/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/triangular-longest-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-06 00:01:05,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-06 00:01:05,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-06 00:01:05,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-06 00:01:05,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-06 00:01:05,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-06 00:01:05,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-06 00:01:05,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-06 00:01:05,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-06 00:01:05,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-06 00:01:05,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-06 00:01:05,158 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-06 00:01:05,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-06 00:01:05,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-06 00:01:05,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-06 00:01:05,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-06 00:01:05,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-06 00:01:05,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-06 00:01:05,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-06 00:01:05,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-06 00:01:05,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-06 00:01:05,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-06 00:01:05,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-06 00:01:05,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-06 00:01:05,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-06 00:01:05,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-06 00:01:05,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-06 00:01:05,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-06 00:01:05,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-06 00:01:05,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-06 00:01:05,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-06 00:01:05,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-06 00:01:05,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-06 00:01:05,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-06 00:01:05,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-06 00:01:05,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-06 00:01:05,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-06 00:01:05,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-06 00:01:05,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-06 00:01:05,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-06 00:01:05,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-06 00:01:05,182 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-06 00:01:05,203 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-06 00:01:05,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-06 00:01:05,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-06 00:01:05,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-06 00:01:05,205 INFO L138 SettingsManager]: * Use SBE=true [2020-10-06 00:01:05,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-06 00:01:05,205 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-06 00:01:05,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-06 00:01:05,206 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-06 00:01:05,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-06 00:01:05,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-06 00:01:05,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-06 00:01:05,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-06 00:01:05,207 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-06 00:01:05,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-06 00:01:05,207 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-06 00:01:05,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-06 00:01:05,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-06 00:01:05,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-06 00:01:05,208 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-06 00:01:05,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-06 00:01:05,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 00:01:05,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-06 00:01:05,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-06 00:01:05,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-06 00:01:05,209 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-06 00:01:05,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-06 00:01:05,209 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-06 00:01:05,210 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-06 00:01:05,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-06 00:01:05,210 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-06 00:01:05,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-06 00:01:05,493 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-06 00:01:05,497 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-06 00:01:05,498 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-06 00:01:05,498 INFO L275 PluginConnector]: CDTParser initialized [2020-10-06 00:01:05,499 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-2.i [2020-10-06 00:01:05,560 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db997efcd/b9b98cb74894410881fada55ac83c404/FLAG9639253e7 [2020-10-06 00:01:06,034 INFO L306 CDTParser]: Found 1 translation units. [2020-10-06 00:01:06,035 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i [2020-10-06 00:01:06,049 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db997efcd/b9b98cb74894410881fada55ac83c404/FLAG9639253e7 [2020-10-06 00:01:06,391 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db997efcd/b9b98cb74894410881fada55ac83c404 [2020-10-06 00:01:06,401 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-06 00:01:06,403 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-06 00:01:06,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-06 00:01:06,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-06 00:01:06,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-06 00:01:06,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 12:01:06" (1/1) ... [2020-10-06 00:01:06,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ba796e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:06, skipping insertion in model container [2020-10-06 00:01:06,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 12:01:06" (1/1) ... [2020-10-06 00:01:06,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-06 00:01:06,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-06 00:01:06,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 00:01:06,970 INFO L203 MainTranslator]: Completed pre-run [2020-10-06 00:01:07,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 00:01:07,106 INFO L208 MainTranslator]: Completed translation [2020-10-06 00:01:07,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:07 WrapperNode [2020-10-06 00:01:07,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-06 00:01:07,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-06 00:01:07,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-06 00:01:07,108 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-06 00:01:07,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:07" (1/1) ... [2020-10-06 00:01:07,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:07" (1/1) ... [2020-10-06 00:01:07,156 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-06 00:01:07,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-06 00:01:07,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-06 00:01:07,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-06 00:01:07,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:07" (1/1) ... [2020-10-06 00:01:07,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:07" (1/1) ... [2020-10-06 00:01:07,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:07" (1/1) ... [2020-10-06 00:01:07,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:07" (1/1) ... [2020-10-06 00:01:07,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:07" (1/1) ... [2020-10-06 00:01:07,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:07" (1/1) ... [2020-10-06 00:01:07,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:07" (1/1) ... [2020-10-06 00:01:07,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-06 00:01:07,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-06 00:01:07,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-06 00:01:07,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-06 00:01:07,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-06 00:01:07,251 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-06 00:01:07,252 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-06 00:01:07,252 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-06 00:01:07,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-06 00:01:07,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-06 00:01:07,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-06 00:01:07,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-06 00:01:07,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-06 00:01:07,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-06 00:01:07,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-06 00:01:07,257 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-06 00:01:07,548 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-06 00:01:07,549 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-06 00:01:07,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 12:01:07 BoogieIcfgContainer [2020-10-06 00:01:07,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-06 00:01:07,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-06 00:01:07,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-06 00:01:07,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-06 00:01:07,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 12:01:06" (1/3) ... [2020-10-06 00:01:07,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67cc4971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 12:01:07, skipping insertion in model container [2020-10-06 00:01:07,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:07" (2/3) ... [2020-10-06 00:01:07,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67cc4971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 12:01:07, skipping insertion in model container [2020-10-06 00:01:07,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 12:01:07" (3/3) ... [2020-10-06 00:01:07,562 INFO L109 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2020-10-06 00:01:07,573 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-06 00:01:07,574 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-06 00:01:07,583 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-06 00:01:07,584 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-06 00:01:07,616 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,616 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,617 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,617 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,618 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,618 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,619 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,619 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,619 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,620 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,620 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,620 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,621 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,621 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,622 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,622 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,622 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,622 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,623 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,623 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,623 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,624 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,624 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,625 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,625 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,626 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,626 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,626 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,630 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,630 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,631 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,631 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,631 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,631 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,637 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,637 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,637 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,638 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,638 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,638 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:07,655 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-06 00:01:07,679 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 00:01:07,679 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 00:01:07,680 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 00:01:07,680 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 00:01:07,680 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 00:01:07,680 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 00:01:07,681 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 00:01:07,681 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 00:01:07,697 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 55 transitions, 120 flow [2020-10-06 00:01:07,699 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 57 places, 55 transitions, 120 flow [2020-10-06 00:01:07,746 INFO L129 PetriNetUnfolder]: 5/53 cut-off events. [2020-10-06 00:01:07,746 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 00:01:07,753 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 5/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-10-06 00:01:07,756 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 57 places, 55 transitions, 120 flow [2020-10-06 00:01:07,778 INFO L129 PetriNetUnfolder]: 5/53 cut-off events. [2020-10-06 00:01:07,778 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 00:01:07,779 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 5/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-10-06 00:01:07,781 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 924 [2020-10-06 00:01:07,783 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 00:01:08,738 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-10-06 00:01:08,968 INFO L206 etLargeBlockEncoding]: Checked pairs total: 851 [2020-10-06 00:01:08,968 INFO L214 etLargeBlockEncoding]: Total number of compositions: 42 [2020-10-06 00:01:08,973 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 15 transitions, 40 flow [2020-10-06 00:01:08,985 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-06 00:01:08,987 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-06 00:01:08,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-06 00:01:08,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:08,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-06 00:01:08,996 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:09,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:09,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1798862799, now seen corresponding path program 1 times [2020-10-06 00:01:09,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:09,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623339490] [2020-10-06 00:01:09,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:09,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:09,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623339490] [2020-10-06 00:01:09,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:01:09,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:01:09,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1592523825] [2020-10-06 00:01:09,278 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:09,281 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:09,296 INFO L258 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-10-06 00:01:09,296 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:09,301 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:01:09,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:01:09,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:09,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:01:09,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:01:09,321 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-10-06 00:01:09,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:09,386 INFO L93 Difference]: Finished difference Result 75 states and 190 transitions. [2020-10-06 00:01:09,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 00:01:09,388 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-06 00:01:09,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:09,400 INFO L225 Difference]: With dead ends: 75 [2020-10-06 00:01:09,401 INFO L226 Difference]: Without dead ends: 42 [2020-10-06 00:01:09,402 INFO L675 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 [2020-10-06 00:01:09,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-06 00:01:09,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-06 00:01:09,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-06 00:01:09,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 98 transitions. [2020-10-06 00:01:09,448 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 98 transitions. Word has length 6 [2020-10-06 00:01:09,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:09,448 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 98 transitions. [2020-10-06 00:01:09,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:01:09,449 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 98 transitions. [2020-10-06 00:01:09,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-06 00:01:09,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:09,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:09,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-06 00:01:09,450 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:09,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:09,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1777031324, now seen corresponding path program 1 times [2020-10-06 00:01:09,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:09,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086356659] [2020-10-06 00:01:09,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:09,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:09,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086356659] [2020-10-06 00:01:09,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:01:09,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:01:09,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [577791241] [2020-10-06 00:01:09,538 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:09,539 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:09,542 INFO L258 McrAutomatonBuilder]: Finished intersection with 13 states and 16 transitions. [2020-10-06 00:01:09,543 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:09,564 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:01:09,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 00:01:09,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:09,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 00:01:09,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 00:01:09,567 INFO L87 Difference]: Start difference. First operand 42 states and 98 transitions. Second operand 5 states. [2020-10-06 00:01:09,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:09,596 INFO L93 Difference]: Finished difference Result 56 states and 130 transitions. [2020-10-06 00:01:09,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 00:01:09,597 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-06 00:01:09,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:09,598 INFO L225 Difference]: With dead ends: 56 [2020-10-06 00:01:09,598 INFO L226 Difference]: Without dead ends: 50 [2020-10-06 00:01:09,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-10-06 00:01:09,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-06 00:01:09,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2020-10-06 00:01:09,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-06 00:01:09,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 100 transitions. [2020-10-06 00:01:09,606 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 100 transitions. Word has length 8 [2020-10-06 00:01:09,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:09,608 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 100 transitions. [2020-10-06 00:01:09,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 00:01:09,608 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 100 transitions. [2020-10-06 00:01:09,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-06 00:01:09,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:09,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:09,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-06 00:01:09,609 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:09,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:09,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1669374595, now seen corresponding path program 1 times [2020-10-06 00:01:09,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:09,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506547795] [2020-10-06 00:01:09,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:09,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:09,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:09,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506547795] [2020-10-06 00:01:09,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:01:09,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-06 00:01:09,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [471855369] [2020-10-06 00:01:09,681 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:09,682 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:09,685 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-10-06 00:01:09,685 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:09,708 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:09,708 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:09,732 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [466#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-06 00:01:09,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 00:01:09,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:09,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 00:01:09,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-06 00:01:09,734 INFO L87 Difference]: Start difference. First operand 42 states and 100 transitions. Second operand 7 states. [2020-10-06 00:01:09,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:09,850 INFO L93 Difference]: Finished difference Result 62 states and 148 transitions. [2020-10-06 00:01:09,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-06 00:01:09,851 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-10-06 00:01:09,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:09,852 INFO L225 Difference]: With dead ends: 62 [2020-10-06 00:01:09,852 INFO L226 Difference]: Without dead ends: 44 [2020-10-06 00:01:09,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-06 00:01:09,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-06 00:01:09,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2020-10-06 00:01:09,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-06 00:01:09,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 82 transitions. [2020-10-06 00:01:09,859 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 82 transitions. Word has length 10 [2020-10-06 00:01:09,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:09,859 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 82 transitions. [2020-10-06 00:01:09,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 00:01:09,859 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 82 transitions. [2020-10-06 00:01:09,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-06 00:01:09,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:09,861 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:09,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-06 00:01:09,861 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:09,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:09,862 INFO L82 PathProgramCache]: Analyzing trace with hash 976950295, now seen corresponding path program 2 times [2020-10-06 00:01:09,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:09,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526248293] [2020-10-06 00:01:09,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:09,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:09,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526248293] [2020-10-06 00:01:09,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676581086] [2020-10-06 00:01:09,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:10,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:01:10,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:10,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-06 00:01:10,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:10,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:10,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:10,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-06 00:01:10,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1191189107] [2020-10-06 00:01:10,066 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:10,067 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:10,070 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 31 transitions. [2020-10-06 00:01:10,070 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:10,077 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:10,077 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:10,096 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:10,097 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:10,116 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:10,116 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:10,132 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:10,132 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:10,141 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [644#(and (<= ~j~0 4) (< ~i~0 46))] [2020-10-06 00:01:10,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-06 00:01:10,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:10,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-06 00:01:10,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-06 00:01:10,142 INFO L87 Difference]: Start difference. First operand 34 states and 82 transitions. Second operand 8 states. [2020-10-06 00:01:10,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:10,266 INFO L93 Difference]: Finished difference Result 56 states and 131 transitions. [2020-10-06 00:01:10,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-06 00:01:10,267 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-06 00:01:10,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:10,268 INFO L225 Difference]: With dead ends: 56 [2020-10-06 00:01:10,268 INFO L226 Difference]: Without dead ends: 50 [2020-10-06 00:01:10,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-06 00:01:10,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-06 00:01:10,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2020-10-06 00:01:10,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-06 00:01:10,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 104 transitions. [2020-10-06 00:01:10,276 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 104 transitions. Word has length 11 [2020-10-06 00:01:10,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:10,276 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 104 transitions. [2020-10-06 00:01:10,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-06 00:01:10,276 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 104 transitions. [2020-10-06 00:01:10,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-06 00:01:10,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:10,277 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:10,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:10,492 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:10,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:10,493 INFO L82 PathProgramCache]: Analyzing trace with hash 993527545, now seen corresponding path program 3 times [2020-10-06 00:01:10,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:10,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330382216] [2020-10-06 00:01:10,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:10,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:10,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330382216] [2020-10-06 00:01:10,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935943972] [2020-10-06 00:01:10,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:10,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-06 00:01:10,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:10,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-06 00:01:10,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:10,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:10,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:10,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-06 00:01:10,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [270204010] [2020-10-06 00:01:10,670 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:10,671 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:10,673 INFO L258 McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions. [2020-10-06 00:01:10,673 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:10,695 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:10,696 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:10,713 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [832#(and (<= ~j~0 6) (< ~i~0 46))] [2020-10-06 00:01:10,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-06 00:01:10,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:10,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-06 00:01:10,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-06 00:01:10,714 INFO L87 Difference]: Start difference. First operand 42 states and 104 transitions. Second operand 8 states. [2020-10-06 00:01:10,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:10,904 INFO L93 Difference]: Finished difference Result 66 states and 159 transitions. [2020-10-06 00:01:10,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-06 00:01:10,905 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-06 00:01:10,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:10,906 INFO L225 Difference]: With dead ends: 66 [2020-10-06 00:01:10,906 INFO L226 Difference]: Without dead ends: 54 [2020-10-06 00:01:10,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2020-10-06 00:01:10,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-06 00:01:10,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 38. [2020-10-06 00:01:10,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-06 00:01:10,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 91 transitions. [2020-10-06 00:01:10,912 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 91 transitions. Word has length 11 [2020-10-06 00:01:10,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:10,912 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 91 transitions. [2020-10-06 00:01:10,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-06 00:01:10,913 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 91 transitions. [2020-10-06 00:01:10,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 00:01:10,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:10,913 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:11,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:11,125 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:11,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:11,126 INFO L82 PathProgramCache]: Analyzing trace with hash -2048766974, now seen corresponding path program 4 times [2020-10-06 00:01:11,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:11,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003481558] [2020-10-06 00:01:11,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:11,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:11,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003481558] [2020-10-06 00:01:11,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592778408] [2020-10-06 00:01:11,231 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:11,279 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 00:01:11,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:11,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 00:01:11,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:11,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:11,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:11,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-06 00:01:11,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1546111068] [2020-10-06 00:01:11,305 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:11,307 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:11,314 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-06 00:01:11,314 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:11,338 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:11,338 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:11,360 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1034#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-06 00:01:11,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 00:01:11,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:11,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 00:01:11,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-06 00:01:11,361 INFO L87 Difference]: Start difference. First operand 38 states and 91 transitions. Second operand 9 states. [2020-10-06 00:01:11,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:11,518 INFO L93 Difference]: Finished difference Result 64 states and 149 transitions. [2020-10-06 00:01:11,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-06 00:01:11,519 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-06 00:01:11,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:11,520 INFO L225 Difference]: With dead ends: 64 [2020-10-06 00:01:11,520 INFO L226 Difference]: Without dead ends: 58 [2020-10-06 00:01:11,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-10-06 00:01:11,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-06 00:01:11,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 45. [2020-10-06 00:01:11,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-06 00:01:11,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 112 transitions. [2020-10-06 00:01:11,526 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 112 transitions. Word has length 12 [2020-10-06 00:01:11,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:11,527 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 112 transitions. [2020-10-06 00:01:11,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 00:01:11,527 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 112 transitions. [2020-10-06 00:01:11,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 00:01:11,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:11,528 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:11,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:11,729 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:11,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:11,730 INFO L82 PathProgramCache]: Analyzing trace with hash -2032189724, now seen corresponding path program 5 times [2020-10-06 00:01:11,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:11,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867894847] [2020-10-06 00:01:11,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:11,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:11,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867894847] [2020-10-06 00:01:11,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871600553] [2020-10-06 00:01:11,816 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:11,871 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:01:11,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:11,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 00:01:11,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:11,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:11,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:11,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-06 00:01:11,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2059433462] [2020-10-06 00:01:11,917 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:11,918 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:11,924 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-10-06 00:01:11,925 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:11,945 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:11,945 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:11,977 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1244#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-06 00:01:11,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 00:01:11,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:11,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 00:01:11,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-06 00:01:11,978 INFO L87 Difference]: Start difference. First operand 45 states and 112 transitions. Second operand 9 states. [2020-10-06 00:01:12,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:12,193 INFO L93 Difference]: Finished difference Result 63 states and 155 transitions. [2020-10-06 00:01:12,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-06 00:01:12,193 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-06 00:01:12,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:12,194 INFO L225 Difference]: With dead ends: 63 [2020-10-06 00:01:12,194 INFO L226 Difference]: Without dead ends: 51 [2020-10-06 00:01:12,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2020-10-06 00:01:12,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-06 00:01:12,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 38. [2020-10-06 00:01:12,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-06 00:01:12,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 92 transitions. [2020-10-06 00:01:12,209 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 92 transitions. Word has length 12 [2020-10-06 00:01:12,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:12,209 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 92 transitions. [2020-10-06 00:01:12,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 00:01:12,210 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 92 transitions. [2020-10-06 00:01:12,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-06 00:01:12,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:12,210 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:12,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:12,424 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:12,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:12,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1748588394, now seen corresponding path program 6 times [2020-10-06 00:01:12,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:12,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041761892] [2020-10-06 00:01:12,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:12,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:12,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041761892] [2020-10-06 00:01:12,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332387099] [2020-10-06 00:01:12,505 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:12,562 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-06 00:01:12,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:12,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-06 00:01:12,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:12,589 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:12,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:12,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-06 00:01:12,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1140751995] [2020-10-06 00:01:12,591 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:12,592 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:12,597 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 33 transitions. [2020-10-06 00:01:12,597 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:12,615 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:12,616 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:12,638 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:12,639 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:12,650 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:12,650 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:12,659 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:12,659 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:12,668 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1447#(and (<= ~j~0 4) (< ~i~0 46))] [2020-10-06 00:01:12,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-06 00:01:12,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:12,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-06 00:01:12,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-06 00:01:12,669 INFO L87 Difference]: Start difference. First operand 38 states and 92 transitions. Second operand 10 states. [2020-10-06 00:01:12,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:12,850 INFO L93 Difference]: Finished difference Result 60 states and 140 transitions. [2020-10-06 00:01:12,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 00:01:12,851 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-06 00:01:12,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:12,852 INFO L225 Difference]: With dead ends: 60 [2020-10-06 00:01:12,852 INFO L226 Difference]: Without dead ends: 54 [2020-10-06 00:01:12,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-06 00:01:12,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-06 00:01:12,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 46. [2020-10-06 00:01:12,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-06 00:01:12,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 112 transitions. [2020-10-06 00:01:12,858 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 112 transitions. Word has length 13 [2020-10-06 00:01:12,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:12,859 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 112 transitions. [2020-10-06 00:01:12,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-06 00:01:12,859 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 112 transitions. [2020-10-06 00:01:12,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-06 00:01:12,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:12,860 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:13,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:13,073 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:13,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:13,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1297246968, now seen corresponding path program 7 times [2020-10-06 00:01:13,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:13,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214839575] [2020-10-06 00:01:13,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:13,145 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:13,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214839575] [2020-10-06 00:01:13,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739993926] [2020-10-06 00:01:13,147 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:13,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-06 00:01:13,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:13,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:13,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:13,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-06 00:01:13,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1386184489] [2020-10-06 00:01:13,229 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:13,231 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:13,234 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-10-06 00:01:13,234 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:13,264 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:13,265 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:13,284 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1659#(and (<= ~j~0 6) (< ~i~0 46))] [2020-10-06 00:01:13,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-06 00:01:13,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:13,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-06 00:01:13,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-06 00:01:13,286 INFO L87 Difference]: Start difference. First operand 46 states and 112 transitions. Second operand 10 states. [2020-10-06 00:01:13,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:13,539 INFO L93 Difference]: Finished difference Result 74 states and 171 transitions. [2020-10-06 00:01:13,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-06 00:01:13,540 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-06 00:01:13,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:13,541 INFO L225 Difference]: With dead ends: 74 [2020-10-06 00:01:13,541 INFO L226 Difference]: Without dead ends: 68 [2020-10-06 00:01:13,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2020-10-06 00:01:13,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-06 00:01:13,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 48. [2020-10-06 00:01:13,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-06 00:01:13,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 120 transitions. [2020-10-06 00:01:13,547 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 120 transitions. Word has length 13 [2020-10-06 00:01:13,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:13,548 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 120 transitions. [2020-10-06 00:01:13,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-06 00:01:13,548 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 120 transitions. [2020-10-06 00:01:13,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-06 00:01:13,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:13,549 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:13,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:13,762 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:13,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:13,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1313824218, now seen corresponding path program 8 times [2020-10-06 00:01:13,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:13,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761458058] [2020-10-06 00:01:13,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:13,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:13,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761458058] [2020-10-06 00:01:13,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147579076] [2020-10-06 00:01:13,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:13,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:01:13,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:13,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-06 00:01:13,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:13,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:13,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:13,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-06 00:01:13,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1772836476] [2020-10-06 00:01:13,903 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:13,904 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:13,907 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-10-06 00:01:13,907 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:13,920 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:13,920 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:13,936 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1897#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-06 00:01:13,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-06 00:01:13,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:13,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-06 00:01:13,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-06 00:01:13,938 INFO L87 Difference]: Start difference. First operand 48 states and 120 transitions. Second operand 10 states. [2020-10-06 00:01:14,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:14,224 INFO L93 Difference]: Finished difference Result 74 states and 179 transitions. [2020-10-06 00:01:14,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-06 00:01:14,225 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-06 00:01:14,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:14,226 INFO L225 Difference]: With dead ends: 74 [2020-10-06 00:01:14,226 INFO L226 Difference]: Without dead ends: 62 [2020-10-06 00:01:14,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2020-10-06 00:01:14,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-06 00:01:14,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 42. [2020-10-06 00:01:14,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-06 00:01:14,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 101 transitions. [2020-10-06 00:01:14,231 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 101 transitions. Word has length 13 [2020-10-06 00:01:14,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:14,231 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 101 transitions. [2020-10-06 00:01:14,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-06 00:01:14,232 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 101 transitions. [2020-10-06 00:01:14,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-06 00:01:14,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:14,232 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:14,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-06 00:01:14,445 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:14,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:14,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1770024511, now seen corresponding path program 9 times [2020-10-06 00:01:14,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:14,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208934447] [2020-10-06 00:01:14,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:14,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:14,538 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:14,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208934447] [2020-10-06 00:01:14,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478523112] [2020-10-06 00:01:14,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:14,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-06 00:01:14,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:14,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-06 00:01:14,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:14,607 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:14,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:14,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-10-06 00:01:14,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1487459779] [2020-10-06 00:01:14,608 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:14,609 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:14,612 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-06 00:01:14,613 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:14,636 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:14,636 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:14,669 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2131#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-06 00:01:14,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-06 00:01:14,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:14,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-06 00:01:14,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-06 00:01:14,671 INFO L87 Difference]: Start difference. First operand 42 states and 101 transitions. Second operand 11 states. [2020-10-06 00:01:14,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:14,877 INFO L93 Difference]: Finished difference Result 70 states and 162 transitions. [2020-10-06 00:01:14,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 00:01:14,878 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-06 00:01:14,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:14,878 INFO L225 Difference]: With dead ends: 70 [2020-10-06 00:01:14,878 INFO L226 Difference]: Without dead ends: 64 [2020-10-06 00:01:14,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2020-10-06 00:01:14,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-06 00:01:14,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 49. [2020-10-06 00:01:14,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-06 00:01:14,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 120 transitions. [2020-10-06 00:01:14,887 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 120 transitions. Word has length 14 [2020-10-06 00:01:14,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:14,887 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 120 transitions. [2020-10-06 00:01:14,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-06 00:01:14,887 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 120 transitions. [2020-10-06 00:01:14,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-06 00:01:14,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:14,888 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:15,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-06 00:01:15,089 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:15,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:15,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1275810851, now seen corresponding path program 10 times [2020-10-06 00:01:15,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:15,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399828491] [2020-10-06 00:01:15,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:15,166 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:15,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399828491] [2020-10-06 00:01:15,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534104621] [2020-10-06 00:01:15,167 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:15,214 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 00:01:15,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:15,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-06 00:01:15,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:15,235 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:15,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:15,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-10-06 00:01:15,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [501462895] [2020-10-06 00:01:15,236 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:15,237 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:15,240 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-10-06 00:01:15,240 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:15,256 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:15,257 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:15,275 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2367#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-06 00:01:15,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-06 00:01:15,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:15,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-06 00:01:15,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-06 00:01:15,276 INFO L87 Difference]: Start difference. First operand 49 states and 120 transitions. Second operand 11 states. [2020-10-06 00:01:15,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:15,529 INFO L93 Difference]: Finished difference Result 69 states and 163 transitions. [2020-10-06 00:01:15,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-06 00:01:15,530 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-06 00:01:15,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:15,531 INFO L225 Difference]: With dead ends: 69 [2020-10-06 00:01:15,531 INFO L226 Difference]: Without dead ends: 63 [2020-10-06 00:01:15,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=327, Unknown=0, NotChecked=0, Total=462 [2020-10-06 00:01:15,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-06 00:01:15,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 51. [2020-10-06 00:01:15,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-06 00:01:15,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 128 transitions. [2020-10-06 00:01:15,536 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 128 transitions. Word has length 14 [2020-10-06 00:01:15,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:15,536 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 128 transitions. [2020-10-06 00:01:15,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-06 00:01:15,536 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 128 transitions. [2020-10-06 00:01:15,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-06 00:01:15,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:15,537 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:15,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:15,749 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:15,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:15,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1292388101, now seen corresponding path program 11 times [2020-10-06 00:01:15,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:15,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096937690] [2020-10-06 00:01:15,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:15,828 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:15,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096937690] [2020-10-06 00:01:15,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599254752] [2020-10-06 00:01:15,830 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:15,878 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-06 00:01:15,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:15,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-06 00:01:15,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:15,898 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:15,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:15,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-10-06 00:01:15,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [995896031] [2020-10-06 00:01:15,899 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:15,900 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:15,902 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-10-06 00:01:15,903 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:15,919 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:15,920 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:15,934 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2610#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-06 00:01:15,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-06 00:01:15,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:15,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-06 00:01:15,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-06 00:01:15,936 INFO L87 Difference]: Start difference. First operand 51 states and 128 transitions. Second operand 11 states. [2020-10-06 00:01:16,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:16,269 INFO L93 Difference]: Finished difference Result 69 states and 171 transitions. [2020-10-06 00:01:16,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-06 00:01:16,270 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-06 00:01:16,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:16,271 INFO L225 Difference]: With dead ends: 69 [2020-10-06 00:01:16,271 INFO L226 Difference]: Without dead ends: 57 [2020-10-06 00:01:16,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=177, Invalid=375, Unknown=0, NotChecked=0, Total=552 [2020-10-06 00:01:16,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-06 00:01:16,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 42. [2020-10-06 00:01:16,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-06 00:01:16,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 102 transitions. [2020-10-06 00:01:16,275 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 102 transitions. Word has length 14 [2020-10-06 00:01:16,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:16,275 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 102 transitions. [2020-10-06 00:01:16,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-06 00:01:16,275 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 102 transitions. [2020-10-06 00:01:16,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-06 00:01:16,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:16,276 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:16,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:16,488 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:16,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:16,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1061217963, now seen corresponding path program 12 times [2020-10-06 00:01:16,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:16,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594050904] [2020-10-06 00:01:16,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:16,574 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:16,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594050904] [2020-10-06 00:01:16,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274198433] [2020-10-06 00:01:16,575 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:16,628 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-06 00:01:16,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:16,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-06 00:01:16,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:16,643 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:16,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:16,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-10-06 00:01:16,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1966586625] [2020-10-06 00:01:16,644 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:16,646 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:16,648 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-06 00:01:16,649 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:16,659 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:16,659 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:16,679 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:16,680 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:16,693 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:16,693 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:16,700 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:16,700 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:16,712 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2843#(and (<= ~j~0 4) (< ~i~0 46))] [2020-10-06 00:01:16,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-06 00:01:16,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:16,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-06 00:01:16,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-06 00:01:16,714 INFO L87 Difference]: Start difference. First operand 42 states and 102 transitions. Second operand 12 states. [2020-10-06 00:01:16,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:16,963 INFO L93 Difference]: Finished difference Result 66 states and 154 transitions. [2020-10-06 00:01:16,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-06 00:01:16,964 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-06 00:01:16,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:16,965 INFO L225 Difference]: With dead ends: 66 [2020-10-06 00:01:16,965 INFO L226 Difference]: Without dead ends: 60 [2020-10-06 00:01:16,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-10-06 00:01:16,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-06 00:01:16,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2020-10-06 00:01:16,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-06 00:01:16,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 122 transitions. [2020-10-06 00:01:16,974 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 122 transitions. Word has length 15 [2020-10-06 00:01:16,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:16,974 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 122 transitions. [2020-10-06 00:01:16,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-06 00:01:16,974 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 122 transitions. [2020-10-06 00:01:16,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-06 00:01:16,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:16,975 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:17,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-06 00:01:17,176 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:17,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:17,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1113836343, now seen corresponding path program 13 times [2020-10-06 00:01:17,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:17,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949086366] [2020-10-06 00:01:17,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:17,264 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:17,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949086366] [2020-10-06 00:01:17,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986647280] [2020-10-06 00:01:17,265 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:17,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-06 00:01:17,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:17,326 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:17,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:17,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-10-06 00:01:17,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1017666095] [2020-10-06 00:01:17,328 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:17,329 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:17,331 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 25 transitions. [2020-10-06 00:01:17,332 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:17,340 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:17,341 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:17,361 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3081#(and (<= ~j~0 6) (< ~i~0 46))] [2020-10-06 00:01:17,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-06 00:01:17,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:17,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-06 00:01:17,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-06 00:01:17,363 INFO L87 Difference]: Start difference. First operand 50 states and 122 transitions. Second operand 12 states. [2020-10-06 00:01:17,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:17,651 INFO L93 Difference]: Finished difference Result 82 states and 188 transitions. [2020-10-06 00:01:17,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-06 00:01:17,651 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-06 00:01:17,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:17,652 INFO L225 Difference]: With dead ends: 82 [2020-10-06 00:01:17,652 INFO L226 Difference]: Without dead ends: 76 [2020-10-06 00:01:17,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-06 00:01:17,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-06 00:01:17,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 52. [2020-10-06 00:01:17,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-06 00:01:17,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 128 transitions. [2020-10-06 00:01:17,656 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 128 transitions. Word has length 15 [2020-10-06 00:01:17,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:17,656 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 128 transitions. [2020-10-06 00:01:17,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-06 00:01:17,657 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 128 transitions. [2020-10-06 00:01:17,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-06 00:01:17,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:17,657 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:17,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-06 00:01:17,866 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:17,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:17,866 INFO L82 PathProgramCache]: Analyzing trace with hash -135295591, now seen corresponding path program 14 times [2020-10-06 00:01:17,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:17,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374879466] [2020-10-06 00:01:17,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:17,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:17,956 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:17,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374879466] [2020-10-06 00:01:17,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464829429] [2020-10-06 00:01:17,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:18,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:01:18,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:18,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-06 00:01:18,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:18,036 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:18,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:18,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-10-06 00:01:18,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [77387830] [2020-10-06 00:01:18,037 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:18,038 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:18,040 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 25 transitions. [2020-10-06 00:01:18,040 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:18,051 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:18,052 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:18,070 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3347#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-06 00:01:18,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-06 00:01:18,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:18,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-06 00:01:18,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-06 00:01:18,071 INFO L87 Difference]: Start difference. First operand 52 states and 128 transitions. Second operand 12 states. [2020-10-06 00:01:18,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:18,381 INFO L93 Difference]: Finished difference Result 81 states and 189 transitions. [2020-10-06 00:01:18,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-06 00:01:18,381 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-06 00:01:18,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:18,382 INFO L225 Difference]: With dead ends: 81 [2020-10-06 00:01:18,382 INFO L226 Difference]: Without dead ends: 75 [2020-10-06 00:01:18,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=209, Invalid=493, Unknown=0, NotChecked=0, Total=702 [2020-10-06 00:01:18,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-06 00:01:18,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 54. [2020-10-06 00:01:18,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-06 00:01:18,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 136 transitions. [2020-10-06 00:01:18,389 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 136 transitions. Word has length 15 [2020-10-06 00:01:18,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:18,390 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 136 transitions. [2020-10-06 00:01:18,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-06 00:01:18,390 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 136 transitions. [2020-10-06 00:01:18,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-06 00:01:18,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:18,391 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:18,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-06 00:01:18,602 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:18,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:18,602 INFO L82 PathProgramCache]: Analyzing trace with hash -118718341, now seen corresponding path program 15 times [2020-10-06 00:01:18,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:18,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40882705] [2020-10-06 00:01:18,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:18,673 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:18,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40882705] [2020-10-06 00:01:18,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8898977] [2020-10-06 00:01:18,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:18,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-06 00:01:18,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:18,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-06 00:01:18,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:18,747 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:18,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:18,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-10-06 00:01:18,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [23880399] [2020-10-06 00:01:18,748 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:18,749 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:18,752 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 25 transitions. [2020-10-06 00:01:18,752 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:18,754 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:18,754 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:18,778 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3620#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-06 00:01:18,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-06 00:01:18,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:18,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-06 00:01:18,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-06 00:01:18,779 INFO L87 Difference]: Start difference. First operand 54 states and 136 transitions. Second operand 12 states. [2020-10-06 00:01:19,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:19,162 INFO L93 Difference]: Finished difference Result 82 states and 199 transitions. [2020-10-06 00:01:19,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-06 00:01:19,163 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-06 00:01:19,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:19,164 INFO L225 Difference]: With dead ends: 82 [2020-10-06 00:01:19,165 INFO L226 Difference]: Without dead ends: 70 [2020-10-06 00:01:19,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2020-10-06 00:01:19,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-06 00:01:19,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 46. [2020-10-06 00:01:19,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-06 00:01:19,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 111 transitions. [2020-10-06 00:01:19,169 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 111 transitions. Word has length 15 [2020-10-06 00:01:19,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:19,169 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 111 transitions. [2020-10-06 00:01:19,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-06 00:01:19,170 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 111 transitions. [2020-10-06 00:01:19,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-06 00:01:19,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:19,170 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:19,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:19,376 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:19,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:19,377 INFO L82 PathProgramCache]: Analyzing trace with hash -186489920, now seen corresponding path program 16 times [2020-10-06 00:01:19,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:19,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364944856] [2020-10-06 00:01:19,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:19,491 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:19,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364944856] [2020-10-06 00:01:19,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320507906] [2020-10-06 00:01:19,492 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:19,541 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 00:01:19,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:19,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-06 00:01:19,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:19,563 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:19,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:19,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-10-06 00:01:19,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [814472737] [2020-10-06 00:01:19,564 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:19,565 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:19,568 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 32 transitions. [2020-10-06 00:01:19,568 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:19,573 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:19,573 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:19,600 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3886#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-06 00:01:19,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-06 00:01:19,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:19,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-06 00:01:19,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-06 00:01:19,601 INFO L87 Difference]: Start difference. First operand 46 states and 111 transitions. Second operand 13 states. [2020-10-06 00:01:19,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:19,838 INFO L93 Difference]: Finished difference Result 78 states and 180 transitions. [2020-10-06 00:01:19,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-06 00:01:19,838 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-10-06 00:01:19,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:19,840 INFO L225 Difference]: With dead ends: 78 [2020-10-06 00:01:19,840 INFO L226 Difference]: Without dead ends: 72 [2020-10-06 00:01:19,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2020-10-06 00:01:19,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-06 00:01:19,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 53. [2020-10-06 00:01:19,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-06 00:01:19,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 130 transitions. [2020-10-06 00:01:19,843 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 130 transitions. Word has length 16 [2020-10-06 00:01:19,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:19,843 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 130 transitions. [2020-10-06 00:01:19,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-06 00:01:19,844 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 130 transitions. [2020-10-06 00:01:19,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-06 00:01:19,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:19,844 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:20,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-06 00:01:20,053 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:20,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:20,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1988564386, now seen corresponding path program 17 times [2020-10-06 00:01:20,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:20,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756994598] [2020-10-06 00:01:20,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:20,163 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:20,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756994598] [2020-10-06 00:01:20,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272667250] [2020-10-06 00:01:20,164 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:20,224 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-06 00:01:20,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:20,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-06 00:01:20,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:20,240 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:20,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:20,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-10-06 00:01:20,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [661908300] [2020-10-06 00:01:20,241 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:20,243 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:20,246 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 30 transitions. [2020-10-06 00:01:20,246 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:20,249 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:20,249 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:20,276 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4150#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-06 00:01:20,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-06 00:01:20,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:20,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-06 00:01:20,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-06 00:01:20,277 INFO L87 Difference]: Start difference. First operand 53 states and 130 transitions. Second operand 13 states. [2020-10-06 00:01:20,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:20,597 INFO L93 Difference]: Finished difference Result 75 states and 176 transitions. [2020-10-06 00:01:20,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-06 00:01:20,598 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-10-06 00:01:20,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:20,599 INFO L225 Difference]: With dead ends: 75 [2020-10-06 00:01:20,599 INFO L226 Difference]: Without dead ends: 69 [2020-10-06 00:01:20,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2020-10-06 00:01:20,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-06 00:01:20,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 55. [2020-10-06 00:01:20,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-06 00:01:20,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 136 transitions. [2020-10-06 00:01:20,606 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 136 transitions. Word has length 16 [2020-10-06 00:01:20,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:20,606 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 136 transitions. [2020-10-06 00:01:20,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-06 00:01:20,607 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 136 transitions. [2020-10-06 00:01:20,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-06 00:01:20,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:20,611 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:20,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:20,825 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:20,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:20,826 INFO L82 PathProgramCache]: Analyzing trace with hash 739432452, now seen corresponding path program 18 times [2020-10-06 00:01:20,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:20,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697416620] [2020-10-06 00:01:20,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:20,925 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:20,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697416620] [2020-10-06 00:01:20,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360602173] [2020-10-06 00:01:20,925 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:20,995 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-06 00:01:20,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:20,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-06 00:01:20,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:21,011 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:21,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:21,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-10-06 00:01:21,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [364903332] [2020-10-06 00:01:21,012 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:21,014 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:21,016 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 30 transitions. [2020-10-06 00:01:21,017 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:21,021 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:21,021 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:21,048 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4419#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-06 00:01:21,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-06 00:01:21,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:21,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-06 00:01:21,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-06 00:01:21,049 INFO L87 Difference]: Start difference. First operand 55 states and 136 transitions. Second operand 13 states. [2020-10-06 00:01:21,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:21,388 INFO L93 Difference]: Finished difference Result 75 states and 179 transitions. [2020-10-06 00:01:21,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-06 00:01:21,391 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-10-06 00:01:21,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:21,391 INFO L225 Difference]: With dead ends: 75 [2020-10-06 00:01:21,392 INFO L226 Difference]: Without dead ends: 69 [2020-10-06 00:01:21,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=220, Invalid=536, Unknown=0, NotChecked=0, Total=756 [2020-10-06 00:01:21,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-06 00:01:21,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 57. [2020-10-06 00:01:21,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-06 00:01:21,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 144 transitions. [2020-10-06 00:01:21,399 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 144 transitions. Word has length 16 [2020-10-06 00:01:21,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:21,400 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 144 transitions. [2020-10-06 00:01:21,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-06 00:01:21,400 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 144 transitions. [2020-10-06 00:01:21,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-06 00:01:21,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:21,401 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:21,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:21,602 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:21,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:21,602 INFO L82 PathProgramCache]: Analyzing trace with hash 756009702, now seen corresponding path program 19 times [2020-10-06 00:01:21,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:21,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193810305] [2020-10-06 00:01:21,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:21,697 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:21,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193810305] [2020-10-06 00:01:21,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729305360] [2020-10-06 00:01:21,698 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:21,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:21,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-06 00:01:21,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:21,770 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:21,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:21,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-10-06 00:01:21,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [488205339] [2020-10-06 00:01:21,771 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:21,773 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:21,775 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 30 transitions. [2020-10-06 00:01:21,776 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:21,781 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:21,781 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:21,811 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4696#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-06 00:01:21,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-06 00:01:21,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:21,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-06 00:01:21,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-06 00:01:21,813 INFO L87 Difference]: Start difference. First operand 57 states and 144 transitions. Second operand 13 states. [2020-10-06 00:01:22,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:22,247 INFO L93 Difference]: Finished difference Result 75 states and 187 transitions. [2020-10-06 00:01:22,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-06 00:01:22,248 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-10-06 00:01:22,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:22,250 INFO L225 Difference]: With dead ends: 75 [2020-10-06 00:01:22,251 INFO L226 Difference]: Without dead ends: 63 [2020-10-06 00:01:22,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=594, Unknown=0, NotChecked=0, Total=870 [2020-10-06 00:01:22,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-06 00:01:22,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 46. [2020-10-06 00:01:22,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-06 00:01:22,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 112 transitions. [2020-10-06 00:01:22,255 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 112 transitions. Word has length 16 [2020-10-06 00:01:22,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:22,255 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 112 transitions. [2020-10-06 00:01:22,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-06 00:01:22,256 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 112 transitions. [2020-10-06 00:01:22,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 00:01:22,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:22,256 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:22,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-06 00:01:22,469 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:22,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:22,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1923197356, now seen corresponding path program 20 times [2020-10-06 00:01:22,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:22,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051627832] [2020-10-06 00:01:22,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:22,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:22,609 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:22,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051627832] [2020-10-06 00:01:22,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255759055] [2020-10-06 00:01:22,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:22,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:01:22,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:22,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-06 00:01:22,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:22,692 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:22,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:22,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-10-06 00:01:22,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [997750703] [2020-10-06 00:01:22,694 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:22,695 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:22,698 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 37 transitions. [2020-10-06 00:01:22,698 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:22,707 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:22,707 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:22,751 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:22,751 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:22,767 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:22,768 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:22,782 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:22,782 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:22,789 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4959#(and (<= ~j~0 4) (< ~i~0 46))] [2020-10-06 00:01:22,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-06 00:01:22,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:22,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-06 00:01:22,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-10-06 00:01:22,790 INFO L87 Difference]: Start difference. First operand 46 states and 112 transitions. Second operand 14 states. [2020-10-06 00:01:23,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:23,044 INFO L93 Difference]: Finished difference Result 72 states and 168 transitions. [2020-10-06 00:01:23,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-06 00:01:23,045 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-10-06 00:01:23,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:23,046 INFO L225 Difference]: With dead ends: 72 [2020-10-06 00:01:23,046 INFO L226 Difference]: Without dead ends: 66 [2020-10-06 00:01:23,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=428, Unknown=0, NotChecked=0, Total=600 [2020-10-06 00:01:23,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-06 00:01:23,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-10-06 00:01:23,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-06 00:01:23,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 132 transitions. [2020-10-06 00:01:23,050 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 132 transitions. Word has length 17 [2020-10-06 00:01:23,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:23,050 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 132 transitions. [2020-10-06 00:01:23,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-06 00:01:23,050 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 132 transitions. [2020-10-06 00:01:23,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 00:01:23,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:23,051 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:23,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:23,261 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:23,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:23,261 INFO L82 PathProgramCache]: Analyzing trace with hash 949884854, now seen corresponding path program 21 times [2020-10-06 00:01:23,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:23,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597949704] [2020-10-06 00:01:23,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:23,369 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:23,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597949704] [2020-10-06 00:01:23,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211985307] [2020-10-06 00:01:23,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:23,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-06 00:01:23,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:23,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-06 00:01:23,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:23,439 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:23,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:23,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-10-06 00:01:23,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [266230414] [2020-10-06 00:01:23,440 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:23,441 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:23,444 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 27 transitions. [2020-10-06 00:01:23,444 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:23,445 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:23,445 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:23,473 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [5223#(and (<= ~j~0 6) (< ~i~0 46))] [2020-10-06 00:01:23,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-06 00:01:23,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:23,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-06 00:01:23,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-10-06 00:01:23,474 INFO L87 Difference]: Start difference. First operand 54 states and 132 transitions. Second operand 14 states. [2020-10-06 00:01:23,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:23,787 INFO L93 Difference]: Finished difference Result 92 states and 210 transitions. [2020-10-06 00:01:23,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-06 00:01:23,788 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-10-06 00:01:23,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:23,789 INFO L225 Difference]: With dead ends: 92 [2020-10-06 00:01:23,789 INFO L226 Difference]: Without dead ends: 86 [2020-10-06 00:01:23,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=221, Invalid=591, Unknown=0, NotChecked=0, Total=812 [2020-10-06 00:01:23,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-06 00:01:23,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 56. [2020-10-06 00:01:23,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-06 00:01:23,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 138 transitions. [2020-10-06 00:01:23,795 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 138 transitions. Word has length 17 [2020-10-06 00:01:23,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:23,795 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 138 transitions. [2020-10-06 00:01:23,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-06 00:01:23,796 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 138 transitions. [2020-10-06 00:01:23,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 00:01:23,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:23,796 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:24,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-06 00:01:24,008 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:24,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:24,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1170028136, now seen corresponding path program 22 times [2020-10-06 00:01:24,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:24,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590551401] [2020-10-06 00:01:24,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:24,106 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:24,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590551401] [2020-10-06 00:01:24,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319576221] [2020-10-06 00:01:24,106 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:24,158 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 00:01:24,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:24,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-06 00:01:24,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:24,177 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:24,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:24,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-10-06 00:01:24,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2019063842] [2020-10-06 00:01:24,178 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:24,179 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:24,181 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 27 transitions. [2020-10-06 00:01:24,181 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:24,192 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:24,192 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:24,211 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [5519#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-06 00:01:24,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-06 00:01:24,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:24,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-06 00:01:24,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-06 00:01:24,212 INFO L87 Difference]: Start difference. First operand 56 states and 138 transitions. Second operand 14 states. [2020-10-06 00:01:24,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:24,633 INFO L93 Difference]: Finished difference Result 89 states and 206 transitions. [2020-10-06 00:01:24,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-06 00:01:24,634 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-10-06 00:01:24,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:24,635 INFO L225 Difference]: With dead ends: 89 [2020-10-06 00:01:24,635 INFO L226 Difference]: Without dead ends: 83 [2020-10-06 00:01:24,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=260, Invalid=670, Unknown=0, NotChecked=0, Total=930 [2020-10-06 00:01:24,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-06 00:01:24,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 58. [2020-10-06 00:01:24,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-06 00:01:24,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 144 transitions. [2020-10-06 00:01:24,639 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 144 transitions. Word has length 17 [2020-10-06 00:01:24,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:24,639 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 144 transitions. [2020-10-06 00:01:24,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-06 00:01:24,639 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 144 transitions. [2020-10-06 00:01:24,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 00:01:24,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:24,640 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:24,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-06 00:01:24,850 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:24,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:24,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1875807226, now seen corresponding path program 23 times [2020-10-06 00:01:24,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:24,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031454720] [2020-10-06 00:01:24,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:24,938 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:24,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031454720] [2020-10-06 00:01:24,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750815904] [2020-10-06 00:01:24,939 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:24,992 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-10-06 00:01:24,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:24,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-06 00:01:24,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:25,031 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:25,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:25,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-10-06 00:01:25,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1209218434] [2020-10-06 00:01:25,032 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:25,033 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:25,037 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 27 transitions. [2020-10-06 00:01:25,037 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:25,038 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:25,038 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:25,067 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [5820#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-06 00:01:25,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-06 00:01:25,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:25,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-06 00:01:25,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-06 00:01:25,068 INFO L87 Difference]: Start difference. First operand 58 states and 144 transitions. Second operand 14 states. [2020-10-06 00:01:25,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:25,623 INFO L93 Difference]: Finished difference Result 89 states and 209 transitions. [2020-10-06 00:01:25,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-06 00:01:25,624 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-10-06 00:01:25,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:25,625 INFO L225 Difference]: With dead ends: 89 [2020-10-06 00:01:25,625 INFO L226 Difference]: Without dead ends: 83 [2020-10-06 00:01:25,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=315, Invalid=741, Unknown=0, NotChecked=0, Total=1056 [2020-10-06 00:01:25,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-06 00:01:25,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 60. [2020-10-06 00:01:25,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-06 00:01:25,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 152 transitions. [2020-10-06 00:01:25,631 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 152 transitions. Word has length 17 [2020-10-06 00:01:25,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:25,631 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 152 transitions. [2020-10-06 00:01:25,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-06 00:01:25,632 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 152 transitions. [2020-10-06 00:01:25,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 00:01:25,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:25,632 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:25,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:25,845 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:25,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:25,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1892384476, now seen corresponding path program 24 times [2020-10-06 00:01:25,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:25,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904117799] [2020-10-06 00:01:25,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:25,938 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:25,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904117799] [2020-10-06 00:01:25,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647876338] [2020-10-06 00:01:25,939 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:25,992 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-10-06 00:01:25,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:25,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-06 00:01:25,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:26,009 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:26,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:26,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-10-06 00:01:26,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [480538476] [2020-10-06 00:01:26,010 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:26,012 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:26,015 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 27 transitions. [2020-10-06 00:01:26,015 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:26,016 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:26,016 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:26,045 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [6129#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-06 00:01:26,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-06 00:01:26,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:26,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-06 00:01:26,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-06 00:01:26,046 INFO L87 Difference]: Start difference. First operand 60 states and 152 transitions. Second operand 14 states. [2020-10-06 00:01:26,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:26,545 INFO L93 Difference]: Finished difference Result 90 states and 219 transitions. [2020-10-06 00:01:26,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-06 00:01:26,545 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-10-06 00:01:26,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:26,546 INFO L225 Difference]: With dead ends: 90 [2020-10-06 00:01:26,546 INFO L226 Difference]: Without dead ends: 78 [2020-10-06 00:01:26,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=384, Invalid=806, Unknown=0, NotChecked=0, Total=1190 [2020-10-06 00:01:26,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-06 00:01:26,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 50. [2020-10-06 00:01:26,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-06 00:01:26,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 121 transitions. [2020-10-06 00:01:26,550 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 121 transitions. Word has length 17 [2020-10-06 00:01:26,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:26,551 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 121 transitions. [2020-10-06 00:01:26,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-06 00:01:26,551 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 121 transitions. [2020-10-06 00:01:26,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-06 00:01:26,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:26,551 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:26,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-06 00:01:26,753 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:26,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:26,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1171829247, now seen corresponding path program 25 times [2020-10-06 00:01:26,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:26,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590389425] [2020-10-06 00:01:26,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:26,865 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:26,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590389425] [2020-10-06 00:01:26,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799432088] [2020-10-06 00:01:26,866 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:26,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-06 00:01:26,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:26,932 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:26,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:26,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-10-06 00:01:26,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1218812809] [2020-10-06 00:01:26,933 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:26,935 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:26,938 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 34 transitions. [2020-10-06 00:01:26,939 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:26,952 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:26,953 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:26,970 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [6427#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-06 00:01:26,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-06 00:01:26,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:26,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-06 00:01:26,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-06 00:01:26,972 INFO L87 Difference]: Start difference. First operand 50 states and 121 transitions. Second operand 15 states. [2020-10-06 00:01:27,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:27,262 INFO L93 Difference]: Finished difference Result 86 states and 198 transitions. [2020-10-06 00:01:27,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-06 00:01:27,265 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-10-06 00:01:27,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:27,266 INFO L225 Difference]: With dead ends: 86 [2020-10-06 00:01:27,266 INFO L226 Difference]: Without dead ends: 80 [2020-10-06 00:01:27,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2020-10-06 00:01:27,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-06 00:01:27,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 57. [2020-10-06 00:01:27,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-06 00:01:27,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 140 transitions. [2020-10-06 00:01:27,270 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 140 transitions. Word has length 18 [2020-10-06 00:01:27,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:27,270 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 140 transitions. [2020-10-06 00:01:27,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-06 00:01:27,270 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 140 transitions. [2020-10-06 00:01:27,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-06 00:01:27,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:27,271 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:27,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:27,472 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:27,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:27,472 INFO L82 PathProgramCache]: Analyzing trace with hash -250055839, now seen corresponding path program 26 times [2020-10-06 00:01:27,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:27,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430651497] [2020-10-06 00:01:27,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:27,591 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:27,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430651497] [2020-10-06 00:01:27,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635425485] [2020-10-06 00:01:27,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:27,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:01:27,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:27,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-06 00:01:27,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:27,658 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:27,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:27,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-10-06 00:01:27,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [547262585] [2020-10-06 00:01:27,659 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:27,661 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:27,664 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 32 transitions. [2020-10-06 00:01:27,664 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:27,677 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:27,678 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:27,698 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [6719#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-06 00:01:27,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-06 00:01:27,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:27,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-06 00:01:27,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2020-10-06 00:01:27,699 INFO L87 Difference]: Start difference. First operand 57 states and 140 transitions. Second operand 15 states. [2020-10-06 00:01:28,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:28,061 INFO L93 Difference]: Finished difference Result 83 states and 194 transitions. [2020-10-06 00:01:28,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-06 00:01:28,062 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-10-06 00:01:28,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:28,063 INFO L225 Difference]: With dead ends: 83 [2020-10-06 00:01:28,063 INFO L226 Difference]: Without dead ends: 77 [2020-10-06 00:01:28,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=231, Invalid=639, Unknown=0, NotChecked=0, Total=870 [2020-10-06 00:01:28,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-06 00:01:28,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 59. [2020-10-06 00:01:28,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-06 00:01:28,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 146 transitions. [2020-10-06 00:01:28,067 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 146 transitions. Word has length 18 [2020-10-06 00:01:28,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:28,067 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 146 transitions. [2020-10-06 00:01:28,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-06 00:01:28,068 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 146 transitions. [2020-10-06 00:01:28,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-06 00:01:28,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:28,068 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:28,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-06 00:01:28,278 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:28,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:28,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1924998467, now seen corresponding path program 27 times [2020-10-06 00:01:28,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:28,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350765207] [2020-10-06 00:01:28,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:28,416 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:28,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350765207] [2020-10-06 00:01:28,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345770012] [2020-10-06 00:01:28,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:28,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-06 00:01:28,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:28,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-06 00:01:28,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:28,495 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:28,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:28,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-10-06 00:01:28,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [850855699] [2020-10-06 00:01:28,496 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:28,497 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:28,501 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 32 transitions. [2020-10-06 00:01:28,501 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:28,512 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:28,513 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:28,531 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [7016#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-06 00:01:28,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-06 00:01:28,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:28,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-06 00:01:28,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-06 00:01:28,532 INFO L87 Difference]: Start difference. First operand 59 states and 146 transitions. Second operand 15 states. [2020-10-06 00:01:28,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:28,947 INFO L93 Difference]: Finished difference Result 81 states and 192 transitions. [2020-10-06 00:01:28,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-06 00:01:28,948 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-10-06 00:01:28,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:28,949 INFO L225 Difference]: With dead ends: 81 [2020-10-06 00:01:28,949 INFO L226 Difference]: Without dead ends: 75 [2020-10-06 00:01:28,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2020-10-06 00:01:28,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-06 00:01:28,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 61. [2020-10-06 00:01:28,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-06 00:01:28,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 152 transitions. [2020-10-06 00:01:28,954 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 152 transitions. Word has length 18 [2020-10-06 00:01:28,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:28,954 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 152 transitions. [2020-10-06 00:01:28,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-06 00:01:28,954 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 152 transitions. [2020-10-06 00:01:28,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-06 00:01:28,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:28,955 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:29,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-06 00:01:29,167 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:29,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:29,167 INFO L82 PathProgramCache]: Analyzing trace with hash 675866533, now seen corresponding path program 28 times [2020-10-06 00:01:29,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:29,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818915018] [2020-10-06 00:01:29,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:29,268 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:29,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818915018] [2020-10-06 00:01:29,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936613351] [2020-10-06 00:01:29,269 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:29,316 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 00:01:29,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:29,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-06 00:01:29,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:29,343 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:29,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:29,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-10-06 00:01:29,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [868062854] [2020-10-06 00:01:29,344 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:29,346 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:29,348 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 32 transitions. [2020-10-06 00:01:29,349 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:29,359 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:29,359 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:29,379 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [7319#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-06 00:01:29,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-06 00:01:29,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:29,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-06 00:01:29,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2020-10-06 00:01:29,380 INFO L87 Difference]: Start difference. First operand 61 states and 152 transitions. Second operand 15 states. [2020-10-06 00:01:29,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:29,859 INFO L93 Difference]: Finished difference Result 81 states and 195 transitions. [2020-10-06 00:01:29,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-06 00:01:29,859 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-10-06 00:01:29,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:29,861 INFO L225 Difference]: With dead ends: 81 [2020-10-06 00:01:29,861 INFO L226 Difference]: Without dead ends: 75 [2020-10-06 00:01:29,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=795, Unknown=0, NotChecked=0, Total=1122 [2020-10-06 00:01:29,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-06 00:01:29,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2020-10-06 00:01:29,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-06 00:01:29,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 160 transitions. [2020-10-06 00:01:29,865 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 160 transitions. Word has length 18 [2020-10-06 00:01:29,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:29,866 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 160 transitions. [2020-10-06 00:01:29,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-06 00:01:29,866 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 160 transitions. [2020-10-06 00:01:29,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-06 00:01:29,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:29,867 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:30,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:30,077 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:30,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:30,077 INFO L82 PathProgramCache]: Analyzing trace with hash 692443783, now seen corresponding path program 29 times [2020-10-06 00:01:30,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:30,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140319116] [2020-10-06 00:01:30,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:30,180 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:30,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140319116] [2020-10-06 00:01:30,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287939450] [2020-10-06 00:01:30,181 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:30,227 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-10-06 00:01:30,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:30,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-06 00:01:30,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:30,259 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:30,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:30,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-10-06 00:01:30,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1104773290] [2020-10-06 00:01:30,260 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:30,262 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:30,266 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 32 transitions. [2020-10-06 00:01:30,266 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:30,306 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:30,306 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:30,324 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [7630#(and (<= ~j~0 16) (< ~i~0 46))] [2020-10-06 00:01:30,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-06 00:01:30,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:30,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-06 00:01:30,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-06 00:01:30,325 INFO L87 Difference]: Start difference. First operand 63 states and 160 transitions. Second operand 15 states. [2020-10-06 00:01:30,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:30,841 INFO L93 Difference]: Finished difference Result 81 states and 203 transitions. [2020-10-06 00:01:30,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-06 00:01:30,845 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-10-06 00:01:30,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:30,846 INFO L225 Difference]: With dead ends: 81 [2020-10-06 00:01:30,846 INFO L226 Difference]: Without dead ends: 69 [2020-10-06 00:01:30,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=863, Unknown=0, NotChecked=0, Total=1260 [2020-10-06 00:01:30,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-06 00:01:30,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 50. [2020-10-06 00:01:30,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-06 00:01:30,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 122 transitions. [2020-10-06 00:01:30,850 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 122 transitions. Word has length 18 [2020-10-06 00:01:30,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:30,850 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 122 transitions. [2020-10-06 00:01:30,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-06 00:01:30,850 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 122 transitions. [2020-10-06 00:01:30,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-06 00:01:30,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:30,853 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:31,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:31,065 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:31,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:31,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1356705901, now seen corresponding path program 30 times [2020-10-06 00:01:31,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:31,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672469783] [2020-10-06 00:01:31,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:31,237 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:31,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672469783] [2020-10-06 00:01:31,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261153185] [2020-10-06 00:01:31,238 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:31,305 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-10-06 00:01:31,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:31,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-06 00:01:31,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:31,326 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:31,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:31,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-10-06 00:01:31,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1425752520] [2020-10-06 00:01:31,327 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:31,330 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:31,335 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 39 transitions. [2020-10-06 00:01:31,336 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:31,337 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:31,337 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:31,360 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:31,360 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:31,380 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:31,380 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:31,389 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:31,390 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:31,398 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [7923#(and (<= ~j~0 4) (< ~i~0 46))] [2020-10-06 00:01:31,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-06 00:01:31,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:31,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-06 00:01:31,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-06 00:01:31,399 INFO L87 Difference]: Start difference. First operand 50 states and 122 transitions. Second operand 16 states. [2020-10-06 00:01:31,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:31,694 INFO L93 Difference]: Finished difference Result 78 states and 182 transitions. [2020-10-06 00:01:31,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-06 00:01:31,694 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 19 [2020-10-06 00:01:31,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:31,695 INFO L225 Difference]: With dead ends: 78 [2020-10-06 00:01:31,695 INFO L226 Difference]: Without dead ends: 72 [2020-10-06 00:01:31,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=579, Unknown=0, NotChecked=0, Total=812 [2020-10-06 00:01:31,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-06 00:01:31,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 58. [2020-10-06 00:01:31,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-06 00:01:31,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 142 transitions. [2020-10-06 00:01:31,700 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 142 transitions. Word has length 19 [2020-10-06 00:01:31,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:31,701 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 142 transitions. [2020-10-06 00:01:31,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-06 00:01:31,701 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 142 transitions. [2020-10-06 00:01:31,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-06 00:01:31,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:31,701 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:31,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-10-06 00:01:31,912 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:31,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:31,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1988673419, now seen corresponding path program 31 times [2020-10-06 00:01:31,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:31,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821086967] [2020-10-06 00:01:31,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:32,060 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:32,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821086967] [2020-10-06 00:01:32,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041293591] [2020-10-06 00:01:32,061 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:32,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:32,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-06 00:01:32,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:32,122 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:32,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:32,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-10-06 00:01:32,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1218931108] [2020-10-06 00:01:32,123 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:32,125 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:32,129 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 29 transitions. [2020-10-06 00:01:32,129 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:32,133 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:32,134 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:32,157 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [8213#(and (<= ~j~0 6) (< ~i~0 46))] [2020-10-06 00:01:32,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-06 00:01:32,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:32,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-06 00:01:32,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-10-06 00:01:32,158 INFO L87 Difference]: Start difference. First operand 58 states and 142 transitions. Second operand 16 states. [2020-10-06 00:01:32,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:32,590 INFO L93 Difference]: Finished difference Result 102 states and 232 transitions. [2020-10-06 00:01:32,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-06 00:01:32,591 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 19 [2020-10-06 00:01:32,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:32,592 INFO L225 Difference]: With dead ends: 102 [2020-10-06 00:01:32,592 INFO L226 Difference]: Without dead ends: 96 [2020-10-06 00:01:32,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2020-10-06 00:01:32,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-06 00:01:32,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 60. [2020-10-06 00:01:32,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-06 00:01:32,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 148 transitions. [2020-10-06 00:01:32,600 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 148 transitions. Word has length 19 [2020-10-06 00:01:32,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:32,601 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 148 transitions. [2020-10-06 00:01:32,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-06 00:01:32,601 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 148 transitions. [2020-10-06 00:01:32,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-06 00:01:32,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:32,602 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:32,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:32,813 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:32,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:32,813 INFO L82 PathProgramCache]: Analyzing trace with hash 884408791, now seen corresponding path program 32 times [2020-10-06 00:01:32,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:32,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385121224] [2020-10-06 00:01:32,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:32,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:32,933 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:32,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385121224] [2020-10-06 00:01:32,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203069539] [2020-10-06 00:01:32,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:32,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:01:32,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:32,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-06 00:01:32,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:32,999 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:32,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:33,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-10-06 00:01:33,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1297792951] [2020-10-06 00:01:33,000 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:33,002 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:33,005 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 29 transitions. [2020-10-06 00:01:33,006 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:33,010 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:33,011 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:33,033 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [8539#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-06 00:01:33,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-06 00:01:33,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:33,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-06 00:01:33,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-10-06 00:01:33,035 INFO L87 Difference]: Start difference. First operand 60 states and 148 transitions. Second operand 16 states. [2020-10-06 00:01:33,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:33,481 INFO L93 Difference]: Finished difference Result 99 states and 228 transitions. [2020-10-06 00:01:33,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-06 00:01:33,482 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 19 [2020-10-06 00:01:33,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:33,483 INFO L225 Difference]: With dead ends: 99 [2020-10-06 00:01:33,483 INFO L226 Difference]: Without dead ends: 93 [2020-10-06 00:01:33,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=321, Invalid=869, Unknown=0, NotChecked=0, Total=1190 [2020-10-06 00:01:33,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-06 00:01:33,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 62. [2020-10-06 00:01:33,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-06 00:01:33,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 154 transitions. [2020-10-06 00:01:33,487 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 154 transitions. Word has length 19 [2020-10-06 00:01:33,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:33,488 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 154 transitions. [2020-10-06 00:01:33,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-06 00:01:33,488 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 154 transitions. [2020-10-06 00:01:33,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-06 00:01:33,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:33,489 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:33,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-10-06 00:01:33,701 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:33,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:33,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1235504199, now seen corresponding path program 33 times [2020-10-06 00:01:33,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:33,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345395886] [2020-10-06 00:01:33,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:33,822 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:33,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345395886] [2020-10-06 00:01:33,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192755202] [2020-10-06 00:01:33,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:33,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-10-06 00:01:33,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:33,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-06 00:01:33,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:33,893 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:33,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:33,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-10-06 00:01:33,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [804120393] [2020-10-06 00:01:33,893 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:33,895 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:33,899 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 29 transitions. [2020-10-06 00:01:33,899 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:33,910 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:33,910 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:33,930 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [8870#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-06 00:01:33,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-06 00:01:33,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:33,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-06 00:01:33,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-10-06 00:01:33,931 INFO L87 Difference]: Start difference. First operand 62 states and 154 transitions. Second operand 16 states. [2020-10-06 00:01:34,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:34,460 INFO L93 Difference]: Finished difference Result 97 states and 226 transitions. [2020-10-06 00:01:34,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-06 00:01:34,461 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 19 [2020-10-06 00:01:34,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:34,462 INFO L225 Difference]: With dead ends: 97 [2020-10-06 00:01:34,462 INFO L226 Difference]: Without dead ends: 91 [2020-10-06 00:01:34,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=374, Invalid=958, Unknown=0, NotChecked=0, Total=1332 [2020-10-06 00:01:34,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-06 00:01:34,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 64. [2020-10-06 00:01:34,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-06 00:01:34,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 160 transitions. [2020-10-06 00:01:34,467 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 160 transitions. Word has length 19 [2020-10-06 00:01:34,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:34,467 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 160 transitions. [2020-10-06 00:01:34,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-06 00:01:34,467 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 160 transitions. [2020-10-06 00:01:34,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-06 00:01:34,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:34,468 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:34,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-10-06 00:01:34,669 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:34,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:34,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1810331163, now seen corresponding path program 34 times [2020-10-06 00:01:34,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:34,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742943957] [2020-10-06 00:01:34,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:34,782 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:34,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742943957] [2020-10-06 00:01:34,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942656403] [2020-10-06 00:01:34,783 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:34,828 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 00:01:34,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:34,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-06 00:01:34,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:34,848 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:34,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:34,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-10-06 00:01:34,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1405327250] [2020-10-06 00:01:34,849 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:34,851 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:34,854 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 29 transitions. [2020-10-06 00:01:34,855 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:34,865 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:34,865 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:34,885 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [9207#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-06 00:01:34,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-06 00:01:34,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:34,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-06 00:01:34,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-06 00:01:34,886 INFO L87 Difference]: Start difference. First operand 64 states and 160 transitions. Second operand 16 states. [2020-10-06 00:01:35,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:35,456 INFO L93 Difference]: Finished difference Result 97 states and 229 transitions. [2020-10-06 00:01:35,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-06 00:01:35,460 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 19 [2020-10-06 00:01:35,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:35,461 INFO L225 Difference]: With dead ends: 97 [2020-10-06 00:01:35,461 INFO L226 Difference]: Without dead ends: 91 [2020-10-06 00:01:35,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=443, Invalid=1039, Unknown=0, NotChecked=0, Total=1482 [2020-10-06 00:01:35,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-06 00:01:35,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 66. [2020-10-06 00:01:35,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-06 00:01:35,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 168 transitions. [2020-10-06 00:01:35,465 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 168 transitions. Word has length 19 [2020-10-06 00:01:35,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:35,466 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 168 transitions. [2020-10-06 00:01:35,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-06 00:01:35,466 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 168 transitions. [2020-10-06 00:01:35,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-06 00:01:35,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:35,466 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:35,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-06 00:01:35,675 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:35,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:35,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1826908413, now seen corresponding path program 35 times [2020-10-06 00:01:35,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:35,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580763542] [2020-10-06 00:01:35,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:35,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:35,780 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:35,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580763542] [2020-10-06 00:01:35,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576613379] [2020-10-06 00:01:35,781 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:35,853 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-06 00:01:35,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:35,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-06 00:01:35,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:35,890 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:35,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:35,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-10-06 00:01:35,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1381627890] [2020-10-06 00:01:35,892 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:35,893 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:35,897 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 29 transitions. [2020-10-06 00:01:35,898 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:35,910 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:35,911 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:35,934 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [9552#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-06 00:01:35,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-06 00:01:35,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:35,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-06 00:01:35,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-06 00:01:35,935 INFO L87 Difference]: Start difference. First operand 66 states and 168 transitions. Second operand 16 states. [2020-10-06 00:01:36,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:36,520 INFO L93 Difference]: Finished difference Result 98 states and 239 transitions. [2020-10-06 00:01:36,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-06 00:01:36,521 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 19 [2020-10-06 00:01:36,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:36,521 INFO L225 Difference]: With dead ends: 98 [2020-10-06 00:01:36,521 INFO L226 Difference]: Without dead ends: 86 [2020-10-06 00:01:36,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=526, Invalid=1114, Unknown=0, NotChecked=0, Total=1640 [2020-10-06 00:01:36,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-06 00:01:36,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 54. [2020-10-06 00:01:36,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-06 00:01:36,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 131 transitions. [2020-10-06 00:01:36,525 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 131 transitions. Word has length 19 [2020-10-06 00:01:36,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:36,525 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 131 transitions. [2020-10-06 00:01:36,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-06 00:01:36,525 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 131 transitions. [2020-10-06 00:01:36,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-06 00:01:36,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:36,526 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:36,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-06 00:01:36,735 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:36,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:36,735 INFO L82 PathProgramCache]: Analyzing trace with hash 846490750, now seen corresponding path program 36 times [2020-10-06 00:01:36,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:36,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128915601] [2020-10-06 00:01:36,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:36,894 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:36,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128915601] [2020-10-06 00:01:36,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15305396] [2020-10-06 00:01:36,895 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:36,941 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-10-06 00:01:36,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:36,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-06 00:01:36,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:36,955 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:36,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:36,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-10-06 00:01:36,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [170094756] [2020-10-06 00:01:36,956 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:36,958 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:36,962 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 36 transitions. [2020-10-06 00:01:36,963 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:36,979 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:36,979 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:37,009 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [9882#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-06 00:01:37,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-06 00:01:37,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:37,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-06 00:01:37,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-10-06 00:01:37,010 INFO L87 Difference]: Start difference. First operand 54 states and 131 transitions. Second operand 17 states. [2020-10-06 00:01:37,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:37,365 INFO L93 Difference]: Finished difference Result 94 states and 216 transitions. [2020-10-06 00:01:37,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-06 00:01:37,366 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20 [2020-10-06 00:01:37,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:37,367 INFO L225 Difference]: With dead ends: 94 [2020-10-06 00:01:37,367 INFO L226 Difference]: Without dead ends: 88 [2020-10-06 00:01:37,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2020-10-06 00:01:37,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-06 00:01:37,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 61. [2020-10-06 00:01:37,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-06 00:01:37,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 150 transitions. [2020-10-06 00:01:37,372 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 150 transitions. Word has length 20 [2020-10-06 00:01:37,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:37,372 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 150 transitions. [2020-10-06 00:01:37,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-06 00:01:37,372 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 150 transitions. [2020-10-06 00:01:37,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-06 00:01:37,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:37,373 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:37,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-10-06 00:01:37,581 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:37,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:37,581 INFO L82 PathProgramCache]: Analyzing trace with hash 214523232, now seen corresponding path program 37 times [2020-10-06 00:01:37,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:37,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577690033] [2020-10-06 00:01:37,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:37,722 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:37,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577690033] [2020-10-06 00:01:37,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599049832] [2020-10-06 00:01:37,723 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:37,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-06 00:01:37,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:37,814 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:37,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:37,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-10-06 00:01:37,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1033048084] [2020-10-06 00:01:37,815 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:37,817 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:37,821 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 34 transitions. [2020-10-06 00:01:37,821 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:37,829 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:37,829 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:37,857 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [10202#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-06 00:01:37,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-06 00:01:37,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:37,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-06 00:01:37,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-10-06 00:01:37,858 INFO L87 Difference]: Start difference. First operand 61 states and 150 transitions. Second operand 17 states. [2020-10-06 00:01:38,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:38,228 INFO L93 Difference]: Finished difference Result 91 states and 212 transitions. [2020-10-06 00:01:38,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-06 00:01:38,229 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20 [2020-10-06 00:01:38,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:38,230 INFO L225 Difference]: With dead ends: 91 [2020-10-06 00:01:38,230 INFO L226 Difference]: Without dead ends: 85 [2020-10-06 00:01:38,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=294, Invalid=828, Unknown=0, NotChecked=0, Total=1122 [2020-10-06 00:01:38,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-06 00:01:38,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 63. [2020-10-06 00:01:38,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-06 00:01:38,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 156 transitions. [2020-10-06 00:01:38,234 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 156 transitions. Word has length 20 [2020-10-06 00:01:38,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:38,234 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 156 transitions. [2020-10-06 00:01:38,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-06 00:01:38,235 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 156 transitions. [2020-10-06 00:01:38,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-06 00:01:38,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:38,235 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:38,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-06 00:01:38,444 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:38,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:38,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1207361854, now seen corresponding path program 38 times [2020-10-06 00:01:38,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:38,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68562586] [2020-10-06 00:01:38,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:38,581 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:38,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68562586] [2020-10-06 00:01:38,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844601492] [2020-10-06 00:01:38,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:38,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:01:38,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:38,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-06 00:01:38,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:38,670 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:38,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:38,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-10-06 00:01:38,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [696040912] [2020-10-06 00:01:38,671 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:38,672 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:38,677 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 34 transitions. [2020-10-06 00:01:38,677 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:38,679 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:38,679 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:38,709 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [10527#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-06 00:01:38,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-06 00:01:38,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:38,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-06 00:01:38,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-10-06 00:01:38,710 INFO L87 Difference]: Start difference. First operand 63 states and 156 transitions. Second operand 17 states. [2020-10-06 00:01:39,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:39,214 INFO L93 Difference]: Finished difference Result 89 states and 210 transitions. [2020-10-06 00:01:39,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-06 00:01:39,215 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20 [2020-10-06 00:01:39,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:39,216 INFO L225 Difference]: With dead ends: 89 [2020-10-06 00:01:39,216 INFO L226 Difference]: Without dead ends: 83 [2020-10-06 00:01:39,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=332, Invalid=928, Unknown=0, NotChecked=0, Total=1260 [2020-10-06 00:01:39,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-06 00:01:39,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 65. [2020-10-06 00:01:39,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-06 00:01:39,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 162 transitions. [2020-10-06 00:01:39,220 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 162 transitions. Word has length 20 [2020-10-06 00:01:39,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:39,220 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 162 transitions. [2020-10-06 00:01:39,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-06 00:01:39,220 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 162 transitions. [2020-10-06 00:01:39,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-06 00:01:39,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:39,221 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:39,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-06 00:01:39,425 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:39,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:39,425 INFO L82 PathProgramCache]: Analyzing trace with hash 967692452, now seen corresponding path program 39 times [2020-10-06 00:01:39,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:39,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926612285] [2020-10-06 00:01:39,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:39,545 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:39,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926612285] [2020-10-06 00:01:39,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111442915] [2020-10-06 00:01:39,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:39,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-10-06 00:01:39,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:39,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-06 00:01:39,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:39,626 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:39,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:39,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-10-06 00:01:39,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [273048940] [2020-10-06 00:01:39,627 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:39,629 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:39,633 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 34 transitions. [2020-10-06 00:01:39,634 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:39,642 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:39,643 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:39,672 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [10858#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-06 00:01:39,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-06 00:01:39,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:39,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-06 00:01:39,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-10-06 00:01:39,673 INFO L87 Difference]: Start difference. First operand 65 states and 162 transitions. Second operand 17 states. [2020-10-06 00:01:40,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:40,241 INFO L93 Difference]: Finished difference Result 87 states and 208 transitions. [2020-10-06 00:01:40,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-06 00:01:40,245 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20 [2020-10-06 00:01:40,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:40,246 INFO L225 Difference]: With dead ends: 87 [2020-10-06 00:01:40,246 INFO L226 Difference]: Without dead ends: 81 [2020-10-06 00:01:40,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=386, Invalid=1020, Unknown=0, NotChecked=0, Total=1406 [2020-10-06 00:01:40,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-06 00:01:40,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 67. [2020-10-06 00:01:40,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-06 00:01:40,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 168 transitions. [2020-10-06 00:01:40,250 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 168 transitions. Word has length 20 [2020-10-06 00:01:40,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:40,251 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 168 transitions. [2020-10-06 00:01:40,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-06 00:01:40,251 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 168 transitions. [2020-10-06 00:01:40,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-06 00:01:40,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:40,251 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:40,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:40,452 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:40,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:40,453 INFO L82 PathProgramCache]: Analyzing trace with hash -281439482, now seen corresponding path program 40 times [2020-10-06 00:01:40,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:40,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421808488] [2020-10-06 00:01:40,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:40,589 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:40,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421808488] [2020-10-06 00:01:40,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324413721] [2020-10-06 00:01:40,590 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:40,666 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 00:01:40,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:40,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-06 00:01:40,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:40,714 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:40,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:40,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-10-06 00:01:40,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [956862567] [2020-10-06 00:01:40,715 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:40,717 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:40,722 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 34 transitions. [2020-10-06 00:01:40,722 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:40,734 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:40,735 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:40,806 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [11195#(and (<= ~j~0 16) (< ~i~0 46))] [2020-10-06 00:01:40,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-06 00:01:40,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:40,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-06 00:01:40,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-10-06 00:01:40,808 INFO L87 Difference]: Start difference. First operand 67 states and 168 transitions. Second operand 17 states. [2020-10-06 00:01:41,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:41,448 INFO L93 Difference]: Finished difference Result 87 states and 211 transitions. [2020-10-06 00:01:41,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-06 00:01:41,448 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20 [2020-10-06 00:01:41,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:41,449 INFO L225 Difference]: With dead ends: 87 [2020-10-06 00:01:41,450 INFO L226 Difference]: Without dead ends: 81 [2020-10-06 00:01:41,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=456, Invalid=1104, Unknown=0, NotChecked=0, Total=1560 [2020-10-06 00:01:41,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-06 00:01:41,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 69. [2020-10-06 00:01:41,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-06 00:01:41,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 176 transitions. [2020-10-06 00:01:41,454 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 176 transitions. Word has length 20 [2020-10-06 00:01:41,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:41,454 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 176 transitions. [2020-10-06 00:01:41,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-06 00:01:41,454 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 176 transitions. [2020-10-06 00:01:41,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-06 00:01:41,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:41,455 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:41,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:41,658 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:41,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:41,658 INFO L82 PathProgramCache]: Analyzing trace with hash -264862232, now seen corresponding path program 41 times [2020-10-06 00:01:41,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:41,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092770783] [2020-10-06 00:01:41,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:41,782 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:41,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092770783] [2020-10-06 00:01:41,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49541759] [2020-10-06 00:01:41,783 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:41,826 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-06 00:01:41,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:41,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-06 00:01:41,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:41,848 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:41,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:41,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-10-06 00:01:41,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [303206763] [2020-10-06 00:01:41,849 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:41,851 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:41,854 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 34 transitions. [2020-10-06 00:01:41,854 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:41,861 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:41,862 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:41,884 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [11540#(and (<= ~j~0 18) (< ~i~0 46))] [2020-10-06 00:01:41,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-06 00:01:41,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:41,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-06 00:01:41,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-10-06 00:01:41,884 INFO L87 Difference]: Start difference. First operand 69 states and 176 transitions. Second operand 17 states. [2020-10-06 00:01:42,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:42,545 INFO L93 Difference]: Finished difference Result 87 states and 219 transitions. [2020-10-06 00:01:42,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-06 00:01:42,546 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20 [2020-10-06 00:01:42,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:42,547 INFO L225 Difference]: With dead ends: 87 [2020-10-06 00:01:42,547 INFO L226 Difference]: Without dead ends: 75 [2020-10-06 00:01:42,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=540, Invalid=1182, Unknown=0, NotChecked=0, Total=1722 [2020-10-06 00:01:42,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-06 00:01:42,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 54. [2020-10-06 00:01:42,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-06 00:01:42,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 132 transitions. [2020-10-06 00:01:42,551 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 132 transitions. Word has length 20 [2020-10-06 00:01:42,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:42,551 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 132 transitions. [2020-10-06 00:01:42,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-06 00:01:42,551 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 132 transitions. [2020-10-06 00:01:42,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 00:01:42,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:42,551 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:42,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:42,752 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:42,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:42,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1875703058, now seen corresponding path program 42 times [2020-10-06 00:01:42,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:42,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477329922] [2020-10-06 00:01:42,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:42,930 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:42,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477329922] [2020-10-06 00:01:42,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522348048] [2020-10-06 00:01:42,930 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:42,984 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-10-06 00:01:42,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:42,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-06 00:01:42,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:43,000 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:43,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:43,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2020-10-06 00:01:43,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2047473342] [2020-10-06 00:01:43,001 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:43,004 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:43,023 INFO L258 McrAutomatonBuilder]: Finished intersection with 31 states and 41 transitions. [2020-10-06 00:01:43,023 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:43,026 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:43,026 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:43,049 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:43,049 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:43,070 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:43,070 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:43,083 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:43,083 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:43,092 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [11863#(and (<= ~j~0 4) (< ~i~0 46))] [2020-10-06 00:01:43,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-06 00:01:43,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:43,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-06 00:01:43,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-10-06 00:01:43,094 INFO L87 Difference]: Start difference. First operand 54 states and 132 transitions. Second operand 18 states. [2020-10-06 00:01:43,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:43,507 INFO L93 Difference]: Finished difference Result 84 states and 196 transitions. [2020-10-06 00:01:43,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-06 00:01:43,507 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21 [2020-10-06 00:01:43,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:43,508 INFO L225 Difference]: With dead ends: 84 [2020-10-06 00:01:43,509 INFO L226 Difference]: Without dead ends: 78 [2020-10-06 00:01:43,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=304, Invalid=752, Unknown=0, NotChecked=0, Total=1056 [2020-10-06 00:01:43,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-06 00:01:43,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 62. [2020-10-06 00:01:43,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-06 00:01:43,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 152 transitions. [2020-10-06 00:01:43,513 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 152 transitions. Word has length 21 [2020-10-06 00:01:43,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:43,514 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 152 transitions. [2020-10-06 00:01:43,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-06 00:01:43,514 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 152 transitions. [2020-10-06 00:01:43,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 00:01:43,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:43,517 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:43,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-06 00:01:43,718 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:43,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:43,718 INFO L82 PathProgramCache]: Analyzing trace with hash 145306996, now seen corresponding path program 43 times [2020-10-06 00:01:43,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:43,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058278531] [2020-10-06 00:01:43,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:43,908 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:43,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058278531] [2020-10-06 00:01:43,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651344395] [2020-10-06 00:01:43,909 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:43,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:43,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-06 00:01:43,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:44,003 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:44,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:44,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2020-10-06 00:01:44,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1892894486] [2020-10-06 00:01:44,004 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:44,007 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:44,011 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 31 transitions. [2020-10-06 00:01:44,012 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:44,013 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:44,013 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:44,042 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [12179#(and (<= ~j~0 6) (< ~i~0 46))] [2020-10-06 00:01:44,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-06 00:01:44,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:44,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-06 00:01:44,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-10-06 00:01:44,044 INFO L87 Difference]: Start difference. First operand 62 states and 152 transitions. Second operand 18 states. [2020-10-06 00:01:44,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:44,517 INFO L93 Difference]: Finished difference Result 112 states and 254 transitions. [2020-10-06 00:01:44,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-06 00:01:44,518 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21 [2020-10-06 00:01:44,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:44,519 INFO L225 Difference]: With dead ends: 112 [2020-10-06 00:01:44,519 INFO L226 Difference]: Without dead ends: 106 [2020-10-06 00:01:44,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=357, Invalid=975, Unknown=0, NotChecked=0, Total=1332 [2020-10-06 00:01:44,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-06 00:01:44,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 64. [2020-10-06 00:01:44,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-06 00:01:44,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 158 transitions. [2020-10-06 00:01:44,524 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 158 transitions. Word has length 21 [2020-10-06 00:01:44,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:44,524 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 158 transitions. [2020-10-06 00:01:44,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-06 00:01:44,524 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 158 transitions. [2020-10-06 00:01:44,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 00:01:44,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:44,525 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:44,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:44,736 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:44,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:44,737 INFO L82 PathProgramCache]: Analyzing trace with hash -486660522, now seen corresponding path program 44 times [2020-10-06 00:01:44,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:44,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271669701] [2020-10-06 00:01:44,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:44,885 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:44,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271669701] [2020-10-06 00:01:44,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446920970] [2020-10-06 00:01:44,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:44,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:01:44,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:44,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-06 00:01:44,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:44,953 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:44,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:44,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2020-10-06 00:01:44,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1745489462] [2020-10-06 00:01:44,954 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:44,956 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:44,960 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 31 transitions. [2020-10-06 00:01:44,961 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:44,963 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:44,963 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:44,989 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [12535#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-06 00:01:44,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-06 00:01:44,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:44,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-06 00:01:44,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-06 00:01:44,990 INFO L87 Difference]: Start difference. First operand 64 states and 158 transitions. Second operand 18 states. [2020-10-06 00:01:45,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:45,502 INFO L93 Difference]: Finished difference Result 109 states and 250 transitions. [2020-10-06 00:01:45,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-06 00:01:45,502 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21 [2020-10-06 00:01:45,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:45,504 INFO L225 Difference]: With dead ends: 109 [2020-10-06 00:01:45,504 INFO L226 Difference]: Without dead ends: 103 [2020-10-06 00:01:45,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=392, Invalid=1090, Unknown=0, NotChecked=0, Total=1482 [2020-10-06 00:01:45,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-06 00:01:45,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 66. [2020-10-06 00:01:45,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-06 00:01:45,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 164 transitions. [2020-10-06 00:01:45,510 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 164 transitions. Word has length 21 [2020-10-06 00:01:45,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:45,510 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 164 transitions. [2020-10-06 00:01:45,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-06 00:01:45,510 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 164 transitions. [2020-10-06 00:01:45,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 00:01:45,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:45,511 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:45,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:45,721 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:45,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:45,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1908545608, now seen corresponding path program 45 times [2020-10-06 00:01:45,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:45,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881158548] [2020-10-06 00:01:45,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:45,877 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:45,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881158548] [2020-10-06 00:01:45,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798976805] [2020-10-06 00:01:45,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:45,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-10-06 00:01:45,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:45,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-06 00:01:45,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:45,953 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:45,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:45,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2020-10-06 00:01:45,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [774614395] [2020-10-06 00:01:45,954 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:45,956 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:45,961 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 31 transitions. [2020-10-06 00:01:45,961 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:45,971 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:45,972 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:45,991 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [12896#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-06 00:01:45,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-06 00:01:45,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:45,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-06 00:01:45,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-10-06 00:01:45,993 INFO L87 Difference]: Start difference. First operand 66 states and 164 transitions. Second operand 18 states. [2020-10-06 00:01:46,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:46,560 INFO L93 Difference]: Finished difference Result 107 states and 248 transitions. [2020-10-06 00:01:46,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-06 00:01:46,560 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21 [2020-10-06 00:01:46,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:46,561 INFO L225 Difference]: With dead ends: 107 [2020-10-06 00:01:46,561 INFO L226 Difference]: Without dead ends: 101 [2020-10-06 00:01:46,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=443, Invalid=1197, Unknown=0, NotChecked=0, Total=1640 [2020-10-06 00:01:46,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-06 00:01:46,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 68. [2020-10-06 00:01:46,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-06 00:01:46,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 170 transitions. [2020-10-06 00:01:46,566 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 170 transitions. Word has length 21 [2020-10-06 00:01:46,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:46,566 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 170 transitions. [2020-10-06 00:01:46,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-06 00:01:46,566 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 170 transitions. [2020-10-06 00:01:46,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 00:01:46,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:46,567 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:46,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-10-06 00:01:46,767 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:46,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:46,768 INFO L82 PathProgramCache]: Analyzing trace with hash 266508698, now seen corresponding path program 46 times [2020-10-06 00:01:46,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:46,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462160780] [2020-10-06 00:01:46,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:46,905 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:46,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462160780] [2020-10-06 00:01:46,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819053906] [2020-10-06 00:01:46,906 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:46,950 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 00:01:46,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:46,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-06 00:01:46,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:46,973 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:46,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:46,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2020-10-06 00:01:46,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2033413061] [2020-10-06 00:01:46,974 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:46,976 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:46,980 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 31 transitions. [2020-10-06 00:01:46,980 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:46,981 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:46,982 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:47,011 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [13263#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-06 00:01:47,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-06 00:01:47,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:47,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-06 00:01:47,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2020-10-06 00:01:47,012 INFO L87 Difference]: Start difference. First operand 68 states and 170 transitions. Second operand 18 states. [2020-10-06 00:01:47,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:47,660 INFO L93 Difference]: Finished difference Result 105 states and 246 transitions. [2020-10-06 00:01:47,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 00:01:47,661 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21 [2020-10-06 00:01:47,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:47,662 INFO L225 Difference]: With dead ends: 105 [2020-10-06 00:01:47,662 INFO L226 Difference]: Without dead ends: 99 [2020-10-06 00:01:47,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=510, Invalid=1296, Unknown=0, NotChecked=0, Total=1806 [2020-10-06 00:01:47,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-06 00:01:47,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 70. [2020-10-06 00:01:47,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-06 00:01:47,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 176 transitions. [2020-10-06 00:01:47,666 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 176 transitions. Word has length 21 [2020-10-06 00:01:47,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:47,666 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 176 transitions. [2020-10-06 00:01:47,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-06 00:01:47,666 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 176 transitions. [2020-10-06 00:01:47,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 00:01:47,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:47,667 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:47,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-10-06 00:01:47,877 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:47,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:47,877 INFO L82 PathProgramCache]: Analyzing trace with hash -982623236, now seen corresponding path program 47 times [2020-10-06 00:01:47,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:47,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197174182] [2020-10-06 00:01:47,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:48,010 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:48,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197174182] [2020-10-06 00:01:48,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681977579] [2020-10-06 00:01:48,011 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:48,055 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-10-06 00:01:48,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:48,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-06 00:01:48,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:48,075 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:48,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:48,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2020-10-06 00:01:48,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1550580951] [2020-10-06 00:01:48,075 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:48,078 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:48,081 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 31 transitions. [2020-10-06 00:01:48,081 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:48,091 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:48,091 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:48,111 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [13636#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-06 00:01:48,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-06 00:01:48,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:48,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-06 00:01:48,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-10-06 00:01:48,112 INFO L87 Difference]: Start difference. First operand 70 states and 176 transitions. Second operand 18 states. [2020-10-06 00:01:48,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:48,824 INFO L93 Difference]: Finished difference Result 105 states and 249 transitions. [2020-10-06 00:01:48,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-06 00:01:48,824 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21 [2020-10-06 00:01:48,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:48,825 INFO L225 Difference]: With dead ends: 105 [2020-10-06 00:01:48,825 INFO L226 Difference]: Without dead ends: 99 [2020-10-06 00:01:48,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=593, Invalid=1387, Unknown=0, NotChecked=0, Total=1980 [2020-10-06 00:01:48,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-06 00:01:48,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 72. [2020-10-06 00:01:48,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-06 00:01:48,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 184 transitions. [2020-10-06 00:01:48,829 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 184 transitions. Word has length 21 [2020-10-06 00:01:48,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:48,829 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 184 transitions. [2020-10-06 00:01:48,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-06 00:01:48,829 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 184 transitions. [2020-10-06 00:01:48,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 00:01:48,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:48,830 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:49,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-10-06 00:01:49,030 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:49,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:49,031 INFO L82 PathProgramCache]: Analyzing trace with hash -966045986, now seen corresponding path program 48 times [2020-10-06 00:01:49,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:49,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026426572] [2020-10-06 00:01:49,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:49,151 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:49,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026426572] [2020-10-06 00:01:49,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119071132] [2020-10-06 00:01:49,151 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:49,204 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-10-06 00:01:49,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:49,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-06 00:01:49,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:49,226 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:49,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:49,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2020-10-06 00:01:49,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [496122320] [2020-10-06 00:01:49,226 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:49,229 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:49,232 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 31 transitions. [2020-10-06 00:01:49,233 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:49,235 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:49,235 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:49,260 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [14017#(and (<= ~j~0 16) (< ~i~0 46))] [2020-10-06 00:01:49,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-06 00:01:49,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:49,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-06 00:01:49,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-10-06 00:01:49,261 INFO L87 Difference]: Start difference. First operand 72 states and 184 transitions. Second operand 18 states. [2020-10-06 00:01:50,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:50,016 INFO L93 Difference]: Finished difference Result 106 states and 259 transitions. [2020-10-06 00:01:50,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-06 00:01:50,017 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21 [2020-10-06 00:01:50,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:50,018 INFO L225 Difference]: With dead ends: 106 [2020-10-06 00:01:50,018 INFO L226 Difference]: Without dead ends: 94 [2020-10-06 00:01:50,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=690, Invalid=1472, Unknown=0, NotChecked=0, Total=2162 [2020-10-06 00:01:50,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-06 00:01:50,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 58. [2020-10-06 00:01:50,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-06 00:01:50,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 141 transitions. [2020-10-06 00:01:50,021 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 141 transitions. Word has length 21 [2020-10-06 00:01:50,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:50,021 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 141 transitions. [2020-10-06 00:01:50,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-06 00:01:50,021 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 141 transitions. [2020-10-06 00:01:50,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-06 00:01:50,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:50,022 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:50,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:50,225 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:50,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:50,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1728807741, now seen corresponding path program 49 times [2020-10-06 00:01:50,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:50,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668324899] [2020-10-06 00:01:50,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:50,421 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:50,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668324899] [2020-10-06 00:01:50,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618533410] [2020-10-06 00:01:50,421 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:50,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-06 00:01:50,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:50,481 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:50,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:50,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2020-10-06 00:01:50,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1723436897] [2020-10-06 00:01:50,482 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:50,484 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:50,488 INFO L258 McrAutomatonBuilder]: Finished intersection with 31 states and 38 transitions. [2020-10-06 00:01:50,489 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:50,489 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:50,490 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:50,531 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [14379#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-06 00:01:50,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-06 00:01:50,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:50,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-06 00:01:50,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-10-06 00:01:50,533 INFO L87 Difference]: Start difference. First operand 58 states and 141 transitions. Second operand 19 states. [2020-10-06 00:01:50,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:50,942 INFO L93 Difference]: Finished difference Result 102 states and 234 transitions. [2020-10-06 00:01:50,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-06 00:01:50,943 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22 [2020-10-06 00:01:50,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:50,944 INFO L225 Difference]: With dead ends: 102 [2020-10-06 00:01:50,944 INFO L226 Difference]: Without dead ends: 96 [2020-10-06 00:01:50,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=347, Invalid=913, Unknown=0, NotChecked=0, Total=1260 [2020-10-06 00:01:50,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-06 00:01:50,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 65. [2020-10-06 00:01:50,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-06 00:01:50,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 160 transitions. [2020-10-06 00:01:50,948 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 160 transitions. Word has length 22 [2020-10-06 00:01:50,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:50,948 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 160 transitions. [2020-10-06 00:01:50,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-06 00:01:50,949 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 160 transitions. [2020-10-06 00:01:50,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-06 00:01:50,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:50,949 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:51,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:51,160 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:51,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:51,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1588321, now seen corresponding path program 50 times [2020-10-06 00:01:51,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:51,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165279639] [2020-10-06 00:01:51,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:51,330 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:51,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165279639] [2020-10-06 00:01:51,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011788606] [2020-10-06 00:01:51,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:51,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:01:51,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:51,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-06 00:01:51,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:51,428 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:51,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:51,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2020-10-06 00:01:51,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1831366046] [2020-10-06 00:01:51,430 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:51,433 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:51,440 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 36 transitions. [2020-10-06 00:01:51,441 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:51,446 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:51,446 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:51,483 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [14727#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-06 00:01:51,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-06 00:01:51,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:51,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-06 00:01:51,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-10-06 00:01:51,484 INFO L87 Difference]: Start difference. First operand 65 states and 160 transitions. Second operand 19 states. [2020-10-06 00:01:52,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:52,003 INFO L93 Difference]: Finished difference Result 99 states and 230 transitions. [2020-10-06 00:01:52,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-06 00:01:52,004 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22 [2020-10-06 00:01:52,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:52,005 INFO L225 Difference]: With dead ends: 99 [2020-10-06 00:01:52,005 INFO L226 Difference]: Without dead ends: 93 [2020-10-06 00:01:52,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=367, Invalid=1039, Unknown=0, NotChecked=0, Total=1406 [2020-10-06 00:01:52,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-06 00:01:52,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 67. [2020-10-06 00:01:52,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-06 00:01:52,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 166 transitions. [2020-10-06 00:01:52,010 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 166 transitions. Word has length 22 [2020-10-06 00:01:52,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:52,010 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 166 transitions. [2020-10-06 00:01:52,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-06 00:01:52,010 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 166 transitions. [2020-10-06 00:01:52,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-06 00:01:52,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:52,011 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:52,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:52,221 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:52,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:52,221 INFO L82 PathProgramCache]: Analyzing trace with hash -633555839, now seen corresponding path program 51 times [2020-10-06 00:01:52,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:52,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460962258] [2020-10-06 00:01:52,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:52,415 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:52,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460962258] [2020-10-06 00:01:52,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608336955] [2020-10-06 00:01:52,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:52,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-10-06 00:01:52,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:52,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-06 00:01:52,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:52,485 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:52,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:52,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2020-10-06 00:01:52,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [282457501] [2020-10-06 00:01:52,488 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:52,490 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:52,495 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 36 transitions. [2020-10-06 00:01:52,495 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:52,504 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:52,505 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:52,525 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [15080#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-06 00:01:52,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-06 00:01:52,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:52,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-06 00:01:52,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-10-06 00:01:52,526 INFO L87 Difference]: Start difference. First operand 67 states and 166 transitions. Second operand 19 states. [2020-10-06 00:01:53,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:53,078 INFO L93 Difference]: Finished difference Result 97 states and 228 transitions. [2020-10-06 00:01:53,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-06 00:01:53,078 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22 [2020-10-06 00:01:53,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:53,080 INFO L225 Difference]: With dead ends: 97 [2020-10-06 00:01:53,080 INFO L226 Difference]: Without dead ends: 91 [2020-10-06 00:01:53,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=403, Invalid=1157, Unknown=0, NotChecked=0, Total=1560 [2020-10-06 00:01:53,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-06 00:01:53,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 69. [2020-10-06 00:01:53,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-06 00:01:53,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 172 transitions. [2020-10-06 00:01:53,083 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 172 transitions. Word has length 22 [2020-10-06 00:01:53,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:53,084 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 172 transitions. [2020-10-06 00:01:53,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-06 00:01:53,084 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 172 transitions. [2020-10-06 00:01:53,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-06 00:01:53,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:53,084 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:53,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:53,285 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:53,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:53,286 INFO L82 PathProgramCache]: Analyzing trace with hash -2055440925, now seen corresponding path program 52 times [2020-10-06 00:01:53,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:53,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415945374] [2020-10-06 00:01:53,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:53,443 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:53,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415945374] [2020-10-06 00:01:53,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979600920] [2020-10-06 00:01:53,444 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:53,490 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 00:01:53,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:53,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-06 00:01:53,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:53,525 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:53,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:53,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2020-10-06 00:01:53,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1037776964] [2020-10-06 00:01:53,526 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:53,528 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:53,533 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 36 transitions. [2020-10-06 00:01:53,533 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:53,543 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:53,543 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:53,562 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [15439#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-06 00:01:53,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-06 00:01:53,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:53,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-06 00:01:53,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2020-10-06 00:01:53,563 INFO L87 Difference]: Start difference. First operand 69 states and 172 transitions. Second operand 19 states. [2020-10-06 00:01:54,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:54,195 INFO L93 Difference]: Finished difference Result 95 states and 226 transitions. [2020-10-06 00:01:54,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-06 00:01:54,195 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22 [2020-10-06 00:01:54,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:54,196 INFO L225 Difference]: With dead ends: 95 [2020-10-06 00:01:54,196 INFO L226 Difference]: Without dead ends: 89 [2020-10-06 00:01:54,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=455, Invalid=1267, Unknown=0, NotChecked=0, Total=1722 [2020-10-06 00:01:54,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-06 00:01:54,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 71. [2020-10-06 00:01:54,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-06 00:01:54,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 178 transitions. [2020-10-06 00:01:54,199 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 178 transitions. Word has length 22 [2020-10-06 00:01:54,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:54,200 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 178 transitions. [2020-10-06 00:01:54,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-06 00:01:54,200 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 178 transitions. [2020-10-06 00:01:54,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-06 00:01:54,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:54,200 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:54,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-10-06 00:01:54,401 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:54,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:54,402 INFO L82 PathProgramCache]: Analyzing trace with hash 119613381, now seen corresponding path program 53 times [2020-10-06 00:01:54,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:54,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718009445] [2020-10-06 00:01:54,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:54,559 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:54,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718009445] [2020-10-06 00:01:54,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534055241] [2020-10-06 00:01:54,560 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:54,606 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-10-06 00:01:54,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:54,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-06 00:01:54,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:54,640 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:54,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:54,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2020-10-06 00:01:54,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [675530418] [2020-10-06 00:01:54,641 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:54,643 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:54,647 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 36 transitions. [2020-10-06 00:01:54,648 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:54,655 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:54,655 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:54,685 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [15804#(and (<= ~j~0 16) (< ~i~0 46))] [2020-10-06 00:01:54,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-06 00:01:54,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:54,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-06 00:01:54,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-10-06 00:01:54,686 INFO L87 Difference]: Start difference. First operand 71 states and 178 transitions. Second operand 19 states. [2020-10-06 00:01:55,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:55,378 INFO L93 Difference]: Finished difference Result 93 states and 224 transitions. [2020-10-06 00:01:55,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 00:01:55,379 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22 [2020-10-06 00:01:55,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:55,380 INFO L225 Difference]: With dead ends: 93 [2020-10-06 00:01:55,380 INFO L226 Difference]: Without dead ends: 87 [2020-10-06 00:01:55,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=523, Invalid=1369, Unknown=0, NotChecked=0, Total=1892 [2020-10-06 00:01:55,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-06 00:01:55,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 73. [2020-10-06 00:01:55,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-06 00:01:55,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 184 transitions. [2020-10-06 00:01:55,384 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 184 transitions. Word has length 22 [2020-10-06 00:01:55,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:55,385 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 184 transitions. [2020-10-06 00:01:55,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-06 00:01:55,385 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 184 transitions. [2020-10-06 00:01:55,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-06 00:01:55,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:55,385 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:55,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:55,586 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:55,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:55,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1129518553, now seen corresponding path program 54 times [2020-10-06 00:01:55,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:55,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970341605] [2020-10-06 00:01:55,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:55,719 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:55,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970341605] [2020-10-06 00:01:55,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298325289] [2020-10-06 00:01:55,720 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:55,781 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-10-06 00:01:55,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:55,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-06 00:01:55,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:55,800 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:55,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:55,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2020-10-06 00:01:55,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [539414777] [2020-10-06 00:01:55,801 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:55,803 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:55,807 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 36 transitions. [2020-10-06 00:01:55,807 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:55,810 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:55,810 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:55,846 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [16175#(and (<= ~j~0 18) (< ~i~0 46))] [2020-10-06 00:01:55,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-06 00:01:55,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:55,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-06 00:01:55,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-10-06 00:01:55,848 INFO L87 Difference]: Start difference. First operand 73 states and 184 transitions. Second operand 19 states. [2020-10-06 00:01:56,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:56,636 INFO L93 Difference]: Finished difference Result 93 states and 227 transitions. [2020-10-06 00:01:56,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-06 00:01:56,637 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22 [2020-10-06 00:01:56,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:56,638 INFO L225 Difference]: With dead ends: 93 [2020-10-06 00:01:56,638 INFO L226 Difference]: Without dead ends: 87 [2020-10-06 00:01:56,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=607, Invalid=1463, Unknown=0, NotChecked=0, Total=2070 [2020-10-06 00:01:56,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-06 00:01:56,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 75. [2020-10-06 00:01:56,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-06 00:01:56,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 192 transitions. [2020-10-06 00:01:56,641 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 192 transitions. Word has length 22 [2020-10-06 00:01:56,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:56,642 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 192 transitions. [2020-10-06 00:01:56,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-06 00:01:56,642 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 192 transitions. [2020-10-06 00:01:56,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-06 00:01:56,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:56,643 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:56,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-06 00:01:56,851 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:56,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:56,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1112941303, now seen corresponding path program 55 times [2020-10-06 00:01:56,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:56,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601145166] [2020-10-06 00:01:56,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:57,005 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:57,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601145166] [2020-10-06 00:01:57,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254474978] [2020-10-06 00:01:57,006 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:57,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-06 00:01:57,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:57,084 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:57,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:57,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2020-10-06 00:01:57,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [672851026] [2020-10-06 00:01:57,085 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:57,087 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:57,091 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 36 transitions. [2020-10-06 00:01:57,091 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:57,106 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:57,106 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:57,128 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [16554#(and (<= ~j~0 20) (< ~i~0 46))] [2020-10-06 00:01:57,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-06 00:01:57,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:57,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-06 00:01:57,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-10-06 00:01:57,129 INFO L87 Difference]: Start difference. First operand 75 states and 192 transitions. Second operand 19 states. [2020-10-06 00:01:57,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:57,982 INFO L93 Difference]: Finished difference Result 93 states and 235 transitions. [2020-10-06 00:01:57,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-06 00:01:57,983 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22 [2020-10-06 00:01:57,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:57,985 INFO L225 Difference]: With dead ends: 93 [2020-10-06 00:01:57,985 INFO L226 Difference]: Without dead ends: 81 [2020-10-06 00:01:57,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=705, Invalid=1551, Unknown=0, NotChecked=0, Total=2256 [2020-10-06 00:01:57,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-06 00:01:57,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 58. [2020-10-06 00:01:57,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-06 00:01:57,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 142 transitions. [2020-10-06 00:01:57,988 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 142 transitions. Word has length 22 [2020-10-06 00:01:57,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:57,988 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 142 transitions. [2020-10-06 00:01:57,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-06 00:01:57,988 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 142 transitions. [2020-10-06 00:01:57,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-06 00:01:57,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:57,989 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:58,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-06 00:01:58,193 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:58,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:58,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1335609647, now seen corresponding path program 56 times [2020-10-06 00:01:58,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:58,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331122803] [2020-10-06 00:01:58,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:58,402 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:58,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331122803] [2020-10-06 00:01:58,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962855587] [2020-10-06 00:01:58,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:58,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:01:58,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:58,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-06 00:01:58,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:58,462 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:58,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:58,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2020-10-06 00:01:58,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1270595428] [2020-10-06 00:01:58,463 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:58,465 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:58,471 INFO L258 McrAutomatonBuilder]: Finished intersection with 33 states and 43 transitions. [2020-10-06 00:01:58,471 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:58,477 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:58,477 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:58,499 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:58,500 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:58,526 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:58,526 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:58,541 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:58,542 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:58,550 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [16907#(and (<= ~j~0 4) (< ~i~0 46))] [2020-10-06 00:01:58,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-06 00:01:58,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:58,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-06 00:01:58,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-06 00:01:58,551 INFO L87 Difference]: Start difference. First operand 58 states and 142 transitions. Second operand 20 states. [2020-10-06 00:01:58,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:58,982 INFO L93 Difference]: Finished difference Result 90 states and 210 transitions. [2020-10-06 00:01:58,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-06 00:01:58,982 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2020-10-06 00:01:58,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:58,983 INFO L225 Difference]: With dead ends: 90 [2020-10-06 00:01:58,983 INFO L226 Difference]: Without dead ends: 84 [2020-10-06 00:01:58,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=385, Invalid=947, Unknown=0, NotChecked=0, Total=1332 [2020-10-06 00:01:58,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-06 00:01:58,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 66. [2020-10-06 00:01:58,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-06 00:01:58,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 162 transitions. [2020-10-06 00:01:58,986 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 162 transitions. Word has length 23 [2020-10-06 00:01:58,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:58,986 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 162 transitions. [2020-10-06 00:01:58,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-06 00:01:58,987 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 162 transitions. [2020-10-06 00:01:58,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-06 00:01:58,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:58,987 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:59,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:59,188 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:59,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:59,188 INFO L82 PathProgramCache]: Analyzing trace with hash -2093881677, now seen corresponding path program 57 times [2020-10-06 00:01:59,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:59,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548727148] [2020-10-06 00:01:59,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:59,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:59,388 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:59,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548727148] [2020-10-06 00:01:59,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065697395] [2020-10-06 00:01:59,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:01:59,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-10-06 00:01:59,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:59,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-06 00:01:59,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:59,497 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:59,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:59,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2020-10-06 00:01:59,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [990195323] [2020-10-06 00:01:59,498 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:59,501 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:59,506 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 33 transitions. [2020-10-06 00:01:59,506 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:59,515 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:59,515 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:59,536 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [17249#(and (<= ~j~0 6) (< ~i~0 46))] [2020-10-06 00:01:59,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-06 00:01:59,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:59,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-06 00:01:59,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2020-10-06 00:01:59,537 INFO L87 Difference]: Start difference. First operand 66 states and 162 transitions. Second operand 20 states. [2020-10-06 00:02:00,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:00,087 INFO L93 Difference]: Finished difference Result 122 states and 276 transitions. [2020-10-06 00:02:00,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-06 00:02:00,087 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2020-10-06 00:02:00,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:00,088 INFO L225 Difference]: With dead ends: 122 [2020-10-06 00:02:00,089 INFO L226 Difference]: Without dead ends: 116 [2020-10-06 00:02:00,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2020-10-06 00:02:00,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-06 00:02:00,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 68. [2020-10-06 00:02:00,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-06 00:02:00,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 168 transitions. [2020-10-06 00:02:00,091 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 168 transitions. Word has length 23 [2020-10-06 00:02:00,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:00,091 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 168 transitions. [2020-10-06 00:02:00,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-06 00:02:00,092 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 168 transitions. [2020-10-06 00:02:00,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-06 00:02:00,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:00,092 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:00,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2020-10-06 00:02:00,296 INFO L427 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:00,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:00,296 INFO L82 PathProgramCache]: Analyzing trace with hash 470689557, now seen corresponding path program 58 times [2020-10-06 00:02:00,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:00,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875472487] [2020-10-06 00:02:00,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:00,504 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:00,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875472487] [2020-10-06 00:02:00,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426978769] [2020-10-06 00:02:00,505 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:00,553 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 00:02:00,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:00,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-06 00:02:00,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:00,568 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:00,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:00,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2020-10-06 00:02:00,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1841538977] [2020-10-06 00:02:00,569 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:00,571 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:00,576 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 33 transitions. [2020-10-06 00:02:00,576 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:00,583 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:00,583 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:00,605 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [17635#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-06 00:02:00,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-06 00:02:00,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:00,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-06 00:02:00,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2020-10-06 00:02:00,606 INFO L87 Difference]: Start difference. First operand 68 states and 168 transitions. Second operand 20 states. [2020-10-06 00:02:01,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:01,213 INFO L93 Difference]: Finished difference Result 119 states and 272 transitions. [2020-10-06 00:02:01,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-06 00:02:01,213 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2020-10-06 00:02:01,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:01,214 INFO L225 Difference]: With dead ends: 119 [2020-10-06 00:02:01,215 INFO L226 Difference]: Without dead ends: 113 [2020-10-06 00:02:01,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=473, Invalid=1333, Unknown=0, NotChecked=0, Total=1806 [2020-10-06 00:02:01,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-06 00:02:01,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 70. [2020-10-06 00:02:01,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-06 00:02:01,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 174 transitions. [2020-10-06 00:02:01,218 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 174 transitions. Word has length 23 [2020-10-06 00:02:01,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:01,218 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 174 transitions. [2020-10-06 00:02:01,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-06 00:02:01,218 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 174 transitions. [2020-10-06 00:02:01,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-06 00:02:01,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:01,219 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:01,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:02:01,419 INFO L427 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:01,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:01,420 INFO L82 PathProgramCache]: Analyzing trace with hash -161277961, now seen corresponding path program 59 times [2020-10-06 00:02:01,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:01,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574014389] [2020-10-06 00:02:01,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:01,591 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:01,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574014389] [2020-10-06 00:02:01,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426505819] [2020-10-06 00:02:01,592 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:01,647 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-10-06 00:02:01,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:01,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-06 00:02:01,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:01,679 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:01,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:01,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2020-10-06 00:02:01,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1173631612] [2020-10-06 00:02:01,680 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:01,682 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:01,687 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 33 transitions. [2020-10-06 00:02:01,688 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:01,702 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:01,702 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:01,739 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [18026#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-06 00:02:01,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-06 00:02:01,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:01,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-06 00:02:01,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2020-10-06 00:02:01,741 INFO L87 Difference]: Start difference. First operand 70 states and 174 transitions. Second operand 20 states. [2020-10-06 00:02:02,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:02,662 INFO L93 Difference]: Finished difference Result 117 states and 270 transitions. [2020-10-06 00:02:02,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 00:02:02,663 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2020-10-06 00:02:02,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:02,664 INFO L225 Difference]: With dead ends: 117 [2020-10-06 00:02:02,664 INFO L226 Difference]: Without dead ends: 111 [2020-10-06 00:02:02,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=522, Invalid=1458, Unknown=0, NotChecked=0, Total=1980 [2020-10-06 00:02:02,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-06 00:02:02,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 72. [2020-10-06 00:02:02,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-06 00:02:02,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 180 transitions. [2020-10-06 00:02:02,669 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 180 transitions. Word has length 23 [2020-10-06 00:02:02,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:02,669 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 180 transitions. [2020-10-06 00:02:02,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-06 00:02:02,669 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 180 transitions. [2020-10-06 00:02:02,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-06 00:02:02,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:02,670 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:02,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2020-10-06 00:02:02,882 INFO L427 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:02,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:02,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1583163047, now seen corresponding path program 60 times [2020-10-06 00:02:02,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:02,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538365055] [2020-10-06 00:02:02,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:03,145 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:03,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538365055] [2020-10-06 00:02:03,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91806203] [2020-10-06 00:02:03,146 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:03,248 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-10-06 00:02:03,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:03,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-06 00:02:03,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:03,279 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:03,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:03,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2020-10-06 00:02:03,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [498727504] [2020-10-06 00:02:03,280 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:03,284 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:03,292 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 33 transitions. [2020-10-06 00:02:03,292 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:03,293 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:03,294 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:03,334 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [18423#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-06 00:02:03,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-06 00:02:03,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:03,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-06 00:02:03,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2020-10-06 00:02:03,335 INFO L87 Difference]: Start difference. First operand 72 states and 180 transitions. Second operand 20 states. [2020-10-06 00:02:04,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:04,069 INFO L93 Difference]: Finished difference Result 115 states and 268 transitions. [2020-10-06 00:02:04,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-06 00:02:04,070 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2020-10-06 00:02:04,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:04,071 INFO L225 Difference]: With dead ends: 115 [2020-10-06 00:02:04,071 INFO L226 Difference]: Without dead ends: 109 [2020-10-06 00:02:04,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=587, Invalid=1575, Unknown=0, NotChecked=0, Total=2162 [2020-10-06 00:02:04,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-06 00:02:04,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 74. [2020-10-06 00:02:04,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-06 00:02:04,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 186 transitions. [2020-10-06 00:02:04,074 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 186 transitions. Word has length 23 [2020-10-06 00:02:04,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:04,075 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 186 transitions. [2020-10-06 00:02:04,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-06 00:02:04,075 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 186 transitions. [2020-10-06 00:02:04,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-06 00:02:04,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:04,076 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:04,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:02:04,285 INFO L427 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:04,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:04,286 INFO L82 PathProgramCache]: Analyzing trace with hash 591891259, now seen corresponding path program 61 times [2020-10-06 00:02:04,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:04,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171074328] [2020-10-06 00:02:04,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:04,453 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:04,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171074328] [2020-10-06 00:02:04,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905786512] [2020-10-06 00:02:04,453 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:04,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-06 00:02:04,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:04,546 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:04,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:04,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2020-10-06 00:02:04,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1888877753] [2020-10-06 00:02:04,547 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:04,550 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:04,555 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 33 transitions. [2020-10-06 00:02:04,556 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:04,565 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:04,565 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:04,587 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [18826#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-06 00:02:04,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-06 00:02:04,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:04,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-06 00:02:04,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2020-10-06 00:02:04,589 INFO L87 Difference]: Start difference. First operand 74 states and 186 transitions. Second operand 20 states. [2020-10-06 00:02:05,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:05,384 INFO L93 Difference]: Finished difference Result 113 states and 266 transitions. [2020-10-06 00:02:05,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-06 00:02:05,384 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2020-10-06 00:02:05,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:05,385 INFO L225 Difference]: With dead ends: 113 [2020-10-06 00:02:05,386 INFO L226 Difference]: Without dead ends: 107 [2020-10-06 00:02:05,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=668, Invalid=1684, Unknown=0, NotChecked=0, Total=2352 [2020-10-06 00:02:05,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-06 00:02:05,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 76. [2020-10-06 00:02:05,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-06 00:02:05,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 192 transitions. [2020-10-06 00:02:05,389 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 192 transitions. Word has length 23 [2020-10-06 00:02:05,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:05,389 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 192 transitions. [2020-10-06 00:02:05,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-06 00:02:05,389 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 192 transitions. [2020-10-06 00:02:05,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-06 00:02:05,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:05,390 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:05,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2020-10-06 00:02:05,591 INFO L427 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:05,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:05,591 INFO L82 PathProgramCache]: Analyzing trace with hash -657240675, now seen corresponding path program 62 times [2020-10-06 00:02:05,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:05,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838625652] [2020-10-06 00:02:05,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:05,737 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:05,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838625652] [2020-10-06 00:02:05,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675050040] [2020-10-06 00:02:05,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:05,787 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:02:05,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:05,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-06 00:02:05,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:05,813 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:05,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:05,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2020-10-06 00:02:05,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1786077579] [2020-10-06 00:02:05,814 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:05,816 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:05,821 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 33 transitions. [2020-10-06 00:02:05,822 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:05,831 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:05,831 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:05,858 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [19235#(and (<= ~j~0 16) (< ~i~0 46))] [2020-10-06 00:02:05,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-06 00:02:05,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:05,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-06 00:02:05,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-10-06 00:02:05,860 INFO L87 Difference]: Start difference. First operand 76 states and 192 transitions. Second operand 20 states. [2020-10-06 00:02:06,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:06,749 INFO L93 Difference]: Finished difference Result 113 states and 269 transitions. [2020-10-06 00:02:06,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-06 00:02:06,749 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2020-10-06 00:02:06,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:06,751 INFO L225 Difference]: With dead ends: 113 [2020-10-06 00:02:06,751 INFO L226 Difference]: Without dead ends: 107 [2020-10-06 00:02:06,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=765, Invalid=1785, Unknown=0, NotChecked=0, Total=2550 [2020-10-06 00:02:06,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-06 00:02:06,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 78. [2020-10-06 00:02:06,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-06 00:02:06,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 200 transitions. [2020-10-06 00:02:06,754 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 200 transitions. Word has length 23 [2020-10-06 00:02:06,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:06,754 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 200 transitions. [2020-10-06 00:02:06,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-06 00:02:06,754 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 200 transitions. [2020-10-06 00:02:06,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-06 00:02:06,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:06,755 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:06,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:02:06,956 INFO L427 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:06,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:06,957 INFO L82 PathProgramCache]: Analyzing trace with hash -640663425, now seen corresponding path program 63 times [2020-10-06 00:02:06,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:06,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717957125] [2020-10-06 00:02:06,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:07,128 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:07,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717957125] [2020-10-06 00:02:07,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560649787] [2020-10-06 00:02:07,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:07,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-10-06 00:02:07,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:07,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-06 00:02:07,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:07,206 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:07,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:07,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2020-10-06 00:02:07,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1847533355] [2020-10-06 00:02:07,207 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:07,209 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:07,214 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 33 transitions. [2020-10-06 00:02:07,214 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:07,224 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:07,225 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:07,244 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [19652#(and (<= ~j~0 18) (< ~i~0 46))] [2020-10-06 00:02:07,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-06 00:02:07,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:07,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-06 00:02:07,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-10-06 00:02:07,245 INFO L87 Difference]: Start difference. First operand 78 states and 200 transitions. Second operand 20 states. [2020-10-06 00:02:08,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:08,168 INFO L93 Difference]: Finished difference Result 114 states and 279 transitions. [2020-10-06 00:02:08,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-06 00:02:08,169 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2020-10-06 00:02:08,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:08,170 INFO L225 Difference]: With dead ends: 114 [2020-10-06 00:02:08,170 INFO L226 Difference]: Without dead ends: 102 [2020-10-06 00:02:08,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=876, Invalid=1880, Unknown=0, NotChecked=0, Total=2756 [2020-10-06 00:02:08,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-06 00:02:08,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 62. [2020-10-06 00:02:08,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-06 00:02:08,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 151 transitions. [2020-10-06 00:02:08,173 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 151 transitions. Word has length 23 [2020-10-06 00:02:08,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:08,173 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 151 transitions. [2020-10-06 00:02:08,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-06 00:02:08,174 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 151 transitions. [2020-10-06 00:02:08,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-06 00:02:08,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:08,174 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:08,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2020-10-06 00:02:08,375 INFO L427 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:08,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:08,375 INFO L82 PathProgramCache]: Analyzing trace with hash -768088516, now seen corresponding path program 64 times [2020-10-06 00:02:08,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:08,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741044015] [2020-10-06 00:02:08,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:08,629 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:08,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741044015] [2020-10-06 00:02:08,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166243103] [2020-10-06 00:02:08,630 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:08,676 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 00:02:08,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:08,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-06 00:02:08,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:08,690 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:08,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:08,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-10-06 00:02:08,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1076535616] [2020-10-06 00:02:08,691 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:08,693 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:08,699 INFO L258 McrAutomatonBuilder]: Finished intersection with 33 states and 40 transitions. [2020-10-06 00:02:08,699 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:08,716 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:08,717 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:08,743 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [20046#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-06 00:02:08,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-06 00:02:08,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:08,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-06 00:02:08,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2020-10-06 00:02:08,744 INFO L87 Difference]: Start difference. First operand 62 states and 151 transitions. Second operand 21 states. [2020-10-06 00:02:09,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:09,240 INFO L93 Difference]: Finished difference Result 110 states and 252 transitions. [2020-10-06 00:02:09,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-06 00:02:09,241 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 24 [2020-10-06 00:02:09,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:09,242 INFO L225 Difference]: With dead ends: 110 [2020-10-06 00:02:09,242 INFO L226 Difference]: Without dead ends: 104 [2020-10-06 00:02:09,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=432, Invalid=1128, Unknown=0, NotChecked=0, Total=1560 [2020-10-06 00:02:09,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-06 00:02:09,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 69. [2020-10-06 00:02:09,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-06 00:02:09,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 170 transitions. [2020-10-06 00:02:09,245 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 170 transitions. Word has length 24 [2020-10-06 00:02:09,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:09,246 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 170 transitions. [2020-10-06 00:02:09,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-06 00:02:09,246 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 170 transitions. [2020-10-06 00:02:09,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-06 00:02:09,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:09,246 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:09,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:02:09,448 INFO L427 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:09,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:09,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1526360546, now seen corresponding path program 65 times [2020-10-06 00:02:09,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:09,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832903128] [2020-10-06 00:02:09,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:09,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:09,672 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:09,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832903128] [2020-10-06 00:02:09,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962288238] [2020-10-06 00:02:09,673 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:09,723 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-10-06 00:02:09,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:09,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-06 00:02:09,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:09,739 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:09,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:09,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-10-06 00:02:09,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [58044442] [2020-10-06 00:02:09,740 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:09,742 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:09,748 INFO L258 McrAutomatonBuilder]: Finished intersection with 32 states and 38 transitions. [2020-10-06 00:02:09,748 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:09,749 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:09,750 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:09,784 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [20422#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-06 00:02:09,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-06 00:02:09,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:09,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-06 00:02:09,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-10-06 00:02:09,785 INFO L87 Difference]: Start difference. First operand 69 states and 170 transitions. Second operand 21 states. [2020-10-06 00:02:10,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:10,368 INFO L93 Difference]: Finished difference Result 107 states and 248 transitions. [2020-10-06 00:02:10,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-06 00:02:10,369 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 24 [2020-10-06 00:02:10,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:10,370 INFO L225 Difference]: With dead ends: 107 [2020-10-06 00:02:10,370 INFO L226 Difference]: Without dead ends: 101 [2020-10-06 00:02:10,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=450, Invalid=1272, Unknown=0, NotChecked=0, Total=1722 [2020-10-06 00:02:10,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-06 00:02:10,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 71. [2020-10-06 00:02:10,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-06 00:02:10,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 176 transitions. [2020-10-06 00:02:10,374 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 176 transitions. Word has length 24 [2020-10-06 00:02:10,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:10,374 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 176 transitions. [2020-10-06 00:02:10,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-06 00:02:10,375 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 176 transitions. [2020-10-06 00:02:10,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-06 00:02:10,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:10,375 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:10,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2020-10-06 00:02:10,581 INFO L427 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:10,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:10,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1038210688, now seen corresponding path program 66 times [2020-10-06 00:02:10,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:10,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308136244] [2020-10-06 00:02:10,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:10,804 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:10,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308136244] [2020-10-06 00:02:10,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306407732] [2020-10-06 00:02:10,805 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:10,854 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-10-06 00:02:10,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:10,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-06 00:02:10,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:10,872 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:10,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:10,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-10-06 00:02:10,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [344269316] [2020-10-06 00:02:10,873 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:10,876 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:10,881 INFO L258 McrAutomatonBuilder]: Finished intersection with 32 states and 38 transitions. [2020-10-06 00:02:10,882 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:10,894 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:10,894 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:10,931 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [20803#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-06 00:02:10,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-06 00:02:10,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:10,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-06 00:02:10,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2020-10-06 00:02:10,933 INFO L87 Difference]: Start difference. First operand 71 states and 176 transitions. Second operand 21 states. [2020-10-06 00:02:11,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:11,718 INFO L93 Difference]: Finished difference Result 105 states and 246 transitions. [2020-10-06 00:02:11,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-06 00:02:11,719 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 24 [2020-10-06 00:02:11,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:11,720 INFO L225 Difference]: With dead ends: 105 [2020-10-06 00:02:11,720 INFO L226 Difference]: Without dead ends: 99 [2020-10-06 00:02:11,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=484, Invalid=1408, Unknown=0, NotChecked=0, Total=1892 [2020-10-06 00:02:11,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-06 00:02:11,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 73. [2020-10-06 00:02:11,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-06 00:02:11,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 182 transitions. [2020-10-06 00:02:11,723 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 182 transitions. Word has length 24 [2020-10-06 00:02:11,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:11,723 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 182 transitions. [2020-10-06 00:02:11,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-06 00:02:11,723 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 182 transitions. [2020-10-06 00:02:11,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-06 00:02:11,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:11,724 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:11,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2020-10-06 00:02:11,924 INFO L427 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:11,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:11,925 INFO L82 PathProgramCache]: Analyzing trace with hash 406243170, now seen corresponding path program 67 times [2020-10-06 00:02:11,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:11,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223403862] [2020-10-06 00:02:11,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:12,167 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:12,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223403862] [2020-10-06 00:02:12,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094213510] [2020-10-06 00:02:12,168 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:12,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-06 00:02:12,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:12,274 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:12,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:12,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-10-06 00:02:12,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1107970149] [2020-10-06 00:02:12,276 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:12,282 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:12,290 INFO L258 McrAutomatonBuilder]: Finished intersection with 32 states and 38 transitions. [2020-10-06 00:02:12,290 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:12,305 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:12,306 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:12,333 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [21190#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-06 00:02:12,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-06 00:02:12,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:12,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-06 00:02:12,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2020-10-06 00:02:12,334 INFO L87 Difference]: Start difference. First operand 73 states and 182 transitions. Second operand 21 states. [2020-10-06 00:02:13,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:13,340 INFO L93 Difference]: Finished difference Result 103 states and 244 transitions. [2020-10-06 00:02:13,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 00:02:13,341 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 24 [2020-10-06 00:02:13,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:13,343 INFO L225 Difference]: With dead ends: 103 [2020-10-06 00:02:13,343 INFO L226 Difference]: Without dead ends: 97 [2020-10-06 00:02:13,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=534, Invalid=1536, Unknown=0, NotChecked=0, Total=2070 [2020-10-06 00:02:13,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-06 00:02:13,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 75. [2020-10-06 00:02:13,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-06 00:02:13,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 188 transitions. [2020-10-06 00:02:13,347 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 188 transitions. Word has length 24 [2020-10-06 00:02:13,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:13,348 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 188 transitions. [2020-10-06 00:02:13,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-06 00:02:13,348 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 188 transitions. [2020-10-06 00:02:13,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-06 00:02:13,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:13,349 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:13,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2020-10-06 00:02:13,559 INFO L427 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:13,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:13,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1015641916, now seen corresponding path program 68 times [2020-10-06 00:02:13,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:13,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385274079] [2020-10-06 00:02:13,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:13,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:13,754 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:13,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385274079] [2020-10-06 00:02:13,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422082005] [2020-10-06 00:02:13,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:13,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:02:13,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:13,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-06 00:02:13,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:13,830 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:13,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:13,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-10-06 00:02:13,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2011886018] [2020-10-06 00:02:13,831 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:13,834 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:13,842 INFO L258 McrAutomatonBuilder]: Finished intersection with 32 states and 38 transitions. [2020-10-06 00:02:13,842 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:13,853 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:13,853 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:13,877 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [21583#(and (<= ~j~0 16) (< ~i~0 46))] [2020-10-06 00:02:13,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-06 00:02:13,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:13,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-06 00:02:13,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2020-10-06 00:02:13,878 INFO L87 Difference]: Start difference. First operand 75 states and 188 transitions. Second operand 21 states. [2020-10-06 00:02:14,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:14,698 INFO L93 Difference]: Finished difference Result 101 states and 242 transitions. [2020-10-06 00:02:14,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-06 00:02:14,699 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 24 [2020-10-06 00:02:14,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:14,700 INFO L225 Difference]: With dead ends: 101 [2020-10-06 00:02:14,700 INFO L226 Difference]: Without dead ends: 95 [2020-10-06 00:02:14,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=600, Invalid=1656, Unknown=0, NotChecked=0, Total=2256 [2020-10-06 00:02:14,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-06 00:02:14,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 77. [2020-10-06 00:02:14,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-06 00:02:14,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 194 transitions. [2020-10-06 00:02:14,704 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 194 transitions. Word has length 24 [2020-10-06 00:02:14,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:14,704 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 194 transitions. [2020-10-06 00:02:14,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-06 00:02:14,704 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 194 transitions. [2020-10-06 00:02:14,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-06 00:02:14,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:14,705 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:14,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:02:14,905 INFO L427 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:14,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:14,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1159412390, now seen corresponding path program 69 times [2020-10-06 00:02:14,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:14,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53302370] [2020-10-06 00:02:14,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:15,097 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:15,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53302370] [2020-10-06 00:02:15,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62090751] [2020-10-06 00:02:15,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:15,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-10-06 00:02:15,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:15,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-06 00:02:15,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:15,170 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:15,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:15,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-10-06 00:02:15,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1944772123] [2020-10-06 00:02:15,171 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:15,172 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:15,177 INFO L258 McrAutomatonBuilder]: Finished intersection with 32 states and 38 transitions. [2020-10-06 00:02:15,177 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:15,181 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:15,182 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:15,219 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [21982#(and (<= ~j~0 18) (< ~i~0 46))] [2020-10-06 00:02:15,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-06 00:02:15,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:15,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-06 00:02:15,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2020-10-06 00:02:15,220 INFO L87 Difference]: Start difference. First operand 77 states and 194 transitions. Second operand 21 states. [2020-10-06 00:02:16,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:16,122 INFO L93 Difference]: Finished difference Result 99 states and 240 transitions. [2020-10-06 00:02:16,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-06 00:02:16,122 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 24 [2020-10-06 00:02:16,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:16,123 INFO L225 Difference]: With dead ends: 99 [2020-10-06 00:02:16,124 INFO L226 Difference]: Without dead ends: 93 [2020-10-06 00:02:16,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=682, Invalid=1768, Unknown=0, NotChecked=0, Total=2450 [2020-10-06 00:02:16,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-06 00:02:16,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 79. [2020-10-06 00:02:16,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-06 00:02:16,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 200 transitions. [2020-10-06 00:02:16,127 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 200 transitions. Word has length 24 [2020-10-06 00:02:16,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:16,127 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 200 transitions. [2020-10-06 00:02:16,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-06 00:02:16,127 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 200 transitions. [2020-10-06 00:02:16,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-06 00:02:16,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:16,128 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:16,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:02:16,328 INFO L427 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:16,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:16,329 INFO L82 PathProgramCache]: Analyzing trace with hash -89719544, now seen corresponding path program 70 times [2020-10-06 00:02:16,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:16,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339694690] [2020-10-06 00:02:16,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:16,529 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:16,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339694690] [2020-10-06 00:02:16,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067581892] [2020-10-06 00:02:16,530 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:16,600 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 00:02:16,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:16,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-06 00:02:16,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:16,629 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:16,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:16,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-10-06 00:02:16,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [18428919] [2020-10-06 00:02:16,630 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:16,634 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:16,641 INFO L258 McrAutomatonBuilder]: Finished intersection with 32 states and 38 transitions. [2020-10-06 00:02:16,641 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:16,644 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:16,645 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:16,683 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [22387#(and (<= ~j~0 20) (< ~i~0 46))] [2020-10-06 00:02:16,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-06 00:02:16,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:16,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-06 00:02:16,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-10-06 00:02:16,684 INFO L87 Difference]: Start difference. First operand 79 states and 200 transitions. Second operand 21 states. [2020-10-06 00:02:17,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:17,655 INFO L93 Difference]: Finished difference Result 99 states and 243 transitions. [2020-10-06 00:02:17,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-06 00:02:17,655 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 24 [2020-10-06 00:02:17,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:17,656 INFO L225 Difference]: With dead ends: 99 [2020-10-06 00:02:17,657 INFO L226 Difference]: Without dead ends: 93 [2020-10-06 00:02:17,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=780, Invalid=1872, Unknown=0, NotChecked=0, Total=2652 [2020-10-06 00:02:17,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-06 00:02:17,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 81. [2020-10-06 00:02:17,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-06 00:02:17,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 208 transitions. [2020-10-06 00:02:17,661 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 208 transitions. Word has length 24 [2020-10-06 00:02:17,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:17,661 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 208 transitions. [2020-10-06 00:02:17,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-06 00:02:17,662 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 208 transitions. [2020-10-06 00:02:17,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-06 00:02:17,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:17,662 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:17,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:02:17,872 INFO L427 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:17,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:17,872 INFO L82 PathProgramCache]: Analyzing trace with hash -73142294, now seen corresponding path program 71 times [2020-10-06 00:02:17,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:17,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420801258] [2020-10-06 00:02:17,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:17,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:18,066 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:18,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420801258] [2020-10-06 00:02:18,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209008647] [2020-10-06 00:02:18,067 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:18,116 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-10-06 00:02:18,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:18,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-06 00:02:18,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:18,140 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:18,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:18,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-10-06 00:02:18,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1006874154] [2020-10-06 00:02:18,141 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:18,143 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:18,147 INFO L258 McrAutomatonBuilder]: Finished intersection with 32 states and 38 transitions. [2020-10-06 00:02:18,147 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:18,148 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:18,148 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:18,196 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [22800#(and (<= ~j~0 22) (< ~i~0 46))] [2020-10-06 00:02:18,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-06 00:02:18,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:18,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-06 00:02:18,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2020-10-06 00:02:18,197 INFO L87 Difference]: Start difference. First operand 81 states and 208 transitions. Second operand 21 states. [2020-10-06 00:02:19,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:19,234 INFO L93 Difference]: Finished difference Result 99 states and 251 transitions. [2020-10-06 00:02:19,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-06 00:02:19,235 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 24 [2020-10-06 00:02:19,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:19,236 INFO L225 Difference]: With dead ends: 99 [2020-10-06 00:02:19,236 INFO L226 Difference]: Without dead ends: 87 [2020-10-06 00:02:19,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=892, Invalid=1970, Unknown=0, NotChecked=0, Total=2862 [2020-10-06 00:02:19,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-06 00:02:19,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 62. [2020-10-06 00:02:19,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-06 00:02:19,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 152 transitions. [2020-10-06 00:02:19,239 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 152 transitions. Word has length 24 [2020-10-06 00:02:19,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:19,239 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 152 transitions. [2020-10-06 00:02:19,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-06 00:02:19,239 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 152 transitions. [2020-10-06 00:02:19,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 00:02:19,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:19,240 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:19,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2020-10-06 00:02:19,441 INFO L427 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:19,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:19,441 INFO L82 PathProgramCache]: Analyzing trace with hash 674366672, now seen corresponding path program 72 times [2020-10-06 00:02:19,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:19,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773249937] [2020-10-06 00:02:19,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:19,684 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:19,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773249937] [2020-10-06 00:02:19,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064837080] [2020-10-06 00:02:19,685 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:19,740 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-10-06 00:02:19,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:19,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-06 00:02:19,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:19,753 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:19,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:19,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-10-06 00:02:19,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [913132712] [2020-10-06 00:02:19,754 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:19,756 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:19,761 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 45 transitions. [2020-10-06 00:02:19,761 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:19,765 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:19,765 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:19,793 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:19,793 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:19,815 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:19,815 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:19,823 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:19,824 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:19,829 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [23183#(and (<= ~j~0 4) (< ~i~0 46))] [2020-10-06 00:02:19,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-06 00:02:19,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:19,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-06 00:02:19,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-10-06 00:02:19,830 INFO L87 Difference]: Start difference. First operand 62 states and 152 transitions. Second operand 22 states. [2020-10-06 00:02:20,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:20,354 INFO L93 Difference]: Finished difference Result 96 states and 224 transitions. [2020-10-06 00:02:20,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-06 00:02:20,355 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25 [2020-10-06 00:02:20,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:20,356 INFO L225 Difference]: With dead ends: 96 [2020-10-06 00:02:20,356 INFO L226 Difference]: Without dead ends: 90 [2020-10-06 00:02:20,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=476, Invalid=1164, Unknown=0, NotChecked=0, Total=1640 [2020-10-06 00:02:20,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-06 00:02:20,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 70. [2020-10-06 00:02:20,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-06 00:02:20,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 172 transitions. [2020-10-06 00:02:20,360 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 172 transitions. Word has length 25 [2020-10-06 00:02:20,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:20,360 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 172 transitions. [2020-10-06 00:02:20,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-06 00:02:20,360 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 172 transitions. [2020-10-06 00:02:20,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 00:02:20,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:20,361 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:20,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:02:20,572 INFO L427 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:20,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:20,572 INFO L82 PathProgramCache]: Analyzing trace with hash 2119386162, now seen corresponding path program 73 times [2020-10-06 00:02:20,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:20,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728462406] [2020-10-06 00:02:20,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:20,833 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:20,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728462406] [2020-10-06 00:02:20,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986376867] [2020-10-06 00:02:20,834 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:20,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-06 00:02:20,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:20,901 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:20,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:20,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-10-06 00:02:20,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [51729733] [2020-10-06 00:02:20,902 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:20,904 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:20,908 INFO L258 McrAutomatonBuilder]: Finished intersection with 31 states and 35 transitions. [2020-10-06 00:02:20,908 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:20,915 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:20,915 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:20,942 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [23551#(and (<= ~j~0 6) (< ~i~0 46))] [2020-10-06 00:02:20,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-06 00:02:20,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:20,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-06 00:02:20,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2020-10-06 00:02:20,943 INFO L87 Difference]: Start difference. First operand 70 states and 172 transitions. Second operand 22 states. [2020-10-06 00:02:21,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:21,579 INFO L93 Difference]: Finished difference Result 132 states and 298 transitions. [2020-10-06 00:02:21,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-06 00:02:21,580 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25 [2020-10-06 00:02:21,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:21,581 INFO L225 Difference]: With dead ends: 132 [2020-10-06 00:02:21,581 INFO L226 Difference]: Without dead ends: 126 [2020-10-06 00:02:21,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=533, Invalid=1447, Unknown=0, NotChecked=0, Total=1980 [2020-10-06 00:02:21,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-06 00:02:21,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 72. [2020-10-06 00:02:21,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-06 00:02:21,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 178 transitions. [2020-10-06 00:02:21,585 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 178 transitions. Word has length 25 [2020-10-06 00:02:21,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:21,585 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 178 transitions. [2020-10-06 00:02:21,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-06 00:02:21,586 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 178 transitions. [2020-10-06 00:02:21,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 00:02:21,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:21,586 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:21,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:02:21,789 INFO L427 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:21,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:21,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1361114132, now seen corresponding path program 74 times [2020-10-06 00:02:21,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:21,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093894821] [2020-10-06 00:02:21,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:22,028 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:22,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093894821] [2020-10-06 00:02:22,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375612487] [2020-10-06 00:02:22,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:22,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:02:22,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:22,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-06 00:02:22,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:22,093 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:22,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:22,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-10-06 00:02:22,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1435940679] [2020-10-06 00:02:22,094 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:22,096 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:22,101 INFO L258 McrAutomatonBuilder]: Finished intersection with 31 states and 35 transitions. [2020-10-06 00:02:22,101 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:22,108 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:22,108 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:22,134 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [23967#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-06 00:02:22,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-06 00:02:22,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:22,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-06 00:02:22,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2020-10-06 00:02:22,135 INFO L87 Difference]: Start difference. First operand 72 states and 178 transitions. Second operand 22 states. [2020-10-06 00:02:22,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:22,851 INFO L93 Difference]: Finished difference Result 129 states and 294 transitions. [2020-10-06 00:02:22,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 00:02:22,852 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25 [2020-10-06 00:02:22,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:22,853 INFO L225 Difference]: With dead ends: 129 [2020-10-06 00:02:22,853 INFO L226 Difference]: Without dead ends: 123 [2020-10-06 00:02:22,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=564, Invalid=1598, Unknown=0, NotChecked=0, Total=2162 [2020-10-06 00:02:22,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-06 00:02:22,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 74. [2020-10-06 00:02:22,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-06 00:02:22,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 184 transitions. [2020-10-06 00:02:22,856 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 184 transitions. Word has length 25 [2020-10-06 00:02:22,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:22,856 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 184 transitions. [2020-10-06 00:02:22,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-06 00:02:22,856 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 184 transitions. [2020-10-06 00:02:22,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 00:02:22,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:22,857 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:23,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:02:23,058 INFO L427 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:23,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:23,058 INFO L82 PathProgramCache]: Analyzing trace with hash -369281930, now seen corresponding path program 75 times [2020-10-06 00:02:23,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:23,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001385391] [2020-10-06 00:02:23,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:23,299 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:23,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001385391] [2020-10-06 00:02:23,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591476992] [2020-10-06 00:02:23,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:23,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-10-06 00:02:23,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:23,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-06 00:02:23,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:23,379 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:23,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:23,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-10-06 00:02:23,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [942610241] [2020-10-06 00:02:23,380 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:23,383 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:23,389 INFO L258 McrAutomatonBuilder]: Finished intersection with 31 states and 35 transitions. [2020-10-06 00:02:23,389 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:23,403 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:23,404 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:23,431 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [24388#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-06 00:02:23,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-06 00:02:23,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:23,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-06 00:02:23,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2020-10-06 00:02:23,432 INFO L87 Difference]: Start difference. First operand 74 states and 184 transitions. Second operand 22 states. [2020-10-06 00:02:24,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:24,197 INFO L93 Difference]: Finished difference Result 127 states and 292 transitions. [2020-10-06 00:02:24,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-06 00:02:24,198 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25 [2020-10-06 00:02:24,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:24,199 INFO L225 Difference]: With dead ends: 127 [2020-10-06 00:02:24,200 INFO L226 Difference]: Without dead ends: 121 [2020-10-06 00:02:24,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=611, Invalid=1741, Unknown=0, NotChecked=0, Total=2352 [2020-10-06 00:02:24,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-06 00:02:24,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 76. [2020-10-06 00:02:24,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-06 00:02:24,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 190 transitions. [2020-10-06 00:02:24,203 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 190 transitions. Word has length 25 [2020-10-06 00:02:24,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:24,203 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 190 transitions. [2020-10-06 00:02:24,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-06 00:02:24,203 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 190 transitions. [2020-10-06 00:02:24,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 00:02:24,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:24,204 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:24,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2020-10-06 00:02:24,412 INFO L427 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:24,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:24,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1001249448, now seen corresponding path program 76 times [2020-10-06 00:02:24,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:24,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32289661] [2020-10-06 00:02:24,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:24,642 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:24,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32289661] [2020-10-06 00:02:24,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528586069] [2020-10-06 00:02:24,643 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:24,690 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 00:02:24,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:24,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-06 00:02:24,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:24,708 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:24,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:24,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-10-06 00:02:24,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1307518003] [2020-10-06 00:02:24,709 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:24,711 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:24,715 INFO L258 McrAutomatonBuilder]: Finished intersection with 31 states and 35 transitions. [2020-10-06 00:02:24,715 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:24,716 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:24,716 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:24,751 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [24815#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-06 00:02:24,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-06 00:02:24,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:24,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-06 00:02:24,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2020-10-06 00:02:24,752 INFO L87 Difference]: Start difference. First operand 76 states and 190 transitions. Second operand 22 states. [2020-10-06 00:02:25,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:25,621 INFO L93 Difference]: Finished difference Result 125 states and 290 transitions. [2020-10-06 00:02:25,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-06 00:02:25,622 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25 [2020-10-06 00:02:25,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:25,623 INFO L225 Difference]: With dead ends: 125 [2020-10-06 00:02:25,623 INFO L226 Difference]: Without dead ends: 119 [2020-10-06 00:02:25,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=674, Invalid=1876, Unknown=0, NotChecked=0, Total=2550 [2020-10-06 00:02:25,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-06 00:02:25,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 78. [2020-10-06 00:02:25,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-06 00:02:25,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 196 transitions. [2020-10-06 00:02:25,627 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 196 transitions. Word has length 25 [2020-10-06 00:02:25,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:25,627 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 196 transitions. [2020-10-06 00:02:25,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-06 00:02:25,628 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 196 transitions. [2020-10-06 00:02:25,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 00:02:25,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:25,628 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:25,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:02:25,839 INFO L427 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:25,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:25,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1871832762, now seen corresponding path program 77 times [2020-10-06 00:02:25,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:25,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427199868] [2020-10-06 00:02:25,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:26,060 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:26,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427199868] [2020-10-06 00:02:26,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799063947] [2020-10-06 00:02:26,061 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:26,114 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-10-06 00:02:26,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:26,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-06 00:02:26,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:26,131 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:26,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:26,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-10-06 00:02:26,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [594770213] [2020-10-06 00:02:26,132 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:26,134 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:26,138 INFO L258 McrAutomatonBuilder]: Finished intersection with 31 states and 35 transitions. [2020-10-06 00:02:26,138 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:26,147 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:26,147 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:26,173 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [25248#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-06 00:02:26,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-06 00:02:26,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:26,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-06 00:02:26,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2020-10-06 00:02:26,174 INFO L87 Difference]: Start difference. First operand 78 states and 196 transitions. Second operand 22 states. [2020-10-06 00:02:27,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:27,106 INFO L93 Difference]: Finished difference Result 123 states and 288 transitions. [2020-10-06 00:02:27,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-06 00:02:27,107 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25 [2020-10-06 00:02:27,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:27,108 INFO L225 Difference]: With dead ends: 123 [2020-10-06 00:02:27,108 INFO L226 Difference]: Without dead ends: 117 [2020-10-06 00:02:27,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=753, Invalid=2003, Unknown=0, NotChecked=0, Total=2756 [2020-10-06 00:02:27,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-06 00:02:27,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 80. [2020-10-06 00:02:27,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-06 00:02:27,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 202 transitions. [2020-10-06 00:02:27,112 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 202 transitions. Word has length 25 [2020-10-06 00:02:27,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:27,112 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 202 transitions. [2020-10-06 00:02:27,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-06 00:02:27,112 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 202 transitions. [2020-10-06 00:02:27,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 00:02:27,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:27,113 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:27,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:02:27,324 INFO L427 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:27,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:27,324 INFO L82 PathProgramCache]: Analyzing trace with hash -248080228, now seen corresponding path program 78 times [2020-10-06 00:02:27,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:27,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697919798] [2020-10-06 00:02:27,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:27,525 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:27,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697919798] [2020-10-06 00:02:27,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535225667] [2020-10-06 00:02:27,526 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:27,578 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-10-06 00:02:27,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:27,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-06 00:02:27,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:27,599 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:27,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:27,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-10-06 00:02:27,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [325213106] [2020-10-06 00:02:27,600 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:27,601 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:27,606 INFO L258 McrAutomatonBuilder]: Finished intersection with 31 states and 35 transitions. [2020-10-06 00:02:27,606 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:27,613 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:27,613 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:27,638 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [25687#(and (<= ~j~0 16) (< ~i~0 46))] [2020-10-06 00:02:27,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-06 00:02:27,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:27,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-06 00:02:27,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2020-10-06 00:02:27,639 INFO L87 Difference]: Start difference. First operand 80 states and 202 transitions. Second operand 22 states. [2020-10-06 00:02:28,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:28,653 INFO L93 Difference]: Finished difference Result 121 states and 286 transitions. [2020-10-06 00:02:28,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-06 00:02:28,654 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25 [2020-10-06 00:02:28,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:28,655 INFO L225 Difference]: With dead ends: 121 [2020-10-06 00:02:28,656 INFO L226 Difference]: Without dead ends: 115 [2020-10-06 00:02:28,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=848, Invalid=2122, Unknown=0, NotChecked=0, Total=2970 [2020-10-06 00:02:28,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-06 00:02:28,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 82. [2020-10-06 00:02:28,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-06 00:02:28,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 208 transitions. [2020-10-06 00:02:28,659 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 208 transitions. Word has length 25 [2020-10-06 00:02:28,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:28,659 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 208 transitions. [2020-10-06 00:02:28,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-06 00:02:28,659 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 208 transitions. [2020-10-06 00:02:28,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 00:02:28,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:28,659 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:28,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2020-10-06 00:02:28,860 INFO L427 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:28,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:28,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1497212162, now seen corresponding path program 79 times [2020-10-06 00:02:28,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:28,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039906892] [2020-10-06 00:02:28,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:28,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:29,072 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:29,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039906892] [2020-10-06 00:02:29,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721772198] [2020-10-06 00:02:29,073 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:29,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-06 00:02:29,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:29,152 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:29,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:29,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-10-06 00:02:29,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1997563100] [2020-10-06 00:02:29,152 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:29,154 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:29,159 INFO L258 McrAutomatonBuilder]: Finished intersection with 31 states and 35 transitions. [2020-10-06 00:02:29,160 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:29,168 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:29,168 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:29,195 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [26132#(and (<= ~j~0 18) (< ~i~0 46))] [2020-10-06 00:02:29,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-06 00:02:29,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:29,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-06 00:02:29,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2020-10-06 00:02:29,196 INFO L87 Difference]: Start difference. First operand 82 states and 208 transitions. Second operand 22 states. [2020-10-06 00:02:30,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:30,295 INFO L93 Difference]: Finished difference Result 121 states and 289 transitions. [2020-10-06 00:02:30,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-06 00:02:30,295 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25 [2020-10-06 00:02:30,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:30,296 INFO L225 Difference]: With dead ends: 121 [2020-10-06 00:02:30,297 INFO L226 Difference]: Without dead ends: 115 [2020-10-06 00:02:30,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=959, Invalid=2233, Unknown=0, NotChecked=0, Total=3192 [2020-10-06 00:02:30,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-06 00:02:30,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 84. [2020-10-06 00:02:30,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-06 00:02:30,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 216 transitions. [2020-10-06 00:02:30,299 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 216 transitions. Word has length 25 [2020-10-06 00:02:30,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:30,300 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 216 transitions. [2020-10-06 00:02:30,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-06 00:02:30,300 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 216 transitions. [2020-10-06 00:02:30,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 00:02:30,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:30,300 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:30,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:02:30,501 INFO L427 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:30,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:30,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1480634912, now seen corresponding path program 80 times [2020-10-06 00:02:30,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:30,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765148300] [2020-10-06 00:02:30,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:30,713 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:30,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765148300] [2020-10-06 00:02:30,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262268210] [2020-10-06 00:02:30,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:30,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:02:30,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:30,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-06 00:02:30,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:30,793 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:30,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:30,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-10-06 00:02:30,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1432471370] [2020-10-06 00:02:30,794 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:30,797 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:30,803 INFO L258 McrAutomatonBuilder]: Finished intersection with 31 states and 35 transitions. [2020-10-06 00:02:30,803 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:30,813 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:30,813 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:30,838 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [26585#(and (<= ~j~0 20) (< ~i~0 46))] [2020-10-06 00:02:30,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-06 00:02:30,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:30,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-06 00:02:30,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2020-10-06 00:02:30,839 INFO L87 Difference]: Start difference. First operand 84 states and 216 transitions. Second operand 22 states. [2020-10-06 00:02:31,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:31,978 INFO L93 Difference]: Finished difference Result 122 states and 299 transitions. [2020-10-06 00:02:31,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-06 00:02:31,978 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25 [2020-10-06 00:02:31,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:31,979 INFO L225 Difference]: With dead ends: 122 [2020-10-06 00:02:31,979 INFO L226 Difference]: Without dead ends: 110 [2020-10-06 00:02:31,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1084, Invalid=2338, Unknown=0, NotChecked=0, Total=3422 [2020-10-06 00:02:31,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-06 00:02:31,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 66. [2020-10-06 00:02:31,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-06 00:02:31,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 161 transitions. [2020-10-06 00:02:31,982 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 161 transitions. Word has length 25 [2020-10-06 00:02:31,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:31,982 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 161 transitions. [2020-10-06 00:02:31,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-06 00:02:31,982 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 161 transitions. [2020-10-06 00:02:31,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-06 00:02:31,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:31,985 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:32,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:02:32,192 INFO L427 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:32,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:32,193 INFO L82 PathProgramCache]: Analyzing trace with hash 601326971, now seen corresponding path program 81 times [2020-10-06 00:02:32,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:32,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085444395] [2020-10-06 00:02:32,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:32,496 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:32,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085444395] [2020-10-06 00:02:32,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332232113] [2020-10-06 00:02:32,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:32,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-10-06 00:02:32,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:32,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-06 00:02:32,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:32,565 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:32,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:32,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2020-10-06 00:02:32,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2028389048] [2020-10-06 00:02:32,566 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:32,568 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:32,574 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 42 transitions. [2020-10-06 00:02:32,574 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:32,578 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:32,578 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:32,615 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [27011#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-06 00:02:32,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-06 00:02:32,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:32,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-06 00:02:32,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2020-10-06 00:02:32,616 INFO L87 Difference]: Start difference. First operand 66 states and 161 transitions. Second operand 23 states. [2020-10-06 00:02:33,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:33,220 INFO L93 Difference]: Finished difference Result 118 states and 270 transitions. [2020-10-06 00:02:33,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-06 00:02:33,221 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 26 [2020-10-06 00:02:33,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:33,222 INFO L225 Difference]: With dead ends: 118 [2020-10-06 00:02:33,222 INFO L226 Difference]: Without dead ends: 112 [2020-10-06 00:02:33,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=527, Invalid=1365, Unknown=0, NotChecked=0, Total=1892 [2020-10-06 00:02:33,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-06 00:02:33,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 73. [2020-10-06 00:02:33,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-06 00:02:33,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 180 transitions. [2020-10-06 00:02:33,225 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 180 transitions. Word has length 26 [2020-10-06 00:02:33,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:33,226 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 180 transitions. [2020-10-06 00:02:33,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-06 00:02:33,226 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 180 transitions. [2020-10-06 00:02:33,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-06 00:02:33,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:33,226 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:33,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:02:33,427 INFO L427 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:33,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:33,428 INFO L82 PathProgramCache]: Analyzing trace with hash 2046346461, now seen corresponding path program 82 times [2020-10-06 00:02:33,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:33,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209219847] [2020-10-06 00:02:33,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:33,709 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:33,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209219847] [2020-10-06 00:02:33,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455554502] [2020-10-06 00:02:33,710 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:33,761 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 00:02:33,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:33,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-06 00:02:33,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:33,775 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:33,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:33,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2020-10-06 00:02:33,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1368819888] [2020-10-06 00:02:33,776 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:33,778 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:33,783 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 40 transitions. [2020-10-06 00:02:33,783 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:33,786 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:33,786 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:33,819 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [27415#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-06 00:02:33,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-06 00:02:33,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:33,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-06 00:02:33,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2020-10-06 00:02:33,820 INFO L87 Difference]: Start difference. First operand 73 states and 180 transitions. Second operand 23 states. [2020-10-06 00:02:34,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:34,514 INFO L93 Difference]: Finished difference Result 115 states and 266 transitions. [2020-10-06 00:02:34,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-06 00:02:34,515 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 26 [2020-10-06 00:02:34,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:34,516 INFO L225 Difference]: With dead ends: 115 [2020-10-06 00:02:34,516 INFO L226 Difference]: Without dead ends: 109 [2020-10-06 00:02:34,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=543, Invalid=1527, Unknown=0, NotChecked=0, Total=2070 [2020-10-06 00:02:34,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-06 00:02:34,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 75. [2020-10-06 00:02:34,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-06 00:02:34,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 186 transitions. [2020-10-06 00:02:34,519 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 186 transitions. Word has length 26 [2020-10-06 00:02:34,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:34,519 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 186 transitions. [2020-10-06 00:02:34,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-06 00:02:34,519 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 186 transitions. [2020-10-06 00:02:34,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-06 00:02:34,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:34,520 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:34,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:02:34,728 INFO L427 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:34,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:34,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1288074431, now seen corresponding path program 83 times [2020-10-06 00:02:34,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:34,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911378525] [2020-10-06 00:02:34,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:35,001 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:35,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911378525] [2020-10-06 00:02:35,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613776132] [2020-10-06 00:02:35,002 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:35,053 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-10-06 00:02:35,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:35,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-06 00:02:35,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:35,069 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:35,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:35,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2020-10-06 00:02:35,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1618974058] [2020-10-06 00:02:35,070 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:35,071 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:35,076 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 40 transitions. [2020-10-06 00:02:35,077 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:35,080 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:35,080 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:35,112 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [27824#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-06 00:02:35,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-06 00:02:35,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:35,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-06 00:02:35,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2020-10-06 00:02:35,113 INFO L87 Difference]: Start difference. First operand 75 states and 186 transitions. Second operand 23 states. [2020-10-06 00:02:35,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:35,879 INFO L93 Difference]: Finished difference Result 113 states and 264 transitions. [2020-10-06 00:02:35,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 00:02:35,880 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 26 [2020-10-06 00:02:35,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:35,881 INFO L225 Difference]: With dead ends: 113 [2020-10-06 00:02:35,881 INFO L226 Difference]: Without dead ends: 107 [2020-10-06 00:02:35,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=575, Invalid=1681, Unknown=0, NotChecked=0, Total=2256 [2020-10-06 00:02:35,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-06 00:02:35,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 77. [2020-10-06 00:02:35,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-06 00:02:35,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 192 transitions. [2020-10-06 00:02:35,884 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 192 transitions. Word has length 26 [2020-10-06 00:02:35,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:35,884 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 192 transitions. [2020-10-06 00:02:35,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-06 00:02:35,885 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 192 transitions. [2020-10-06 00:02:35,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-06 00:02:35,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:35,885 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:36,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:02:36,094 INFO L427 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:36,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:36,094 INFO L82 PathProgramCache]: Analyzing trace with hash -442321631, now seen corresponding path program 84 times [2020-10-06 00:02:36,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:36,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352752362] [2020-10-06 00:02:36,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:36,356 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:36,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352752362] [2020-10-06 00:02:36,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696183966] [2020-10-06 00:02:36,357 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:36,411 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-10-06 00:02:36,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:36,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-06 00:02:36,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:36,431 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:36,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:36,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2020-10-06 00:02:36,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [638477422] [2020-10-06 00:02:36,432 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:36,434 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:36,439 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 40 transitions. [2020-10-06 00:02:36,439 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:36,444 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:36,444 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:36,476 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [28239#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-06 00:02:36,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-06 00:02:36,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:36,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-06 00:02:36,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2020-10-06 00:02:36,478 INFO L87 Difference]: Start difference. First operand 77 states and 192 transitions. Second operand 23 states. [2020-10-06 00:02:37,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:37,345 INFO L93 Difference]: Finished difference Result 111 states and 262 transitions. [2020-10-06 00:02:37,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-06 00:02:37,346 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 26 [2020-10-06 00:02:37,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:37,347 INFO L225 Difference]: With dead ends: 111 [2020-10-06 00:02:37,347 INFO L226 Difference]: Without dead ends: 105 [2020-10-06 00:02:37,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=623, Invalid=1827, Unknown=0, NotChecked=0, Total=2450 [2020-10-06 00:02:37,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-06 00:02:37,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 79. [2020-10-06 00:02:37,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-06 00:02:37,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 198 transitions. [2020-10-06 00:02:37,351 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 198 transitions. Word has length 26 [2020-10-06 00:02:37,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:37,351 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 198 transitions. [2020-10-06 00:02:37,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-06 00:02:37,352 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 198 transitions. [2020-10-06 00:02:37,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-06 00:02:37,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:37,352 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:37,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:02:37,553 INFO L427 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:37,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:37,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1074289149, now seen corresponding path program 85 times [2020-10-06 00:02:37,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:37,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83083181] [2020-10-06 00:02:37,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:37,787 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:37,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83083181] [2020-10-06 00:02:37,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217545512] [2020-10-06 00:02:37,788 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:37,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:37,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-06 00:02:37,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:37,857 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:37,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:37,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2020-10-06 00:02:37,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [952476779] [2020-10-06 00:02:37,857 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:37,859 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:37,865 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 40 transitions. [2020-10-06 00:02:37,865 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:37,875 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:37,875 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:37,898 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [28660#(and (<= ~j~0 16) (< ~i~0 46))] [2020-10-06 00:02:37,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-06 00:02:37,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:37,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-06 00:02:37,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2020-10-06 00:02:37,899 INFO L87 Difference]: Start difference. First operand 79 states and 198 transitions. Second operand 23 states. [2020-10-06 00:02:38,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:38,855 INFO L93 Difference]: Finished difference Result 109 states and 260 transitions. [2020-10-06 00:02:38,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-06 00:02:38,856 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 26 [2020-10-06 00:02:38,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:38,857 INFO L225 Difference]: With dead ends: 109 [2020-10-06 00:02:38,857 INFO L226 Difference]: Without dead ends: 103 [2020-10-06 00:02:38,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=687, Invalid=1965, Unknown=0, NotChecked=0, Total=2652 [2020-10-06 00:02:38,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-06 00:02:38,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 81. [2020-10-06 00:02:38,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-06 00:02:38,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 204 transitions. [2020-10-06 00:02:38,860 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 204 transitions. Word has length 26 [2020-10-06 00:02:38,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:38,860 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 204 transitions. [2020-10-06 00:02:38,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-06 00:02:38,861 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 204 transitions. [2020-10-06 00:02:38,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-06 00:02:38,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:38,861 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:39,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2020-10-06 00:02:39,062 INFO L427 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:39,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:39,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1798793061, now seen corresponding path program 86 times [2020-10-06 00:02:39,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:39,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992098384] [2020-10-06 00:02:39,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:39,289 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:39,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992098384] [2020-10-06 00:02:39,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836515214] [2020-10-06 00:02:39,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:39,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:02:39,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:39,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-06 00:02:39,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:39,359 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:39,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:39,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2020-10-06 00:02:39,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [769500686] [2020-10-06 00:02:39,360 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:39,363 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:39,369 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 40 transitions. [2020-10-06 00:02:39,369 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:39,374 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:39,374 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:39,405 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [29087#(and (<= ~j~0 18) (< ~i~0 46))] [2020-10-06 00:02:39,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-06 00:02:39,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:39,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-06 00:02:39,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2020-10-06 00:02:39,406 INFO L87 Difference]: Start difference. First operand 81 states and 204 transitions. Second operand 23 states. [2020-10-06 00:02:40,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:40,358 INFO L93 Difference]: Finished difference Result 107 states and 258 transitions. [2020-10-06 00:02:40,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-06 00:02:40,359 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 26 [2020-10-06 00:02:40,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:40,360 INFO L225 Difference]: With dead ends: 107 [2020-10-06 00:02:40,360 INFO L226 Difference]: Without dead ends: 101 [2020-10-06 00:02:40,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=767, Invalid=2095, Unknown=0, NotChecked=0, Total=2862 [2020-10-06 00:02:40,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-06 00:02:40,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 83. [2020-10-06 00:02:40,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-06 00:02:40,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 210 transitions. [2020-10-06 00:02:40,363 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 210 transitions. Word has length 26 [2020-10-06 00:02:40,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:40,364 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 210 transitions. [2020-10-06 00:02:40,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-06 00:02:40,364 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 210 transitions. [2020-10-06 00:02:40,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-06 00:02:40,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:40,364 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:40,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:02:40,573 INFO L427 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:40,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:40,573 INFO L82 PathProgramCache]: Analyzing trace with hash -321119929, now seen corresponding path program 87 times [2020-10-06 00:02:40,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:40,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510126552] [2020-10-06 00:02:40,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:40,811 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:40,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510126552] [2020-10-06 00:02:40,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86071252] [2020-10-06 00:02:40,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:40,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-10-06 00:02:40,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:40,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-06 00:02:40,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:40,954 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:40,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:40,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2020-10-06 00:02:40,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [58245923] [2020-10-06 00:02:40,955 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:40,960 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:40,970 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 40 transitions. [2020-10-06 00:02:40,970 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:40,976 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:40,976 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:41,014 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [29520#(and (<= ~j~0 20) (< ~i~0 46))] [2020-10-06 00:02:41,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-06 00:02:41,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:41,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-06 00:02:41,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2020-10-06 00:02:41,015 INFO L87 Difference]: Start difference. First operand 83 states and 210 transitions. Second operand 23 states. [2020-10-06 00:02:42,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:42,171 INFO L93 Difference]: Finished difference Result 105 states and 256 transitions. [2020-10-06 00:02:42,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-06 00:02:42,172 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 26 [2020-10-06 00:02:42,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:42,173 INFO L225 Difference]: With dead ends: 105 [2020-10-06 00:02:42,173 INFO L226 Difference]: Without dead ends: 99 [2020-10-06 00:02:42,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 758 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=863, Invalid=2217, Unknown=0, NotChecked=0, Total=3080 [2020-10-06 00:02:42,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-06 00:02:42,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 85. [2020-10-06 00:02:42,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-06 00:02:42,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 216 transitions. [2020-10-06 00:02:42,180 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 216 transitions. Word has length 26 [2020-10-06 00:02:42,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:42,181 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 216 transitions. [2020-10-06 00:02:42,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-06 00:02:42,181 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 216 transitions. [2020-10-06 00:02:42,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-06 00:02:42,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:42,181 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:42,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2020-10-06 00:02:42,390 INFO L427 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:42,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:42,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1570251863, now seen corresponding path program 88 times [2020-10-06 00:02:42,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:42,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375257532] [2020-10-06 00:02:42,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:42,621 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:42,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375257532] [2020-10-06 00:02:42,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896583086] [2020-10-06 00:02:42,622 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:42,670 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 00:02:42,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:42,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-06 00:02:42,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:42,699 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:42,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:42,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2020-10-06 00:02:42,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [115718402] [2020-10-06 00:02:42,700 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:42,703 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:42,711 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 40 transitions. [2020-10-06 00:02:42,712 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:42,716 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:42,716 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:42,747 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [29959#(and (<= ~j~0 22) (< ~i~0 46))] [2020-10-06 00:02:42,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-06 00:02:42,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:42,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-06 00:02:42,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2020-10-06 00:02:42,749 INFO L87 Difference]: Start difference. First operand 85 states and 216 transitions. Second operand 23 states. [2020-10-06 00:02:43,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:43,886 INFO L93 Difference]: Finished difference Result 105 states and 259 transitions. [2020-10-06 00:02:43,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-06 00:02:43,886 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 26 [2020-10-06 00:02:43,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:43,887 INFO L225 Difference]: With dead ends: 105 [2020-10-06 00:02:43,887 INFO L226 Difference]: Without dead ends: 99 [2020-10-06 00:02:43,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 843 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=975, Invalid=2331, Unknown=0, NotChecked=0, Total=3306 [2020-10-06 00:02:43,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-06 00:02:43,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 87. [2020-10-06 00:02:43,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-06 00:02:43,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 224 transitions. [2020-10-06 00:02:43,891 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 224 transitions. Word has length 26 [2020-10-06 00:02:43,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:43,891 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 224 transitions. [2020-10-06 00:02:43,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-06 00:02:43,892 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 224 transitions. [2020-10-06 00:02:43,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-06 00:02:43,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:43,892 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:44,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2020-10-06 00:02:44,101 INFO L427 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:44,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:44,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1553674613, now seen corresponding path program 89 times [2020-10-06 00:02:44,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:44,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300573349] [2020-10-06 00:02:44,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:44,323 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:44,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300573349] [2020-10-06 00:02:44,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68141169] [2020-10-06 00:02:44,323 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:44,372 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-10-06 00:02:44,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:44,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-06 00:02:44,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:44,397 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:44,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:44,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2020-10-06 00:02:44,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1787890601] [2020-10-06 00:02:44,398 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:44,401 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:44,407 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 40 transitions. [2020-10-06 00:02:44,408 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:44,412 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:44,412 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:44,444 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [30406#(and (<= ~j~0 24) (< ~i~0 46))] [2020-10-06 00:02:44,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-06 00:02:44,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:44,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-06 00:02:44,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2020-10-06 00:02:44,446 INFO L87 Difference]: Start difference. First operand 87 states and 224 transitions. Second operand 23 states. [2020-10-06 00:02:45,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:45,697 INFO L93 Difference]: Finished difference Result 105 states and 267 transitions. [2020-10-06 00:02:45,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-06 00:02:45,698 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 26 [2020-10-06 00:02:45,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:45,699 INFO L225 Difference]: With dead ends: 105 [2020-10-06 00:02:45,699 INFO L226 Difference]: Without dead ends: 93 [2020-10-06 00:02:45,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1101, Invalid=2439, Unknown=0, NotChecked=0, Total=3540 [2020-10-06 00:02:45,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-06 00:02:45,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 66. [2020-10-06 00:02:45,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-06 00:02:45,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 162 transitions. [2020-10-06 00:02:45,702 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 162 transitions. Word has length 26 [2020-10-06 00:02:45,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:45,702 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 162 transitions. [2020-10-06 00:02:45,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-06 00:02:45,702 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 162 transitions. [2020-10-06 00:02:45,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-06 00:02:45,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:45,702 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:45,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:02:45,903 INFO L427 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:45,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:45,904 INFO L82 PathProgramCache]: Analyzing trace with hash -473673969, now seen corresponding path program 90 times [2020-10-06 00:02:45,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:45,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338276590] [2020-10-06 00:02:45,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:46,233 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:46,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338276590] [2020-10-06 00:02:46,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970286769] [2020-10-06 00:02:46,234 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:46,291 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-10-06 00:02:46,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:46,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-06 00:02:46,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:46,320 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:46,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:46,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2020-10-06 00:02:46,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1239176169] [2020-10-06 00:02:46,321 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:46,324 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:46,332 INFO L258 McrAutomatonBuilder]: Finished intersection with 37 states and 47 transitions. [2020-10-06 00:02:46,332 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:46,342 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:46,343 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:46,369 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:46,370 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:46,393 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:46,393 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:46,399 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:46,400 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:46,406 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [30819#(and (<= ~j~0 4) (< ~i~0 46))] [2020-10-06 00:02:46,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-06 00:02:46,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:46,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-06 00:02:46,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2020-10-06 00:02:46,407 INFO L87 Difference]: Start difference. First operand 66 states and 162 transitions. Second operand 24 states. [2020-10-06 00:02:47,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:47,219 INFO L93 Difference]: Finished difference Result 102 states and 238 transitions. [2020-10-06 00:02:47,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-06 00:02:47,220 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27 [2020-10-06 00:02:47,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:47,222 INFO L225 Difference]: With dead ends: 102 [2020-10-06 00:02:47,222 INFO L226 Difference]: Without dead ends: 96 [2020-10-06 00:02:47,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=577, Invalid=1403, Unknown=0, NotChecked=0, Total=1980 [2020-10-06 00:02:47,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-06 00:02:47,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 74. [2020-10-06 00:02:47,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-06 00:02:47,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 182 transitions. [2020-10-06 00:02:47,226 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 182 transitions. Word has length 27 [2020-10-06 00:02:47,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:47,226 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 182 transitions. [2020-10-06 00:02:47,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-06 00:02:47,227 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 182 transitions. [2020-10-06 00:02:47,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-06 00:02:47,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:47,227 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:47,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:02:47,428 INFO L427 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:47,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:47,429 INFO L82 PathProgramCache]: Analyzing trace with hash 915619313, now seen corresponding path program 91 times [2020-10-06 00:02:47,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:47,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918300926] [2020-10-06 00:02:47,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:47,714 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:47,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918300926] [2020-10-06 00:02:47,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579235567] [2020-10-06 00:02:47,715 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:47,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-06 00:02:47,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:47,815 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:47,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:47,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2020-10-06 00:02:47,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [79707115] [2020-10-06 00:02:47,816 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:47,819 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:47,827 INFO L258 McrAutomatonBuilder]: Finished intersection with 33 states and 37 transitions. [2020-10-06 00:02:47,827 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:47,837 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:47,838 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:47,862 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [31213#(and (<= ~j~0 6) (< ~i~0 46))] [2020-10-06 00:02:47,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-06 00:02:47,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:47,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-06 00:02:47,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2020-10-06 00:02:47,863 INFO L87 Difference]: Start difference. First operand 74 states and 182 transitions. Second operand 24 states. [2020-10-06 00:02:48,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:48,614 INFO L93 Difference]: Finished difference Result 142 states and 320 transitions. [2020-10-06 00:02:48,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 00:02:48,615 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27 [2020-10-06 00:02:48,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:48,616 INFO L225 Difference]: With dead ends: 142 [2020-10-06 00:02:48,616 INFO L226 Difference]: Without dead ends: 136 [2020-10-06 00:02:48,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=636, Invalid=1716, Unknown=0, NotChecked=0, Total=2352 [2020-10-06 00:02:48,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-06 00:02:48,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 76. [2020-10-06 00:02:48,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-06 00:02:48,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 188 transitions. [2020-10-06 00:02:48,619 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 188 transitions. Word has length 27 [2020-10-06 00:02:48,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:48,619 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 188 transitions. [2020-10-06 00:02:48,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-06 00:02:48,619 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 188 transitions. [2020-10-06 00:02:48,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-06 00:02:48,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:48,620 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:48,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:02:48,821 INFO L427 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:48,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:48,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1934328493, now seen corresponding path program 92 times [2020-10-06 00:02:48,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:48,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741029538] [2020-10-06 00:02:48,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:49,143 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:49,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741029538] [2020-10-06 00:02:49,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163732800] [2020-10-06 00:02:49,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:49,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:02:49,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:49,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-06 00:02:49,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:49,207 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:49,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:49,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2020-10-06 00:02:49,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1422010562] [2020-10-06 00:02:49,208 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:49,210 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:49,218 INFO L258 McrAutomatonBuilder]: Finished intersection with 33 states and 37 transitions. [2020-10-06 00:02:49,219 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:49,224 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:49,224 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:49,257 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [31659#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-06 00:02:49,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-06 00:02:49,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:49,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-06 00:02:49,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2020-10-06 00:02:49,258 INFO L87 Difference]: Start difference. First operand 76 states and 188 transitions. Second operand 24 states. [2020-10-06 00:02:50,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:50,087 INFO L93 Difference]: Finished difference Result 139 states and 316 transitions. [2020-10-06 00:02:50,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-06 00:02:50,088 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27 [2020-10-06 00:02:50,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:50,089 INFO L225 Difference]: With dead ends: 139 [2020-10-06 00:02:50,089 INFO L226 Difference]: Without dead ends: 133 [2020-10-06 00:02:50,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=665, Invalid=1885, Unknown=0, NotChecked=0, Total=2550 [2020-10-06 00:02:50,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-06 00:02:50,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 78. [2020-10-06 00:02:50,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-06 00:02:50,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 194 transitions. [2020-10-06 00:02:50,092 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 194 transitions. Word has length 27 [2020-10-06 00:02:50,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:50,092 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 194 transitions. [2020-10-06 00:02:50,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-06 00:02:50,092 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 194 transitions. [2020-10-06 00:02:50,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-06 00:02:50,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:50,093 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:50,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2020-10-06 00:02:50,293 INFO L427 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:50,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:50,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1602366773, now seen corresponding path program 93 times [2020-10-06 00:02:50,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:50,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281857154] [2020-10-06 00:02:50,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:50,591 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:50,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281857154] [2020-10-06 00:02:50,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367648353] [2020-10-06 00:02:50,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:50,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-10-06 00:02:50,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:50,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-06 00:02:50,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:50,663 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:50,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:50,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2020-10-06 00:02:50,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [679789097] [2020-10-06 00:02:50,664 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:50,666 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:50,674 INFO L258 McrAutomatonBuilder]: Finished intersection with 33 states and 37 transitions. [2020-10-06 00:02:50,674 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:50,692 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:50,693 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:50,717 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [32110#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-06 00:02:50,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-06 00:02:50,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:50,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-06 00:02:50,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2020-10-06 00:02:50,718 INFO L87 Difference]: Start difference. First operand 78 states and 194 transitions. Second operand 24 states. [2020-10-06 00:02:51,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:51,634 INFO L93 Difference]: Finished difference Result 137 states and 314 transitions. [2020-10-06 00:02:51,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-06 00:02:51,635 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27 [2020-10-06 00:02:51,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:51,636 INFO L225 Difference]: With dead ends: 137 [2020-10-06 00:02:51,637 INFO L226 Difference]: Without dead ends: 131 [2020-10-06 00:02:51,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=710, Invalid=2046, Unknown=0, NotChecked=0, Total=2756 [2020-10-06 00:02:51,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-06 00:02:51,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 80. [2020-10-06 00:02:51,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-06 00:02:51,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 200 transitions. [2020-10-06 00:02:51,639 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 200 transitions. Word has length 27 [2020-10-06 00:02:51,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:51,640 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 200 transitions. [2020-10-06 00:02:51,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-06 00:02:51,640 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 200 transitions. [2020-10-06 00:02:51,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-06 00:02:51,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:51,640 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:51,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:02:51,841 INFO L427 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:51,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:51,842 INFO L82 PathProgramCache]: Analyzing trace with hash -128029289, now seen corresponding path program 94 times [2020-10-06 00:02:51,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:51,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813658415] [2020-10-06 00:02:51,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:52,123 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:52,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813658415] [2020-10-06 00:02:52,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082069304] [2020-10-06 00:02:52,123 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:52,172 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 00:02:52,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:52,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-06 00:02:52,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:52,191 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:52,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:52,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2020-10-06 00:02:52,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1702636312] [2020-10-06 00:02:52,191 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:52,196 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:52,203 INFO L258 McrAutomatonBuilder]: Finished intersection with 33 states and 37 transitions. [2020-10-06 00:02:52,203 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:52,208 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:52,208 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:52,239 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [32567#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-06 00:02:52,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-06 00:02:52,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:52,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-06 00:02:52,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2020-10-06 00:02:52,240 INFO L87 Difference]: Start difference. First operand 80 states and 200 transitions. Second operand 24 states. [2020-10-06 00:02:53,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:53,346 INFO L93 Difference]: Finished difference Result 135 states and 312 transitions. [2020-10-06 00:02:53,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-06 00:02:53,347 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27 [2020-10-06 00:02:53,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:53,349 INFO L225 Difference]: With dead ends: 135 [2020-10-06 00:02:53,349 INFO L226 Difference]: Without dead ends: 129 [2020-10-06 00:02:53,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=771, Invalid=2199, Unknown=0, NotChecked=0, Total=2970 [2020-10-06 00:02:53,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-06 00:02:53,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 82. [2020-10-06 00:02:53,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-06 00:02:53,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 206 transitions. [2020-10-06 00:02:53,354 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 206 transitions. Word has length 27 [2020-10-06 00:02:53,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:53,355 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 206 transitions. [2020-10-06 00:02:53,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-06 00:02:53,355 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 206 transitions. [2020-10-06 00:02:53,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-06 00:02:53,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:53,355 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:53,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2020-10-06 00:02:53,565 INFO L427 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:53,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:53,566 INFO L82 PathProgramCache]: Analyzing trace with hash -759996807, now seen corresponding path program 95 times [2020-10-06 00:02:53,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:53,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024151968] [2020-10-06 00:02:53,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:53,844 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:53,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024151968] [2020-10-06 00:02:53,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833428271] [2020-10-06 00:02:53,845 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:53,902 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2020-10-06 00:02:53,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:53,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-06 00:02:53,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:53,922 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:53,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:53,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2020-10-06 00:02:53,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1003793298] [2020-10-06 00:02:53,923 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:53,925 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:53,932 INFO L258 McrAutomatonBuilder]: Finished intersection with 33 states and 37 transitions. [2020-10-06 00:02:53,932 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:53,946 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:53,947 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:53,978 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [33030#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-06 00:02:53,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-06 00:02:53,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:53,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-06 00:02:53,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2020-10-06 00:02:53,980 INFO L87 Difference]: Start difference. First operand 82 states and 206 transitions. Second operand 24 states. [2020-10-06 00:02:55,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:55,059 INFO L93 Difference]: Finished difference Result 133 states and 310 transitions. [2020-10-06 00:02:55,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-06 00:02:55,060 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27 [2020-10-06 00:02:55,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:55,061 INFO L225 Difference]: With dead ends: 133 [2020-10-06 00:02:55,061 INFO L226 Difference]: Without dead ends: 127 [2020-10-06 00:02:55,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=848, Invalid=2344, Unknown=0, NotChecked=0, Total=3192 [2020-10-06 00:02:55,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-06 00:02:55,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 84. [2020-10-06 00:02:55,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-06 00:02:55,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 212 transitions. [2020-10-06 00:02:55,064 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 212 transitions. Word has length 27 [2020-10-06 00:02:55,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:55,064 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 212 transitions. [2020-10-06 00:02:55,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-06 00:02:55,064 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 212 transitions. [2020-10-06 00:02:55,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-06 00:02:55,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:55,065 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:55,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:02:55,275 INFO L427 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:55,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:55,275 INFO L82 PathProgramCache]: Analyzing trace with hash 2113085403, now seen corresponding path program 96 times [2020-10-06 00:02:55,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:55,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73427539] [2020-10-06 00:02:55,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:55,591 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:55,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73427539] [2020-10-06 00:02:55,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690445704] [2020-10-06 00:02:55,592 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:55,683 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-10-06 00:02:55,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:55,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-06 00:02:55,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:55,718 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:55,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:55,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2020-10-06 00:02:55,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1040359348] [2020-10-06 00:02:55,720 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:55,723 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:55,730 INFO L258 McrAutomatonBuilder]: Finished intersection with 33 states and 37 transitions. [2020-10-06 00:02:55,731 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:55,736 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:55,736 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:55,784 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [33499#(and (<= ~j~0 16) (< ~i~0 46))] [2020-10-06 00:02:55,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-06 00:02:55,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:55,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-06 00:02:55,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2020-10-06 00:02:55,785 INFO L87 Difference]: Start difference. First operand 84 states and 212 transitions. Second operand 24 states. [2020-10-06 00:02:57,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:57,079 INFO L93 Difference]: Finished difference Result 131 states and 308 transitions. [2020-10-06 00:02:57,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-06 00:02:57,080 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27 [2020-10-06 00:02:57,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:57,081 INFO L225 Difference]: With dead ends: 131 [2020-10-06 00:02:57,081 INFO L226 Difference]: Without dead ends: 125 [2020-10-06 00:02:57,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 896 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=941, Invalid=2481, Unknown=0, NotChecked=0, Total=3422 [2020-10-06 00:02:57,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-06 00:02:57,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 86. [2020-10-06 00:02:57,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-06 00:02:57,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 218 transitions. [2020-10-06 00:02:57,084 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 218 transitions. Word has length 27 [2020-10-06 00:02:57,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:57,085 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 218 transitions. [2020-10-06 00:02:57,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-06 00:02:57,085 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 218 transitions. [2020-10-06 00:02:57,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-06 00:02:57,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:57,086 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:57,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:02:57,296 INFO L427 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:57,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:57,296 INFO L82 PathProgramCache]: Analyzing trace with hash -6827587, now seen corresponding path program 97 times [2020-10-06 00:02:57,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:57,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403141792] [2020-10-06 00:02:57,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:57,565 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:57,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403141792] [2020-10-06 00:02:57,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115100107] [2020-10-06 00:02:57,565 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:57,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-06 00:02:57,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:57,634 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:57,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:57,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2020-10-06 00:02:57,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [242392879] [2020-10-06 00:02:57,635 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:57,637 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:57,642 INFO L258 McrAutomatonBuilder]: Finished intersection with 33 states and 37 transitions. [2020-10-06 00:02:57,642 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:57,646 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:57,646 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:57,678 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [33974#(and (<= ~j~0 18) (< ~i~0 46))] [2020-10-06 00:02:57,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-06 00:02:57,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:57,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-06 00:02:57,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2020-10-06 00:02:57,679 INFO L87 Difference]: Start difference. First operand 86 states and 218 transitions. Second operand 24 states. [2020-10-06 00:02:58,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:02:58,922 INFO L93 Difference]: Finished difference Result 129 states and 306 transitions. [2020-10-06 00:02:58,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-06 00:02:58,923 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27 [2020-10-06 00:02:58,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:02:58,924 INFO L225 Difference]: With dead ends: 129 [2020-10-06 00:02:58,924 INFO L226 Difference]: Without dead ends: 123 [2020-10-06 00:02:58,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1050, Invalid=2610, Unknown=0, NotChecked=0, Total=3660 [2020-10-06 00:02:58,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-06 00:02:58,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 88. [2020-10-06 00:02:58,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-06 00:02:58,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 224 transitions. [2020-10-06 00:02:58,927 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 224 transitions. Word has length 27 [2020-10-06 00:02:58,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:02:58,927 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 224 transitions. [2020-10-06 00:02:58,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-06 00:02:58,928 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 224 transitions. [2020-10-06 00:02:58,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-06 00:02:58,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:02:58,928 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:02:59,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-10-06 00:02:59,137 INFO L427 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:02:59,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:02:59,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1255959521, now seen corresponding path program 98 times [2020-10-06 00:02:59,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:02:59,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340857878] [2020-10-06 00:02:59,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:02:59,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:02:59,388 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:59,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340857878] [2020-10-06 00:02:59,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326042265] [2020-10-06 00:02:59,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:02:59,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:02:59,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:02:59,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-06 00:02:59,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:02:59,469 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:02:59,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:02:59,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2020-10-06 00:02:59,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1807949308] [2020-10-06 00:02:59,470 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:02:59,472 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:02:59,477 INFO L258 McrAutomatonBuilder]: Finished intersection with 33 states and 37 transitions. [2020-10-06 00:02:59,477 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:02:59,481 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:02:59,481 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:02:59,519 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [34455#(and (<= ~j~0 20) (< ~i~0 46))] [2020-10-06 00:02:59,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-06 00:02:59,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:02:59,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-06 00:02:59,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2020-10-06 00:02:59,520 INFO L87 Difference]: Start difference. First operand 88 states and 224 transitions. Second operand 24 states. [2020-10-06 00:03:00,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:03:00,851 INFO L93 Difference]: Finished difference Result 129 states and 309 transitions. [2020-10-06 00:03:00,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-06 00:03:00,851 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27 [2020-10-06 00:03:00,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:03:00,852 INFO L225 Difference]: With dead ends: 129 [2020-10-06 00:03:00,853 INFO L226 Difference]: Without dead ends: 123 [2020-10-06 00:03:00,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1096 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1175, Invalid=2731, Unknown=0, NotChecked=0, Total=3906 [2020-10-06 00:03:00,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-06 00:03:00,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 90. [2020-10-06 00:03:00,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-06 00:03:00,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 232 transitions. [2020-10-06 00:03:00,856 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 232 transitions. Word has length 27 [2020-10-06 00:03:00,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:03:00,856 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 232 transitions. [2020-10-06 00:03:00,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-06 00:03:00,856 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 232 transitions. [2020-10-06 00:03:00,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-06 00:03:00,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:03:00,857 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:03:01,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2020-10-06 00:03:01,058 INFO L427 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:03:01,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:03:01,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1239382271, now seen corresponding path program 99 times [2020-10-06 00:03:01,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:03:01,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257264651] [2020-10-06 00:03:01,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:03:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:01,317 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:01,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257264651] [2020-10-06 00:03:01,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053568530] [2020-10-06 00:03:01,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:03:01,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-10-06 00:03:01,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:03:01,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-06 00:03:01,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:03:01,398 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:01,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:03:01,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2020-10-06 00:03:01,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [784383171] [2020-10-06 00:03:01,399 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:03:01,402 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:03:01,407 INFO L258 McrAutomatonBuilder]: Finished intersection with 33 states and 37 transitions. [2020-10-06 00:03:01,408 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:03:01,411 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:01,411 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:01,444 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [34944#(and (<= ~j~0 22) (< ~i~0 46))] [2020-10-06 00:03:01,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-06 00:03:01,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:03:01,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-06 00:03:01,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2020-10-06 00:03:01,445 INFO L87 Difference]: Start difference. First operand 90 states and 232 transitions. Second operand 24 states. [2020-10-06 00:03:02,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:03:02,821 INFO L93 Difference]: Finished difference Result 130 states and 319 transitions. [2020-10-06 00:03:02,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-06 00:03:02,822 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27 [2020-10-06 00:03:02,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:03:02,823 INFO L225 Difference]: With dead ends: 130 [2020-10-06 00:03:02,823 INFO L226 Difference]: Without dead ends: 118 [2020-10-06 00:03:02,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1202 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1314, Invalid=2846, Unknown=0, NotChecked=0, Total=4160 [2020-10-06 00:03:02,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-06 00:03:02,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 70. [2020-10-06 00:03:02,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-06 00:03:02,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 171 transitions. [2020-10-06 00:03:02,827 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 171 transitions. Word has length 27 [2020-10-06 00:03:02,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:03:02,827 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 171 transitions. [2020-10-06 00:03:02,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-06 00:03:02,827 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 171 transitions. [2020-10-06 00:03:02,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-06 00:03:02,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:03:02,828 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:03:03,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:03:03,037 INFO L427 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:03:03,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:03:03,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1945349894, now seen corresponding path program 100 times [2020-10-06 00:03:03,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:03:03,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209056934] [2020-10-06 00:03:03,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:03:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:03,404 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:03,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209056934] [2020-10-06 00:03:03,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646508242] [2020-10-06 00:03:03,405 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:03:03,457 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 00:03:03,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:03:03,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-06 00:03:03,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:03:03,471 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:03,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:03:03,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-10-06 00:03:03,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2024466836] [2020-10-06 00:03:03,472 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:03:03,474 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:03:03,482 INFO L258 McrAutomatonBuilder]: Finished intersection with 37 states and 44 transitions. [2020-10-06 00:03:03,482 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:03:03,485 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:03,486 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:03,520 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [35402#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-06 00:03:03,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-06 00:03:03,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:03:03,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-06 00:03:03,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2020-10-06 00:03:03,521 INFO L87 Difference]: Start difference. First operand 70 states and 171 transitions. Second operand 25 states. [2020-10-06 00:03:04,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:03:04,261 INFO L93 Difference]: Finished difference Result 126 states and 288 transitions. [2020-10-06 00:03:04,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-06 00:03:04,261 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28 [2020-10-06 00:03:04,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:03:04,262 INFO L225 Difference]: With dead ends: 126 [2020-10-06 00:03:04,262 INFO L226 Difference]: Without dead ends: 120 [2020-10-06 00:03:04,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=632, Invalid=1624, Unknown=0, NotChecked=0, Total=2256 [2020-10-06 00:03:04,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-06 00:03:04,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 77. [2020-10-06 00:03:04,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-06 00:03:04,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 190 transitions. [2020-10-06 00:03:04,266 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 190 transitions. Word has length 28 [2020-10-06 00:03:04,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:03:04,266 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 190 transitions. [2020-10-06 00:03:04,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-06 00:03:04,266 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 190 transitions. [2020-10-06 00:03:04,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-06 00:03:04,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:03:04,267 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:03:04,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-10-06 00:03:04,471 INFO L427 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:03:04,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:03:04,471 INFO L82 PathProgramCache]: Analyzing trace with hash -556056612, now seen corresponding path program 101 times [2020-10-06 00:03:04,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:03:04,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331891418] [2020-10-06 00:03:04,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:03:04,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:04,816 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:04,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331891418] [2020-10-06 00:03:04,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812399162] [2020-10-06 00:03:04,817 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:03:04,872 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2020-10-06 00:03:04,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:03:04,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-06 00:03:04,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:03:04,896 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:04,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:03:04,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-10-06 00:03:04,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1500278556] [2020-10-06 00:03:04,897 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:03:04,899 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:03:04,907 INFO L258 McrAutomatonBuilder]: Finished intersection with 36 states and 42 transitions. [2020-10-06 00:03:04,907 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:03:04,918 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:04,918 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:04,947 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [35834#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-06 00:03:04,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-06 00:03:04,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:03:04,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-06 00:03:04,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2020-10-06 00:03:04,948 INFO L87 Difference]: Start difference. First operand 77 states and 190 transitions. Second operand 25 states. [2020-10-06 00:03:05,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:03:05,740 INFO L93 Difference]: Finished difference Result 123 states and 284 transitions. [2020-10-06 00:03:05,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 00:03:05,743 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28 [2020-10-06 00:03:05,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:03:05,744 INFO L225 Difference]: With dead ends: 123 [2020-10-06 00:03:05,744 INFO L226 Difference]: Without dead ends: 117 [2020-10-06 00:03:05,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=646, Invalid=1804, Unknown=0, NotChecked=0, Total=2450 [2020-10-06 00:03:05,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-06 00:03:05,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 79. [2020-10-06 00:03:05,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-06 00:03:05,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 196 transitions. [2020-10-06 00:03:05,746 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 196 transitions. Word has length 28 [2020-10-06 00:03:05,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:03:05,747 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 196 transitions. [2020-10-06 00:03:05,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-06 00:03:05,747 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 196 transitions. [2020-10-06 00:03:05,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-06 00:03:05,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:03:05,748 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:03:05,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-10-06 00:03:05,949 INFO L427 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:03:05,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:03:05,949 INFO L82 PathProgramCache]: Analyzing trace with hash 888962878, now seen corresponding path program 102 times [2020-10-06 00:03:05,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:03:05,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861428240] [2020-10-06 00:03:05,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:03:05,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:06,287 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:06,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861428240] [2020-10-06 00:03:06,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263926041] [2020-10-06 00:03:06,288 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:03:06,343 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-10-06 00:03:06,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:03:06,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-06 00:03:06,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:03:06,362 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:06,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:03:06,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-10-06 00:03:06,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1042605297] [2020-10-06 00:03:06,363 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:03:06,365 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:03:06,373 INFO L258 McrAutomatonBuilder]: Finished intersection with 36 states and 42 transitions. [2020-10-06 00:03:06,373 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:03:06,384 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:06,384 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:06,410 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [36271#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-06 00:03:06,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-06 00:03:06,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:03:06,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-06 00:03:06,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2020-10-06 00:03:06,411 INFO L87 Difference]: Start difference. First operand 79 states and 196 transitions. Second operand 25 states. [2020-10-06 00:03:07,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:03:07,283 INFO L93 Difference]: Finished difference Result 121 states and 282 transitions. [2020-10-06 00:03:07,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-06 00:03:07,284 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28 [2020-10-06 00:03:07,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:03:07,285 INFO L225 Difference]: With dead ends: 121 [2020-10-06 00:03:07,285 INFO L226 Difference]: Without dead ends: 115 [2020-10-06 00:03:07,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=676, Invalid=1976, Unknown=0, NotChecked=0, Total=2652 [2020-10-06 00:03:07,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-06 00:03:07,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 81. [2020-10-06 00:03:07,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-06 00:03:07,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 202 transitions. [2020-10-06 00:03:07,288 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 202 transitions. Word has length 28 [2020-10-06 00:03:07,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:03:07,288 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 202 transitions. [2020-10-06 00:03:07,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-06 00:03:07,288 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 202 transitions. [2020-10-06 00:03:07,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-06 00:03:07,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:03:07,289 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:03:07,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-10-06 00:03:07,499 INFO L427 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:03:07,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:03:07,499 INFO L82 PathProgramCache]: Analyzing trace with hash 130690848, now seen corresponding path program 103 times [2020-10-06 00:03:07,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:03:07,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294433345] [2020-10-06 00:03:07,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:03:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:07,829 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:07,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294433345] [2020-10-06 00:03:07,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984490675] [2020-10-06 00:03:07,830 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:03:07,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:07,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-06 00:03:07,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:03:07,935 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:07,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:03:07,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-10-06 00:03:07,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [871799691] [2020-10-06 00:03:07,936 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:03:07,938 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:03:07,947 INFO L258 McrAutomatonBuilder]: Finished intersection with 36 states and 42 transitions. [2020-10-06 00:03:07,947 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:03:07,963 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:07,964 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:08,007 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [36714#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-06 00:03:08,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-06 00:03:08,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:03:08,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-06 00:03:08,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2020-10-06 00:03:08,008 INFO L87 Difference]: Start difference. First operand 81 states and 202 transitions. Second operand 25 states. [2020-10-06 00:03:09,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:03:09,057 INFO L93 Difference]: Finished difference Result 119 states and 280 transitions. [2020-10-06 00:03:09,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-06 00:03:09,058 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28 [2020-10-06 00:03:09,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:03:09,059 INFO L225 Difference]: With dead ends: 119 [2020-10-06 00:03:09,059 INFO L226 Difference]: Without dead ends: 113 [2020-10-06 00:03:09,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=722, Invalid=2140, Unknown=0, NotChecked=0, Total=2862 [2020-10-06 00:03:09,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-06 00:03:09,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 83. [2020-10-06 00:03:09,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-06 00:03:09,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 208 transitions. [2020-10-06 00:03:09,063 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 208 transitions. Word has length 28 [2020-10-06 00:03:09,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:03:09,063 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 208 transitions. [2020-10-06 00:03:09,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-06 00:03:09,064 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 208 transitions. [2020-10-06 00:03:09,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-06 00:03:09,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:03:09,065 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:03:09,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:03:09,266 INFO L427 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:03:09,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:03:09,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1599705214, now seen corresponding path program 104 times [2020-10-06 00:03:09,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:03:09,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553800303] [2020-10-06 00:03:09,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:03:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:09,576 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:09,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553800303] [2020-10-06 00:03:09,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572171708] [2020-10-06 00:03:09,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:03:09,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:03:09,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:03:09,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-06 00:03:09,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:03:09,647 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:09,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:03:09,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-10-06 00:03:09,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [742759158] [2020-10-06 00:03:09,648 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:03:09,650 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:03:09,656 INFO L258 McrAutomatonBuilder]: Finished intersection with 36 states and 42 transitions. [2020-10-06 00:03:09,656 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:03:09,657 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:09,657 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:09,694 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [37163#(and (<= ~j~0 16) (< ~i~0 46))] [2020-10-06 00:03:09,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-06 00:03:09,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:03:09,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-06 00:03:09,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2020-10-06 00:03:09,696 INFO L87 Difference]: Start difference. First operand 83 states and 208 transitions. Second operand 25 states. [2020-10-06 00:03:10,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:03:10,773 INFO L93 Difference]: Finished difference Result 117 states and 278 transitions. [2020-10-06 00:03:10,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-06 00:03:10,774 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28 [2020-10-06 00:03:10,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:03:10,774 INFO L225 Difference]: With dead ends: 117 [2020-10-06 00:03:10,775 INFO L226 Difference]: Without dead ends: 111 [2020-10-06 00:03:10,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=784, Invalid=2296, Unknown=0, NotChecked=0, Total=3080 [2020-10-06 00:03:10,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-06 00:03:10,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 85. [2020-10-06 00:03:10,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-06 00:03:10,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 214 transitions. [2020-10-06 00:03:10,779 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 214 transitions. Word has length 28 [2020-10-06 00:03:10,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:03:10,779 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 214 transitions. [2020-10-06 00:03:10,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-06 00:03:10,779 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 214 transitions. [2020-10-06 00:03:10,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-06 00:03:10,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:03:10,779 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:03:10,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-10-06 00:03:10,980 INFO L427 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:03:10,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:03:10,981 INFO L82 PathProgramCache]: Analyzing trace with hash 2063294564, now seen corresponding path program 105 times [2020-10-06 00:03:10,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:03:10,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517130155] [2020-10-06 00:03:10,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:03:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:11,282 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:11,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517130155] [2020-10-06 00:03:11,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364122656] [2020-10-06 00:03:11,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:03:11,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-10-06 00:03:11,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:03:11,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-06 00:03:11,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:03:11,359 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:11,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:03:11,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-10-06 00:03:11,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [957063167] [2020-10-06 00:03:11,360 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:03:11,361 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:03:11,367 INFO L258 McrAutomatonBuilder]: Finished intersection with 36 states and 42 transitions. [2020-10-06 00:03:11,367 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:03:11,368 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:11,368 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:11,419 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [37618#(and (<= ~j~0 18) (< ~i~0 46))] [2020-10-06 00:03:11,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-06 00:03:11,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:03:11,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-06 00:03:11,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2020-10-06 00:03:11,420 INFO L87 Difference]: Start difference. First operand 85 states and 214 transitions. Second operand 25 states. [2020-10-06 00:03:12,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:03:12,607 INFO L93 Difference]: Finished difference Result 115 states and 276 transitions. [2020-10-06 00:03:12,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-06 00:03:12,607 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28 [2020-10-06 00:03:12,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:03:12,608 INFO L225 Difference]: With dead ends: 115 [2020-10-06 00:03:12,608 INFO L226 Difference]: Without dead ends: 109 [2020-10-06 00:03:12,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=862, Invalid=2444, Unknown=0, NotChecked=0, Total=3306 [2020-10-06 00:03:12,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-06 00:03:12,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 87. [2020-10-06 00:03:12,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-06 00:03:12,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 220 transitions. [2020-10-06 00:03:12,611 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 220 transitions. Word has length 28 [2020-10-06 00:03:12,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:03:12,611 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 220 transitions. [2020-10-06 00:03:12,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-06 00:03:12,611 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 220 transitions. [2020-10-06 00:03:12,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-06 00:03:12,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:03:12,611 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:03:12,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2020-10-06 00:03:12,812 INFO L427 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:03:12,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:03:12,813 INFO L82 PathProgramCache]: Analyzing trace with hash 641409478, now seen corresponding path program 106 times [2020-10-06 00:03:12,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:03:12,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392896544] [2020-10-06 00:03:12,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:03:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:13,105 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:13,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392896544] [2020-10-06 00:03:13,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034450900] [2020-10-06 00:03:13,106 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:03:13,157 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 00:03:13,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:03:13,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-06 00:03:13,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:03:13,184 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:13,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:03:13,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-10-06 00:03:13,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [859269040] [2020-10-06 00:03:13,185 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:03:13,187 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:03:13,194 INFO L258 McrAutomatonBuilder]: Finished intersection with 36 states and 42 transitions. [2020-10-06 00:03:13,194 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:03:13,205 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:13,205 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:13,235 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [38079#(and (<= ~j~0 20) (< ~i~0 46))] [2020-10-06 00:03:13,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-06 00:03:13,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:03:13,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-06 00:03:13,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2020-10-06 00:03:13,236 INFO L87 Difference]: Start difference. First operand 87 states and 220 transitions. Second operand 25 states. [2020-10-06 00:03:14,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:03:14,522 INFO L93 Difference]: Finished difference Result 113 states and 274 transitions. [2020-10-06 00:03:14,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-06 00:03:14,522 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28 [2020-10-06 00:03:14,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:03:14,523 INFO L225 Difference]: With dead ends: 113 [2020-10-06 00:03:14,523 INFO L226 Difference]: Without dead ends: 107 [2020-10-06 00:03:14,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=956, Invalid=2584, Unknown=0, NotChecked=0, Total=3540 [2020-10-06 00:03:14,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-06 00:03:14,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 89. [2020-10-06 00:03:14,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-06 00:03:14,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 226 transitions. [2020-10-06 00:03:14,525 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 226 transitions. Word has length 28 [2020-10-06 00:03:14,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:03:14,526 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 226 transitions. [2020-10-06 00:03:14,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-06 00:03:14,526 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 226 transitions. [2020-10-06 00:03:14,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-06 00:03:14,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:03:14,527 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:03:14,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2020-10-06 00:03:14,727 INFO L427 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:03:14,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:03:14,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1478503512, now seen corresponding path program 107 times [2020-10-06 00:03:14,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:03:14,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849831856] [2020-10-06 00:03:14,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:03:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:15,017 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:15,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849831856] [2020-10-06 00:03:15,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855853613] [2020-10-06 00:03:15,018 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:03:15,073 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2020-10-06 00:03:15,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:03:15,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-06 00:03:15,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:03:15,097 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:15,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:03:15,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-10-06 00:03:15,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1641562383] [2020-10-06 00:03:15,098 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:03:15,100 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:03:15,105 INFO L258 McrAutomatonBuilder]: Finished intersection with 36 states and 42 transitions. [2020-10-06 00:03:15,106 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:03:15,107 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:15,107 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:15,143 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [38546#(and (<= ~j~0 22) (< ~i~0 46))] [2020-10-06 00:03:15,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-06 00:03:15,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:03:15,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-06 00:03:15,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2020-10-06 00:03:15,145 INFO L87 Difference]: Start difference. First operand 89 states and 226 transitions. Second operand 25 states. [2020-10-06 00:03:16,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:03:16,527 INFO L93 Difference]: Finished difference Result 111 states and 272 transitions. [2020-10-06 00:03:16,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-06 00:03:16,527 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28 [2020-10-06 00:03:16,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:03:16,528 INFO L225 Difference]: With dead ends: 111 [2020-10-06 00:03:16,528 INFO L226 Difference]: Without dead ends: 105 [2020-10-06 00:03:16,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1066, Invalid=2716, Unknown=0, NotChecked=0, Total=3782 [2020-10-06 00:03:16,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-06 00:03:16,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 91. [2020-10-06 00:03:16,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-06 00:03:16,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 232 transitions. [2020-10-06 00:03:16,532 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 232 transitions. Word has length 28 [2020-10-06 00:03:16,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:03:16,532 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 232 transitions. [2020-10-06 00:03:16,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-06 00:03:16,532 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 232 transitions. [2020-10-06 00:03:16,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-06 00:03:16,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:03:16,533 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:03:16,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:03:16,739 INFO L427 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:03:16,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:03:16,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1567331850, now seen corresponding path program 108 times [2020-10-06 00:03:16,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:03:16,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996752382] [2020-10-06 00:03:16,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:03:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:17,023 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:17,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996752382] [2020-10-06 00:03:17,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548432804] [2020-10-06 00:03:17,024 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:03:17,079 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-10-06 00:03:17,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:03:17,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-06 00:03:17,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:03:17,107 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:17,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:03:17,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-10-06 00:03:17,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2028162883] [2020-10-06 00:03:17,108 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:03:17,110 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:03:17,119 INFO L258 McrAutomatonBuilder]: Finished intersection with 36 states and 42 transitions. [2020-10-06 00:03:17,119 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:03:17,134 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:17,135 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:17,160 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [39019#(and (<= ~j~0 24) (< ~i~0 46))] [2020-10-06 00:03:17,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-06 00:03:17,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:03:17,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-06 00:03:17,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2020-10-06 00:03:17,161 INFO L87 Difference]: Start difference. First operand 91 states and 232 transitions. Second operand 25 states. [2020-10-06 00:03:18,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:03:18,609 INFO L93 Difference]: Finished difference Result 111 states and 275 transitions. [2020-10-06 00:03:18,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-06 00:03:18,610 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28 [2020-10-06 00:03:18,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:03:18,610 INFO L225 Difference]: With dead ends: 111 [2020-10-06 00:03:18,610 INFO L226 Difference]: Without dead ends: 105 [2020-10-06 00:03:18,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1192, Invalid=2840, Unknown=0, NotChecked=0, Total=4032 [2020-10-06 00:03:18,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-06 00:03:18,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 93. [2020-10-06 00:03:18,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-06 00:03:18,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 240 transitions. [2020-10-06 00:03:18,614 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 240 transitions. Word has length 28 [2020-10-06 00:03:18,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:03:18,615 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 240 transitions. [2020-10-06 00:03:18,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-06 00:03:18,615 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 240 transitions. [2020-10-06 00:03:18,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-06 00:03:18,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:03:18,615 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:03:18,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,108 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:03:18,824 INFO L427 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:03:18,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:03:18,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1583909100, now seen corresponding path program 109 times [2020-10-06 00:03:18,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:03:18,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720522331] [2020-10-06 00:03:18,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:03:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:19,113 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:19,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720522331] [2020-10-06 00:03:19,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551720020] [2020-10-06 00:03:19,113 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:03:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:19,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-06 00:03:19,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:03:19,207 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:19,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:03:19,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-10-06 00:03:19,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [898209532] [2020-10-06 00:03:19,208 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:03:19,210 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:03:19,215 INFO L258 McrAutomatonBuilder]: Finished intersection with 36 states and 42 transitions. [2020-10-06 00:03:19,216 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:03:19,216 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:19,216 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:19,255 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [39500#(and (<= ~j~0 26) (< ~i~0 46))] [2020-10-06 00:03:19,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-06 00:03:19,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:03:19,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-06 00:03:19,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2020-10-06 00:03:19,255 INFO L87 Difference]: Start difference. First operand 93 states and 240 transitions. Second operand 25 states. [2020-10-06 00:03:20,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:03:20,780 INFO L93 Difference]: Finished difference Result 111 states and 283 transitions. [2020-10-06 00:03:20,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-06 00:03:20,781 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28 [2020-10-06 00:03:20,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:03:20,781 INFO L225 Difference]: With dead ends: 111 [2020-10-06 00:03:20,782 INFO L226 Difference]: Without dead ends: 99 [2020-10-06 00:03:20,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1146 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1332, Invalid=2958, Unknown=0, NotChecked=0, Total=4290 [2020-10-06 00:03:20,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-06 00:03:20,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 70. [2020-10-06 00:03:20,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-06 00:03:20,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 172 transitions. [2020-10-06 00:03:20,784 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 172 transitions. Word has length 28 [2020-10-06 00:03:20,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:03:20,785 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 172 transitions. [2020-10-06 00:03:20,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-06 00:03:20,785 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 172 transitions. [2020-10-06 00:03:20,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-06 00:03:20,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:03:20,785 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:03:20,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:03:20,987 INFO L427 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:03:20,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:03:20,988 INFO L82 PathProgramCache]: Analyzing trace with hash 65865102, now seen corresponding path program 110 times [2020-10-06 00:03:20,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:03:20,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507827542] [2020-10-06 00:03:20,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:03:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:21,444 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:21,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507827542] [2020-10-06 00:03:21,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164741606] [2020-10-06 00:03:21,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:03:21,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:03:21,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:03:21,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-06 00:03:21,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:03:21,520 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:21,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:03:21,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-10-06 00:03:21,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [634344598] [2020-10-06 00:03:21,521 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:03:21,523 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:03:21,532 INFO L258 McrAutomatonBuilder]: Finished intersection with 39 states and 49 transitions. [2020-10-06 00:03:21,533 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:03:21,534 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:21,534 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:21,568 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:21,568 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:21,596 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:21,596 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:21,607 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:21,608 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:21,614 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [39943#(and (<= ~j~0 4) (< ~i~0 46))] [2020-10-06 00:03:21,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-06 00:03:21,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:03:21,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-06 00:03:21,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2020-10-06 00:03:21,616 INFO L87 Difference]: Start difference. First operand 70 states and 172 transitions. Second operand 26 states. [2020-10-06 00:03:22,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:03:22,413 INFO L93 Difference]: Finished difference Result 108 states and 252 transitions. [2020-10-06 00:03:22,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 00:03:22,414 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 29 [2020-10-06 00:03:22,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:03:22,415 INFO L225 Difference]: With dead ends: 108 [2020-10-06 00:03:22,415 INFO L226 Difference]: Without dead ends: 102 [2020-10-06 00:03:22,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=688, Invalid=1664, Unknown=0, NotChecked=0, Total=2352 [2020-10-06 00:03:22,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-06 00:03:22,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 78. [2020-10-06 00:03:22,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-06 00:03:22,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 192 transitions. [2020-10-06 00:03:22,418 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 192 transitions. Word has length 29 [2020-10-06 00:03:22,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:03:22,418 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 192 transitions. [2020-10-06 00:03:22,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-06 00:03:22,418 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 192 transitions. [2020-10-06 00:03:22,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-06 00:03:22,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:03:22,418 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:03:22,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2020-10-06 00:03:22,619 INFO L427 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:03:22,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:03:22,620 INFO L82 PathProgramCache]: Analyzing trace with hash -558119952, now seen corresponding path program 111 times [2020-10-06 00:03:22,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:03:22,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324441708] [2020-10-06 00:03:22,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:03:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:23,019 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:23,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324441708] [2020-10-06 00:03:23,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710215366] [2020-10-06 00:03:23,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:03:23,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-10-06 00:03:23,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:03:23,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-06 00:03:23,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:03:23,090 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:23,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:03:23,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-10-06 00:03:23,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1139905566] [2020-10-06 00:03:23,091 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:03:23,093 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:03:23,099 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 39 transitions. [2020-10-06 00:03:23,099 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:03:23,103 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:23,103 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:23,139 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [40363#(and (<= ~j~0 6) (< ~i~0 46))] [2020-10-06 00:03:23,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-06 00:03:23,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:03:23,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-06 00:03:23,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2020-10-06 00:03:23,140 INFO L87 Difference]: Start difference. First operand 78 states and 192 transitions. Second operand 26 states. [2020-10-06 00:03:24,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:03:24,018 INFO L93 Difference]: Finished difference Result 152 states and 342 transitions. [2020-10-06 00:03:24,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-06 00:03:24,019 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 29 [2020-10-06 00:03:24,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:03:24,020 INFO L225 Difference]: With dead ends: 152 [2020-10-06 00:03:24,020 INFO L226 Difference]: Without dead ends: 146 [2020-10-06 00:03:24,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=749, Invalid=2007, Unknown=0, NotChecked=0, Total=2756 [2020-10-06 00:03:24,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-06 00:03:24,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 80. [2020-10-06 00:03:24,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-06 00:03:24,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 198 transitions. [2020-10-06 00:03:24,023 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 198 transitions. Word has length 29 [2020-10-06 00:03:24,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:03:24,023 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 198 transitions. [2020-10-06 00:03:24,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-06 00:03:24,023 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 198 transitions. [2020-10-06 00:03:24,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-06 00:03:24,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:03:24,023 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:03:24,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2020-10-06 00:03:24,224 INFO L427 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:03:24,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:03:24,225 INFO L82 PathProgramCache]: Analyzing trace with hash 831173330, now seen corresponding path program 112 times [2020-10-06 00:03:24,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:03:24,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492973517] [2020-10-06 00:03:24,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:03:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:24,604 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:24,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492973517] [2020-10-06 00:03:24,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089804378] [2020-10-06 00:03:24,605 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:03:24,655 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 00:03:24,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:03:24,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-06 00:03:24,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:03:24,673 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:24,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:03:24,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-10-06 00:03:24,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [120157895] [2020-10-06 00:03:24,674 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:03:24,676 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:03:24,685 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 39 transitions. [2020-10-06 00:03:24,685 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:03:24,691 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:24,691 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:24,731 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [40839#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-06 00:03:24,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-06 00:03:24,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:03:24,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-06 00:03:24,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2020-10-06 00:03:24,732 INFO L87 Difference]: Start difference. First operand 80 states and 198 transitions. Second operand 26 states. [2020-10-06 00:03:25,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:03:25,804 INFO L93 Difference]: Finished difference Result 149 states and 338 transitions. [2020-10-06 00:03:25,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-06 00:03:25,804 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 29 [2020-10-06 00:03:25,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:03:25,805 INFO L225 Difference]: With dead ends: 149 [2020-10-06 00:03:25,805 INFO L226 Difference]: Without dead ends: 143 [2020-10-06 00:03:25,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=776, Invalid=2194, Unknown=0, NotChecked=0, Total=2970 [2020-10-06 00:03:25,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-06 00:03:25,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 82. [2020-10-06 00:03:25,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-06 00:03:25,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 204 transitions. [2020-10-06 00:03:25,809 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 204 transitions. Word has length 29 [2020-10-06 00:03:25,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:03:25,809 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 204 transitions. [2020-10-06 00:03:25,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-06 00:03:25,809 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 204 transitions. [2020-10-06 00:03:25,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-06 00:03:25,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:03:25,810 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:03:26,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2020-10-06 00:03:26,015 INFO L427 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:03:26,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:03:26,015 INFO L82 PathProgramCache]: Analyzing trace with hash -2018774476, now seen corresponding path program 113 times [2020-10-06 00:03:26,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:03:26,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379025410] [2020-10-06 00:03:26,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:03:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:26,377 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:26,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379025410] [2020-10-06 00:03:26,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430408498] [2020-10-06 00:03:26,378 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:03:26,429 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-10-06 00:03:26,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:03:26,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-06 00:03:26,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:03:26,447 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:26,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:03:26,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-10-06 00:03:26,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1327040993] [2020-10-06 00:03:26,448 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:03:26,450 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:03:26,457 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 39 transitions. [2020-10-06 00:03:26,458 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:03:26,465 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:26,465 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:26,501 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [41320#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-06 00:03:26,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-06 00:03:26,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:03:26,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-06 00:03:26,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2020-10-06 00:03:26,502 INFO L87 Difference]: Start difference. First operand 82 states and 204 transitions. Second operand 26 states. [2020-10-06 00:03:27,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:03:27,557 INFO L93 Difference]: Finished difference Result 147 states and 336 transitions. [2020-10-06 00:03:27,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-06 00:03:27,558 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 29 [2020-10-06 00:03:27,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:03:27,558 INFO L225 Difference]: With dead ends: 147 [2020-10-06 00:03:27,559 INFO L226 Difference]: Without dead ends: 141 [2020-10-06 00:03:27,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=819, Invalid=2373, Unknown=0, NotChecked=0, Total=3192 [2020-10-06 00:03:27,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-06 00:03:27,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 84. [2020-10-06 00:03:27,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-06 00:03:27,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 210 transitions. [2020-10-06 00:03:27,563 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 210 transitions. Word has length 29 [2020-10-06 00:03:27,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:03:27,563 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 210 transitions. [2020-10-06 00:03:27,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-06 00:03:27,563 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 210 transitions. [2020-10-06 00:03:27,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-06 00:03:27,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:03:27,564 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:03:27,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2020-10-06 00:03:27,773 INFO L427 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:03:27,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:03:27,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1517920790, now seen corresponding path program 114 times [2020-10-06 00:03:27,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:03:27,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868544404] [2020-10-06 00:03:27,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:03:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:28,101 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:28,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868544404] [2020-10-06 00:03:28,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546154367] [2020-10-06 00:03:28,102 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:03:28,166 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-10-06 00:03:28,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:03:28,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-06 00:03:28,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:03:28,185 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:28,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:03:28,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-10-06 00:03:28,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [805597486] [2020-10-06 00:03:28,186 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:03:28,188 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:03:28,194 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 39 transitions. [2020-10-06 00:03:28,194 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:03:28,200 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:28,200 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:28,235 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [41807#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-06 00:03:28,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-06 00:03:28,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:03:28,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-06 00:03:28,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2020-10-06 00:03:28,236 INFO L87 Difference]: Start difference. First operand 84 states and 210 transitions. Second operand 26 states. [2020-10-06 00:03:29,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:03:29,396 INFO L93 Difference]: Finished difference Result 145 states and 334 transitions. [2020-10-06 00:03:29,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-06 00:03:29,397 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 29 [2020-10-06 00:03:29,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:03:29,397 INFO L225 Difference]: With dead ends: 145 [2020-10-06 00:03:29,397 INFO L226 Difference]: Without dead ends: 139 [2020-10-06 00:03:29,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=878, Invalid=2544, Unknown=0, NotChecked=0, Total=3422 [2020-10-06 00:03:29,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-06 00:03:29,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2020-10-06 00:03:29,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-06 00:03:29,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 216 transitions. [2020-10-06 00:03:29,400 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 216 transitions. Word has length 29 [2020-10-06 00:03:29,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:03:29,400 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 216 transitions. [2020-10-06 00:03:29,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-06 00:03:29,401 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 216 transitions. [2020-10-06 00:03:29,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-06 00:03:29,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:03:29,401 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:03:29,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2020-10-06 00:03:29,602 INFO L427 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:03:29,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:03:29,602 INFO L82 PathProgramCache]: Analyzing trace with hash -212475272, now seen corresponding path program 115 times [2020-10-06 00:03:29,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:03:29,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161972962] [2020-10-06 00:03:29,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:03:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:29,941 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:29,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161972962] [2020-10-06 00:03:29,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804120215] [2020-10-06 00:03:29,942 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:03:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:29,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-06 00:03:29,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:03:30,013 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:30,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:03:30,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-10-06 00:03:30,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [678691087] [2020-10-06 00:03:30,014 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:03:30,016 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:03:30,022 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 39 transitions. [2020-10-06 00:03:30,022 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:03:30,027 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:30,028 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:30,062 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [42300#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-06 00:03:30,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-06 00:03:30,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:03:30,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-06 00:03:30,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2020-10-06 00:03:30,062 INFO L87 Difference]: Start difference. First operand 86 states and 216 transitions. Second operand 26 states. [2020-10-06 00:03:31,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:03:31,305 INFO L93 Difference]: Finished difference Result 143 states and 332 transitions. [2020-10-06 00:03:31,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-06 00:03:31,306 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 29 [2020-10-06 00:03:31,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:03:31,306 INFO L225 Difference]: With dead ends: 143 [2020-10-06 00:03:31,306 INFO L226 Difference]: Without dead ends: 137 [2020-10-06 00:03:31,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=953, Invalid=2707, Unknown=0, NotChecked=0, Total=3660 [2020-10-06 00:03:31,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-06 00:03:31,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 88. [2020-10-06 00:03:31,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-06 00:03:31,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 222 transitions. [2020-10-06 00:03:31,310 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 222 transitions. Word has length 29 [2020-10-06 00:03:31,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:03:31,310 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 222 transitions. [2020-10-06 00:03:31,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-06 00:03:31,310 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 222 transitions. [2020-10-06 00:03:31,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-06 00:03:31,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:03:31,311 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:03:31,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:03:31,516 INFO L427 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:03:31,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:03:31,516 INFO L82 PathProgramCache]: Analyzing trace with hash -844442790, now seen corresponding path program 116 times [2020-10-06 00:03:31,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:03:31,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220056386] [2020-10-06 00:03:31,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:03:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:31,844 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:31,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220056386] [2020-10-06 00:03:31,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383845519] [2020-10-06 00:03:31,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:03:31,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:03:31,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:03:31,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-06 00:03:31,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:03:31,925 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:31,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:03:31,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-10-06 00:03:31,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1145065970] [2020-10-06 00:03:31,926 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:03:31,928 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:03:31,934 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 39 transitions. [2020-10-06 00:03:31,934 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:03:31,938 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:31,938 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:31,974 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [42799#(and (<= ~j~0 16) (< ~i~0 46))] [2020-10-06 00:03:31,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-06 00:03:31,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:03:31,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-06 00:03:31,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2020-10-06 00:03:31,976 INFO L87 Difference]: Start difference. First operand 88 states and 222 transitions. Second operand 26 states. [2020-10-06 00:03:33,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:03:33,312 INFO L93 Difference]: Finished difference Result 141 states and 330 transitions. [2020-10-06 00:03:33,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-06 00:03:33,312 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 29 [2020-10-06 00:03:33,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:03:33,313 INFO L225 Difference]: With dead ends: 141 [2020-10-06 00:03:33,313 INFO L226 Difference]: Without dead ends: 135 [2020-10-06 00:03:33,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1044, Invalid=2862, Unknown=0, NotChecked=0, Total=3906 [2020-10-06 00:03:33,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-06 00:03:33,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 90. [2020-10-06 00:03:33,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-06 00:03:33,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 228 transitions. [2020-10-06 00:03:33,316 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 228 transitions. Word has length 29 [2020-10-06 00:03:33,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:03:33,316 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 228 transitions. [2020-10-06 00:03:33,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-06 00:03:33,316 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 228 transitions. [2020-10-06 00:03:33,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-06 00:03:33,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:03:33,317 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:03:33,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2020-10-06 00:03:33,518 INFO L427 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:03:33,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:03:33,518 INFO L82 PathProgramCache]: Analyzing trace with hash 2028639420, now seen corresponding path program 117 times [2020-10-06 00:03:33,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:03:33,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335587283] [2020-10-06 00:03:33,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:03:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:33,840 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:33,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335587283] [2020-10-06 00:03:33,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396500451] [2020-10-06 00:03:33,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:03:33,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-10-06 00:03:33,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:03:33,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-06 00:03:33,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:03:33,922 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:33,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:03:33,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-10-06 00:03:33,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1538208626] [2020-10-06 00:03:33,923 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:03:33,925 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:03:33,931 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 39 transitions. [2020-10-06 00:03:33,931 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:03:33,933 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:33,933 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:33,973 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [43304#(and (<= ~j~0 18) (< ~i~0 46))] [2020-10-06 00:03:33,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-06 00:03:33,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:03:33,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-06 00:03:33,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2020-10-06 00:03:33,974 INFO L87 Difference]: Start difference. First operand 90 states and 228 transitions. Second operand 26 states. [2020-10-06 00:03:35,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:03:35,398 INFO L93 Difference]: Finished difference Result 139 states and 328 transitions. [2020-10-06 00:03:35,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-06 00:03:35,399 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 29 [2020-10-06 00:03:35,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:03:35,400 INFO L225 Difference]: With dead ends: 139 [2020-10-06 00:03:35,400 INFO L226 Difference]: Without dead ends: 133 [2020-10-06 00:03:35,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1113 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1151, Invalid=3009, Unknown=0, NotChecked=0, Total=4160 [2020-10-06 00:03:35,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-06 00:03:35,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 92. [2020-10-06 00:03:35,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-06 00:03:35,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 234 transitions. [2020-10-06 00:03:35,403 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 234 transitions. Word has length 29 [2020-10-06 00:03:35,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:03:35,403 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 234 transitions. [2020-10-06 00:03:35,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-06 00:03:35,404 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 234 transitions. [2020-10-06 00:03:35,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-06 00:03:35,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:03:35,404 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:03:35,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:03:35,605 INFO L427 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:03:35,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:03:35,605 INFO L82 PathProgramCache]: Analyzing trace with hash -91273570, now seen corresponding path program 118 times [2020-10-06 00:03:35,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:03:35,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065656493] [2020-10-06 00:03:35,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:03:35,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:35,928 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:35,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065656493] [2020-10-06 00:03:35,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793174661] [2020-10-06 00:03:35,929 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:03:35,981 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 00:03:35,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:03:35,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-06 00:03:35,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:03:36,020 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:36,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:03:36,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-10-06 00:03:36,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [379734035] [2020-10-06 00:03:36,021 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:03:36,023 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:03:36,030 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 39 transitions. [2020-10-06 00:03:36,030 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:03:36,038 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:36,038 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:36,077 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [43815#(and (<= ~j~0 20) (< ~i~0 46))] [2020-10-06 00:03:36,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-06 00:03:36,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:03:36,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-06 00:03:36,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2020-10-06 00:03:36,078 INFO L87 Difference]: Start difference. First operand 92 states and 234 transitions. Second operand 26 states. [2020-10-06 00:03:37,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:03:37,578 INFO L93 Difference]: Finished difference Result 137 states and 326 transitions. [2020-10-06 00:03:37,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-06 00:03:37,578 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 29 [2020-10-06 00:03:37,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:03:37,579 INFO L225 Difference]: With dead ends: 137 [2020-10-06 00:03:37,579 INFO L226 Difference]: Without dead ends: 131 [2020-10-06 00:03:37,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1274, Invalid=3148, Unknown=0, NotChecked=0, Total=4422 [2020-10-06 00:03:37,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-06 00:03:37,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 94. [2020-10-06 00:03:37,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-06 00:03:37,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 240 transitions. [2020-10-06 00:03:37,581 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 240 transitions. Word has length 29 [2020-10-06 00:03:37,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:03:37,581 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 240 transitions. [2020-10-06 00:03:37,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-06 00:03:37,582 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 240 transitions. [2020-10-06 00:03:37,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-06 00:03:37,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:03:37,582 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:03:37,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,118 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:03:37,783 INFO L427 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:03:37,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:03:37,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1340405504, now seen corresponding path program 119 times [2020-10-06 00:03:37,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:03:37,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830017785] [2020-10-06 00:03:37,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:03:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:38,104 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:38,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830017785] [2020-10-06 00:03:38,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807598719] [2020-10-06 00:03:38,105 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:03:38,158 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-10-06 00:03:38,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:03:38,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-06 00:03:38,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:03:38,197 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:38,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:03:38,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-10-06 00:03:38,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [735405256] [2020-10-06 00:03:38,198 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:03:38,200 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:03:38,206 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 39 transitions. [2020-10-06 00:03:38,207 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:03:38,214 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:38,214 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:38,245 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [44332#(and (<= ~j~0 22) (< ~i~0 46))] [2020-10-06 00:03:38,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-06 00:03:38,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:03:38,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-06 00:03:38,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2020-10-06 00:03:38,246 INFO L87 Difference]: Start difference. First operand 94 states and 240 transitions. Second operand 26 states. [2020-10-06 00:03:39,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:03:39,858 INFO L93 Difference]: Finished difference Result 137 states and 329 transitions. [2020-10-06 00:03:39,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-06 00:03:39,858 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 29 [2020-10-06 00:03:39,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:03:39,859 INFO L225 Difference]: With dead ends: 137 [2020-10-06 00:03:39,859 INFO L226 Difference]: Without dead ends: 131 [2020-10-06 00:03:39,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1333 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1413, Invalid=3279, Unknown=0, NotChecked=0, Total=4692 [2020-10-06 00:03:39,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-06 00:03:39,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 96. [2020-10-06 00:03:39,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-06 00:03:39,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 248 transitions. [2020-10-06 00:03:39,862 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 248 transitions. Word has length 29 [2020-10-06 00:03:39,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:03:39,862 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 248 transitions. [2020-10-06 00:03:39,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-06 00:03:39,862 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 248 transitions. [2020-10-06 00:03:39,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-06 00:03:39,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:03:39,863 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:03:40,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable120 [2020-10-06 00:03:40,064 INFO L427 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:03:40,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:03:40,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1323828254, now seen corresponding path program 120 times [2020-10-06 00:03:40,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:03:40,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530851922] [2020-10-06 00:03:40,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:03:40,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:40,385 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:40,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530851922] [2020-10-06 00:03:40,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799336154] [2020-10-06 00:03:40,386 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:03:40,443 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-10-06 00:03:40,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:03:40,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-06 00:03:40,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:03:40,472 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:40,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:03:40,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-10-06 00:03:40,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [758729185] [2020-10-06 00:03:40,473 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:03:40,476 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:03:40,484 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 39 transitions. [2020-10-06 00:03:40,484 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:03:40,489 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:40,489 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:40,523 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [44857#(and (<= ~j~0 24) (< ~i~0 46))] [2020-10-06 00:03:40,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-06 00:03:40,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:03:40,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-06 00:03:40,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2020-10-06 00:03:40,524 INFO L87 Difference]: Start difference. First operand 96 states and 248 transitions. Second operand 26 states. [2020-10-06 00:03:42,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:03:42,203 INFO L93 Difference]: Finished difference Result 138 states and 339 transitions. [2020-10-06 00:03:42,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-06 00:03:42,204 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 29 [2020-10-06 00:03:42,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:03:42,205 INFO L225 Difference]: With dead ends: 138 [2020-10-06 00:03:42,205 INFO L226 Difference]: Without dead ends: 126 [2020-10-06 00:03:42,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1449 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1566, Invalid=3404, Unknown=0, NotChecked=0, Total=4970 [2020-10-06 00:03:42,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-06 00:03:42,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 74. [2020-10-06 00:03:42,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-06 00:03:42,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 181 transitions. [2020-10-06 00:03:42,207 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 181 transitions. Word has length 29 [2020-10-06 00:03:42,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:03:42,207 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 181 transitions. [2020-10-06 00:03:42,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-06 00:03:42,208 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 181 transitions. [2020-10-06 00:03:42,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-06 00:03:42,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:03:42,208 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:03:42,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,120 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:03:42,409 INFO L427 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:03:42,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:03:42,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1170458439, now seen corresponding path program 121 times [2020-10-06 00:03:42,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:03:42,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361727278] [2020-10-06 00:03:42,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:03:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:42,853 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:42,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361727278] [2020-10-06 00:03:42,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534093273] [2020-10-06 00:03:42,854 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:03:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:42,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-06 00:03:42,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:03:42,926 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:42,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:03:42,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2020-10-06 00:03:42,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [965020808] [2020-10-06 00:03:42,927 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:03:42,929 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:03:42,935 INFO L258 McrAutomatonBuilder]: Finished intersection with 39 states and 46 transitions. [2020-10-06 00:03:42,936 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:03:42,947 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:42,947 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:42,982 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [45347#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-06 00:03:42,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-06 00:03:42,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:03:42,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-06 00:03:42,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2020-10-06 00:03:42,983 INFO L87 Difference]: Start difference. First operand 74 states and 181 transitions. Second operand 27 states. [2020-10-06 00:03:43,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:03:43,829 INFO L93 Difference]: Finished difference Result 134 states and 306 transitions. [2020-10-06 00:03:43,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 00:03:43,830 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 30 [2020-10-06 00:03:43,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:03:43,831 INFO L225 Difference]: With dead ends: 134 [2020-10-06 00:03:43,831 INFO L226 Difference]: Without dead ends: 128 [2020-10-06 00:03:43,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=747, Invalid=1905, Unknown=0, NotChecked=0, Total=2652 [2020-10-06 00:03:43,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-06 00:03:43,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 81. [2020-10-06 00:03:43,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-06 00:03:43,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 200 transitions. [2020-10-06 00:03:43,835 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 200 transitions. Word has length 30 [2020-10-06 00:03:43,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:03:43,836 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 200 transitions. [2020-10-06 00:03:43,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-06 00:03:43,837 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 200 transitions. [2020-10-06 00:03:43,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-06 00:03:43,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:03:43,837 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:03:44,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122,121 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:03:44,047 INFO L427 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:03:44,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:03:44,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1794443493, now seen corresponding path program 122 times [2020-10-06 00:03:44,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:03:44,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700103311] [2020-10-06 00:03:44,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:03:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:44,486 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:44,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700103311] [2020-10-06 00:03:44,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751276222] [2020-10-06 00:03:44,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:03:44,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:03:44,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:03:44,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-06 00:03:44,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:03:44,561 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:44,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:03:44,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2020-10-06 00:03:44,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [989590816] [2020-10-06 00:03:44,562 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:03:44,564 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:03:44,571 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 44 transitions. [2020-10-06 00:03:44,572 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:03:44,582 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:44,582 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:44,616 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [45807#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-06 00:03:44,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-06 00:03:44,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:03:44,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-06 00:03:44,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2020-10-06 00:03:44,618 INFO L87 Difference]: Start difference. First operand 81 states and 200 transitions. Second operand 27 states. [2020-10-06 00:03:45,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:03:45,593 INFO L93 Difference]: Finished difference Result 131 states and 302 transitions. [2020-10-06 00:03:45,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-06 00:03:45,594 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 30 [2020-10-06 00:03:45,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:03:45,595 INFO L225 Difference]: With dead ends: 131 [2020-10-06 00:03:45,595 INFO L226 Difference]: Without dead ends: 125 [2020-10-06 00:03:45,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=759, Invalid=2103, Unknown=0, NotChecked=0, Total=2862 [2020-10-06 00:03:45,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-06 00:03:45,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 83. [2020-10-06 00:03:45,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-06 00:03:45,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 206 transitions. [2020-10-06 00:03:45,598 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 206 transitions. Word has length 30 [2020-10-06 00:03:45,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:03:45,598 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 206 transitions. [2020-10-06 00:03:45,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-06 00:03:45,598 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 206 transitions. [2020-10-06 00:03:45,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-06 00:03:45,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:03:45,599 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:03:45,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2020-10-06 00:03:45,802 INFO L427 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:03:45,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:03:45,802 INFO L82 PathProgramCache]: Analyzing trace with hash -405150211, now seen corresponding path program 123 times [2020-10-06 00:03:45,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:03:45,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915052406] [2020-10-06 00:03:45,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:03:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:46,223 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:46,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915052406] [2020-10-06 00:03:46,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815004735] [2020-10-06 00:03:46,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:03:46,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-10-06 00:03:46,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:03:46,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-06 00:03:46,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:03:46,295 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:46,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:03:46,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2020-10-06 00:03:46,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1073109970] [2020-10-06 00:03:46,295 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:03:46,297 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:03:46,304 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 44 transitions. [2020-10-06 00:03:46,304 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:03:46,311 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:46,312 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:46,349 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [46272#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-06 00:03:46,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-06 00:03:46,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:03:46,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-06 00:03:46,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2020-10-06 00:03:46,350 INFO L87 Difference]: Start difference. First operand 83 states and 206 transitions. Second operand 27 states. [2020-10-06 00:03:47,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:03:47,401 INFO L93 Difference]: Finished difference Result 129 states and 300 transitions. [2020-10-06 00:03:47,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-06 00:03:47,402 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 30 [2020-10-06 00:03:47,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:03:47,403 INFO L225 Difference]: With dead ends: 129 [2020-10-06 00:03:47,403 INFO L226 Difference]: Without dead ends: 123 [2020-10-06 00:03:47,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=787, Invalid=2293, Unknown=0, NotChecked=0, Total=3080 [2020-10-06 00:03:47,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-06 00:03:47,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 85. [2020-10-06 00:03:47,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-06 00:03:47,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 212 transitions. [2020-10-06 00:03:47,406 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 212 transitions. Word has length 30 [2020-10-06 00:03:47,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:03:47,406 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 212 transitions. [2020-10-06 00:03:47,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-06 00:03:47,406 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 212 transitions. [2020-10-06 00:03:47,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-06 00:03:47,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:03:47,407 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:03:47,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:03:47,614 INFO L427 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:03:47,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:03:47,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1039869279, now seen corresponding path program 124 times [2020-10-06 00:03:47,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:03:47,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120336353] [2020-10-06 00:03:47,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:03:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:48,009 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:48,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120336353] [2020-10-06 00:03:48,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430714825] [2020-10-06 00:03:48,010 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:03:48,063 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 00:03:48,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:03:48,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-06 00:03:48,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:03:48,091 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:48,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:03:48,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2020-10-06 00:03:48,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [599906133] [2020-10-06 00:03:48,092 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:03:48,093 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:03:48,099 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 44 transitions. [2020-10-06 00:03:48,099 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:03:48,107 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:48,108 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:48,142 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [46743#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-06 00:03:48,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-06 00:03:48,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:03:48,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-06 00:03:48,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2020-10-06 00:03:48,143 INFO L87 Difference]: Start difference. First operand 85 states and 212 transitions. Second operand 27 states. [2020-10-06 00:03:49,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:03:49,290 INFO L93 Difference]: Finished difference Result 127 states and 298 transitions. [2020-10-06 00:03:49,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-06 00:03:49,291 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 30 [2020-10-06 00:03:49,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:03:49,291 INFO L225 Difference]: With dead ends: 127 [2020-10-06 00:03:49,291 INFO L226 Difference]: Without dead ends: 121 [2020-10-06 00:03:49,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=831, Invalid=2475, Unknown=0, NotChecked=0, Total=3306 [2020-10-06 00:03:49,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-06 00:03:49,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 87. [2020-10-06 00:03:49,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-06 00:03:49,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 218 transitions. [2020-10-06 00:03:49,295 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 218 transitions. Word has length 30 [2020-10-06 00:03:49,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:03:49,295 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 218 transitions. [2020-10-06 00:03:49,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-06 00:03:49,295 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 218 transitions. [2020-10-06 00:03:49,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-06 00:03:49,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:03:49,296 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:03:49,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-10-06 00:03:49,496 INFO L427 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:03:49,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:03:49,497 INFO L82 PathProgramCache]: Analyzing trace with hash 281597249, now seen corresponding path program 125 times [2020-10-06 00:03:49,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:03:49,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985022837] [2020-10-06 00:03:49,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:03:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:49,886 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:49,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985022837] [2020-10-06 00:03:49,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221044583] [2020-10-06 00:03:49,887 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:03:49,940 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-10-06 00:03:49,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:03:49,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-06 00:03:49,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:03:49,962 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:49,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:03:49,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2020-10-06 00:03:49,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1915501148] [2020-10-06 00:03:49,966 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:03:49,968 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:03:49,976 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 44 transitions. [2020-10-06 00:03:49,976 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:03:49,986 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:49,987 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:50,023 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [47220#(and (<= ~j~0 16) (< ~i~0 46))] [2020-10-06 00:03:50,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-06 00:03:50,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:03:50,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-06 00:03:50,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2020-10-06 00:03:50,024 INFO L87 Difference]: Start difference. First operand 87 states and 218 transitions. Second operand 27 states. [2020-10-06 00:03:51,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:03:51,284 INFO L93 Difference]: Finished difference Result 125 states and 296 transitions. [2020-10-06 00:03:51,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-06 00:03:51,285 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 30 [2020-10-06 00:03:51,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:03:51,286 INFO L225 Difference]: With dead ends: 125 [2020-10-06 00:03:51,286 INFO L226 Difference]: Without dead ends: 119 [2020-10-06 00:03:51,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=891, Invalid=2649, Unknown=0, NotChecked=0, Total=3540 [2020-10-06 00:03:51,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-06 00:03:51,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 89. [2020-10-06 00:03:51,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-06 00:03:51,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 224 transitions. [2020-10-06 00:03:51,289 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 224 transitions. Word has length 30 [2020-10-06 00:03:51,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:03:51,289 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 224 transitions. [2020-10-06 00:03:51,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-06 00:03:51,290 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 224 transitions. [2020-10-06 00:03:51,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-06 00:03:51,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:03:51,290 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:03:51,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,125 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:03:51,494 INFO L427 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:03:51,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:03:51,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1448798813, now seen corresponding path program 126 times [2020-10-06 00:03:51,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:03:51,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826500648] [2020-10-06 00:03:51,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:03:51,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:51,877 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:51,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826500648] [2020-10-06 00:03:51,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230018716] [2020-10-06 00:03:51,878 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:03:51,937 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-10-06 00:03:51,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:03:51,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-06 00:03:51,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:03:51,967 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:51,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:03:51,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2020-10-06 00:03:51,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1902418493] [2020-10-06 00:03:51,968 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:03:51,970 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:03:51,979 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 44 transitions. [2020-10-06 00:03:51,979 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:03:51,988 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:51,988 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:52,022 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [47703#(and (<= ~j~0 18) (< ~i~0 46))] [2020-10-06 00:03:52,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-06 00:03:52,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:03:52,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-06 00:03:52,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2020-10-06 00:03:52,023 INFO L87 Difference]: Start difference. First operand 89 states and 224 transitions. Second operand 27 states. [2020-10-06 00:03:53,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:03:53,384 INFO L93 Difference]: Finished difference Result 123 states and 294 transitions. [2020-10-06 00:03:53,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-06 00:03:53,385 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 30 [2020-10-06 00:03:53,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:03:53,386 INFO L225 Difference]: With dead ends: 123 [2020-10-06 00:03:53,386 INFO L226 Difference]: Without dead ends: 117 [2020-10-06 00:03:53,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 877 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=967, Invalid=2815, Unknown=0, NotChecked=0, Total=3782 [2020-10-06 00:03:53,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-06 00:03:53,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 91. [2020-10-06 00:03:53,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-06 00:03:53,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 230 transitions. [2020-10-06 00:03:53,390 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 230 transitions. Word has length 30 [2020-10-06 00:03:53,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:03:53,390 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 230 transitions. [2020-10-06 00:03:53,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-06 00:03:53,390 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 230 transitions. [2020-10-06 00:03:53,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-06 00:03:53,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:03:53,391 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:03:53,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2020-10-06 00:03:53,594 INFO L427 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:03:53,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:03:53,594 INFO L82 PathProgramCache]: Analyzing trace with hash -2080766331, now seen corresponding path program 127 times [2020-10-06 00:03:53,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:03:53,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379193859] [2020-10-06 00:03:53,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:03:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:53,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379193859] [2020-10-06 00:03:53,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230278435] [2020-10-06 00:03:53,958 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:03:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:54,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-06 00:03:54,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:03:54,039 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:54,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:03:54,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2020-10-06 00:03:54,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1044639497] [2020-10-06 00:03:54,039 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:03:54,041 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:03:54,048 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 44 transitions. [2020-10-06 00:03:54,048 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:03:54,058 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:54,059 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:54,106 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [48192#(and (<= ~j~0 20) (< ~i~0 46))] [2020-10-06 00:03:54,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-06 00:03:54,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:03:54,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-06 00:03:54,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2020-10-06 00:03:54,107 INFO L87 Difference]: Start difference. First operand 91 states and 230 transitions. Second operand 27 states. [2020-10-06 00:03:55,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:03:55,574 INFO L93 Difference]: Finished difference Result 121 states and 292 transitions. [2020-10-06 00:03:55,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-06 00:03:55,574 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 30 [2020-10-06 00:03:55,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:03:55,575 INFO L225 Difference]: With dead ends: 121 [2020-10-06 00:03:55,575 INFO L226 Difