:45,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:45,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:45,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:45,539 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:45,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:45,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:45,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [89586438] [2020-10-16 12:27:45,540 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:45,541 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:45,543 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-10-16 12:27:45,543 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:45,552 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:45,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:45,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:45,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:45,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:45,553 INFO L87 Difference]: Start difference. First operand 161 states and 399 transitions. Second operand 10 states. [2020-10-16 12:27:45,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:45,934 INFO L93 Difference]: Finished difference Result 238 states and 555 transitions. [2020-10-16 12:27:45,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:45,934 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:45,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:45,935 INFO L225 Difference]: With dead ends: 238 [2020-10-16 12:27:45,935 INFO L226 Difference]: Without dead ends: 236 [2020-10-16 12:27:45,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=185, Invalid=517, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:27:45,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-16 12:27:45,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 164. [2020-10-16 12:27:45,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-16 12:27:45,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 410 transitions. [2020-10-16 12:27:45,940 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 410 transitions. Word has length 14 [2020-10-16 12:27:45,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:45,941 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 410 transitions. [2020-10-16 12:27:45,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:45,941 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 410 transitions. [2020-10-16 12:27:45,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:45,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:45,941 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:46,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2020-10-16 12:27:46,152 INFO L429 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:46,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:46,152 INFO L82 PathProgramCache]: Analyzing trace with hash 95286048, now seen corresponding path program 117 times [2020-10-16 12:27:46,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:46,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737191438] [2020-10-16 12:27:46,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:46,251 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:46,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737191438] [2020-10-16 12:27:46,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736988747] [2020-10-16 12:27:46,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:46,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:27:46,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:46,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:46,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:46,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:46,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:46,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:46,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1042969520] [2020-10-16 12:27:46,479 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:46,480 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:46,482 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-10-16 12:27:46,482 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:46,490 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:46,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:46,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:46,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:46,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:46,491 INFO L87 Difference]: Start difference. First operand 164 states and 410 transitions. Second operand 10 states. [2020-10-16 12:27:46,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:46,857 INFO L93 Difference]: Finished difference Result 240 states and 559 transitions. [2020-10-16 12:27:46,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:46,858 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:46,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:46,858 INFO L225 Difference]: With dead ends: 240 [2020-10-16 12:27:46,859 INFO L226 Difference]: Without dead ends: 238 [2020-10-16 12:27:46,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:27:46,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-16 12:27:46,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 163. [2020-10-16 12:27:46,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-16 12:27:46,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 406 transitions. [2020-10-16 12:27:46,863 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 406 transitions. Word has length 14 [2020-10-16 12:27:46,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:46,863 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 406 transitions. [2020-10-16 12:27:46,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:46,864 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 406 transitions. [2020-10-16 12:27:46,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:46,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:46,864 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:47,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2020-10-16 12:27:47,074 INFO L429 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:47,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:47,074 INFO L82 PathProgramCache]: Analyzing trace with hash 95314878, now seen corresponding path program 118 times [2020-10-16 12:27:47,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:47,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242418211] [2020-10-16 12:27:47,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:47,177 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:47,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242418211] [2020-10-16 12:27:47,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096054136] [2020-10-16 12:27:47,179 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:47,255 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:47,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:47,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:47,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:47,426 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:47,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:47,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:47,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1616084668] [2020-10-16 12:27:47,427 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:47,428 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:47,431 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-10-16 12:27:47,431 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:47,442 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:47,443 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:47,474 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [68211#(and (<= (+ ~i~0 (* 2 ~j~0)) 21) (< ~i~0 377))] [2020-10-16 12:27:47,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:47,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:47,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:47,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:47,475 INFO L87 Difference]: Start difference. First operand 163 states and 406 transitions. Second operand 11 states. [2020-10-16 12:27:47,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:47,979 INFO L93 Difference]: Finished difference Result 247 states and 579 transitions. [2020-10-16 12:27:47,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-16 12:27:47,980 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:47,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:47,980 INFO L225 Difference]: With dead ends: 247 [2020-10-16 12:27:47,980 INFO L226 Difference]: Without dead ends: 245 [2020-10-16 12:27:47,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=220, Invalid=650, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:27:47,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-16 12:27:47,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 165. [2020-10-16 12:27:47,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-16 12:27:47,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 414 transitions. [2020-10-16 12:27:47,985 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 414 transitions. Word has length 14 [2020-10-16 12:27:47,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:47,985 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 414 transitions. [2020-10-16 12:27:47,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:47,985 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 414 transitions. [2020-10-16 12:27:47,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:47,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:47,986 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:48,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,127 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:48,188 INFO L429 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:48,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:48,188 INFO L82 PathProgramCache]: Analyzing trace with hash 115840877, now seen corresponding path program 119 times [2020-10-16 12:27:48,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:48,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048282618] [2020-10-16 12:27:48,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:48,286 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:48,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048282618] [2020-10-16 12:27:48,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893349818] [2020-10-16 12:27:48,286 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:48,327 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:27:48,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:48,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:48,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:48,492 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:48,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:48,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:48,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [779431679] [2020-10-16 12:27:48,494 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:48,494 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:48,496 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-10-16 12:27:48,496 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:48,507 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:48,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:48,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:48,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:48,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:48,508 INFO L87 Difference]: Start difference. First operand 165 states and 414 transitions. Second operand 10 states. [2020-10-16 12:27:48,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:48,924 INFO L93 Difference]: Finished difference Result 240 states and 567 transitions. [2020-10-16 12:27:48,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:27:48,924 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:48,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:48,925 INFO L225 Difference]: With dead ends: 240 [2020-10-16 12:27:48,925 INFO L226 Difference]: Without dead ends: 238 [2020-10-16 12:27:48,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:27:48,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-16 12:27:48,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 165. [2020-10-16 12:27:48,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-16 12:27:48,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 414 transitions. [2020-10-16 12:27:48,929 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 414 transitions. Word has length 14 [2020-10-16 12:27:48,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:48,929 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 414 transitions. [2020-10-16 12:27:48,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:48,929 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 414 transitions. [2020-10-16 12:27:48,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:48,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:48,929 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:49,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,128 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:49,131 INFO L429 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:49,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:49,131 INFO L82 PathProgramCache]: Analyzing trace with hash 115841838, now seen corresponding path program 120 times [2020-10-16 12:27:49,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:49,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320990735] [2020-10-16 12:27:49,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:49,230 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:49,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320990735] [2020-10-16 12:27:49,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138756167] [2020-10-16 12:27:49,231 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:49,274 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 12:27:49,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:49,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:49,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:49,459 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:49,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:49,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:49,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [931409633] [2020-10-16 12:27:49,460 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:49,461 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:49,465 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:27:49,465 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:49,475 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:49,475 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:49,514 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:49,514 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:49,555 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [69517#(and (< ~i~0 377) (<= ~j~0 19)), 69518#(and (< ~i~0 377) (<= (+ ~i~0 ~j~0) 19))] [2020-10-16 12:27:49,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:27:49,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:49,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:27:49,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:27:49,556 INFO L87 Difference]: Start difference. First operand 165 states and 414 transitions. Second operand 12 states. [2020-10-16 12:27:50,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:50,169 INFO L93 Difference]: Finished difference Result 243 states and 588 transitions. [2020-10-16 12:27:50,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:50,170 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:27:50,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:50,172 INFO L225 Difference]: With dead ends: 243 [2020-10-16 12:27:50,172 INFO L226 Difference]: Without dead ends: 238 [2020-10-16 12:27:50,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:27:50,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-16 12:27:50,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 165. [2020-10-16 12:27:50,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-16 12:27:50,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 414 transitions. [2020-10-16 12:27:50,179 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 414 transitions. Word has length 14 [2020-10-16 12:27:50,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:50,179 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 414 transitions. [2020-10-16 12:27:50,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:27:50,180 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 414 transitions. [2020-10-16 12:27:50,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:50,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:50,180 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:50,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,129 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:50,395 INFO L429 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:50,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:50,396 INFO L82 PathProgramCache]: Analyzing trace with hash 116503967, now seen corresponding path program 121 times [2020-10-16 12:27:50,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:50,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387290162] [2020-10-16 12:27:50,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:50,493 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:50,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387290162] [2020-10-16 12:27:50,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581892005] [2020-10-16 12:27:50,493 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:50,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:50,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:50,705 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:50,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:50,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:50,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1142561305] [2020-10-16 12:27:50,706 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:50,707 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:50,709 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-10-16 12:27:50,709 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:50,711 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:50,711 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:50,749 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [70170#(and (<= ~j~0 14) (< ~i~0 377))] [2020-10-16 12:27:50,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:50,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:50,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:50,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:50,750 INFO L87 Difference]: Start difference. First operand 165 states and 414 transitions. Second operand 11 states. [2020-10-16 12:27:51,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:51,231 INFO L93 Difference]: Finished difference Result 241 states and 584 transitions. [2020-10-16 12:27:51,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:51,232 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:51,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:51,233 INFO L225 Difference]: With dead ends: 241 [2020-10-16 12:27:51,233 INFO L226 Difference]: Without dead ends: 236 [2020-10-16 12:27:51,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=247, Invalid=565, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:27:51,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-16 12:27:51,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 165. [2020-10-16 12:27:51,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-16 12:27:51,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 414 transitions. [2020-10-16 12:27:51,237 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 414 transitions. Word has length 14 [2020-10-16 12:27:51,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:51,237 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 414 transitions. [2020-10-16 12:27:51,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:51,237 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 414 transitions. [2020-10-16 12:27:51,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:51,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:51,238 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:51,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2020-10-16 12:27:51,439 INFO L429 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:51,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:51,439 INFO L82 PathProgramCache]: Analyzing trace with hash 116765359, now seen corresponding path program 122 times [2020-10-16 12:27:51,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:51,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989097370] [2020-10-16 12:27:51,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:51,537 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:51,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989097370] [2020-10-16 12:27:51,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865327242] [2020-10-16 12:27:51,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:51,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:51,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:51,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:51,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:51,749 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:51,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:51,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:51,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1726153137] [2020-10-16 12:27:51,750 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:51,751 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:51,753 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:27:51,753 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:51,773 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:51,773 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:51,807 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:51,807 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:51,855 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [70821#(and (< ~i~0 377) (<= ~j~0 18)), 70820#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 3 ~i~0) ~j~0) 18)), 70822#(and (<= (+ ~i~0 ~j~0) 18) (< ~i~0 377))] [2020-10-16 12:27:51,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:27:51,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:51,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:27:51,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:27:51,856 INFO L87 Difference]: Start difference. First operand 165 states and 414 transitions. Second operand 13 states. [2020-10-16 12:27:52,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:52,332 INFO L93 Difference]: Finished difference Result 241 states and 581 transitions. [2020-10-16 12:27:52,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:52,333 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2020-10-16 12:27:52,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:52,335 INFO L225 Difference]: With dead ends: 241 [2020-10-16 12:27:52,335 INFO L226 Difference]: Without dead ends: 236 [2020-10-16 12:27:52,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=263, Invalid=667, Unknown=0, NotChecked=0, Total=930 [2020-10-16 12:27:52,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-16 12:27:52,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 162. [2020-10-16 12:27:52,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-16 12:27:52,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 404 transitions. [2020-10-16 12:27:52,340 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 404 transitions. Word has length 14 [2020-10-16 12:27:52,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:52,340 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 404 transitions. [2020-10-16 12:27:52,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:27:52,340 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 404 transitions. [2020-10-16 12:27:52,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:52,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:52,341 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:52,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:52,553 INFO L429 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:52,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:52,553 INFO L82 PathProgramCache]: Analyzing trace with hash 117427488, now seen corresponding path program 123 times [2020-10-16 12:27:52,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:52,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815912723] [2020-10-16 12:27:52,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:52,653 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:52,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815912723] [2020-10-16 12:27:52,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321229403] [2020-10-16 12:27:52,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:52,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:27:52,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:52,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:52,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:52,853 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:52,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:52,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:52,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [86558613] [2020-10-16 12:27:52,854 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:52,855 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:52,856 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-10-16 12:27:52,857 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:52,864 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:52,865 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:52,894 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [71466#(and (< ~i~0 377) (<= ~j~0 21))] [2020-10-16 12:27:52,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:52,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:52,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:52,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:52,895 INFO L87 Difference]: Start difference. First operand 162 states and 404 transitions. Second operand 11 states. [2020-10-16 12:27:53,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:53,374 INFO L93 Difference]: Finished difference Result 237 states and 574 transitions. [2020-10-16 12:27:53,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:53,375 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:53,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:53,376 INFO L225 Difference]: With dead ends: 237 [2020-10-16 12:27:53,376 INFO L226 Difference]: Without dead ends: 232 [2020-10-16 12:27:53,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=243, Invalid=569, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:27:53,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-16 12:27:53,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 161. [2020-10-16 12:27:53,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-16 12:27:53,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 399 transitions. [2020-10-16 12:27:53,380 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 399 transitions. Word has length 14 [2020-10-16 12:27:53,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:53,380 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 399 transitions. [2020-10-16 12:27:53,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:53,380 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 399 transitions. [2020-10-16 12:27:53,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:53,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:53,381 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:53,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2020-10-16 12:27:53,582 INFO L429 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:53,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:53,582 INFO L82 PathProgramCache]: Analyzing trace with hash 144470028, now seen corresponding path program 124 times [2020-10-16 12:27:53,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:53,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64501200] [2020-10-16 12:27:53,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:53,676 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:53,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64501200] [2020-10-16 12:27:53,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830770776] [2020-10-16 12:27:53,677 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:53,717 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:53,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:53,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:53,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:53,912 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:53,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:53,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:53,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [691987020] [2020-10-16 12:27:53,913 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:53,914 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:53,915 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-10-16 12:27:53,915 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:53,925 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:53,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:53,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:53,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:53,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:53,926 INFO L87 Difference]: Start difference. First operand 161 states and 399 transitions. Second operand 10 states. [2020-10-16 12:27:54,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:54,386 INFO L93 Difference]: Finished difference Result 241 states and 563 transitions. [2020-10-16 12:27:54,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:27:54,386 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:54,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:54,387 INFO L225 Difference]: With dead ends: 241 [2020-10-16 12:27:54,387 INFO L226 Difference]: Without dead ends: 239 [2020-10-16 12:27:54,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=203, Invalid=553, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:27:54,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-10-16 12:27:54,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 163. [2020-10-16 12:27:54,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-16 12:27:54,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 407 transitions. [2020-10-16 12:27:54,390 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 407 transitions. Word has length 14 [2020-10-16 12:27:54,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:54,390 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 407 transitions. [2020-10-16 12:27:54,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:54,390 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 407 transitions. [2020-10-16 12:27:54,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:54,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:54,391 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:54,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2020-10-16 12:27:54,591 INFO L429 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:54,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:54,592 INFO L82 PathProgramCache]: Analyzing trace with hash 144470989, now seen corresponding path program 125 times [2020-10-16 12:27:54,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:54,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292975904] [2020-10-16 12:27:54,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:54,694 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:54,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292975904] [2020-10-16 12:27:54,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825850542] [2020-10-16 12:27:54,694 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:54,734 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:27:54,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:54,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:54,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:54,937 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:54,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:54,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:54,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1201675944] [2020-10-16 12:27:54,938 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:54,939 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:54,941 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:27:54,941 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:54,941 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:54,941 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:54,977 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:54,977 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:55,026 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [72749#(and (< ~i~0 377) (<= ~j~0 19)), 72750#(and (< ~i~0 377) (<= (+ ~i~0 ~j~0) 19))] [2020-10-16 12:27:55,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:27:55,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:55,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:27:55,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:27:55,027 INFO L87 Difference]: Start difference. First operand 163 states and 407 transitions. Second operand 12 states. [2020-10-16 12:27:55,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:55,513 INFO L93 Difference]: Finished difference Result 240 states and 575 transitions. [2020-10-16 12:27:55,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:55,514 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:27:55,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:55,515 INFO L225 Difference]: With dead ends: 240 [2020-10-16 12:27:55,515 INFO L226 Difference]: Without dead ends: 235 [2020-10-16 12:27:55,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=257, Invalid=613, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:27:55,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-16 12:27:55,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 161. [2020-10-16 12:27:55,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-16 12:27:55,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 399 transitions. [2020-10-16 12:27:55,519 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 399 transitions. Word has length 14 [2020-10-16 12:27:55,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:55,519 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 399 transitions. [2020-10-16 12:27:55,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:27:55,519 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 399 transitions. [2020-10-16 12:27:55,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:55,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:55,519 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:55,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2020-10-16 12:27:55,720 INFO L429 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:55,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:55,721 INFO L82 PathProgramCache]: Analyzing trace with hash 145133118, now seen corresponding path program 126 times [2020-10-16 12:27:55,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:55,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661195184] [2020-10-16 12:27:55,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:55,827 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:55,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661195184] [2020-10-16 12:27:55,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421401696] [2020-10-16 12:27:55,828 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:55,869 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:27:55,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:55,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:55,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:56,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:56,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:56,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:56,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2074417352] [2020-10-16 12:27:56,057 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:56,058 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:56,061 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-10-16 12:27:56,061 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:56,080 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:56,080 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:56,111 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [73391#(and (<= ~j~0 17) (< ~i~0 377))] [2020-10-16 12:27:56,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:56,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:56,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:56,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:56,113 INFO L87 Difference]: Start difference. First operand 161 states and 399 transitions. Second operand 11 states. [2020-10-16 12:27:56,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:56,598 INFO L93 Difference]: Finished difference Result 235 states and 566 transitions. [2020-10-16 12:27:56,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:56,599 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:56,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:56,600 INFO L225 Difference]: With dead ends: 235 [2020-10-16 12:27:56,600 INFO L226 Difference]: Without dead ends: 230 [2020-10-16 12:27:56,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=245, Invalid=567, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:27:56,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-16 12:27:56,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 161. [2020-10-16 12:27:56,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-16 12:27:56,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 399 transitions. [2020-10-16 12:27:56,604 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 399 transitions. Word has length 14 [2020-10-16 12:27:56,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:56,604 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 399 transitions. [2020-10-16 12:27:56,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:56,604 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 399 transitions. [2020-10-16 12:27:56,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:56,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:56,605 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:56,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:56,814 INFO L429 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:56,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:56,814 INFO L82 PathProgramCache]: Analyzing trace with hash 146056639, now seen corresponding path program 127 times [2020-10-16 12:27:56,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:56,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352031642] [2020-10-16 12:27:56,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:56,911 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:56,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352031642] [2020-10-16 12:27:56,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996796131] [2020-10-16 12:27:56,912 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:56,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:56,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:57,134 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:57,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:57,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:57,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1847476950] [2020-10-16 12:27:57,135 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:57,136 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:57,138 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-10-16 12:27:57,138 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:57,148 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:57,149 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:57,179 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [74027#(and (< ~i~0 377) (<= ~j~0 16))] [2020-10-16 12:27:57,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:57,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:57,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:57,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:57,181 INFO L87 Difference]: Start difference. First operand 161 states and 399 transitions. Second operand 11 states. [2020-10-16 12:27:57,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:57,693 INFO L93 Difference]: Finished difference Result 236 states and 560 transitions. [2020-10-16 12:27:57,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:57,694 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:57,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:57,695 INFO L225 Difference]: With dead ends: 236 [2020-10-16 12:27:57,695 INFO L226 Difference]: Without dead ends: 231 [2020-10-16 12:27:57,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=243, Invalid=569, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:27:57,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-16 12:27:57,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 158. [2020-10-16 12:27:57,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-16 12:27:57,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 384 transitions. [2020-10-16 12:27:57,699 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 384 transitions. Word has length 14 [2020-10-16 12:27:57,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:57,699 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 384 transitions. [2020-10-16 12:27:57,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:57,699 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 384 transitions. [2020-10-16 12:27:57,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:57,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:57,700 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:57,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2020-10-16 12:27:57,901 INFO L429 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:57,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:57,901 INFO L82 PathProgramCache]: Analyzing trace with hash 313362251, now seen corresponding path program 128 times [2020-10-16 12:27:57,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:57,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721116804] [2020-10-16 12:27:57,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:57,999 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:57,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721116804] [2020-10-16 12:27:57,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709266762] [2020-10-16 12:27:57,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:58,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:58,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:58,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:58,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:58,221 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:58,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:58,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:58,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [254629272] [2020-10-16 12:27:58,223 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:58,223 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:58,225 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 22 transitions. [2020-10-16 12:27:58,225 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:58,237 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:58,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:58,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:58,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:58,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:58,238 INFO L87 Difference]: Start difference. First operand 158 states and 384 transitions. Second operand 10 states. [2020-10-16 12:27:58,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:58,557 INFO L93 Difference]: Finished difference Result 229 states and 527 transitions. [2020-10-16 12:27:58,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:27:58,558 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:58,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:58,558 INFO L225 Difference]: With dead ends: 229 [2020-10-16 12:27:58,558 INFO L226 Difference]: Without dead ends: 227 [2020-10-16 12:27:58,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=481, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:27:58,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-16 12:27:58,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 162. [2020-10-16 12:27:58,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-16 12:27:58,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 398 transitions. [2020-10-16 12:27:58,563 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 398 transitions. Word has length 14 [2020-10-16 12:27:58,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:58,563 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 398 transitions. [2020-10-16 12:27:58,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:58,563 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 398 transitions. [2020-10-16 12:27:58,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:58,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:58,564 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:58,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:58,773 INFO L429 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:58,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:58,773 INFO L82 PathProgramCache]: Analyzing trace with hash 313363212, now seen corresponding path program 129 times [2020-10-16 12:27:58,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:58,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520990165] [2020-10-16 12:27:58,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:58,880 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:58,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520990165] [2020-10-16 12:27:58,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246266700] [2020-10-16 12:27:58,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:58,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:27:58,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:58,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:58,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:59,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:59,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:59,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:59,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [977298815] [2020-10-16 12:27:59,129 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:59,131 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:59,132 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 22 transitions. [2020-10-16 12:27:59,132 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:59,145 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:59,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:59,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:59,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:59,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:59,146 INFO L87 Difference]: Start difference. First operand 162 states and 398 transitions. Second operand 10 states. [2020-10-16 12:27:59,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:59,466 INFO L93 Difference]: Finished difference Result 227 states and 523 transitions. [2020-10-16 12:27:59,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:27:59,466 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:59,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:59,467 INFO L225 Difference]: With dead ends: 227 [2020-10-16 12:27:59,467 INFO L226 Difference]: Without dead ends: 225 [2020-10-16 12:27:59,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:27:59,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-16 12:27:59,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 160. [2020-10-16 12:27:59,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-16 12:27:59,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 392 transitions. [2020-10-16 12:27:59,470 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 392 transitions. Word has length 14 [2020-10-16 12:27:59,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:59,471 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 392 transitions. [2020-10-16 12:27:59,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:59,471 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 392 transitions. [2020-10-16 12:27:59,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:59,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:59,471 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:59,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,138 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:59,672 INFO L429 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:59,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:59,673 INFO L82 PathProgramCache]: Analyzing trace with hash 313392042, now seen corresponding path program 130 times [2020-10-16 12:27:59,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:59,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531420023] [2020-10-16 12:27:59,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:59,776 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:59,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531420023] [2020-10-16 12:27:59,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234508408] [2020-10-16 12:27:59,777 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:59,819 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:59,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:59,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:59,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:00,080 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:00,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:00,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:00,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [576377573] [2020-10-16 12:28:00,081 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:00,082 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:00,083 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 22 transitions. [2020-10-16 12:28:00,084 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:00,095 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:00,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:28:00,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:00,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:28:00,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:00,095 INFO L87 Difference]: Start difference. First operand 160 states and 392 transitions. Second operand 10 states. [2020-10-16 12:28:00,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:00,410 INFO L93 Difference]: Finished difference Result 236 states and 540 transitions. [2020-10-16 12:28:00,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:00,411 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:28:00,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:00,411 INFO L225 Difference]: With dead ends: 236 [2020-10-16 12:28:00,411 INFO L226 Difference]: Without dead ends: 234 [2020-10-16 12:28:00,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:28:00,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-16 12:28:00,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 160. [2020-10-16 12:28:00,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-16 12:28:00,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 393 transitions. [2020-10-16 12:28:00,415 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 393 transitions. Word has length 14 [2020-10-16 12:28:00,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:00,415 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 393 transitions. [2020-10-16 12:28:00,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:28:00,415 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 393 transitions. [2020-10-16 12:28:00,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:00,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:00,416 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:00,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,139 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:00,617 INFO L429 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:00,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:00,617 INFO L82 PathProgramCache]: Analyzing trace with hash 313393003, now seen corresponding path program 131 times [2020-10-16 12:28:00,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:00,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068191863] [2020-10-16 12:28:00,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:00,714 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:00,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068191863] [2020-10-16 12:28:00,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899706539] [2020-10-16 12:28:00,714 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:00,765 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:28:00,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:00,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:00,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:00,984 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:00,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:00,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:00,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1468812964] [2020-10-16 12:28:00,985 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:00,987 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:00,988 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 22 transitions. [2020-10-16 12:28:00,989 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:01,005 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:01,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:28:01,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:01,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:28:01,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:01,006 INFO L87 Difference]: Start difference. First operand 160 states and 393 transitions. Second operand 10 states. [2020-10-16 12:28:01,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:01,315 INFO L93 Difference]: Finished difference Result 228 states and 522 transitions. [2020-10-16 12:28:01,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:28:01,316 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:28:01,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:01,317 INFO L225 Difference]: With dead ends: 228 [2020-10-16 12:28:01,317 INFO L226 Difference]: Without dead ends: 226 [2020-10-16 12:28:01,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:28:01,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-16 12:28:01,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 157. [2020-10-16 12:28:01,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-16 12:28:01,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 384 transitions. [2020-10-16 12:28:01,322 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 384 transitions. Word has length 14 [2020-10-16 12:28:01,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:01,322 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 384 transitions. [2020-10-16 12:28:01,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:28:01,322 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 384 transitions. [2020-10-16 12:28:01,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:01,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:01,322 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:01,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,140 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:01,523 INFO L429 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:01,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:01,524 INFO L82 PathProgramCache]: Analyzing trace with hash 314285772, now seen corresponding path program 132 times [2020-10-16 12:28:01,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:01,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798846056] [2020-10-16 12:28:01,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:01,624 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:01,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798846056] [2020-10-16 12:28:01,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508693660] [2020-10-16 12:28:01,625 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:01,664 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:28:01,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:01,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:01,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:01,851 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:01,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:01,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:01,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1031940008] [2020-10-16 12:28:01,852 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:01,853 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:01,855 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 12:28:01,855 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:01,864 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:01,865 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:01,900 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [77144#(and (< ~i~0 377) (<= (+ ~i~0 (* 3 ~j~0)) 18))] [2020-10-16 12:28:01,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:01,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:01,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:01,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:01,901 INFO L87 Difference]: Start difference. First operand 157 states and 384 transitions. Second operand 11 states. [2020-10-16 12:28:02,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:02,298 INFO L93 Difference]: Finished difference Result 244 states and 559 transitions. [2020-10-16 12:28:02,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:28:02,299 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:02,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:02,300 INFO L225 Difference]: With dead ends: 244 [2020-10-16 12:28:02,300 INFO L226 Difference]: Without dead ends: 242 [2020-10-16 12:28:02,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:28:02,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-16 12:28:02,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 160. [2020-10-16 12:28:02,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-16 12:28:02,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 395 transitions. [2020-10-16 12:28:02,304 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 395 transitions. Word has length 14 [2020-10-16 12:28:02,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:02,304 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 395 transitions. [2020-10-16 12:28:02,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:02,304 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 395 transitions. [2020-10-16 12:28:02,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:02,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:02,305 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:02,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144,141 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:02,506 INFO L429 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:02,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:02,506 INFO L82 PathProgramCache]: Analyzing trace with hash 314286733, now seen corresponding path program 133 times [2020-10-16 12:28:02,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:02,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877436505] [2020-10-16 12:28:02,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:02,611 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:02,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877436505] [2020-10-16 12:28:02,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607564420] [2020-10-16 12:28:02,612 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:02,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:02,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:02,842 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:02,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:02,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:02,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [598674364] [2020-10-16 12:28:02,843 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:02,845 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:02,847 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 12:28:02,847 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:02,858 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:02,858 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:02,894 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [77785#(and (<= (+ (* 2 ~i~0) (* 3 ~j~0)) 21) (< ~i~0 377))] [2020-10-16 12:28:02,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:02,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:02,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:02,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:02,896 INFO L87 Difference]: Start difference. First operand 160 states and 395 transitions. Second operand 11 states. [2020-10-16 12:28:03,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:03,286 INFO L93 Difference]: Finished difference Result 241 states and 553 transitions. [2020-10-16 12:28:03,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:03,287 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:03,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:03,288 INFO L225 Difference]: With dead ends: 241 [2020-10-16 12:28:03,288 INFO L226 Difference]: Without dead ends: 239 [2020-10-16 12:28:03,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:28:03,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-10-16 12:28:03,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 157. [2020-10-16 12:28:03,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-16 12:28:03,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 386 transitions. [2020-10-16 12:28:03,293 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 386 transitions. Word has length 14 [2020-10-16 12:28:03,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:03,293 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 386 transitions. [2020-10-16 12:28:03,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:03,293 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 386 transitions. [2020-10-16 12:28:03,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:03,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:03,294 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:03,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2020-10-16 12:28:03,503 INFO L429 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:03,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:03,503 INFO L82 PathProgramCache]: Analyzing trace with hash 950591741, now seen corresponding path program 134 times [2020-10-16 12:28:03,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:03,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619630305] [2020-10-16 12:28:03,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:03,601 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:03,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619630305] [2020-10-16 12:28:03,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910966870] [2020-10-16 12:28:03,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:03,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:28:03,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:03,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:03,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:03,811 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:03,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:03,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:03,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1140607001] [2020-10-16 12:28:03,812 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:03,814 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:03,816 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 22 transitions. [2020-10-16 12:28:03,816 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:03,826 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:03,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:28:03,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:03,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:28:03,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:03,827 INFO L87 Difference]: Start difference. First operand 157 states and 386 transitions. Second operand 10 states. [2020-10-16 12:28:04,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:04,187 INFO L93 Difference]: Finished difference Result 238 states and 549 transitions. [2020-10-16 12:28:04,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:04,187 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:28:04,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:04,188 INFO L225 Difference]: With dead ends: 238 [2020-10-16 12:28:04,188 INFO L226 Difference]: Without dead ends: 236 [2020-10-16 12:28:04,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:28:04,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-16 12:28:04,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 160. [2020-10-16 12:28:04,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-16 12:28:04,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 397 transitions. [2020-10-16 12:28:04,191 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 397 transitions. Word has length 14 [2020-10-16 12:28:04,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:04,191 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 397 transitions. [2020-10-16 12:28:04,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:28:04,191 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 397 transitions. [2020-10-16 12:28:04,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:04,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:04,192 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:04,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2020-10-16 12:28:04,393 INFO L429 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:04,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:04,394 INFO L82 PathProgramCache]: Analyzing trace with hash 950592702, now seen corresponding path program 135 times [2020-10-16 12:28:04,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:04,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262215570] [2020-10-16 12:28:04,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:04,494 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:04,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262215570] [2020-10-16 12:28:04,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808854721] [2020-10-16 12:28:04,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:04,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:28:04,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:04,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:04,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:04,717 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:04,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:04,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:04,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [873471565] [2020-10-16 12:28:04,719 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:04,720 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:04,721 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 22 transitions. [2020-10-16 12:28:04,721 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:04,731 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:04,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:28:04,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:04,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:28:04,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:04,732 INFO L87 Difference]: Start difference. First operand 160 states and 397 transitions. Second operand 10 states. [2020-10-16 12:28:05,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:05,098 INFO L93 Difference]: Finished difference Result 236 states and 545 transitions. [2020-10-16 12:28:05,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:05,098 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:28:05,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:05,099 INFO L225 Difference]: With dead ends: 236 [2020-10-16 12:28:05,099 INFO L226 Difference]: Without dead ends: 234 [2020-10-16 12:28:05,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=167, Invalid=483, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:28:05,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-16 12:28:05,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 157. [2020-10-16 12:28:05,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-16 12:28:05,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 386 transitions. [2020-10-16 12:28:05,104 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 386 transitions. Word has length 14 [2020-10-16 12:28:05,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:05,104 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 386 transitions. [2020-10-16 12:28:05,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:28:05,104 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 386 transitions. [2020-10-16 12:28:05,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:05,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:05,105 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:05,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 144 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2020-10-16 12:28:05,311 INFO L429 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:05,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:05,312 INFO L82 PathProgramCache]: Analyzing trace with hash 950621532, now seen corresponding path program 136 times [2020-10-16 12:28:05,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:05,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851764272] [2020-10-16 12:28:05,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:05,410 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:05,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851764272] [2020-10-16 12:28:05,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303578143] [2020-10-16 12:28:05,411 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:05,449 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:28:05,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:05,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:05,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:06,399 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:06,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:06,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:06,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [972647820] [2020-10-16 12:28:06,400 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:06,401 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:06,403 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 12:28:06,403 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:06,411 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:06,411 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:06,449 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [79673#(and (<= (+ ~i~0 (* 2 ~j~0)) 19) (< ~i~0 377))] [2020-10-16 12:28:06,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:06,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:06,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:06,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:06,450 INFO L87 Difference]: Start difference. First operand 157 states and 386 transitions. Second operand 11 states. [2020-10-16 12:28:06,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:06,913 INFO L93 Difference]: Finished difference Result 251 states and 582 transitions. [2020-10-16 12:28:06,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-16 12:28:06,914 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:06,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:06,915 INFO L225 Difference]: With dead ends: 251 [2020-10-16 12:28:06,915 INFO L226 Difference]: Without dead ends: 249 [2020-10-16 12:28:06,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=216, Invalid=654, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:28:06,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-16 12:28:06,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 163. [2020-10-16 12:28:06,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-16 12:28:06,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 410 transitions. [2020-10-16 12:28:06,920 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 410 transitions. Word has length 14 [2020-10-16 12:28:06,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:06,920 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 410 transitions. [2020-10-16 12:28:06,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:06,920 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 410 transitions. [2020-10-16 12:28:06,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:06,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:06,921 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:07,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2020-10-16 12:28:07,132 INFO L429 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:07,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:07,132 INFO L82 PathProgramCache]: Analyzing trace with hash 950622493, now seen corresponding path program 137 times [2020-10-16 12:28:07,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:07,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451868053] [2020-10-16 12:28:07,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:07,235 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:07,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451868053] [2020-10-16 12:28:07,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361675673] [2020-10-16 12:28:07,235 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:07,275 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:28:07,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:07,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:07,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:07,477 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:07,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:07,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:07,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1780409046] [2020-10-16 12:28:07,478 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:07,479 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:07,481 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-10-16 12:28:07,482 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:07,493 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:07,493 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:07,525 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:07,526 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:07,565 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:07,565 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:07,601 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [80331#(and (<= ~j~0 17) (< ~i~0 377)), 80333#(and (< ~i~0 377) (<= (+ (* 2 ~i~0) ~j~0) 17)), 80332#(and (< ~i~0 377) (<= (+ ~i~0 ~j~0) 17))] [2020-10-16 12:28:07,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:28:07,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:07,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:28:07,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:28:07,602 INFO L87 Difference]: Start difference. First operand 163 states and 410 transitions. Second operand 13 states. [2020-10-16 12:28:08,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:08,074 INFO L93 Difference]: Finished difference Result 253 states and 604 transitions. [2020-10-16 12:28:08,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:08,075 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2020-10-16 12:28:08,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:08,076 INFO L225 Difference]: With dead ends: 253 [2020-10-16 12:28:08,076 INFO L226 Difference]: Without dead ends: 248 [2020-10-16 12:28:08,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-10-16 12:28:08,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-16 12:28:08,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 161. [2020-10-16 12:28:08,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-16 12:28:08,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 404 transitions. [2020-10-16 12:28:08,080 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 404 transitions. Word has length 14 [2020-10-16 12:28:08,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:08,080 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 404 transitions. [2020-10-16 12:28:08,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:28:08,081 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 404 transitions. [2020-10-16 12:28:08,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:08,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:08,081 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:08,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,146 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:08,282 INFO L429 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:08,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:08,283 INFO L82 PathProgramCache]: Analyzing trace with hash 971147531, now seen corresponding path program 138 times [2020-10-16 12:28:08,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:08,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530618846] [2020-10-16 12:28:08,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:08,384 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:08,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530618846] [2020-10-16 12:28:08,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033410080] [2020-10-16 12:28:08,385 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:08,433 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-16 12:28:08,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:08,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:08,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:08,601 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:08,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:08,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:08,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1333200529] [2020-10-16 12:28:08,602 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:08,603 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:08,605 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 22 transitions. [2020-10-16 12:28:08,605 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:08,617 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:08,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:28:08,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:08,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:28:08,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:08,618 INFO L87 Difference]: Start difference. First operand 161 states and 404 transitions. Second operand 10 states. [2020-10-16 12:28:09,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:09,093 INFO L93 Difference]: Finished difference Result 242 states and 567 transitions. [2020-10-16 12:28:09,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:28:09,094 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:28:09,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:09,095 INFO L225 Difference]: With dead ends: 242 [2020-10-16 12:28:09,095 INFO L226 Difference]: Without dead ends: 240 [2020-10-16 12:28:09,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:28:09,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-16 12:28:09,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 163. [2020-10-16 12:28:09,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-16 12:28:09,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 412 transitions. [2020-10-16 12:28:09,099 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 412 transitions. Word has length 14 [2020-10-16 12:28:09,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:09,099 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 412 transitions. [2020-10-16 12:28:09,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:28:09,099 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 412 transitions. [2020-10-16 12:28:09,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:09,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:09,100 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:09,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable150 [2020-10-16 12:28:09,301 INFO L429 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:09,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:09,301 INFO L82 PathProgramCache]: Analyzing trace with hash 971148492, now seen corresponding path program 139 times [2020-10-16 12:28:09,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:09,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776150502] [2020-10-16 12:28:09,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:09,417 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:09,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776150502] [2020-10-16 12:28:09,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064115802] [2020-10-16 12:28:09,418 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:09,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:09,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:09,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:09,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:09,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:09,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:09,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [47430721] [2020-10-16 12:28:09,672 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:09,672 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:09,674 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-10-16 12:28:09,675 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:09,683 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:09,683 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:09,718 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:09,719 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:09,763 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [81633#(and (< ~i~0 377) (<= ~j~0 16)), 81634#(and (< ~i~0 377) (<= (+ ~i~0 ~j~0) 16))] [2020-10-16 12:28:09,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:28:09,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:09,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:28:09,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:09,764 INFO L87 Difference]: Start difference. First operand 163 states and 412 transitions. Second operand 12 states. [2020-10-16 12:28:10,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:10,231 INFO L93 Difference]: Finished difference Result 247 states and 591 transitions. [2020-10-16 12:28:10,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:10,231 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:28:10,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:10,232 INFO L225 Difference]: With dead ends: 247 [2020-10-16 12:28:10,232 INFO L226 Difference]: Without dead ends: 242 [2020-10-16 12:28:10,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=254, Invalid=616, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:28:10,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-16 12:28:10,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 161. [2020-10-16 12:28:10,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-16 12:28:10,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 404 transitions. [2020-10-16 12:28:10,237 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 404 transitions. Word has length 14 [2020-10-16 12:28:10,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:10,238 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 404 transitions. [2020-10-16 12:28:10,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:28:10,238 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 404 transitions. [2020-10-16 12:28:10,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:10,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:10,239 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:10,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:10,440 INFO L429 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:10,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:10,441 INFO L82 PathProgramCache]: Analyzing trace with hash 971810621, now seen corresponding path program 140 times [2020-10-16 12:28:10,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:10,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463653182] [2020-10-16 12:28:10,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:10,540 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:10,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463653182] [2020-10-16 12:28:10,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580438424] [2020-10-16 12:28:10,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:10,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:28:10,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:10,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:10,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:10,744 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:10,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:10,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:10,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [776071598] [2020-10-16 12:28:10,745 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:10,746 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:10,751 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 12:28:10,751 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:10,752 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:10,752 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:10,801 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [82282#(and (<= ~j~0 11) (< ~i~0 377))] [2020-10-16 12:28:10,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:10,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:10,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:10,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:10,802 INFO L87 Difference]: Start difference. First operand 161 states and 404 transitions. Second operand 11 states. [2020-10-16 12:28:11,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:11,287 INFO L93 Difference]: Finished difference Result 246 states and 593 transitions. [2020-10-16 12:28:11,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:11,287 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:11,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:11,288 INFO L225 Difference]: With dead ends: 246 [2020-10-16 12:28:11,288 INFO L226 Difference]: Without dead ends: 241 [2020-10-16 12:28:11,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=239, Invalid=573, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:28:11,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-16 12:28:11,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 161. [2020-10-16 12:28:11,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-16 12:28:11,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 404 transitions. [2020-10-16 12:28:11,291 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 404 transitions. Word has length 14 [2020-10-16 12:28:11,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:11,291 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 404 transitions. [2020-10-16 12:28:11,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:11,291 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 404 transitions. [2020-10-16 12:28:11,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:11,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:11,292 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:11,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,149 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:11,492 INFO L429 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:11,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:11,493 INFO L82 PathProgramCache]: Analyzing trace with hash 972734142, now seen corresponding path program 141 times [2020-10-16 12:28:11,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:11,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865767782] [2020-10-16 12:28:11,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:11,597 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:11,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865767782] [2020-10-16 12:28:11,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752468003] [2020-10-16 12:28:11,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:11,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:28:11,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:11,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:11,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:11,851 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:11,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:11,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:11,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1071327313] [2020-10-16 12:28:11,851 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:11,852 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:11,854 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 12:28:11,854 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:11,863 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:11,863 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:11,898 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [82929#(and (< ~i~0 377) (<= ~j~0 19))] [2020-10-16 12:28:11,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:11,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:11,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:11,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:11,899 INFO L87 Difference]: Start difference. First operand 161 states and 404 transitions. Second operand 11 states. [2020-10-16 12:28:12,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:12,411 INFO L93 Difference]: Finished difference Result 250 states and 596 transitions. [2020-10-16 12:28:12,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:12,412 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:12,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:12,413 INFO L225 Difference]: With dead ends: 250 [2020-10-16 12:28:12,413 INFO L226 Difference]: Without dead ends: 245 [2020-10-16 12:28:12,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=239, Invalid=573, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:28:12,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-16 12:28:12,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 159. [2020-10-16 12:28:12,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-16 12:28:12,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 394 transitions. [2020-10-16 12:28:12,417 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 394 transitions. Word has length 14 [2020-10-16 12:28:12,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:12,418 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 394 transitions. [2020-10-16 12:28:12,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:12,418 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 394 transitions. [2020-10-16 12:28:12,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:12,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:12,418 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:12,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable153 [2020-10-16 12:28:12,628 INFO L429 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:12,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:12,628 INFO L82 PathProgramCache]: Analyzing trace with hash 979250683, now seen corresponding path program 142 times [2020-10-16 12:28:12,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:12,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916099333] [2020-10-16 12:28:12,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:12,724 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:12,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916099333] [2020-10-16 12:28:12,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197411385] [2020-10-16 12:28:12,725 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:12,768 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:28:12,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:12,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:12,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:12,953 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:12,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:12,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:12,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1308562525] [2020-10-16 12:28:12,954 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:12,954 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:12,956 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-10-16 12:28:12,956 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:12,985 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:12,985 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:13,025 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [83577#(and (<= (+ ~i~0 (* 2 ~j~0)) 19) (< ~i~0 377)), 83576#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 5 ~i~0) (* 2 ~j~0)) 19))] [2020-10-16 12:28:13,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:28:13,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:13,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:28:13,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:13,026 INFO L87 Difference]: Start difference. First operand 159 states and 394 transitions. Second operand 12 states. [2020-10-16 12:28:13,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:13,494 INFO L93 Difference]: Finished difference Result 253 states and 581 transitions. [2020-10-16 12:28:13,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:28:13,495 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:28:13,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:13,496 INFO L225 Difference]: With dead ends: 253 [2020-10-16 12:28:13,496 INFO L226 Difference]: Without dead ends: 251 [2020-10-16 12:28:13,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:28:13,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-16 12:28:13,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 157. [2020-10-16 12:28:13,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-16 12:28:13,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 392 transitions. [2020-10-16 12:28:13,500 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 392 transitions. Word has length 14 [2020-10-16 12:28:13,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:13,500 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 392 transitions. [2020-10-16 12:28:13,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:28:13,501 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 392 transitions. [2020-10-16 12:28:13,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:13,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:13,501 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:13,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,151 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:13,703 INFO L429 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:13,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:13,703 INFO L82 PathProgramCache]: Analyzing trace with hash 979251644, now seen corresponding path program 143 times [2020-10-16 12:28:13,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:13,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091676265] [2020-10-16 12:28:13,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:13,808 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:13,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091676265] [2020-10-16 12:28:13,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747788080] [2020-10-16 12:28:13,808 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:13,848 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:28:13,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:13,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:13,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:14,033 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:14,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:14,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:14,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [416710952] [2020-10-16 12:28:14,034 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:14,035 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:14,037 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:28:14,038 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:14,038 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:14,038 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:14,071 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:14,071 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:14,115 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:14,115 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:14,178 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [84225#(and (< ~i~0 377) (<= (+ (* 2 ~i~0) ~j~0) 14)), 84224#(and (<= (+ ~i~0 ~j~0) 14) (< ~i~0 377)), 84226#(and (<= (+ (* 4 ~i~0) ~j~0) 14) (= ULTIMATE.start_main_~condI~0 0)), 84223#(and (<= ~j~0 14) (< ~i~0 377))] [2020-10-16 12:28:14,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 12:28:14,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:14,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 12:28:14,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:28:14,180 INFO L87 Difference]: Start difference. First operand 157 states and 392 transitions. Second operand 14 states. [2020-10-16 12:28:14,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:14,678 INFO L93 Difference]: Finished difference Result 252 states and 596 transitions. [2020-10-16 12:28:14,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:14,679 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2020-10-16 12:28:14,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:14,679 INFO L225 Difference]: With dead ends: 252 [2020-10-16 12:28:14,680 INFO L226 Difference]: Without dead ends: 247 [2020-10-16 12:28:14,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=279, Invalid=713, Unknown=0, NotChecked=0, Total=992 [2020-10-16 12:28:14,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-16 12:28:14,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 152. [2020-10-16 12:28:14,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-16 12:28:14,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 374 transitions. [2020-10-16 12:28:14,684 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 374 transitions. Word has length 14 [2020-10-16 12:28:14,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:14,684 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 374 transitions. [2020-10-16 12:28:14,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 12:28:14,684 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 374 transitions. [2020-10-16 12:28:14,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:14,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:14,685 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:14,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2020-10-16 12:28:14,894 INFO L429 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:14,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:14,894 INFO L82 PathProgramCache]: Analyzing trace with hash 999776682, now seen corresponding path program 144 times [2020-10-16 12:28:14,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:14,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464299008] [2020-10-16 12:28:14,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:15,005 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:15,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464299008] [2020-10-16 12:28:15,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310588362] [2020-10-16 12:28:15,006 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:15,046 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:28:15,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:15,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:15,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:15,226 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:15,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:15,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:15,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1212751569] [2020-10-16 12:28:15,227 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:15,229 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:15,231 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 22 transitions. [2020-10-16 12:28:15,231 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:15,247 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:15,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:28:15,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:15,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:28:15,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:15,249 INFO L87 Difference]: Start difference. First operand 152 states and 374 transitions. Second operand 10 states. [2020-10-16 12:28:15,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:15,716 INFO L93 Difference]: Finished difference Result 241 states and 553 transitions. [2020-10-16 12:28:15,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:28:15,717 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:28:15,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:15,718 INFO L225 Difference]: With dead ends: 241 [2020-10-16 12:28:15,718 INFO L226 Difference]: Without dead ends: 239 [2020-10-16 12:28:15,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=202, Invalid=554, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:28:15,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-10-16 12:28:15,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 154. [2020-10-16 12:28:15,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-16 12:28:15,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 382 transitions. [2020-10-16 12:28:15,721 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 382 transitions. Word has length 14 [2020-10-16 12:28:15,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:15,721 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 382 transitions. [2020-10-16 12:28:15,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:28:15,721 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 382 transitions. [2020-10-16 12:28:15,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:15,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:15,722 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:15,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2020-10-16 12:28:15,923 INFO L429 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:15,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:15,923 INFO L82 PathProgramCache]: Analyzing trace with hash 999777643, now seen corresponding path program 145 times [2020-10-16 12:28:15,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:15,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483734334] [2020-10-16 12:28:15,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:16,024 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:16,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483734334] [2020-10-16 12:28:16,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226797910] [2020-10-16 12:28:16,025 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:16,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:16,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:16,222 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:16,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:16,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:16,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1706565570] [2020-10-16 12:28:16,224 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:16,225 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:16,228 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-10-16 12:28:16,229 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:16,230 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:16,230 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:16,273 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:16,273 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:16,335 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [85489#(and (< ~i~0 377) (<= (+ ~i~0 ~j~0) 21)), 85488#(and (< ~i~0 377) (<= ~j~0 21))] [2020-10-16 12:28:16,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:28:16,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:16,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:28:16,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:16,337 INFO L87 Difference]: Start difference. First operand 154 states and 382 transitions. Second operand 12 states. [2020-10-16 12:28:17,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:17,005 INFO L93 Difference]: Finished difference Result 241 states and 567 transitions. [2020-10-16 12:28:17,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:17,025 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:28:17,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:17,026 INFO L225 Difference]: With dead ends: 241 [2020-10-16 12:28:17,026 INFO L226 Difference]: Without dead ends: 236 [2020-10-16 12:28:17,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=258, Invalid=612, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:28:17,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-16 12:28:17,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 152. [2020-10-16 12:28:17,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-16 12:28:17,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 374 transitions. [2020-10-16 12:28:17,032 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 374 transitions. Word has length 14 [2020-10-16 12:28:17,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:17,033 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 374 transitions. [2020-10-16 12:28:17,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:28:17,033 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 374 transitions. [2020-10-16 12:28:17,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:17,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:17,034 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:17,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 154 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2020-10-16 12:28:17,245 INFO L429 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:17,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:17,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1000439772, now seen corresponding path program 146 times [2020-10-16 12:28:17,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:17,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672511768] [2020-10-16 12:28:17,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:17,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:17,351 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:17,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672511768] [2020-10-16 12:28:17,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843831111] [2020-10-16 12:28:17,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:17,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:28:17,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:17,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:17,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:17,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:17,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:17,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:17,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1684139856] [2020-10-16 12:28:17,563 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:17,564 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:17,566 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 12:28:17,566 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:17,576 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:17,576 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:17,611 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [86113#(and (< ~i~0 377) (<= ~j~0 18))] [2020-10-16 12:28:17,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:17,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:17,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:17,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:17,612 INFO L87 Difference]: Start difference. First operand 152 states and 374 transitions. Second operand 11 states. [2020-10-16 12:28:18,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:18,120 INFO L93 Difference]: Finished difference Result 239 states and 566 transitions. [2020-10-16 12:28:18,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:18,120 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:18,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:18,121 INFO L225 Difference]: With dead ends: 239 [2020-10-16 12:28:18,121 INFO L226 Difference]: Without dead ends: 234 [2020-10-16 12:28:18,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=243, Invalid=569, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:28:18,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-16 12:28:18,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 151. [2020-10-16 12:28:18,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-16 12:28:18,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 373 transitions. [2020-10-16 12:28:18,128 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 373 transitions. Word has length 14 [2020-10-16 12:28:18,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:18,128 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 373 transitions. [2020-10-16 12:28:18,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:18,128 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 373 transitions. [2020-10-16 12:28:18,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:18,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:18,129 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:18,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2020-10-16 12:28:18,330 INFO L429 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:18,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:18,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1001363293, now seen corresponding path program 147 times [2020-10-16 12:28:18,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:18,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131166562] [2020-10-16 12:28:18,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:18,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:18,440 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:18,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131166562] [2020-10-16 12:28:18,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974872431] [2020-10-16 12:28:18,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:18,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 12:28:18,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:18,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:18,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:18,681 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:18,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:18,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:18,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [71395823] [2020-10-16 12:28:18,685 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:18,686 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:18,688 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 12:28:18,688 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:18,700 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:18,700 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:18,735 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [86733#(and (< ~i~0 377) (<= ~j~0 19))] [2020-10-16 12:28:18,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:18,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:18,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:18,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:18,736 INFO L87 Difference]: Start difference. First operand 151 states and 373 transitions. Second operand 11 states. [2020-10-16 12:28:19,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:19,260 INFO L93 Difference]: Finished difference Result 233 states and 548 transitions. [2020-10-16 12:28:19,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:19,261 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:19,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:19,262 INFO L225 Difference]: With dead ends: 233 [2020-10-16 12:28:19,262 INFO L226 Difference]: Without dead ends: 228 [2020-10-16 12:28:19,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=245, Invalid=567, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:28:19,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-16 12:28:19,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 149. [2020-10-16 12:28:19,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-16 12:28:19,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 359 transitions. [2020-10-16 12:28:19,266 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 359 transitions. Word has length 14 [2020-10-16 12:28:19,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:19,266 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 359 transitions. [2020-10-16 12:28:19,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:19,266 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 359 transitions. [2020-10-16 12:28:19,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:19,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:19,266 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:19,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:19,467 INFO L429 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:19,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:19,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1838095422, now seen corresponding path program 148 times [2020-10-16 12:28:19,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:19,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515308579] [2020-10-16 12:28:19,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:19,576 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:19,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515308579] [2020-10-16 12:28:19,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044762753] [2020-10-16 12:28:19,576 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:19,615 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:28:19,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:19,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:19,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:19,835 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:19,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:19,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:19,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [54635767] [2020-10-16 12:28:19,836 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:19,836 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:19,838 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 12:28:19,838 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:19,858 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:19,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:28:19,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:19,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:28:19,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:19,859 INFO L87 Difference]: Start difference. First operand 149 states and 359 transitions. Second operand 10 states. [2020-10-16 12:28:20,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:20,191 INFO L93 Difference]: Finished difference Result 236 states and 533 transitions. [2020-10-16 12:28:20,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:28:20,192 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:28:20,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:20,193 INFO L225 Difference]: With dead ends: 236 [2020-10-16 12:28:20,193 INFO L226 Difference]: Without dead ends: 234 [2020-10-16 12:28:20,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:28:20,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-16 12:28:20,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 150. [2020-10-16 12:28:20,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-16 12:28:20,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 362 transitions. [2020-10-16 12:28:20,197 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 362 transitions. Word has length 14 [2020-10-16 12:28:20,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:20,197 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 362 transitions. [2020-10-16 12:28:20,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:28:20,198 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 362 transitions. [2020-10-16 12:28:20,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:20,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:20,198 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:20,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,157 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:20,399 INFO L429 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:20,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:20,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1838096383, now seen corresponding path program 149 times [2020-10-16 12:28:20,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:20,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680200673] [2020-10-16 12:28:20,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:20,502 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:20,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680200673] [2020-10-16 12:28:20,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981111006] [2020-10-16 12:28:20,503 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:20,545 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-16 12:28:20,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:20,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:20,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:20,795 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:20,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:20,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:20,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [904597602] [2020-10-16 12:28:20,796 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:20,797 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:20,799 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 12:28:20,799 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:20,818 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:20,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:28:20,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:20,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:28:20,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:20,819 INFO L87 Difference]: Start difference. First operand 150 states and 362 transitions. Second operand 10 states. [2020-10-16 12:28:21,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:21,142 INFO L93 Difference]: Finished difference Result 233 states and 527 transitions. [2020-10-16 12:28:21,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:28:21,142 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:28:21,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:21,143 INFO L225 Difference]: With dead ends: 233 [2020-10-16 12:28:21,143 INFO L226 Difference]: Without dead ends: 231 [2020-10-16 12:28:21,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:28:21,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-16 12:28:21,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 148. [2020-10-16 12:28:21,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-16 12:28:21,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 356 transitions. [2020-10-16 12:28:21,147 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 356 transitions. Word has length 14 [2020-10-16 12:28:21,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:21,147 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 356 transitions. [2020-10-16 12:28:21,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:28:21,147 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 356 transitions. [2020-10-16 12:28:21,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:21,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:21,148 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:21,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,158 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:21,349 INFO L429 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:21,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:21,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1858651212, now seen corresponding path program 150 times [2020-10-16 12:28:21,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:21,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787009687] [2020-10-16 12:28:21,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:21,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:21,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787009687] [2020-10-16 12:28:21,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140098333] [2020-10-16 12:28:21,450 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:21,492 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:28:21,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:21,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:21,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:21,705 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:21,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:21,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:21,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [281862611] [2020-10-16 12:28:21,706 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:21,706 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:21,708 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 12:28:21,708 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:21,722 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:21,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:28:21,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:21,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:28:21,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:21,723 INFO L87 Difference]: Start difference. First operand 148 states and 356 transitions. Second operand 10 states. [2020-10-16 12:28:22,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:22,081 INFO L93 Difference]: Finished difference Result 244 states and 556 transitions. [2020-10-16 12:28:22,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:22,081 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:28:22,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:22,082 INFO L225 Difference]: With dead ends: 244 [2020-10-16 12:28:22,082 INFO L226 Difference]: Without dead ends: 242 [2020-10-16 12:28:22,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=174, Invalid=476, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:28:22,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-16 12:28:22,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 150. [2020-10-16 12:28:22,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-16 12:28:22,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 364 transitions. [2020-10-16 12:28:22,086 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 364 transitions. Word has length 14 [2020-10-16 12:28:22,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:22,086 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 364 transitions. [2020-10-16 12:28:22,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:28:22,086 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 364 transitions. [2020-10-16 12:28:22,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:22,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:22,087 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:22,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,159 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:22,288 INFO L429 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:22,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:22,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1858652173, now seen corresponding path program 151 times [2020-10-16 12:28:22,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:22,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350356509] [2020-10-16 12:28:22,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:22,387 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:22,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350356509] [2020-10-16 12:28:22,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593793731] [2020-10-16 12:28:22,388 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:22,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:22,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:22,663 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:22,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:22,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:22,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [820649439] [2020-10-16 12:28:22,664 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:22,665 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:22,667 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-10-16 12:28:22,667 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:22,669 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:22,670 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:22,705 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:22,705 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:22,757 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [89169#(and (< ~i~0 377) (<= (+ ~i~0 ~j~0) 17)), 89168#(and (<= ~j~0 17) (< ~i~0 377))] [2020-10-16 12:28:22,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:28:22,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:22,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:28:22,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:22,758 INFO L87 Difference]: Start difference. First operand 150 states and 364 transitions. Second operand 12 states. [2020-10-16 12:28:23,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:23,189 INFO L93 Difference]: Finished difference Result 247 states and 580 transitions. [2020-10-16 12:28:23,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:23,190 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:28:23,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:23,191 INFO L225 Difference]: With dead ends: 247 [2020-10-16 12:28:23,191 INFO L226 Difference]: Without dead ends: 242 [2020-10-16 12:28:23,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=245, Invalid=567, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:28:23,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-16 12:28:23,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 149. [2020-10-16 12:28:23,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-16 12:28:23,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 361 transitions. [2020-10-16 12:28:23,195 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 361 transitions. Word has length 14 [2020-10-16 12:28:23,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:23,195 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 361 transitions. [2020-10-16 12:28:23,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:28:23,195 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 361 transitions. [2020-10-16 12:28:23,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:23,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:23,195 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:23,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,160 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:23,396 INFO L429 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:23,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:23,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1859314302, now seen corresponding path program 152 times [2020-10-16 12:28:23,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:23,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766436769] [2020-10-16 12:28:23,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:23,511 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:23,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766436769] [2020-10-16 12:28:23,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898794838] [2020-10-16 12:28:23,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:23,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:28:23,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:23,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:23,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:23,861 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:23,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:23,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:23,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [621928578] [2020-10-16 12:28:23,862 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:23,864 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:23,868 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-10-16 12:28:23,868 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:23,892 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:23,892 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:23,964 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [89791#(and (< ~i~0 377) (<= ~j~0 13))] [2020-10-16 12:28:23,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:23,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:23,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:23,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:23,965 INFO L87 Difference]: Start difference. First operand 149 states and 361 transitions. Second operand 11 states. [2020-10-16 12:28:24,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:24,502 INFO L93 Difference]: Finished difference Result 249 states and 586 transitions. [2020-10-16 12:28:24,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:24,503 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:24,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:24,504 INFO L225 Difference]: With dead ends: 249 [2020-10-16 12:28:24,504 INFO L226 Difference]: Without dead ends: 244 [2020-10-16 12:28:24,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=229, Invalid=527, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:28:24,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-16 12:28:24,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 146. [2020-10-16 12:28:24,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-16 12:28:24,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 342 transitions. [2020-10-16 12:28:24,508 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 342 transitions. Word has length 14 [2020-10-16 12:28:24,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:24,509 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 342 transitions. [2020-10-16 12:28:24,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:24,509 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 342 transitions. [2020-10-16 12:28:24,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:24,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:24,509 INFO L422 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:24,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,161 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:24,711 INFO L429 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:24,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:24,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1949255125, now seen corresponding path program 7 times [2020-10-16 12:28:24,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:24,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121029901] [2020-10-16 12:28:24,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:24,842 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:24,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121029901] [2020-10-16 12:28:24,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093544637] [2020-10-16 12:28:24,843 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:24,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:28:24,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:25,003 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:25,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-16 12:28:25,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 18 [2020-10-16 12:28:25,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1987608105] [2020-10-16 12:28:25,004 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:25,004 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:25,007 INFO L258 McrAutomatonBuilder]: Finished intersection with 31 states and 46 transitions. [2020-10-16 12:28:25,007 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:25,209 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:25,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:28:25,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:25,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:28:25,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:25,210 INFO L87 Difference]: Start difference. First operand 146 states and 342 transitions. Second operand 9 states. [2020-10-16 12:28:25,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:25,247 INFO L93 Difference]: Finished difference Result 235 states and 626 transitions. [2020-10-16 12:28:25,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:28:25,248 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-10-16 12:28:25,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:25,248 INFO L225 Difference]: With dead ends: 235 [2020-10-16 12:28:25,249 INFO L226 Difference]: Without dead ends: 227 [2020-10-16 12:28:25,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 10 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:25,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-16 12:28:25,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2020-10-16 12:28:25,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-16 12:28:25,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 611 transitions. [2020-10-16 12:28:25,253 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 611 transitions. Word has length 14 [2020-10-16 12:28:25,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:25,254 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 611 transitions. [2020-10-16 12:28:25,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:28:25,254 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 611 transitions. [2020-10-16 12:28:25,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:25,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:25,255 INFO L422 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:25,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,162 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:25,467 INFO L429 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:25,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:25,467 INFO L82 PathProgramCache]: Analyzing trace with hash 163688120, now seen corresponding path program 7 times [2020-10-16 12:28:25,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:25,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119373204] [2020-10-16 12:28:25,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:25,665 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:25,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119373204] [2020-10-16 12:28:25,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217868123] [2020-10-16 12:28:25,666 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:25,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:28:25,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:25,820 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:25,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-16 12:28:25,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 18 [2020-10-16 12:28:25,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [889102093] [2020-10-16 12:28:25,821 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:25,822 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:25,823 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:28:25,823 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:25,926 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:25,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:28:25,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:25,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:28:25,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:25,927 INFO L87 Difference]: Start difference. First operand 227 states and 611 transitions. Second operand 9 states. [2020-10-16 12:28:25,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:25,969 INFO L93 Difference]: Finished difference Result 338 states and 895 transitions. [2020-10-16 12:28:25,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:28:25,970 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-10-16 12:28:25,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:25,970 INFO L225 Difference]: With dead ends: 338 [2020-10-16 12:28:25,970 INFO L226 Difference]: Without dead ends: 312 [2020-10-16 12:28:25,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:25,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-16 12:28:25,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2020-10-16 12:28:25,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-10-16 12:28:25,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 836 transitions. [2020-10-16 12:28:25,975 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 836 transitions. Word has length 14 [2020-10-16 12:28:25,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:25,975 INFO L481 AbstractCegarLoop]: Abstraction has 312 states and 836 transitions. [2020-10-16 12:28:25,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:28:25,976 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 836 transitions. [2020-10-16 12:28:25,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:25,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:25,976 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:26,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2020-10-16 12:28:26,177 INFO L429 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:26,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:26,178 INFO L82 PathProgramCache]: Analyzing trace with hash 491277249, now seen corresponding path program 153 times [2020-10-16 12:28:26,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:26,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463666108] [2020-10-16 12:28:26,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:26,326 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:26,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463666108] [2020-10-16 12:28:26,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161029567] [2020-10-16 12:28:26,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:26,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 12:28:26,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:26,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:26,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:26,621 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:26,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:26,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:26,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [541203068] [2020-10-16 12:28:26,622 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:26,623 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:26,628 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 40 transitions. [2020-10-16 12:28:26,629 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:26,651 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:26,652 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:26,658 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:26,658 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:26,667 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:26,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:26,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:26,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:26,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:26,668 INFO L87 Difference]: Start difference. First operand 312 states and 836 transitions. Second operand 11 states. [2020-10-16 12:28:26,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:26,713 INFO L93 Difference]: Finished difference Result 353 states and 914 transitions. [2020-10-16 12:28:26,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:26,714 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:26,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:26,715 INFO L225 Difference]: With dead ends: 353 [2020-10-16 12:28:26,715 INFO L226 Difference]: Without dead ends: 351 [2020-10-16 12:28:26,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:26,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-10-16 12:28:26,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 324. [2020-10-16 12:28:26,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-10-16 12:28:26,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 870 transitions. [2020-10-16 12:28:26,722 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 870 transitions. Word has length 15 [2020-10-16 12:28:26,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:26,723 INFO L481 AbstractCegarLoop]: Abstraction has 324 states and 870 transitions. [2020-10-16 12:28:26,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:26,723 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 870 transitions. [2020-10-16 12:28:26,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:26,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:26,724 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:26,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2020-10-16 12:28:26,937 INFO L429 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:26,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:26,938 INFO L82 PathProgramCache]: Analyzing trace with hash 491278210, now seen corresponding path program 154 times [2020-10-16 12:28:26,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:26,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341075410] [2020-10-16 12:28:26,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:27,113 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:27,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341075410] [2020-10-16 12:28:27,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926698766] [2020-10-16 12:28:27,114 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:27,155 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:28:27,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:27,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:27,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:27,392 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:27,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:27,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:27,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1252749182] [2020-10-16 12:28:27,393 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:27,394 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:27,398 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-10-16 12:28:27,398 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:27,433 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:27,433 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:27,447 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:27,447 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:27,459 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:27,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:27,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:27,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:27,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:27,460 INFO L87 Difference]: Start difference. First operand 324 states and 870 transitions. Second operand 11 states. [2020-10-16 12:28:27,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:27,588 INFO L93 Difference]: Finished difference Result 377 states and 965 transitions. [2020-10-16 12:28:27,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:27,590 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:27,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:27,591 INFO L225 Difference]: With dead ends: 377 [2020-10-16 12:28:27,592 INFO L226 Difference]: Without dead ends: 374 [2020-10-16 12:28:27,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:28:27,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2020-10-16 12:28:27,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 325. [2020-10-16 12:28:27,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2020-10-16 12:28:27,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 873 transitions. [2020-10-16 12:28:27,603 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 873 transitions. Word has length 15 [2020-10-16 12:28:27,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:27,603 INFO L481 AbstractCegarLoop]: Abstraction has 325 states and 873 transitions. [2020-10-16 12:28:27,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:27,604 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 873 transitions. [2020-10-16 12:28:27,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:27,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:27,605 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:27,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2020-10-16 12:28:27,819 INFO L429 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:27,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:27,819 INFO L82 PathProgramCache]: Analyzing trace with hash 491307040, now seen corresponding path program 155 times [2020-10-16 12:28:27,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:27,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241704155] [2020-10-16 12:28:27,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:28,019 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:28,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241704155] [2020-10-16 12:28:28,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549836932] [2020-10-16 12:28:28,020 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:28,089 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:28:28,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:28,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:28,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:29,244 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:29,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:29,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:29,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1332179733] [2020-10-16 12:28:29,245 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:29,253 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:29,256 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 36 transitions. [2020-10-16 12:28:29,256 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:29,274 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:29,274 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:29,280 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:29,280 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:29,288 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:29,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:29,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:29,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:29,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:29,290 INFO L87 Difference]: Start difference. First operand 325 states and 873 transitions. Second operand 11 states. [2020-10-16 12:28:29,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:29,439 INFO L93 Difference]: Finished difference Result 384 states and 980 transitions. [2020-10-16 12:28:29,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:29,440 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:29,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:29,441 INFO L225 Difference]: With dead ends: 384 [2020-10-16 12:28:29,441 INFO L226 Difference]: Without dead ends: 381 [2020-10-16 12:28:29,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:28:29,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-16 12:28:29,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 326. [2020-10-16 12:28:29,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-10-16 12:28:29,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 876 transitions. [2020-10-16 12:28:29,447 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 876 transitions. Word has length 15 [2020-10-16 12:28:29,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:29,447 INFO L481 AbstractCegarLoop]: Abstraction has 326 states and 876 transitions. [2020-10-16 12:28:29,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:29,448 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 876 transitions. [2020-10-16 12:28:29,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:29,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:29,448 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:29,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 166 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2020-10-16 12:28:29,649 INFO L429 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:29,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:29,650 INFO L82 PathProgramCache]: Analyzing trace with hash 491308001, now seen corresponding path program 156 times [2020-10-16 12:28:29,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:29,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491048734] [2020-10-16 12:28:29,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:29,795 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:29,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491048734] [2020-10-16 12:28:29,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864642343] [2020-10-16 12:28:29,796 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:29,836 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:28:29,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:29,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:29,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:30,081 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:30,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:30,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:30,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1192140950] [2020-10-16 12:28:30,083 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:30,084 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:30,087 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 36 transitions. [2020-10-16 12:28:30,087 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:30,105 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:30,106 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:30,117 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:30,117 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:30,123 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:30,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:30,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:30,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:30,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:30,124 INFO L87 Difference]: Start difference. First operand 326 states and 876 transitions. Second operand 11 states. [2020-10-16 12:28:30,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:30,256 INFO L93 Difference]: Finished difference Result 399 states and 1014 transitions. [2020-10-16 12:28:30,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:30,257 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:30,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:30,258 INFO L225 Difference]: With dead ends: 399 [2020-10-16 12:28:30,258 INFO L226 Difference]: Without dead ends: 395 [2020-10-16 12:28:30,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=134, Invalid=286, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:28:30,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-10-16 12:28:30,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 327. [2020-10-16 12:28:30,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-10-16 12:28:30,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 879 transitions. [2020-10-16 12:28:30,265 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 879 transitions. Word has length 15 [2020-10-16 12:28:30,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:30,265 INFO L481 AbstractCegarLoop]: Abstraction has 327 states and 879 transitions. [2020-10-16 12:28:30,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:30,265 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 879 transitions. [2020-10-16 12:28:30,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:30,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:30,266 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:30,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170,167 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:30,478 INFO L429 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:30,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:30,478 INFO L82 PathProgramCache]: Analyzing trace with hash 492200770, now seen corresponding path program 157 times [2020-10-16 12:28:30,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:30,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416834586] [2020-10-16 12:28:30,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:30,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:30,616 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:30,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416834586] [2020-10-16 12:28:30,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747269643] [2020-10-16 12:28:30,617 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:30,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:30,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:32,090 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:32,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:32,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:32,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2064919134] [2020-10-16 12:28:32,091 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:32,092 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:32,094 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-10-16 12:28:32,094 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:32,102 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:32,102 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:32,119 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:32,120 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:32,128 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:32,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:32,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:32,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:32,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:32,129 INFO L87 Difference]: Start difference. First operand 327 states and 879 transitions. Second operand 11 states. [2020-10-16 12:28:32,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:32,315 INFO L93 Difference]: Finished difference Result 388 states and 990 transitions. [2020-10-16 12:28:32,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:32,316 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:32,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:32,317 INFO L225 Difference]: With dead ends: 388 [2020-10-16 12:28:32,317 INFO L226 Difference]: Without dead ends: 385 [2020-10-16 12:28:32,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:28:32,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-10-16 12:28:32,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 329. [2020-10-16 12:28:32,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-10-16 12:28:32,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 885 transitions. [2020-10-16 12:28:32,323 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 885 transitions. Word has length 15 [2020-10-16 12:28:32,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:32,323 INFO L481 AbstractCegarLoop]: Abstraction has 329 states and 885 transitions. [2020-10-16 12:28:32,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:32,323 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 885 transitions. [2020-10-16 12:28:32,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:32,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:32,323 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:32,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,168 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:32,524 INFO L429 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:32,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:32,525 INFO L82 PathProgramCache]: Analyzing trace with hash 492201731, now seen corresponding path program 158 times [2020-10-16 12:28:32,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:32,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994545287] [2020-10-16 12:28:32,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:32,664 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:32,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994545287] [2020-10-16 12:28:32,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422782872] [2020-10-16 12:28:32,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:32,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:28:32,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:32,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:32,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:33,555 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:33,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:33,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:33,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1091992436] [2020-10-16 12:28:33,556 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:33,557 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:33,559 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-10-16 12:28:33,559 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:33,566 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:33,567 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:33,583 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:33,584 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:33,590 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:33,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:33,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:33,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:33,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:33,591 INFO L87 Difference]: Start difference. First operand 329 states and 885 transitions. Second operand 11 states. [2020-10-16 12:28:33,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:33,797 INFO L93 Difference]: Finished difference Result 406 states and 1029 transitions. [2020-10-16 12:28:33,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:33,798 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:33,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:33,799 INFO L225 Difference]: With dead ends: 406 [2020-10-16 12:28:33,799 INFO L226 Difference]: Without dead ends: 402 [2020-10-16 12:28:33,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:28:33,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-10-16 12:28:33,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 328. [2020-10-16 12:28:33,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-10-16 12:28:33,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 882 transitions. [2020-10-16 12:28:33,805 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 882 transitions. Word has length 15 [2020-10-16 12:28:33,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:33,805 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 882 transitions. [2020-10-16 12:28:33,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:33,805 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 882 transitions. [2020-10-16 12:28:33,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:33,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:33,806 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:34,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 169 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable172 [2020-10-16 12:28:34,007 INFO L429 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:34,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:34,007 INFO L82 PathProgramCache]: Analyzing trace with hash 492230561, now seen corresponding path program 159 times [2020-10-16 12:28:34,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:34,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500214104] [2020-10-16 12:28:34,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:34,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:34,162 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:34,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500214104] [2020-10-16 12:28:34,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94702261] [2020-10-16 12:28:34,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:34,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:28:34,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:34,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:34,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:34,556 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:34,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:34,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:34,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1659052986] [2020-10-16 12:28:34,557 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:34,558 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:34,561 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-10-16 12:28:34,561 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:34,570 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:34,570 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:34,587 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:34,587 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:34,595 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:34,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:34,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:34,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:34,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:34,597 INFO L87 Difference]: Start difference. First operand 328 states and 882 transitions. Second operand 11 states. [2020-10-16 12:28:34,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:34,786 INFO L93 Difference]: Finished difference Result 410 states and 1039 transitions. [2020-10-16 12:28:34,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:34,787 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:34,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:34,788 INFO L225 Difference]: With dead ends: 410 [2020-10-16 12:28:34,788 INFO L226 Difference]: Without dead ends: 406 [2020-10-16 12:28:34,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:28:34,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2020-10-16 12:28:34,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 329. [2020-10-16 12:28:34,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-10-16 12:28:34,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 885 transitions. [2020-10-16 12:28:34,794 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 885 transitions. Word has length 15 [2020-10-16 12:28:34,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:34,794 INFO L481 AbstractCegarLoop]: Abstraction has 329 states and 885 transitions. [2020-10-16 12:28:34,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:34,795 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 885 transitions. [2020-10-16 12:28:34,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:34,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:34,795 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:34,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,170 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:34,996 INFO L429 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:34,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:34,997 INFO L82 PathProgramCache]: Analyzing trace with hash 492231522, now seen corresponding path program 160 times [2020-10-16 12:28:34,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:34,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544834576] [2020-10-16 12:28:34,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:35,165 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:35,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544834576] [2020-10-16 12:28:35,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427781371] [2020-10-16 12:28:35,166 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:35,240 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:28:35,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:35,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:35,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:35,610 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:35,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:35,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:35,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1959713049] [2020-10-16 12:28:35,611 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:35,613 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:35,618 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-10-16 12:28:35,619 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:35,634 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:35,635 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:35,659 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:35,659 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:35,670 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:35,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:35,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:35,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:35,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:35,672 INFO L87 Difference]: Start difference. First operand 329 states and 885 transitions. Second operand 11 states. [2020-10-16 12:28:35,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:35,939 INFO L93 Difference]: Finished difference Result 419 states and 1063 transitions. [2020-10-16 12:28:35,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:35,941 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:35,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:35,943 INFO L225 Difference]: With dead ends: 419 [2020-10-16 12:28:35,943 INFO L226 Difference]: Without dead ends: 414 [2020-10-16 12:28:35,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:28:35,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2020-10-16 12:28:35,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 330. [2020-10-16 12:28:35,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-10-16 12:28:35,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 888 transitions. [2020-10-16 12:28:35,953 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 888 transitions. Word has length 15 [2020-10-16 12:28:35,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:35,954 INFO L481 AbstractCegarLoop]: Abstraction has 330 states and 888 transitions. [2020-10-16 12:28:35,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:35,954 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 888 transitions. [2020-10-16 12:28:35,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:35,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:35,960 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:36,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,171 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:36,162 INFO L429 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:36,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:36,163 INFO L82 PathProgramCache]: Analyzing trace with hash 519906400, now seen corresponding path program 161 times [2020-10-16 12:28:36,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:36,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406903030] [2020-10-16 12:28:36,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:36,309 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:36,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406903030] [2020-10-16 12:28:36,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735767470] [2020-10-16 12:28:36,310 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:36,350 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:28:36,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:36,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:36,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:36,638 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:36,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:36,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:36,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2044060489] [2020-10-16 12:28:36,639 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:36,640 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:36,643 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:28:36,643 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:36,650 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:36,650 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:36,664 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:36,665 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:36,673 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:36,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:36,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:36,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:36,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:36,674 INFO L87 Difference]: Start difference. First operand 330 states and 888 transitions. Second operand 11 states. [2020-10-16 12:28:36,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:36,922 INFO L93 Difference]: Finished difference Result 391 states and 997 transitions. [2020-10-16 12:28:36,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:36,923 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:36,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:36,923 INFO L225 Difference]: With dead ends: 391 [2020-10-16 12:28:36,924 INFO L226 Difference]: Without dead ends: 388 [2020-10-16 12:28:36,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:28:36,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2020-10-16 12:28:36,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 333. [2020-10-16 12:28:36,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2020-10-16 12:28:36,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 897 transitions. [2020-10-16 12:28:36,932 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 897 transitions. Word has length 15 [2020-10-16 12:28:36,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:36,932 INFO L481 AbstractCegarLoop]: Abstraction has 333 states and 897 transitions. [2020-10-16 12:28:36,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:36,932 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 897 transitions. [2020-10-16 12:28:36,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:36,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:36,933 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:37,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,172 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:37,147 INFO L429 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:37,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:37,147 INFO L82 PathProgramCache]: Analyzing trace with hash 519907361, now seen corresponding path program 162 times [2020-10-16 12:28:37,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:37,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76049713] [2020-10-16 12:28:37,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:37,284 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:37,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76049713] [2020-10-16 12:28:37,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412105612] [2020-10-16 12:28:37,285 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:37,326 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:28:37,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:37,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:37,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:37,741 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:37,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:37,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:37,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2145292786] [2020-10-16 12:28:37,742 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:37,745 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:37,749 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:28:37,750 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:37,759 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:37,760 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:37,783 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:37,784 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:37,795 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:37,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:37,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:37,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:37,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:37,796 INFO L87 Difference]: Start difference. First operand 333 states and 897 transitions. Second operand 11 states. [2020-10-16 12:28:38,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:38,089 INFO L93 Difference]: Finished difference Result 412 states and 1045 transitions. [2020-10-16 12:28:38,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:38,090 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:38,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:38,091 INFO L225 Difference]: With dead ends: 412 [2020-10-16 12:28:38,092 INFO L226 Difference]: Without dead ends: 408 [2020-10-16 12:28:38,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:28:38,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2020-10-16 12:28:38,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 332. [2020-10-16 12:28:38,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-10-16 12:28:38,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 894 transitions. [2020-10-16 12:28:38,099 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 894 transitions. Word has length 15 [2020-10-16 12:28:38,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:38,099 INFO L481 AbstractCegarLoop]: Abstraction has 332 states and 894 transitions. [2020-10-16 12:28:38,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:38,100 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 894 transitions. [2020-10-16 12:28:38,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:38,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:38,100 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:38,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,173 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:38,301 INFO L429 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:38,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:38,302 INFO L82 PathProgramCache]: Analyzing trace with hash 519936191, now seen corresponding path program 163 times [2020-10-16 12:28:38,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:38,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792210745] [2020-10-16 12:28:38,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:38,489 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:38,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792210745] [2020-10-16 12:28:38,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429527132] [2020-10-16 12:28:38,490 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:38,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:38,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:43,802 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:43,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:43,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:43,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1946865616] [2020-10-16 12:28:43,803 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:43,804 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:43,808 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:28:43,808 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:43,817 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:43,818 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:43,835 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:43,835 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:43,848 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:43,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:43,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:43,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:43,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=236, Unknown=1, NotChecked=0, Total=342 [2020-10-16 12:28:43,849 INFO L87 Difference]: Start difference. First operand 332 states and 894 transitions. Second operand 11 states. [2020-10-16 12:28:44,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:44,110 INFO L93 Difference]: Finished difference Result 413 states and 1048 transitions. [2020-10-16 12:28:44,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:44,110 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:44,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:44,111 INFO L225 Difference]: With dead ends: 413 [2020-10-16 12:28:44,112 INFO L226 Difference]: Without dead ends: 409 [2020-10-16 12:28:44,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=163, Invalid=342, Unknown=1, NotChecked=0, Total=506 [2020-10-16 12:28:44,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-10-16 12:28:44,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 333. [2020-10-16 12:28:44,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2020-10-16 12:28:44,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 897 transitions. [2020-10-16 12:28:44,116 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 897 transitions. Word has length 15 [2020-10-16 12:28:44,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:44,117 INFO L481 AbstractCegarLoop]: Abstraction has 333 states and 897 transitions. [2020-10-16 12:28:44,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:44,117 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 897 transitions. [2020-10-16 12:28:44,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:44,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:44,117 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:44,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177,174 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:44,318 INFO L429 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:44,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:44,319 INFO L82 PathProgramCache]: Analyzing trace with hash 519937152, now seen corresponding path program 164 times [2020-10-16 12:28:44,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:44,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820548772] [2020-10-16 12:28:44,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:44,505 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:44,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820548772] [2020-10-16 12:28:44,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879155318] [2020-10-16 12:28:44,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:44,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:28:44,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:44,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:44,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:48,645 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:48,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:48,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:48,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1922615964] [2020-10-16 12:28:48,646 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:48,648 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:48,650 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:28:48,651 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:48,658 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:48,658 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:48,672 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:48,673 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:48,682 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:48,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:48,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:48,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:48,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=241, Unknown=1, NotChecked=0, Total=342 [2020-10-16 12:28:48,683 INFO L87 Difference]: Start difference. First operand 333 states and 897 transitions. Second operand 11 states. [2020-10-16 12:28:48,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:48,955 INFO L93 Difference]: Finished difference Result 426 states and 1078 transitions. [2020-10-16 12:28:48,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:48,956 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:48,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:48,957 INFO L225 Difference]: With dead ends: 426 [2020-10-16 12:28:48,957 INFO L226 Difference]: Without dead ends: 421 [2020-10-16 12:28:48,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=162, Invalid=343, Unknown=1, NotChecked=0, Total=506 [2020-10-16 12:28:48,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-10-16 12:28:48,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 331. [2020-10-16 12:28:48,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-10-16 12:28:48,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 891 transitions. [2020-10-16 12:28:48,963 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 891 transitions. Word has length 15 [2020-10-16 12:28:48,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:48,963 INFO L481 AbstractCegarLoop]: Abstraction has 331 states and 891 transitions. [2020-10-16 12:28:48,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:48,963 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 891 transitions. [2020-10-16 12:28:48,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:48,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:48,964 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:49,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable178 [2020-10-16 12:28:49,165 INFO L429 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:49,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:49,165 INFO L82 PathProgramCache]: Analyzing trace with hash 520829921, now seen corresponding path program 165 times [2020-10-16 12:28:49,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:49,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567437467] [2020-10-16 12:28:49,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:49,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:49,309 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:49,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567437467] [2020-10-16 12:28:49,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068990795] [2020-10-16 12:28:49,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:49,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 12:28:49,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:49,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:49,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:50,554 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:50,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:50,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:50,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1132114588] [2020-10-16 12:28:50,555 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:50,556 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:50,558 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:28:50,558 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:50,563 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:50,564 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:50,579 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:50,579 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:50,585 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:50,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:50,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:50,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:50,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:50,587 INFO L87 Difference]: Start difference. First operand 331 states and 891 transitions. Second operand 11 states. [2020-10-16 12:28:50,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:50,837 INFO L93 Difference]: Finished difference Result 415 states and 1054 transitions. [2020-10-16 12:28:50,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:28:50,838 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:50,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:50,839 INFO L225 Difference]: With dead ends: 415 [2020-10-16 12:28:50,839 INFO L226 Difference]: Without dead ends: 411 [2020-10-16 12:28:50,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:28:50,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-10-16 12:28:50,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 333. [2020-10-16 12:28:50,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2020-10-16 12:28:50,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 897 transitions. [2020-10-16 12:28:50,844 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 897 transitions. Word has length 15 [2020-10-16 12:28:50,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:50,844 INFO L481 AbstractCegarLoop]: Abstraction has 333 states and 897 transitions. [2020-10-16 12:28:50,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:50,844 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 897 transitions. [2020-10-16 12:28:50,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:50,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:50,845 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:51,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2020-10-16 12:28:51,046 INFO L429 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:51,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:51,046 INFO L82 PathProgramCache]: Analyzing trace with hash 520830882, now seen corresponding path program 166 times [2020-10-16 12:28:51,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:51,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081308338] [2020-10-16 12:28:51,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:51,196 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:51,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081308338] [2020-10-16 12:28:51,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020024901] [2020-10-16 12:28:51,197 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:51,236 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:28:51,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:51,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:51,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:51,567 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:51,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:51,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:51,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1596778270] [2020-10-16 12:28:51,568 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:51,569 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:51,571 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:28:51,572 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:51,577 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:51,577 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:51,593 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:51,593 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:51,601 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:51,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:51,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:51,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:51,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:51,602 INFO L87 Difference]: Start difference. First operand 333 states and 897 transitions. Second operand 11 states. [2020-10-16 12:28:51,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:51,857 INFO L93 Difference]: Finished difference Result 432 states and 1094 transitions. [2020-10-16 12:28:51,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:51,858 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:51,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:51,859 INFO L225 Difference]: With dead ends: 432 [2020-10-16 12:28:51,859 INFO L226 Difference]: Without dead ends: 427 [2020-10-16 12:28:51,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:28:51,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-10-16 12:28:51,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 332. [2020-10-16 12:28:51,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-10-16 12:28:51,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 894 transitions. [2020-10-16 12:28:51,864 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 894 transitions. Word has length 15 [2020-10-16 12:28:51,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:51,864 INFO L481 AbstractCegarLoop]: Abstraction has 332 states and 894 transitions. [2020-10-16 12:28:51,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:51,865 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 894 transitions. [2020-10-16 12:28:51,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:51,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:51,865 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:52,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,177 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:52,070 INFO L429 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:52,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:52,070 INFO L82 PathProgramCache]: Analyzing trace with hash 520859712, now seen corresponding path program 167 times [2020-10-16 12:28:52,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:52,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689386574] [2020-10-16 12:28:52,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:52,227 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:52,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689386574] [2020-10-16 12:28:52,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163511601] [2020-10-16 12:28:52,228 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:52,269 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:28:52,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:52,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:52,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:53,145 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:53,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:53,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:53,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2067554212] [2020-10-16 12:28:53,146 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:53,147 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:53,149 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:28:53,149 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:53,155 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:53,155 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:53,171 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:53,172 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:53,183 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:53,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:53,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:53,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:53,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:53,185 INFO L87 Difference]: Start difference. First operand 332 states and 894 transitions. Second operand 11 states. [2020-10-16 12:28:53,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:53,412 INFO L93 Difference]: Finished difference Result 432 states and 1094 transitions. [2020-10-16 12:28:53,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:53,413 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:53,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:53,414 INFO L225 Difference]: With dead ends: 432 [2020-10-16 12:28:53,414 INFO L226 Difference]: Without dead ends: 427 [2020-10-16 12:28:53,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:28:53,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-10-16 12:28:53,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 333. [2020-10-16 12:28:53,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2020-10-16 12:28:53,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 897 transitions. [2020-10-16 12:28:53,420 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 897 transitions. Word has length 15 [2020-10-16 12:28:53,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:53,420 INFO L481 AbstractCegarLoop]: Abstraction has 333 states and 897 transitions. [2020-10-16 12:28:53,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:53,420 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 897 transitions. [2020-10-16 12:28:53,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:53,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:53,421 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:53,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 178 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable181 [2020-10-16 12:28:53,622 INFO L429 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:53,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:53,623 INFO L82 PathProgramCache]: Analyzing trace with hash 520860673, now seen corresponding path program 168 times [2020-10-16 12:28:53,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:53,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610589456] [2020-10-16 12:28:53,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:53,771 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:53,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610589456] [2020-10-16 12:28:53,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668527952] [2020-10-16 12:28:53,772 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:53,814 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:28:53,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:53,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:53,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:54,074 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:54,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:54,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:54,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2115091658] [2020-10-16 12:28:54,074 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:54,075 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:54,077 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:28:54,077 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:54,085 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:54,085 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:54,102 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:54,103 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:54,108 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:54,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:54,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:54,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:54,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:54,110 INFO L87 Difference]: Start difference. First operand 333 states and 897 transitions. Second operand 11 states. [2020-10-16 12:28:54,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:54,347 INFO L93 Difference]: Finished difference Result 434 states and 1103 transitions. [2020-10-16 12:28:54,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:54,349 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:54,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:54,350 INFO L225 Difference]: With dead ends: 434 [2020-10-16 12:28:54,350 INFO L226 Difference]: Without dead ends: 428 [2020-10-16 12:28:54,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:28:54,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2020-10-16 12:28:54,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 334. [2020-10-16 12:28:54,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-10-16 12:28:54,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 900 transitions. [2020-10-16 12:28:54,356 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 900 transitions. Word has length 15 [2020-10-16 12:28:54,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:54,356 INFO L481 AbstractCegarLoop]: Abstraction has 334 states and 900 transitions. [2020-10-16 12:28:54,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:54,356 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 900 transitions. [2020-10-16 12:28:54,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:54,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:54,357 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:54,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,179 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:54,558 INFO L429 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:54,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:54,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1378780930, now seen corresponding path program 169 times [2020-10-16 12:28:54,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:54,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609722509] [2020-10-16 12:28:54,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:54,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:54,692 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:54,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609722509] [2020-10-16 12:28:54,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826121370] [2020-10-16 12:28:54,693 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:54,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:54,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:54,982 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:54,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:54,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:54,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [382526140] [2020-10-16 12:28:54,983 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:54,984 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:54,987 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:28:54,987 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:54,997 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:54,997 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:55,006 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:55,007 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:55,015 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:55,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:55,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:55,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:55,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:55,016 INFO L87 Difference]: Start difference. First operand 334 states and 900 transitions. Second operand 11 states. [2020-10-16 12:28:55,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:55,275 INFO L93 Difference]: Finished difference Result 391 states and 999 transitions. [2020-10-16 12:28:55,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:55,276 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:55,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:55,276 INFO L225 Difference]: With dead ends: 391 [2020-10-16 12:28:55,276 INFO L226 Difference]: Without dead ends: 388 [2020-10-16 12:28:55,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:28:55,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2020-10-16 12:28:55,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 338. [2020-10-16 12:28:55,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-10-16 12:28:55,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 912 transitions. [2020-10-16 12:28:55,282 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 912 transitions. Word has length 15 [2020-10-16 12:28:55,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:55,282 INFO L481 AbstractCegarLoop]: Abstraction has 338 states and 912 transitions. [2020-10-16 12:28:55,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:55,282 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 912 transitions. [2020-10-16 12:28:55,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:55,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:55,283 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:55,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,180 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:55,484 INFO L429 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:55,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:55,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1378781891, now seen corresponding path program 170 times [2020-10-16 12:28:55,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:55,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569686358] [2020-10-16 12:28:55,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:55,637 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:55,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569686358] [2020-10-16 12:28:55,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034032522] [2020-10-16 12:28:55,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:55,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:28:55,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:55,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:55,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:55,990 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:55,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:55,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:55,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [205661141] [2020-10-16 12:28:55,992 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:55,993 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:55,995 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:28:55,995 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:56,007 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:56,007 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:56,018 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:56,018 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:56,027 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:56,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:56,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:56,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:56,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:56,028 INFO L87 Difference]: Start difference. First operand 338 states and 912 transitions. Second operand 11 states. [2020-10-16 12:28:56,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:56,324 INFO L93 Difference]: Finished difference Result 417 states and 1058 transitions. [2020-10-16 12:28:56,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:56,325 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:56,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:56,325 INFO L225 Difference]: With dead ends: 417 [2020-10-16 12:28:56,326 INFO L226 Difference]: Without dead ends: 413 [2020-10-16 12:28:56,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:28:56,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-10-16 12:28:56,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 337. [2020-10-16 12:28:56,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-16 12:28:56,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 909 transitions. [2020-10-16 12:28:56,331 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 909 transitions. Word has length 15 [2020-10-16 12:28:56,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:56,331 INFO L481 AbstractCegarLoop]: Abstraction has 337 states and 909 transitions. [2020-10-16 12:28:56,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:56,331 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 909 transitions. [2020-10-16 12:28:56,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:56,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:56,332 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:56,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,181 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:56,533 INFO L429 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:56,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:56,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1378810721, now seen corresponding path program 171 times [2020-10-16 12:28:56,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:56,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069141553] [2020-10-16 12:28:56,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:56,674 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:56,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069141553] [2020-10-16 12:28:56,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400480020] [2020-10-16 12:28:56,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:56,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 12:28:56,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:56,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:56,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:57,067 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:57,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:57,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:57,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1030898810] [2020-10-16 12:28:57,068 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:57,068 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:57,071 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:28:57,071 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:57,082 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:57,082 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:57,102 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:57,102 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:57,109 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:57,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:57,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:57,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:57,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:57,110 INFO L87 Difference]: Start difference. First operand 337 states and 909 transitions. Second operand 11 states. [2020-10-16 12:28:57,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:57,398 INFO L93 Difference]: Finished difference Result 419 states and 1064 transitions. [2020-10-16 12:28:57,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:57,398 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:57,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:57,399 INFO L225 Difference]: With dead ends: 419 [2020-10-16 12:28:57,399 INFO L226 Difference]: Without dead ends: 415 [2020-10-16 12:28:57,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:28:57,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2020-10-16 12:28:57,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 338. [2020-10-16 12:28:57,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-10-16 12:28:57,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 912 transitions. [2020-10-16 12:28:57,407 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 912 transitions. Word has length 15 [2020-10-16 12:28:57,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:57,407 INFO L481 AbstractCegarLoop]: Abstraction has 338 states and 912 transitions. [2020-10-16 12:28:57,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:57,407 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 912 transitions. [2020-10-16 12:28:57,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:57,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:57,408 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:57,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,182 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:57,609 INFO L429 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:57,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:57,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1378811682, now seen corresponding path program 172 times [2020-10-16 12:28:57,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:57,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743276935] [2020-10-16 12:28:57,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:57,755 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:57,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743276935] [2020-10-16 12:28:57,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556216470] [2020-10-16 12:28:57,755 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:57,797 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:28:57,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:57,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:57,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:58,050 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:58,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:58,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:58,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1895343104] [2020-10-16 12:28:58,051 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:58,051 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:58,054 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:28:58,054 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:58,064 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:58,065 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:58,073 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:58,073 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:58,082 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:58,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:58,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:58,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:58,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:58,084 INFO L87 Difference]: Start difference. First operand 338 states and 912 transitions. Second operand 11 states. [2020-10-16 12:28:58,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:58,371 INFO L93 Difference]: Finished difference Result 435 states and 1101 transitions. [2020-10-16 12:28:58,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:58,371 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:58,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:58,372 INFO L225 Difference]: With dead ends: 435 [2020-10-16 12:28:58,372 INFO L226 Difference]: Without dead ends: 430 [2020-10-16 12:28:58,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:28:58,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-10-16 12:28:58,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 336. [2020-10-16 12:28:58,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-10-16 12:28:58,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 906 transitions. [2020-10-16 12:28:58,378 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 906 transitions. Word has length 15 [2020-10-16 12:28:58,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:58,378 INFO L481 AbstractCegarLoop]: Abstraction has 336 states and 906 transitions. [2020-10-16 12:28:58,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:58,378 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 906 transitions. [2020-10-16 12:28:58,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:58,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:58,379 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:58,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 183 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable186 [2020-10-16 12:28:58,580 INFO L429 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:58,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:58,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1379704451, now seen corresponding path program 173 times [2020-10-16 12:28:58,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:58,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697216020] [2020-10-16 12:28:58,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:58,732 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:58,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697216020] [2020-10-16 12:28:58,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825120988] [2020-10-16 12:28:58,733 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:58,773 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:28:58,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:58,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:58,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:59,010 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:59,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:59,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:28:59,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [827684799] [2020-10-16 12:28:59,011 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:59,012 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:59,015 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:28:59,015 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:59,025 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:59,026 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:59,044 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:28:59,045 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:59,056 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:59,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:59,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:59,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:59,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:59,057 INFO L87 Difference]: Start difference. First operand 336 states and 906 transitions. Second operand 11 states. [2020-10-16 12:28:59,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:59,400 INFO L93 Difference]: Finished difference Result 418 states and 1063 transitions. [2020-10-16 12:28:59,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:28:59,402 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:28:59,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:59,403 INFO L225 Difference]: With dead ends: 418 [2020-10-16 12:28:59,403 INFO L226 Difference]: Without dead ends: 414 [2020-10-16 12:28:59,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:28:59,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2020-10-16 12:28:59,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 338. [2020-10-16 12:28:59,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-10-16 12:28:59,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 912 transitions. [2020-10-16 12:28:59,413 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 912 transitions. Word has length 15 [2020-10-16 12:28:59,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:59,414 INFO L481 AbstractCegarLoop]: Abstraction has 338 states and 912 transitions. [2020-10-16 12:28:59,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:59,414 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 912 transitions. [2020-10-16 12:28:59,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:28:59,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:59,415 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:59,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,184 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:59,629 INFO L429 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:59,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:59,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1379705412, now seen corresponding path program 174 times [2020-10-16 12:28:59,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:59,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417373641] [2020-10-16 12:28:59,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:59,798 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:59,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417373641] [2020-10-16 12:28:59,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836142815] [2020-10-16 12:28:59,799 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:59,842 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:28:59,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:59,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:59,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:00,084 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:00,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:00,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:00,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1178651473] [2020-10-16 12:29:00,086 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:00,087 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:00,089 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:00,089 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:00,099 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:00,100 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:00,109 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:00,109 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:00,118 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:00,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:00,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:00,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:00,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:00,119 INFO L87 Difference]: Start difference. First operand 338 states and 912 transitions. Second operand 11 states. [2020-10-16 12:29:00,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:00,389 INFO L93 Difference]: Finished difference Result 435 states and 1103 transitions. [2020-10-16 12:29:00,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:00,390 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:00,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:00,390 INFO L225 Difference]: With dead ends: 435 [2020-10-16 12:29:00,391 INFO L226 Difference]: Without dead ends: 430 [2020-10-16 12:29:00,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:29:00,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-10-16 12:29:00,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 337. [2020-10-16 12:29:00,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-16 12:29:00,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 909 transitions. [2020-10-16 12:29:00,397 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 909 transitions. Word has length 15 [2020-10-16 12:29:00,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:00,397 INFO L481 AbstractCegarLoop]: Abstraction has 337 states and 909 transitions. [2020-10-16 12:29:00,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:00,397 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 909 transitions. [2020-10-16 12:29:00,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:00,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:00,397 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:00,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188 [2020-10-16 12:29:00,598 INFO L429 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:00,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:00,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1379734242, now seen corresponding path program 175 times [2020-10-16 12:29:00,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:00,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110094563] [2020-10-16 12:29:00,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:00,740 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:00,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110094563] [2020-10-16 12:29:00,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794905717] [2020-10-16 12:29:00,741 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:00,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:00,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:01,027 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:01,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:01,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:01,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [942226185] [2020-10-16 12:29:01,028 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:01,029 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:01,031 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:01,032 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:01,043 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:01,044 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:01,054 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:01,055 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:01,063 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:01,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:01,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:01,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:01,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:01,064 INFO L87 Difference]: Start difference. First operand 337 states and 909 transitions. Second operand 11 states. [2020-10-16 12:29:01,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:01,349 INFO L93 Difference]: Finished difference Result 438 states and 1110 transitions. [2020-10-16 12:29:01,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:01,349 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:01,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:01,350 INFO L225 Difference]: With dead ends: 438 [2020-10-16 12:29:01,350 INFO L226 Difference]: Without dead ends: 433 [2020-10-16 12:29:01,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=182, Invalid=418, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:01,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2020-10-16 12:29:01,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 338. [2020-10-16 12:29:01,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-10-16 12:29:01,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 912 transitions. [2020-10-16 12:29:01,356 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 912 transitions. Word has length 15 [2020-10-16 12:29:01,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:01,356 INFO L481 AbstractCegarLoop]: Abstraction has 338 states and 912 transitions. [2020-10-16 12:29:01,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:01,356 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 912 transitions. [2020-10-16 12:29:01,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:01,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:01,357 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:01,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 186 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2020-10-16 12:29:01,558 INFO L429 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:01,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:01,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1379735203, now seen corresponding path program 176 times [2020-10-16 12:29:01,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:01,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440044753] [2020-10-16 12:29:01,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:01,699 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:01,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440044753] [2020-10-16 12:29:01,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86851807] [2020-10-16 12:29:01,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:01,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:29:01,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:01,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:01,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:01,975 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:01,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:01,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:01,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [123851283] [2020-10-16 12:29:01,976 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:01,977 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:01,979 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:01,979 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:01,990 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:01,991 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:02,001 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:02,002 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:02,008 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:02,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:02,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:02,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:02,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:02,009 INFO L87 Difference]: Start difference. First operand 338 states and 912 transitions. Second operand 11 states. [2020-10-16 12:29:02,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:02,274 INFO L93 Difference]: Finished difference Result 443 states and 1122 transitions. [2020-10-16 12:29:02,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:02,275 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:02,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:02,276 INFO L225 Difference]: With dead ends: 443 [2020-10-16 12:29:02,276 INFO L226 Difference]: Without dead ends: 437 [2020-10-16 12:29:02,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=382, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:29:02,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-10-16 12:29:02,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 335. [2020-10-16 12:29:02,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-10-16 12:29:02,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 903 transitions. [2020-10-16 12:29:02,281 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 903 transitions. Word has length 15 [2020-10-16 12:29:02,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:02,281 INFO L481 AbstractCegarLoop]: Abstraction has 335 states and 903 transitions. [2020-10-16 12:29:02,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:02,281 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 903 transitions. [2020-10-16 12:29:02,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:02,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:02,281 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:02,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190,187 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:02,483 INFO L429 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:02,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:02,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1407410081, now seen corresponding path program 177 times [2020-10-16 12:29:02,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:02,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551631541] [2020-10-16 12:29:02,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:02,630 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:02,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551631541] [2020-10-16 12:29:02,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24755228] [2020-10-16 12:29:02,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:02,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:29:02,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:02,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:02,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:02,967 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:02,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:02,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:02,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [414518693] [2020-10-16 12:29:02,968 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:02,969 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:02,971 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:02,971 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:02,982 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:02,982 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:02,991 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:02,992 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:02,998 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:02,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:02,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:02,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:02,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:02,999 INFO L87 Difference]: Start difference. First operand 335 states and 903 transitions. Second operand 11 states. [2020-10-16 12:29:03,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:03,331 INFO L93 Difference]: Finished difference Result 415 states and 1058 transitions. [2020-10-16 12:29:03,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:29:03,332 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:03,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:03,333 INFO L225 Difference]: With dead ends: 415 [2020-10-16 12:29:03,334 INFO L226 Difference]: Without dead ends: 411 [2020-10-16 12:29:03,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:29:03,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-10-16 12:29:03,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 338. [2020-10-16 12:29:03,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-10-16 12:29:03,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 912 transitions. [2020-10-16 12:29:03,339 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 912 transitions. Word has length 15 [2020-10-16 12:29:03,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:03,339 INFO L481 AbstractCegarLoop]: Abstraction has 338 states and 912 transitions. [2020-10-16 12:29:03,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:03,340 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 912 transitions. [2020-10-16 12:29:03,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:03,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:03,340 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:03,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191,188 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:03,541 INFO L429 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:03,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:03,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1407411042, now seen corresponding path program 178 times [2020-10-16 12:29:03,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:03,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444255644] [2020-10-16 12:29:03,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:03,679 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:03,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444255644] [2020-10-16 12:29:03,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736733554] [2020-10-16 12:29:03,680 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:03,722 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:29:03,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:03,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:03,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:04,043 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:04,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:04,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:04,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [719989862] [2020-10-16 12:29:04,044 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:04,044 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:04,046 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:04,047 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:04,057 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:04,057 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:04,065 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:04,065 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:04,074 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:04,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:04,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:04,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:04,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:04,075 INFO L87 Difference]: Start difference. First operand 338 states and 912 transitions. Second operand 11 states. [2020-10-16 12:29:04,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:04,401 INFO L93 Difference]: Finished difference Result 435 states and 1105 transitions. [2020-10-16 12:29:04,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:04,402 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:04,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:04,402 INFO L225 Difference]: With dead ends: 435 [2020-10-16 12:29:04,403 INFO L226 Difference]: Without dead ends: 430 [2020-10-16 12:29:04,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:04,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-10-16 12:29:04,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 337. [2020-10-16 12:29:04,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-16 12:29:04,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 909 transitions. [2020-10-16 12:29:04,418 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 909 transitions. Word has length 15 [2020-10-16 12:29:04,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:04,418 INFO L481 AbstractCegarLoop]: Abstraction has 337 states and 909 transitions. [2020-10-16 12:29:04,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:04,418 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 909 transitions. [2020-10-16 12:29:04,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:04,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:04,419 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:04,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,189 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:04,620 INFO L429 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:04,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:04,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1407439872, now seen corresponding path program 179 times [2020-10-16 12:29:04,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:04,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573017932] [2020-10-16 12:29:04,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:04,775 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:04,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573017932] [2020-10-16 12:29:04,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330980776] [2020-10-16 12:29:04,776 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:04,826 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:29:04,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:04,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:04,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:10,564 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:10,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:10,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:10,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [605395434] [2020-10-16 12:29:10,565 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:10,565 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:10,568 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:10,568 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:10,580 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:10,580 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:10,589 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:10,590 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:10,598 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:10,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:10,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:10,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:10,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=243, Unknown=2, NotChecked=0, Total=342 [2020-10-16 12:29:10,599 INFO L87 Difference]: Start difference. First operand 337 states and 909 transitions. Second operand 11 states. [2020-10-16 12:29:10,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:10,900 INFO L93 Difference]: Finished difference Result 431 states and 1099 transitions. [2020-10-16 12:29:10,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:10,901 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:10,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:10,902 INFO L225 Difference]: With dead ends: 431 [2020-10-16 12:29:10,902 INFO L226 Difference]: Without dead ends: 426 [2020-10-16 12:29:10,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=164, Invalid=386, Unknown=2, NotChecked=0, Total=552 [2020-10-16 12:29:10,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-10-16 12:29:10,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 338. [2020-10-16 12:29:10,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-10-16 12:29:10,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 912 transitions. [2020-10-16 12:29:10,906 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 912 transitions. Word has length 15 [2020-10-16 12:29:10,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:10,907 INFO L481 AbstractCegarLoop]: Abstraction has 338 states and 912 transitions. [2020-10-16 12:29:10,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:10,907 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 912 transitions. [2020-10-16 12:29:10,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:10,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:10,907 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:11,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable193 [2020-10-16 12:29:11,108 INFO L429 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:11,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:11,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1407440833, now seen corresponding path program 180 times [2020-10-16 12:29:11,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:11,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900385930] [2020-10-16 12:29:11,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:11,258 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:11,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900385930] [2020-10-16 12:29:11,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225029510] [2020-10-16 12:29:11,260 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:11,319 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:29:11,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:11,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:11,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:11,604 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:11,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:11,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:11,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1604105933] [2020-10-16 12:29:11,605 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:11,606 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:11,608 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:11,608 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:11,618 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:11,618 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:11,627 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:11,627 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:11,635 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:11,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:11,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:11,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:11,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:11,636 INFO L87 Difference]: Start difference. First operand 338 states and 912 transitions. Second operand 11 states. [2020-10-16 12:29:11,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:11,923 INFO L93 Difference]: Finished difference Result 450 states and 1143 transitions. [2020-10-16 12:29:11,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:11,923 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:11,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:11,924 INFO L225 Difference]: With dead ends: 450 [2020-10-16 12:29:11,924 INFO L226 Difference]: Without dead ends: 444 [2020-10-16 12:29:11,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=170, Invalid=382, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:29:11,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-10-16 12:29:11,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 336. [2020-10-16 12:29:11,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-10-16 12:29:11,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 906 transitions. [2020-10-16 12:29:11,929 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 906 transitions. Word has length 15 [2020-10-16 12:29:11,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:11,929 INFO L481 AbstractCegarLoop]: Abstraction has 336 states and 906 transitions. [2020-10-16 12:29:11,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:11,930 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 906 transitions. [2020-10-16 12:29:11,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:11,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:11,930 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:12,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194,191 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:12,131 INFO L429 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:12,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:12,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1408333602, now seen corresponding path program 181 times [2020-10-16 12:29:12,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:12,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632756020] [2020-10-16 12:29:12,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:12,289 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:12,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632756020] [2020-10-16 12:29:12,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910211050] [2020-10-16 12:29:12,290 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:12,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:12,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:12,606 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:12,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:12,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:12,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [510660727] [2020-10-16 12:29:12,607 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:12,619 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:12,621 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:12,621 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:12,631 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:12,632 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:12,642 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:12,642 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:12,648 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:12,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:12,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:12,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:12,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:12,650 INFO L87 Difference]: Start difference. First operand 336 states and 906 transitions. Second operand 11 states. [2020-10-16 12:29:12,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:12,944 INFO L93 Difference]: Finished difference Result 432 states and 1102 transitions. [2020-10-16 12:29:12,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:12,944 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:12,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:12,945 INFO L225 Difference]: With dead ends: 432 [2020-10-16 12:29:12,945 INFO L226 Difference]: Without dead ends: 427 [2020-10-16 12:29:12,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=181, Invalid=419, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:12,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-10-16 12:29:12,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 338. [2020-10-16 12:29:12,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-10-16 12:29:12,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 912 transitions. [2020-10-16 12:29:12,952 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 912 transitions. Word has length 15 [2020-10-16 12:29:12,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:12,952 INFO L481 AbstractCegarLoop]: Abstraction has 338 states and 912 transitions. [2020-10-16 12:29:12,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:12,953 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 912 transitions. [2020-10-16 12:29:12,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:12,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:12,953 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:13,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,192 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:13,154 INFO L429 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:13,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:13,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1408334563, now seen corresponding path program 182 times [2020-10-16 12:29:13,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:13,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655939741] [2020-10-16 12:29:13,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:13,305 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:13,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655939741] [2020-10-16 12:29:13,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245207079] [2020-10-16 12:29:13,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:13,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:29:13,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:13,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:13,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:13,613 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:13,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:13,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:13,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1225422907] [2020-10-16 12:29:13,614 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:13,615 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:13,617 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:13,617 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:13,628 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:13,628 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:13,638 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:13,639 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:13,645 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:13,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:13,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:13,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:13,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:13,646 INFO L87 Difference]: Start difference. First operand 338 states and 912 transitions. Second operand 11 states. [2020-10-16 12:29:14,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:14,015 INFO L93 Difference]: Finished difference Result 446 states and 1137 transitions. [2020-10-16 12:29:14,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:29:14,016 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:14,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:14,017 INFO L225 Difference]: With dead ends: 446 [2020-10-16 12:29:14,017 INFO L226 Difference]: Without dead ends: 440 [2020-10-16 12:29:14,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=201, Invalid=449, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:29:14,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2020-10-16 12:29:14,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 337. [2020-10-16 12:29:14,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-16 12:29:14,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 909 transitions. [2020-10-16 12:29:14,023 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 909 transitions. Word has length 15 [2020-10-16 12:29:14,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:14,023 INFO L481 AbstractCegarLoop]: Abstraction has 337 states and 909 transitions. [2020-10-16 12:29:14,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:14,023 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 909 transitions. [2020-10-16 12:29:14,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:14,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:14,024 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:14,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,193 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:14,226 INFO L429 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:14,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:14,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1408363393, now seen corresponding path program 183 times [2020-10-16 12:29:14,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:14,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462577505] [2020-10-16 12:29:14,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:14,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:14,378 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:14,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462577505] [2020-10-16 12:29:14,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350447670] [2020-10-16 12:29:14,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:14,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 12:29:14,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:14,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:14,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:14,660 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:14,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:14,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:14,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [274321332] [2020-10-16 12:29:14,662 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:14,663 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:14,665 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:14,665 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:14,677 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:14,677 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:14,685 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:14,686 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:14,696 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:14,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:14,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:14,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:14,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:14,698 INFO L87 Difference]: Start difference. First operand 337 states and 909 transitions. Second operand 11 states. [2020-10-16 12:29:14,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:14,989 INFO L93 Difference]: Finished difference Result 444 states and 1133 transitions. [2020-10-16 12:29:14,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:14,990 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:14,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:14,991 INFO L225 Difference]: With dead ends: 444 [2020-10-16 12:29:14,992 INFO L226 Difference]: Without dead ends: 438 [2020-10-16 12:29:14,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=167, Invalid=385, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:29:14,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-16 12:29:14,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 338. [2020-10-16 12:29:14,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-10-16 12:29:14,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 912 transitions. [2020-10-16 12:29:14,998 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 912 transitions. Word has length 15 [2020-10-16 12:29:14,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:14,998 INFO L481 AbstractCegarLoop]: Abstraction has 338 states and 912 transitions. [2020-10-16 12:29:14,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:14,998 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 912 transitions. [2020-10-16 12:29:14,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:14,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:14,999 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:15,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,194 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:15,200 INFO L429 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:15,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:15,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1408364354, now seen corresponding path program 184 times [2020-10-16 12:29:15,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:15,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906346897] [2020-10-16 12:29:15,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:15,376 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:15,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906346897] [2020-10-16 12:29:15,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786535762] [2020-10-16 12:29:15,377 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:15,417 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:29:15,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:15,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:15,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:15,643 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:15,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:15,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:15,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1696543941] [2020-10-16 12:29:15,644 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:15,645 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:15,647 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:15,647 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:15,657 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:15,658 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:15,668 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:15,668 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:15,677 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:15,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:15,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:15,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:15,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:15,677 INFO L87 Difference]: Start difference. First operand 338 states and 912 transitions. Second operand 11 states. [2020-10-16 12:29:15,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:15,964 INFO L93 Difference]: Finished difference Result 440 states and 1118 transitions. [2020-10-16 12:29:15,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:15,965 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:15,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:15,966 INFO L225 Difference]: With dead ends: 440 [2020-10-16 12:29:15,966 INFO L226 Difference]: Without dead ends: 419 [2020-10-16 12:29:15,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=167, Invalid=385, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:29:15,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-10-16 12:29:15,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 339. [2020-10-16 12:29:15,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-10-16 12:29:15,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 907 transitions. [2020-10-16 12:29:15,972 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 907 transitions. Word has length 15 [2020-10-16 12:29:15,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:15,972 INFO L481 AbstractCegarLoop]: Abstraction has 339 states and 907 transitions. [2020-10-16 12:29:15,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:15,972 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 907 transitions. [2020-10-16 12:29:15,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:15,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:15,973 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:16,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable198 [2020-10-16 12:29:16,174 INFO L429 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:16,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:16,174 INFO L82 PathProgramCache]: Analyzing trace with hash -2060879712, now seen corresponding path program 185 times [2020-10-16 12:29:16,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:16,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055085674] [2020-10-16 12:29:16,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:16,336 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:16,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055085674] [2020-10-16 12:29:16,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067801273] [2020-10-16 12:29:16,337 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:16,380 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-16 12:29:16,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:16,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:16,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:16,618 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:16,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:16,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:16,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [647792875] [2020-10-16 12:29:16,620 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:16,620 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:16,623 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:29:16,623 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:16,630 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:16,631 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:16,680 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:16,680 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:16,716 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:16,716 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:16,727 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:16,727 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:16,736 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [129139#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:16,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:29:16,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:16,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:29:16,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:16,737 INFO L87 Difference]: Start difference. First operand 339 states and 907 transitions. Second operand 12 states. [2020-10-16 12:29:17,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:17,036 INFO L93 Difference]: Finished difference Result 400 states and 1017 transitions. [2020-10-16 12:29:17,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:17,037 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:29:17,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:17,038 INFO L225 Difference]: With dead ends: 400 [2020-10-16 12:29:17,038 INFO L226 Difference]: Without dead ends: 397 [2020-10-16 12:29:17,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=172, Invalid=428, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:17,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-10-16 12:29:17,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 343. [2020-10-16 12:29:17,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-10-16 12:29:17,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 919 transitions. [2020-10-16 12:29:17,043 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 919 transitions. Word has length 15 [2020-10-16 12:29:17,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:17,043 INFO L481 AbstractCegarLoop]: Abstraction has 343 states and 919 transitions. [2020-10-16 12:29:17,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:29:17,044 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 919 transitions. [2020-10-16 12:29:17,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:17,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:17,044 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:17,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 196 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2020-10-16 12:29:17,245 INFO L429 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:17,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:17,246 INFO L82 PathProgramCache]: Analyzing trace with hash -2060878751, now seen corresponding path program 186 times [2020-10-16 12:29:17,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:17,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861011995] [2020-10-16 12:29:17,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:17,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:17,403 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:17,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861011995] [2020-10-16 12:29:17,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015573642] [2020-10-16 12:29:17,404 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:17,446 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-16 12:29:17,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:17,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:17,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:17,729 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:17,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:17,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:17,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1993354851] [2020-10-16 12:29:17,730 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:17,731 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:17,734 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:29:17,735 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:17,739 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:17,739 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:17,804 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:17,805 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:17,850 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:17,851 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:17,862 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:17,863 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:17,874 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [130297#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:17,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:29:17,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:17,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:29:17,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:17,876 INFO L87 Difference]: Start difference. First operand 343 states and 919 transitions. Second operand 12 states. [2020-10-16 12:29:18,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:18,274 INFO L93 Difference]: Finished difference Result 429 states and 1083 transitions. [2020-10-16 12:29:18,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:18,275 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:29:18,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:18,277 INFO L225 Difference]: With dead ends: 429 [2020-10-16 12:29:18,277 INFO L226 Difference]: Without dead ends: 425 [2020-10-16 12:29:18,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=174, Invalid=426, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:18,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-10-16 12:29:18,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 342. [2020-10-16 12:29:18,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-10-16 12:29:18,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 916 transitions. [2020-10-16 12:29:18,282 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 916 transitions. Word has length 15 [2020-10-16 12:29:18,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:18,283 INFO L481 AbstractCegarLoop]: Abstraction has 342 states and 916 transitions. [2020-10-16 12:29:18,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:29:18,283 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 916 transitions. [2020-10-16 12:29:18,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:18,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:18,283 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:18,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable200 [2020-10-16 12:29:18,484 INFO L429 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:18,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:18,485 INFO L82 PathProgramCache]: Analyzing trace with hash -2060849921, now seen corresponding path program 187 times [2020-10-16 12:29:18,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:18,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049678926] [2020-10-16 12:29:18,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:18,651 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:18,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049678926] [2020-10-16 12:29:18,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381584186] [2020-10-16 12:29:18,652 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:18,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:18,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:20,646 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:20,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:20,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:20,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1458286433] [2020-10-16 12:29:20,647 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:20,648 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:20,650 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:29:20,650 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:20,651 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:20,651 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:20,706 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:20,706 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:20,747 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:20,747 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:20,755 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:20,755 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:20,763 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [131482#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:20,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:29:20,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:20,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:29:20,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:20,764 INFO L87 Difference]: Start difference. First operand 342 states and 916 transitions. Second operand 12 states. [2020-10-16 12:29:21,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:21,055 INFO L93 Difference]: Finished difference Result 430 states and 1086 transitions. [2020-10-16 12:29:21,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:21,056 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:29:21,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:21,057 INFO L225 Difference]: With dead ends: 430 [2020-10-16 12:29:21,057 INFO L226 Difference]: Without dead ends: 426 [2020-10-16 12:29:21,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:21,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-10-16 12:29:21,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 343. [2020-10-16 12:29:21,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-10-16 12:29:21,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 919 transitions. [2020-10-16 12:29:21,065 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 919 transitions. Word has length 15 [2020-10-16 12:29:21,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:21,065 INFO L481 AbstractCegarLoop]: Abstraction has 343 states and 919 transitions. [2020-10-16 12:29:21,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:29:21,065 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 919 transitions. [2020-10-16 12:29:21,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:21,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:21,066 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:21,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2020-10-16 12:29:21,271 INFO L429 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:21,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:21,271 INFO L82 PathProgramCache]: Analyzing trace with hash -2060848960, now seen corresponding path program 188 times [2020-10-16 12:29:21,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:21,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122391813] [2020-10-16 12:29:21,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:21,442 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:21,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122391813] [2020-10-16 12:29:21,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575886058] [2020-10-16 12:29:21,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:21,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:29:21,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:21,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:21,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:21,768 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:21,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:21,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:21,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1048312777] [2020-10-16 12:29:21,769 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:21,770 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:21,773 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:29:21,773 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:21,774 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:21,774 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:21,830 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:21,831 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:21,874 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:21,874 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:21,882 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:21,882 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:21,891 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [132670#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:21,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:29:21,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:21,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:29:21,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:21,892 INFO L87 Difference]: Start difference. First operand 343 states and 919 transitions. Second operand 12 states. [2020-10-16 12:29:22,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:22,220 INFO L93 Difference]: Finished difference Result 445 states and 1122 transitions. [2020-10-16 12:29:22,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:22,222 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:29:22,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:22,223 INFO L225 Difference]: With dead ends: 445 [2020-10-16 12:29:22,223 INFO L226 Difference]: Without dead ends: 440 [2020-10-16 12:29:22,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:22,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2020-10-16 12:29:22,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 341. [2020-10-16 12:29:22,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-10-16 12:29:22,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 913 transitions. [2020-10-16 12:29:22,229 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 913 transitions. Word has length 15 [2020-10-16 12:29:22,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:22,229 INFO L481 AbstractCegarLoop]: Abstraction has 341 states and 913 transitions. [2020-10-16 12:29:22,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:29:22,229 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 913 transitions. [2020-10-16 12:29:22,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:22,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:22,229 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:22,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202,199 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:22,430 INFO L429 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:22,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:22,431 INFO L82 PathProgramCache]: Analyzing trace with hash -2059956191, now seen corresponding path program 189 times [2020-10-16 12:29:22,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:22,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071724387] [2020-10-16 12:29:22,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:22,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:22,591 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:22,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071724387] [2020-10-16 12:29:22,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934785788] [2020-10-16 12:29:22,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:22,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 12:29:22,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:22,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:22,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:22,945 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:22,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:22,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:22,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [189728420] [2020-10-16 12:29:22,946 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:22,947 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:22,949 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:29:22,949 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:22,950 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:22,950 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:23,013 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:23,014 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:23,045 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:23,045 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:23,056 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:23,056 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:23,065 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [133869#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:23,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:29:23,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:23,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:29:23,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:23,066 INFO L87 Difference]: Start difference. First operand 341 states and 913 transitions. Second operand 12 states. [2020-10-16 12:29:23,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:23,365 INFO L93 Difference]: Finished difference Result 435 states and 1102 transitions. [2020-10-16 12:29:23,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:23,366 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:29:23,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:23,367 INFO L225 Difference]: With dead ends: 435 [2020-10-16 12:29:23,367 INFO L226 Difference]: Without dead ends: 430 [2020-10-16 12:29:23,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:23,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-10-16 12:29:23,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 348. [2020-10-16 12:29:23,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-10-16 12:29:23,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 932 transitions. [2020-10-16 12:29:23,373 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 932 transitions. Word has length 15 [2020-10-16 12:29:23,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:23,374 INFO L481 AbstractCegarLoop]: Abstraction has 348 states and 932 transitions. [2020-10-16 12:29:23,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:29:23,374 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 932 transitions. [2020-10-16 12:29:23,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:23,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:23,374 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:23,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 200 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable203 [2020-10-16 12:29:23,575 INFO L429 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:23,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:23,576 INFO L82 PathProgramCache]: Analyzing trace with hash -2059955230, now seen corresponding path program 190 times [2020-10-16 12:29:23,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:23,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172339233] [2020-10-16 12:29:23,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:23,736 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:23,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172339233] [2020-10-16 12:29:23,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723502094] [2020-10-16 12:29:23,737 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:23,778 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:29:23,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:23,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:23,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:28,287 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:28,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:28,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:28,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1864114964] [2020-10-16 12:29:28,288 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:28,288 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:28,291 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:29:28,291 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:28,291 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:28,292 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:28,352 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:28,353 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:28,386 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:28,387 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:28,398 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:28,399 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:28,406 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [135072#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:28,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:29:28,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:28,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:29:28,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=276, Unknown=2, NotChecked=0, Total=380 [2020-10-16 12:29:28,407 INFO L87 Difference]: Start difference. First operand 348 states and 932 transitions. Second operand 12 states. [2020-10-16 12:29:28,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:28,740 INFO L93 Difference]: Finished difference Result 454 states and 1151 transitions. [2020-10-16 12:29:28,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:28,741 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:29:28,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:28,742 INFO L225 Difference]: With dead ends: 454 [2020-10-16 12:29:28,742 INFO L226 Difference]: Without dead ends: 448 [2020-10-16 12:29:28,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=173, Invalid=425, Unknown=2, NotChecked=0, Total=600 [2020-10-16 12:29:28,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-10-16 12:29:28,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 346. [2020-10-16 12:29:28,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-10-16 12:29:28,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 926 transitions. [2020-10-16 12:29:28,747 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 926 transitions. Word has length 15 [2020-10-16 12:29:28,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:28,748 INFO L481 AbstractCegarLoop]: Abstraction has 346 states and 926 transitions. [2020-10-16 12:29:28,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:29:28,748 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 926 transitions. [2020-10-16 12:29:28,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:28,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:28,748 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:28,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204,201 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:28,949 INFO L429 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:28,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:28,950 INFO L82 PathProgramCache]: Analyzing trace with hash -2059926400, now seen corresponding path program 191 times [2020-10-16 12:29:28,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:28,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332999449] [2020-10-16 12:29:28,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:29,129 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:29,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332999449] [2020-10-16 12:29:29,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607768578] [2020-10-16 12:29:29,130 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:29,189 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-16 12:29:29,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:29,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:29,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:29,654 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:29,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:29,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:29,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1627447467] [2020-10-16 12:29:29,656 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:29,657 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:29,660 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:29:29,660 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:29,661 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:29,661 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:29,747 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:29,748 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:29,799 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:29,799 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:29,823 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:29,823 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:29,835 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [136290#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:29,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:29:29,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:29,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:29:29,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:29,836 INFO L87 Difference]: Start difference. First operand 346 states and 926 transitions. Second operand 12 states. [2020-10-16 12:29:30,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:30,300 INFO L93 Difference]: Finished difference Result 454 states and 1151 transitions. [2020-10-16 12:29:30,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:29:30,301 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:29:30,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:30,302 INFO L225 Difference]: With dead ends: 454 [2020-10-16 12:29:30,303 INFO L226 Difference]: Without dead ends: 448 [2020-10-16 12:29:30,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:29:30,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-10-16 12:29:30,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 348. [2020-10-16 12:29:30,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-10-16 12:29:30,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 932 transitions. [2020-10-16 12:29:30,309 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 932 transitions. Word has length 15 [2020-10-16 12:29:30,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:30,309 INFO L481 AbstractCegarLoop]: Abstraction has 348 states and 932 transitions. [2020-10-16 12:29:30,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:29:30,309 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 932 transitions. [2020-10-16 12:29:30,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:30,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:30,310 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:30,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 202 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable205 [2020-10-16 12:29:30,511 INFO L429 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:30,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:30,511 INFO L82 PathProgramCache]: Analyzing trace with hash -2059925439, now seen corresponding path program 192 times [2020-10-16 12:29:30,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:30,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751561795] [2020-10-16 12:29:30,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:30,677 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:30,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751561795] [2020-10-16 12:29:30,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985606490] [2020-10-16 12:29:30,678 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:30,720 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:29:30,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:30,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:30,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:31,019 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:31,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:31,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:31,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [310561430] [2020-10-16 12:29:31,020 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:31,020 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:31,023 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:29:31,023 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:31,024 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:31,024 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:31,079 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:31,080 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:31,111 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:31,111 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:31,126 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:31,126 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:31,133 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [137514#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:31,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:29:31,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:31,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:29:31,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:31,135 INFO L87 Difference]: Start difference. First operand 348 states and 932 transitions. Second operand 12 states. [2020-10-16 12:29:31,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:31,453 INFO L93 Difference]: Finished difference Result 455 states and 1150 transitions. [2020-10-16 12:29:31,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:31,454 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:29:31,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:31,454 INFO L225 Difference]: With dead ends: 455 [2020-10-16 12:29:31,454 INFO L226 Difference]: Without dead ends: 437 [2020-10-16 12:29:31,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=176, Invalid=424, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:31,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-10-16 12:29:31,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 343. [2020-10-16 12:29:31,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-10-16 12:29:31,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 916 transitions. [2020-10-16 12:29:31,461 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 916 transitions. Word has length 15 [2020-10-16 12:29:31,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:31,461 INFO L481 AbstractCegarLoop]: Abstraction has 343 states and 916 transitions. [2020-10-16 12:29:31,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:29:31,461 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 916 transitions. [2020-10-16 12:29:31,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:31,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:31,462 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:31,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206,203 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:31,662 INFO L429 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:31,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:31,663 INFO L82 PathProgramCache]: Analyzing trace with hash -2032250561, now seen corresponding path program 193 times [2020-10-16 12:29:31,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:31,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840926440] [2020-10-16 12:29:31,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:31,831 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:31,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840926440] [2020-10-16 12:29:31,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338110073] [2020-10-16 12:29:31,832 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:31,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:31,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:32,107 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:32,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:32,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:32,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1579858847] [2020-10-16 12:29:32,109 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:32,110 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:32,113 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:29:32,113 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:32,119 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:32,120 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:32,182 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:32,183 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:32,220 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:32,221 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:32,234 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:32,235 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:32,241 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [138727#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:32,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:29:32,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:32,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:29:32,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:32,242 INFO L87 Difference]: Start difference. First operand 343 states and 916 transitions. Second operand 12 states. [2020-10-16 12:29:32,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:32,592 INFO L93 Difference]: Finished difference Result 426 states and 1080 transitions. [2020-10-16 12:29:32,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 12:29:32,593 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:29:32,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:32,594 INFO L225 Difference]: With dead ends: 426 [2020-10-16 12:29:32,594 INFO L226 Difference]: Without dead ends: 421 [2020-10-16 12:29:32,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:29:32,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-10-16 12:29:32,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 350. [2020-10-16 12:29:32,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-10-16 12:29:32,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 935 transitions. [2020-10-16 12:29:32,600 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 935 transitions. Word has length 15 [2020-10-16 12:29:32,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:32,600 INFO L481 AbstractCegarLoop]: Abstraction has 350 states and 935 transitions. [2020-10-16 12:29:32,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:29:32,600 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 935 transitions. [2020-10-16 12:29:32,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:32,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:32,601 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:32,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207,204 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:32,802 INFO L429 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:32,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:32,802 INFO L82 PathProgramCache]: Analyzing trace with hash -2032249600, now seen corresponding path program 194 times [2020-10-16 12:29:32,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:32,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739465861] [2020-10-16 12:29:32,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:32,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:32,965 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:32,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739465861] [2020-10-16 12:29:32,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125608766] [2020-10-16 12:29:32,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:33,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:29:33,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:33,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:33,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:33,264 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:33,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:33,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:33,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1426474245] [2020-10-16 12:29:33,265 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:33,266 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:33,268 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:29:33,268 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:33,270 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:33,271 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:33,320 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:33,320 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:33,361 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:33,362 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:33,374 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:33,374 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:33,380 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [139929#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:33,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:29:33,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:33,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:29:33,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:33,381 INFO L87 Difference]: Start difference. First operand 350 states and 935 transitions. Second operand 12 states. [2020-10-16 12:29:33,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:33,732 INFO L93 Difference]: Finished difference Result 445 states and 1128 transitions. [2020-10-16 12:29:33,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:29:33,733 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:29:33,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:33,734 INFO L225 Difference]: With dead ends: 445 [2020-10-16 12:29:33,734 INFO L226 Difference]: Without dead ends: 439 [2020-10-16 12:29:33,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:29:33,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-10-16 12:29:33,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 348. [2020-10-16 12:29:33,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-10-16 12:29:33,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 929 transitions. [2020-10-16 12:29:33,739 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 929 transitions. Word has length 15 [2020-10-16 12:29:33,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:33,740 INFO L481 AbstractCegarLoop]: Abstraction has 348 states and 929 transitions. [2020-10-16 12:29:33,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:29:33,740 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 929 transitions. [2020-10-16 12:29:33,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:33,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:33,740 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:33,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,205 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:33,941 INFO L429 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:33,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:33,942 INFO L82 PathProgramCache]: Analyzing trace with hash -2032220770, now seen corresponding path program 195 times [2020-10-16 12:29:33,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:33,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666359700] [2020-10-16 12:29:33,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:34,119 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:34,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666359700] [2020-10-16 12:29:34,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373998051] [2020-10-16 12:29:34,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:34,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 12:29:34,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:34,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:34,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:34,420 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:34,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:34,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:34,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [364117827] [2020-10-16 12:29:34,421 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:34,422 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:34,425 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:29:34,425 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:34,427 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:34,428 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:34,478 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:34,478 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:34,522 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:34,522 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:34,535 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:34,535 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:34,552 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [141144#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:34,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:29:34,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:34,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:29:34,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:34,553 INFO L87 Difference]: Start difference. First operand 348 states and 929 transitions. Second operand 12 states. [2020-10-16 12:29:34,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:34,878 INFO L93 Difference]: Finished difference Result 432 states and 1100 transitions. [2020-10-16 12:29:34,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:34,879 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:29:34,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:34,880 INFO L225 Difference]: With dead ends: 432 [2020-10-16 12:29:34,881 INFO L226 Difference]: Without dead ends: 426 [2020-10-16 12:29:34,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=172, Invalid=428, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:34,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-10-16 12:29:34,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 350. [2020-10-16 12:29:34,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-10-16 12:29:34,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 935 transitions. [2020-10-16 12:29:34,887 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 935 transitions. Word has length 15 [2020-10-16 12:29:34,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:34,887 INFO L481 AbstractCegarLoop]: Abstraction has 350 states and 935 transitions. [2020-10-16 12:29:34,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:29:34,887 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 935 transitions. [2020-10-16 12:29:34,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:34,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:34,888 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:35,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209,206 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:35,089 INFO L429 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:35,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:35,089 INFO L82 PathProgramCache]: Analyzing trace with hash -2032219809, now seen corresponding path program 196 times [2020-10-16 12:29:35,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:35,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842657998] [2020-10-16 12:29:35,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:35,253 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:35,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842657998] [2020-10-16 12:29:35,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232775752] [2020-10-16 12:29:35,254 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:35,294 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:29:35,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:35,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:35,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:35,540 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:35,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:35,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:35,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [919163121] [2020-10-16 12:29:35,541 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:35,542 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:35,544 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:29:35,545 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:35,547 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:35,547 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:35,608 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:35,608 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:35,651 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:35,652 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:35,664 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:35,664 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:35,672 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [142348#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:35,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:29:35,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:35,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:29:35,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:35,673 INFO L87 Difference]: Start difference. First operand 350 states and 935 transitions. Second operand 12 states. [2020-10-16 12:29:36,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:36,004 INFO L93 Difference]: Finished difference Result 452 states and 1142 transitions. [2020-10-16 12:29:36,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:36,004 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:29:36,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:36,005 INFO L225 Difference]: With dead ends: 452 [2020-10-16 12:29:36,006 INFO L226 Difference]: Without dead ends: 435 [2020-10-16 12:29:36,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=423, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:36,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-10-16 12:29:36,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 346. [2020-10-16 12:29:36,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-10-16 12:29:36,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 923 transitions. [2020-10-16 12:29:36,011 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 923 transitions. Word has length 15 [2020-10-16 12:29:36,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:36,011 INFO L481 AbstractCegarLoop]: Abstraction has 346 states and 923 transitions. [2020-10-16 12:29:36,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:29:36,011 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 923 transitions. [2020-10-16 12:29:36,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:36,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:36,011 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:36,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable210 [2020-10-16 12:29:36,212 INFO L429 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:36,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:36,213 INFO L82 PathProgramCache]: Analyzing trace with hash -2031327040, now seen corresponding path program 197 times [2020-10-16 12:29:36,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:36,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230061358] [2020-10-16 12:29:36,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:36,401 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:36,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230061358] [2020-10-16 12:29:36,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562746380] [2020-10-16 12:29:36,402 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:36,444 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-16 12:29:36,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:36,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:36,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:36,725 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:36,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:36,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:36,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1114722522] [2020-10-16 12:29:36,727 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:36,727 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:36,730 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:29:36,730 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:36,733 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:36,733 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:36,786 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:36,787 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:36,827 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:36,827 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:36,836 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:36,836 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:36,846 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [143564#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:36,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:29:36,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:36,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:29:36,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:36,847 INFO L87 Difference]: Start difference. First operand 346 states and 923 transitions. Second operand 12 states. [2020-10-16 12:29:37,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:37,189 INFO L93 Difference]: Finished difference Result 439 states and 1115 transitions. [2020-10-16 12:29:37,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:29:37,190 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:29:37,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:37,191 INFO L225 Difference]: With dead ends: 439 [2020-10-16 12:29:37,191 INFO L226 Difference]: Without dead ends: 433 [2020-10-16 12:29:37,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:29:37,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2020-10-16 12:29:37,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 351. [2020-10-16 12:29:37,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-10-16 12:29:37,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 936 transitions. [2020-10-16 12:29:37,196 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 936 transitions. Word has length 15 [2020-10-16 12:29:37,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:37,196 INFO L481 AbstractCegarLoop]: Abstraction has 351 states and 936 transitions. [2020-10-16 12:29:37,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:29:37,196 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 936 transitions. [2020-10-16 12:29:37,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:37,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:37,197 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:37,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 208 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable211 [2020-10-16 12:29:37,398 INFO L429 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:37,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:37,399 INFO L82 PathProgramCache]: Analyzing trace with hash -2031326079, now seen corresponding path program 198 times [2020-10-16 12:29:37,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:37,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541917222] [2020-10-16 12:29:37,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:37,572 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:37,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541917222] [2020-10-16 12:29:37,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879585500] [2020-10-16 12:29:37,573 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:37,615 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-16 12:29:37,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:37,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:37,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:37,921 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:37,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:37,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:37,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [765086110] [2020-10-16 12:29:37,922 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:37,923 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:37,925 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:29:37,925 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:37,928 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:37,928 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:37,980 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:37,981 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:38,020 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:38,021 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:38,030 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:38,031 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:38,040 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [144779#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:38,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:29:38,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:38,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:29:38,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:38,041 INFO L87 Difference]: Start difference. First operand 351 states and 936 transitions. Second operand 12 states. [2020-10-16 12:29:38,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:38,352 INFO L93 Difference]: Finished difference Result 444 states and 1122 transitions. [2020-10-16 12:29:38,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:38,353 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:29:38,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:38,354 INFO L225 Difference]: With dead ends: 444 [2020-10-16 12:29:38,354 INFO L226 Difference]: Without dead ends: 428 [2020-10-16 12:29:38,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=174, Invalid=426, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:38,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2020-10-16 12:29:38,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 349. [2020-10-16 12:29:38,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-10-16 12:29:38,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 930 transitions. [2020-10-16 12:29:38,359 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 930 transitions. Word has length 15 [2020-10-16 12:29:38,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:38,360 INFO L481 AbstractCegarLoop]: Abstraction has 349 states and 930 transitions. [2020-10-16 12:29:38,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:29:38,360 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 930 transitions. [2020-10-16 12:29:38,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:38,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:38,360 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:38,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 209 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212 [2020-10-16 12:29:38,561 INFO L429 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:38,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:38,562 INFO L82 PathProgramCache]: Analyzing trace with hash -2031297249, now seen corresponding path program 199 times [2020-10-16 12:29:38,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:38,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212071213] [2020-10-16 12:29:38,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:38,751 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:38,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212071213] [2020-10-16 12:29:38,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971789411] [2020-10-16 12:29:38,752 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:38,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:38,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:39,058 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:39,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:39,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:39,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [750439451] [2020-10-16 12:29:39,059 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:39,059 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:39,062 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:29:39,062 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:39,065 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:39,065 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:39,115 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:39,115 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:39,170 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:39,170 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:39,180 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:39,180 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:39,191 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [145993#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:39,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:29:39,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:39,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:29:39,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:39,192 INFO L87 Difference]: Start difference. First operand 349 states and 930 transitions. Second operand 12 states. [2020-10-16 12:29:39,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:39,539 INFO L93 Difference]: Finished difference Result 443 states and 1119 transitions. [2020-10-16 12:29:39,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:39,541 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:29:39,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:39,542 INFO L225 Difference]: With dead ends: 443 [2020-10-16 12:29:39,542 INFO L226 Difference]: Without dead ends: 428 [2020-10-16 12:29:39,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:39,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2020-10-16 12:29:39,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 352. [2020-10-16 12:29:39,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-10-16 12:29:39,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 935 transitions. [2020-10-16 12:29:39,547 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 935 transitions. Word has length 15 [2020-10-16 12:29:39,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:39,547 INFO L481 AbstractCegarLoop]: Abstraction has 352 states and 935 transitions. [2020-10-16 12:29:39,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:29:39,547 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 935 transitions. [2020-10-16 12:29:39,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:39,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:39,548 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:39,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 210 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable213 [2020-10-16 12:29:39,748 INFO L429 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:39,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:39,749 INFO L82 PathProgramCache]: Analyzing trace with hash -2031296288, now seen corresponding path program 200 times [2020-10-16 12:29:39,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:39,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586778645] [2020-10-16 12:29:39,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:39,921 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:39,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586778645] [2020-10-16 12:29:39,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440665540] [2020-10-16 12:29:39,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:39,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:29:39,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:39,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:39,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:40,229 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:40,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:40,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:40,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [459989301] [2020-10-16 12:29:40,231 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:40,232 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:40,234 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:29:40,235 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:40,237 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:40,237 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:40,286 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:40,286 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:40,331 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:40,331 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:40,340 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:40,340 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:40,350 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [147212#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:40,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:29:40,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:40,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:29:40,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:40,350 INFO L87 Difference]: Start difference. First operand 352 states and 935 transitions. Second operand 12 states. [2020-10-16 12:29:40,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:40,686 INFO L93 Difference]: Finished difference Result 430 states and 1085 transitions. [2020-10-16 12:29:40,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:40,687 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:29:40,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:40,688 INFO L225 Difference]: With dead ends: 430 [2020-10-16 12:29:40,688 INFO L226 Difference]: Without dead ends: 411 [2020-10-16 12:29:40,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=423, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:40,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-10-16 12:29:40,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 348. [2020-10-16 12:29:40,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-10-16 12:29:40,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 923 transitions. [2020-10-16 12:29:40,694 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 923 transitions. Word has length 15 [2020-10-16 12:29:40,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:40,694 INFO L481 AbstractCegarLoop]: Abstraction has 348 states and 923 transitions. [2020-10-16 12:29:40,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:29:40,694 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 923 transitions. [2020-10-16 12:29:40,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:40,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:40,695 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:40,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214,211 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:40,896 INFO L429 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:40,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:40,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1173376031, now seen corresponding path program 201 times [2020-10-16 12:29:40,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:40,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766937900] [2020-10-16 12:29:40,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:41,072 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:41,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766937900] [2020-10-16 12:29:41,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836303729] [2020-10-16 12:29:41,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:41,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 12:29:41,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:41,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:41,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:41,420 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:41,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:41,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:41,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1392918252] [2020-10-16 12:29:41,421 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:41,422 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:41,425 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 42 transitions. [2020-10-16 12:29:41,425 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:41,428 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:41,428 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:41,492 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:41,493 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:41,529 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:41,529 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:41,576 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:41,576 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:41,584 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:41,585 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:41,597 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:41,597 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:41,607 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [148410#(and (<= ~j~0 (+ (* 2 ~i~0) 1)) (= ~i~0 1)), 148411#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:41,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:29:41,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:41,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:29:41,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:29:41,608 INFO L87 Difference]: Start difference. First operand 348 states and 923 transitions. Second operand 13 states. [2020-10-16 12:29:41,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:41,902 INFO L93 Difference]: Finished difference Result 431 states and 1085 transitions. [2020-10-16 12:29:41,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:29:41,903 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2020-10-16 12:29:41,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:41,904 INFO L225 Difference]: With dead ends: 431 [2020-10-16 12:29:41,904 INFO L226 Difference]: Without dead ends: 427 [2020-10-16 12:29:41,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:41,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-10-16 12:29:41,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 351. [2020-10-16 12:29:41,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-10-16 12:29:41,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 932 transitions. [2020-10-16 12:29:41,910 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 932 transitions. Word has length 15 [2020-10-16 12:29:41,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:41,910 INFO L481 AbstractCegarLoop]: Abstraction has 351 states and 932 transitions. [2020-10-16 12:29:41,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:29:41,910 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 932 transitions. [2020-10-16 12:29:41,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:41,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:41,911 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:42,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 212 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable215 [2020-10-16 12:29:42,112 INFO L429 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:42,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:42,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1173375070, now seen corresponding path program 202 times [2020-10-16 12:29:42,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:42,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523698175] [2020-10-16 12:29:42,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:42,297 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:42,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523698175] [2020-10-16 12:29:42,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411269778] [2020-10-16 12:29:42,297 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:42,339 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:29:42,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:42,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:42,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:42,702 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:42,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:42,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:42,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [674169390] [2020-10-16 12:29:42,702 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:42,703 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:42,706 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 42 transitions. [2020-10-16 12:29:42,706 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:42,710 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:42,710 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:42,776 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:42,777 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:42,826 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:42,826 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:42,859 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:42,860 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:42,867 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:42,867 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:42,879 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:42,879 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:42,889 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [149614#(and (<= ~j~0 (+ (* 2 ~i~0) 1)) (= ~i~0 1)), 149615#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:42,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:29:42,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:42,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:29:42,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:29:42,889 INFO L87 Difference]: Start difference. First operand 351 states and 932 transitions. Second operand 13 states. [2020-10-16 12:29:43,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:43,235 INFO L93 Difference]: Finished difference Result 467 states and 1170 transitions. [2020-10-16 12:29:43,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:29:43,236 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2020-10-16 12:29:43,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:43,237 INFO L225 Difference]: With dead ends: 467 [2020-10-16 12:29:43,237 INFO L226 Difference]: Without dead ends: 461 [2020-10-16 12:29:43,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=174, Invalid=426, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:43,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2020-10-16 12:29:43,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 354. [2020-10-16 12:29:43,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-10-16 12:29:43,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 939 transitions. [2020-10-16 12:29:43,243 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 939 transitions. Word has length 15 [2020-10-16 12:29:43,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:43,243 INFO L481 AbstractCegarLoop]: Abstraction has 354 states and 939 transitions. [2020-10-16 12:29:43,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:29:43,243 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 939 transitions. [2020-10-16 12:29:43,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:43,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:43,244 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:43,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216,213 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:43,445 INFO L429 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:43,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:43,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1173346240, now seen corresponding path program 203 times [2020-10-16 12:29:43,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:43,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795561847] [2020-10-16 12:29:43,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:43,666 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:43,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795561847] [2020-10-16 12:29:43,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508076988] [2020-10-16 12:29:43,667 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:43,710 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-16 12:29:43,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:43,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:43,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:44,887 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:44,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:44,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:44,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [361104920] [2020-10-16 12:29:44,888 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:44,889 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:44,891 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 42 transitions. [2020-10-16 12:29:44,891 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:44,895 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:44,896 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:44,955 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:44,956 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:44,999 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:45,000 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:45,030 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:45,030 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:45,041 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:45,041 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:45,053 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:45,053 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:45,062 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [150860#(and (<= ~j~0 (+ (* 2 ~i~0) 1)) (= ~i~0 1)), 150861#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:45,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:29:45,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:45,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:29:45,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:29:45,063 INFO L87 Difference]: Start difference. First operand 354 states and 939 transitions. Second operand 13 states. [2020-10-16 12:29:45,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:45,347 INFO L93 Difference]: Finished difference Result 464 states and 1166 transitions. [2020-10-16 12:29:45,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:29:45,348 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2020-10-16 12:29:45,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:45,349 INFO L225 Difference]: With dead ends: 464 [2020-10-16 12:29:45,349 INFO L226 Difference]: Without dead ends: 458 [2020-10-16 12:29:45,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=172, Invalid=428, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:45,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2020-10-16 12:29:45,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 356. [2020-10-16 12:29:45,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-10-16 12:29:45,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 945 transitions. [2020-10-16 12:29:45,355 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 945 transitions. Word has length 15 [2020-10-16 12:29:45,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:45,355 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 945 transitions. [2020-10-16 12:29:45,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:29:45,355 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 945 transitions. [2020-10-16 12:29:45,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:45,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:45,356 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:45,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 214 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable217 [2020-10-16 12:29:45,557 INFO L429 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:45,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:45,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1173345279, now seen corresponding path program 204 times [2020-10-16 12:29:45,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:45,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736298979] [2020-10-16 12:29:45,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:45,738 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:45,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736298979] [2020-10-16 12:29:45,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271149718] [2020-10-16 12:29:45,739 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:45,780 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-16 12:29:45,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:45,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:45,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:49,330 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:49,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:49,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:49,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [107390966] [2020-10-16 12:29:49,331 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:49,332 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:49,334 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 42 transitions. [2020-10-16 12:29:49,335 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:49,340 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:49,340 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:49,400 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:49,400 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:49,439 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:49,439 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:49,474 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:49,475 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:49,485 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:49,485 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:49,497 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:49,498 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:49,506 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [152107#(and (<= ~j~0 (+ (* 2 ~i~0) 1)) (= ~i~0 1)), 152108#(and (<= ~j~0 (+ ~i~0 1)) (= ~i~0 1))] [2020-10-16 12:29:49,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:29:49,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:49,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:29:49,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:29:49,507 INFO L87 Difference]: Start difference. First operand 356 states and 945 transitions. Second operand 13 states. [2020-10-16 12:29:49,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:49,832 INFO L93 Difference]: Finished difference Result 467 states and 1167 transitions. [2020-10-16 12:29:49,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:29:49,833 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2020-10-16 12:29:49,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:49,834 INFO L225 Difference]: With dead ends: 467 [2020-10-16 12:29:49,835 INFO L226 Difference]: Without dead ends: 450 [2020-10-16 12:29:49,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=177, Invalid=423, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:49,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-10-16 12:29:49,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 352. [2020-10-16 12:29:49,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-10-16 12:29:49,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 933 transitions. [2020-10-16 12:29:49,841 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 933 transitions. Word has length 15 [2020-10-16 12:29:49,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:49,841 INFO L481 AbstractCegarLoop]: Abstraction has 352 states and 933 transitions. [2020-10-16 12:29:49,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:29:49,841 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 933 transitions. [2020-10-16 12:29:49,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:49,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:49,842 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:50,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218,215 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:50,043 INFO L429 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:50,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:50,043 INFO L82 PathProgramCache]: Analyzing trace with hash 439565519, now seen corresponding path program 205 times [2020-10-16 12:29:50,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:50,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205691142] [2020-10-16 12:29:50,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:50,294 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:50,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205691142] [2020-10-16 12:29:50,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311997160] [2020-10-16 12:29:50,294 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:50,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:50,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:50,593 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:50,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:50,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:50,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1156422506] [2020-10-16 12:29:50,594 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:50,595 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:50,597 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 39 transitions. [2020-10-16 12:29:50,598 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:50,613 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:50,614 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:50,630 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:50,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:50,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:50,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:50,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:50,631 INFO L87 Difference]: Start difference. First operand 352 states and 933 transitions. Second operand 11 states. [2020-10-16 12:29:50,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:50,708 INFO L93 Difference]: Finished difference Result 404 states and 1027 transitions. [2020-10-16 12:29:50,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:50,709 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:50,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:50,710 INFO L225 Difference]: With dead ends: 404 [2020-10-16 12:29:50,710 INFO L226 Difference]: Without dead ends: 402 [2020-10-16 12:29:50,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:50,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-10-16 12:29:50,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 360. [2020-10-16 12:29:50,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2020-10-16 12:29:50,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 957 transitions. [2020-10-16 12:29:50,717 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 957 transitions. Word has length 15 [2020-10-16 12:29:50,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:50,718 INFO L481 AbstractCegarLoop]: Abstraction has 360 states and 957 transitions. [2020-10-16 12:29:50,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:50,718 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 957 transitions. [2020-10-16 12:29:50,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:50,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:50,719 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:50,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 216 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable219 [2020-10-16 12:29:50,931 INFO L429 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:50,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:50,931 INFO L82 PathProgramCache]: Analyzing trace with hash 439566480, now seen corresponding path program 206 times [2020-10-16 12:29:50,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:50,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836478621] [2020-10-16 12:29:50,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:51,192 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:51,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836478621] [2020-10-16 12:29:51,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833300898] [2020-10-16 12:29:51,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:51,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:29:51,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:51,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:51,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:51,488 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:51,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:51,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:51,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [298766126] [2020-10-16 12:29:51,490 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:51,490 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:51,493 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 37 transitions. [2020-10-16 12:29:51,493 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:51,505 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:51,505 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:51,516 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:51,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:51,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:51,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:51,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:51,517 INFO L87 Difference]: Start difference. First operand 360 states and 957 transitions. Second operand 11 states. [2020-10-16 12:29:51,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:51,651 INFO L93 Difference]: Finished difference Result 432 states and 1094 transitions. [2020-10-16 12:29:51,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:51,652 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:51,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:51,653 INFO L225 Difference]: With dead ends: 432 [2020-10-16 12:29:51,653 INFO L226 Difference]: Without dead ends: 429 [2020-10-16 12:29:51,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:29:51,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-10-16 12:29:51,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 358. [2020-10-16 12:29:51,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-10-16 12:29:51,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 951 transitions. [2020-10-16 12:29:51,659 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 951 transitions. Word has length 15 [2020-10-16 12:29:51,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:51,659 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 951 transitions. [2020-10-16 12:29:51,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:51,659 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 951 transitions. [2020-10-16 12:29:51,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:51,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:51,660 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:51,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220,217 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:51,861 INFO L429 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:51,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:51,861 INFO L82 PathProgramCache]: Analyzing trace with hash 439595310, now seen corresponding path program 207 times [2020-10-16 12:29:51,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:51,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687461527] [2020-10-16 12:29:51,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:52,073 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:52,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687461527] [2020-10-16 12:29:52,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239080233] [2020-10-16 12:29:52,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:52,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:29:52,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:52,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:52,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:52,461 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:52,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:52,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:52,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1343359909] [2020-10-16 12:29:52,461 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:52,462 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:52,464 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 35 transitions. [2020-10-16 12:29:52,465 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:52,483 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:52,484 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:52,495 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:52,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:52,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:52,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:52,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:52,497 INFO L87 Difference]: Start difference. First operand 358 states and 951 transitions. Second operand 11 states. [2020-10-16 12:29:52,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:52,668 INFO L93 Difference]: Finished difference Result 437 states and 1105 transitions. [2020-10-16 12:29:52,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:52,669 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:52,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:52,670 INFO L225 Difference]: With dead ends: 437 [2020-10-16 12:29:52,671 INFO L226 Difference]: Without dead ends: 434 [2020-10-16 12:29:52,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:29:52,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-16 12:29:52,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 359. [2020-10-16 12:29:52,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2020-10-16 12:29:52,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 954 transitions. [2020-10-16 12:29:52,676 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 954 transitions. Word has length 15 [2020-10-16 12:29:52,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:52,676 INFO L481 AbstractCegarLoop]: Abstraction has 359 states and 954 transitions. [2020-10-16 12:29:52,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:52,676 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 954 transitions. [2020-10-16 12:29:52,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:52,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:52,677 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:52,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 218 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable221 [2020-10-16 12:29:52,878 INFO L429 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:52,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:52,878 INFO L82 PathProgramCache]: Analyzing trace with hash 439596271, now seen corresponding path program 208 times [2020-10-16 12:29:52,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:52,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064263486] [2020-10-16 12:29:52,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:53,103 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:53,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064263486] [2020-10-16 12:29:53,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016772159] [2020-10-16 12:29:53,104 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:53,145 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:29:53,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:53,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:53,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:53,420 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:53,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:53,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:53,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [673193674] [2020-10-16 12:29:53,421 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:53,421 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:53,424 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 35 transitions. [2020-10-16 12:29:53,424 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:53,445 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:53,445 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:53,453 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:53,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:53,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:53,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:53,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:53,454 INFO L87 Difference]: Start difference. First operand 359 states and 954 transitions. Second operand 11 states. [2020-10-16 12:29:53,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:53,639 INFO L93 Difference]: Finished difference Result 454 states and 1145 transitions. [2020-10-16 12:29:53,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:53,640 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:53,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:53,641 INFO L225 Difference]: With dead ends: 454 [2020-10-16 12:29:53,641 INFO L226 Difference]: Without dead ends: 450 [2020-10-16 12:29:53,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:29:53,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-10-16 12:29:53,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 356. [2020-10-16 12:29:53,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-10-16 12:29:53,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 945 transitions. [2020-10-16 12:29:53,647 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 945 transitions. Word has length 15 [2020-10-16 12:29:53,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:53,648 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 945 transitions. [2020-10-16 12:29:53,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:53,648 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 945 transitions. [2020-10-16 12:29:53,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:53,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:53,649 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:53,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 219 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable222 [2020-10-16 12:29:53,861 INFO L429 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:53,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:53,861 INFO L82 PathProgramCache]: Analyzing trace with hash 440489040, now seen corresponding path program 209 times [2020-10-16 12:29:53,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:53,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542630212] [2020-10-16 12:29:53,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:54,075 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:54,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542630212] [2020-10-16 12:29:54,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987417144] [2020-10-16 12:29:54,076 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:54,119 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:29:54,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:54,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:54,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:54,437 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:54,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:54,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:54,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1021945210] [2020-10-16 12:29:54,438 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:54,438 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:54,441 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 33 transitions. [2020-10-16 12:29:54,442 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:54,449 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:54,449 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:54,470 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:54,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:54,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:54,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:54,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:54,471 INFO L87 Difference]: Start difference. First operand 356 states and 945 transitions. Second operand 11 states. [2020-10-16 12:29:54,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:54,737 INFO L93 Difference]: Finished difference Result 436 states and 1102 transitions. [2020-10-16 12:29:54,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:54,738 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:54,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:54,739 INFO L225 Difference]: With dead ends: 436 [2020-10-16 12:29:54,739 INFO L226 Difference]: Without dead ends: 433 [2020-10-16 12:29:54,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:29:54,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2020-10-16 12:29:54,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 358. [2020-10-16 12:29:54,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-10-16 12:29:54,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 951 transitions. [2020-10-16 12:29:54,759 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 951 transitions. Word has length 15 [2020-10-16 12:29:54,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:54,759 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 951 transitions. [2020-10-16 12:29:54,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:54,759 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 951 transitions. [2020-10-16 12:29:54,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:54,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:54,760 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:54,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 220 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable223 [2020-10-16 12:29:54,961 INFO L429 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:54,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:54,962 INFO L82 PathProgramCache]: Analyzing trace with hash 440490001, now seen corresponding path program 210 times [2020-10-16 12:29:54,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:54,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728862546] [2020-10-16 12:29:54,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:55,206 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:55,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728862546] [2020-10-16 12:29:55,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724970317] [2020-10-16 12:29:55,207 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:55,252 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:29:55,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:55,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:55,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:56,179 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:56,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:56,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:56,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1894828522] [2020-10-16 12:29:56,180 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:56,181 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:56,183 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 33 transitions. [2020-10-16 12:29:56,183 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:56,189 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:56,189 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:56,206 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:56,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:56,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:56,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:56,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:56,207 INFO L87 Difference]: Start difference. First operand 358 states and 951 transitions. Second operand 11 states. [2020-10-16 12:29:56,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:56,460 INFO L93 Difference]: Finished difference Result 458 states and 1153 transitions. [2020-10-16 12:29:56,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:56,461 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:56,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:56,462 INFO L225 Difference]: With dead ends: 458 [2020-10-16 12:29:56,462 INFO L226 Difference]: Without dead ends: 454 [2020-10-16 12:29:56,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:29:56,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2020-10-16 12:29:56,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 357. [2020-10-16 12:29:56,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-10-16 12:29:56,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 948 transitions. [2020-10-16 12:29:56,468 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 948 transitions. Word has length 15 [2020-10-16 12:29:56,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:56,468 INFO L481 AbstractCegarLoop]: Abstraction has 357 states and 948 transitions. [2020-10-16 12:29:56,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:56,468 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 948 transitions. [2020-10-16 12:29:56,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:56,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:56,469 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:56,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224,221 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:56,670 INFO L429 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:56,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:56,670 INFO L82 PathProgramCache]: Analyzing trace with hash 440518831, now seen corresponding path program 211 times [2020-10-16 12:29:56,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:56,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249720208] [2020-10-16 12:29:56,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:56,889 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:56,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249720208] [2020-10-16 12:29:56,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519786724] [2020-10-16 12:29:56,889 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:56,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:56,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:57,302 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:57,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:57,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:57,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [795295420] [2020-10-16 12:29:57,303 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:57,304 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:57,307 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 33 transitions. [2020-10-16 12:29:57,308 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:57,321 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:57,321 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:57,354 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:57,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:57,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:57,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:57,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:57,355 INFO L87 Difference]: Start difference. First operand 357 states and 948 transitions. Second operand 11 states. [2020-10-16 12:29:57,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:57,609 INFO L93 Difference]: Finished difference Result 461 states and 1159 transitions. [2020-10-16 12:29:57,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:57,610 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:57,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:57,611 INFO L225 Difference]: With dead ends: 461 [2020-10-16 12:29:57,611 INFO L226 Difference]: Without dead ends: 457 [2020-10-16 12:29:57,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=152, Invalid=354, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:29:57,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-10-16 12:29:57,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 358. [2020-10-16 12:29:57,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-10-16 12:29:57,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 951 transitions. [2020-10-16 12:29:57,618 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 951 transitions. Word has length 15 [2020-10-16 12:29:57,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:57,618 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 951 transitions. [2020-10-16 12:29:57,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:57,618 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 951 transitions. [2020-10-16 12:29:57,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:57,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:57,619 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:57,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 222 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable225 [2020-10-16 12:29:57,820 INFO L429 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:57,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:57,820 INFO L82 PathProgramCache]: Analyzing trace with hash 440519792, now seen corresponding path program 212 times [2020-10-16 12:29:57,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:57,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107283043] [2020-10-16 12:29:57,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:58,014 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:58,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107283043] [2020-10-16 12:29:58,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817051213] [2020-10-16 12:29:58,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:58,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:29:58,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:58,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:58,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:58,324 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:58,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:58,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:58,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1272538663] [2020-10-16 12:29:58,325 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:58,326 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:58,328 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 33 transitions. [2020-10-16 12:29:58,328 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:58,335 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:58,336 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:58,355 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:58,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:58,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:58,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:58,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:58,356 INFO L87 Difference]: Start difference. First operand 358 states and 951 transitions. Second operand 11 states. [2020-10-16 12:29:58,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:58,609 INFO L93 Difference]: Finished difference Result 468 states and 1178 transitions. [2020-10-16 12:29:58,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:58,611 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:58,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:58,612 INFO L225 Difference]: With dead ends: 468 [2020-10-16 12:29:58,613 INFO L226 Difference]: Without dead ends: 463 [2020-10-16 12:29:58,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:29:58,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2020-10-16 12:29:58,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 354. [2020-10-16 12:29:58,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-10-16 12:29:58,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 939 transitions. [2020-10-16 12:29:58,619 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 939 transitions. Word has length 15 [2020-10-16 12:29:58,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:58,619 INFO L481 AbstractCegarLoop]: Abstraction has 354 states and 939 transitions. [2020-10-16 12:29:58,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:58,619 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 939 transitions. [2020-10-16 12:29:58,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:58,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:58,620 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:58,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226,223 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:58,821 INFO L429 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:58,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:58,822 INFO L82 PathProgramCache]: Analyzing trace with hash 468194670, now seen corresponding path program 213 times [2020-10-16 12:29:58,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:58,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838869554] [2020-10-16 12:29:58,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:58,995 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:58,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838869554] [2020-10-16 12:29:58,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262092096] [2020-10-16 12:29:58,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:59,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:29:59,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:59,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:59,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:02,120 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:02,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:02,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:30:02,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1820990170] [2020-10-16 12:30:02,121 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:02,122 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:02,124 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-10-16 12:30:02,124 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:02,130 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:02,130 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:02,153 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:02,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:30:02,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:02,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:30:02,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:30:02,154 INFO L87 Difference]: Start difference. First operand 354 states and 939 transitions. Second operand 11 states. [2020-10-16 12:30:02,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:02,435 INFO L93 Difference]: Finished difference Result 431 states and 1089 transitions. [2020-10-16 12:30:02,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:30:02,436 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:30:02,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:02,437 INFO L225 Difference]: With dead ends: 431 [2020-10-16 12:30:02,437 INFO L226 Difference]: Without dead ends: 428 [2020-10-16 12:30:02,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:30:02,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2020-10-16 12:30:02,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 357. [2020-10-16 12:30:02,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-10-16 12:30:02,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 948 transitions. [2020-10-16 12:30:02,443 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 948 transitions. Word has length 15 [2020-10-16 12:30:02,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:02,443 INFO L481 AbstractCegarLoop]: Abstraction has 357 states and 948 transitions. [2020-10-16 12:30:02,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:30:02,443 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 948 transitions. [2020-10-16 12:30:02,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:30:02,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:02,444 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:02,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 224 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable227 [2020-10-16 12:30:02,644 INFO L429 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:02,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:02,645 INFO L82 PathProgramCache]: Analyzing trace with hash 468195631, now seen corresponding path program 214 times [2020-10-16 12:30:02,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:02,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007973759] [2020-10-16 12:30:02,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:02,820 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:02,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007973759] [2020-10-16 12:30:02,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951963155] [2020-10-16 12:30:02,821 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:02,863 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:30:02,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:02,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:30:02,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:06,253 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 42 [2020-10-16 12:30:08,144 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:08,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:08,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:30:08,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [243323204] [2020-10-16 12:30:08,145 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:08,146 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:08,149 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-10-16 12:30:08,149 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:08,153 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:08,153 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:08,173 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:08,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:30:08,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:08,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:30:08,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=254, Unknown=1, NotChecked=0, Total=342 [2020-10-16 12:30:08,175 INFO L87 Difference]: Start difference. First operand 357 states and 948 transitions. Second operand 11 states. [2020-10-16 12:30:11,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:11,826 INFO L93 Difference]: Finished difference Result 456 states and 1147 transitions. [2020-10-16 12:30:11,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:30:11,827 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:30:11,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:11,828 INFO L225 Difference]: With dead ends: 456 [2020-10-16 12:30:11,829 INFO L226 Difference]: Without dead ends: 452 [2020-10-16 12:30:11,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=164, Invalid=384, Unknown=4, NotChecked=0, Total=552 [2020-10-16 12:30:11,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-10-16 12:30:11,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 356. [2020-10-16 12:30:11,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-10-16 12:30:11,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 945 transitions. [2020-10-16 12:30:11,834 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 945 transitions. Word has length 15 [2020-10-16 12:30:11,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:11,834 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 945 transitions. [2020-10-16 12:30:11,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:30:11,835 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 945 transitions. [2020-10-16 12:30:11,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:30:11,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:11,835 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:12,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228,225 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:12,036 INFO L429 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:12,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:12,036 INFO L82 PathProgramCache]: Analyzing trace with hash 468224461, now seen corresponding path program 215 times [2020-10-16 12:30:12,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:12,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053418449] [2020-10-16 12:30:12,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:12,239 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:12,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053418449] [2020-10-16 12:30:12,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848923763] [2020-10-16 12:30:12,240 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:12,286 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:30:12,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:12,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:30:12,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:17,596 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-10-16 12:30:20,103 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:20,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:20,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:30:20,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1474192089] [2020-10-16 12:30:20,104 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:20,105 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:20,108 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-10-16 12:30:20,108 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:20,121 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:20,121 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:20,154 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:20,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:30:20,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:20,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:30:20,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=252, Unknown=1, NotChecked=0, Total=342 [2020-10-16 12:30:20,155 INFO L87 Difference]: Start difference. First operand 356 states and 945 transitions. Second operand 11 states. [2020-10-16 12:30:20,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:20,462 INFO L93 Difference]: Finished difference Result 455 states and 1144 transitions. [2020-10-16 12:30:20,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:30:20,464 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:30:20,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:20,465 INFO L225 Difference]: With dead ends: 455 [2020-10-16 12:30:20,465 INFO L226 Difference]: Without dead ends: 451 [2020-10-16 12:30:20,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=162, Invalid=389, Unknown=1, NotChecked=0, Total=552 [2020-10-16 12:30:20,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-10-16 12:30:20,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 357. [2020-10-16 12:30:20,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-10-16 12:30:20,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 948 transitions. [2020-10-16 12:30:20,471 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 948 transitions. Word has length 15 [2020-10-16 12:30:20,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:20,471 INFO L481 AbstractCegarLoop]: Abstraction has 357 states and 948 transitions. [2020-10-16 12:30:20,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:30:20,472 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 948 transitions. [2020-10-16 12:30:20,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:30:20,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:20,472 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:20,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 226 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable229 [2020-10-16 12:30:20,673 INFO L429 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:20,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:20,673 INFO L82 PathProgramCache]: Analyzing trace with hash 468225422, now seen corresponding path program 216 times [2020-10-16 12:30:20,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:20,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995772555] [2020-10-16 12:30:20,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:20,860 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:20,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995772555] [2020-10-16 12:30:20,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463814657] [2020-10-16 12:30:20,861 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:20,904 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 12:30:20,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:20,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:30:20,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:24,672 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:24,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:24,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:30:24,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1294846526] [2020-10-16 12:30:24,672 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:24,673 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:24,675 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-10-16 12:30:24,676 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:24,682 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:24,682 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:24,697 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:24,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:30:24,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:24,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:30:24,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=257, Unknown=1, NotChecked=0, Total=342 [2020-10-16 12:30:24,698 INFO L87 Difference]: Start difference. First operand 357 states and 948 transitions. Second operand 11 states. Received shutdown request... [2020-10-16 12:30:24,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:30:25,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230,227 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:25,143 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-16 12:30:25,148 WARN L235 ceAbstractionStarter]: Timeout [2020-10-16 12:30:25,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:30:25 BasicIcfg [2020-10-16 12:30:25,148 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:30:25,150 INFO L168 Benchmark]: Toolchain (without parser) took 264755.60 ms. Allocated memory was 138.9 MB in the beginning and 272.1 MB in the end (delta: 133.2 MB). Free memory was 102.0 MB in the beginning and 65.3 MB in the end (delta: 36.6 MB). Peak memory consumption was 169.8 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:25,151 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 121.1 MB in the beginning and 120.7 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-16 12:30:25,151 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.27 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 101.6 MB in the beginning and 163.7 MB in the end (delta: -62.1 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:25,151 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.11 ms. Allocated memory is still 203.4 MB. Free memory was 163.7 MB in the beginning and 161.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:25,152 INFO L168 Benchmark]: Boogie Preprocessor took 28.74 ms. Allocated memory is still 203.4 MB. Free memory was 161.6 MB in the beginning and 160.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:25,152 INFO L168 Benchmark]: RCFGBuilder took 386.45 ms. Allocated memory is still 203.4 MB. Free memory was 160.6 MB in the beginning and 139.3 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:25,153 INFO L168 Benchmark]: TraceAbstraction took 263629.53 ms. Allocated memory was 203.4 MB in the beginning and 272.1 MB in the end (delta: 68.7 MB). Free memory was 139.3 MB in the beginning and 65.3 MB in the end (delta: 74.0 MB). Peak memory consumption was 142.7 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:25,155 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 121.1 MB in the beginning and 120.7 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 657.27 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 101.6 MB in the beginning and 163.7 MB in the end (delta: -62.1 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.11 ms. Allocated memory is still 203.4 MB. Free memory was 163.7 MB in the beginning and 161.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.74 ms. Allocated memory is still 203.4 MB. Free memory was 161.6 MB in the beginning and 160.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 386.45 ms. Allocated memory is still 203.4 MB. Free memory was 160.6 MB in the beginning and 139.3 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 263629.53 ms. Allocated memory was 203.4 MB in the beginning and 272.1 MB in the end (delta: 68.7 MB). Free memory was 139.3 MB in the beginning and 65.3 MB in the end (delta: 74.0 MB). Peak memory consumption was 142.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 561 VarBasedMoverChecksPositive, 10 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 20 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.1s, 59 PlacesBefore, 20 PlacesAfterwards, 57 TransitionsBefore, 16 TransitionsAfterwards, 1032 CoEnabledTransitionPairs, 5 FixpointIterations, 12 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 50 TotalNumberOfCompositions, 943 MoverChecksTotal - TimeoutResultAtElement [Line: 711]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 711). Cancelled while BasicCegarLoop was constructing difference of abstraction (357states) and FLOYD_HOARE automaton (currently 9 states, 11 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 22 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 263.4s, OverallIterations: 231, TraceHistogramMax: 7, AutomataDifference: 60.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 3059 SDtfs, 16869 SDslu, 18417 SDs, 0 SdLazy, 12858 SolverSat, 4526 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7769 GetRequests, 2403 SyntacticMatches, 652 SemanticMatches, 4713 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28988 ImplicationChecksByTransitivity, 168.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=360occurred in iteration=220, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 230 MinimizatonAttempts, 14072 StatesRemovedByMinimization, 228 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.3s SsaConstructionTime, 3.9s SatisfiabilityAnalysisTime, 126.7s InterpolantComputationTime, 6264 NumberOfCodeBlocks, 6264 NumberOfCodeBlocksAsserted, 754 NumberOfCheckSat, 5807 ConstructedInterpolants, 39 QuantifiedInterpolants, 718959 SizeOfPredicates, 224 NumberOfNonLiveVariables, 20967 ConjunctsInSsa, 2440 ConjunctsInUnsatCore, 457 InterpolantComputations, 7 PerfectInterpolantSequences, 42/3168 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown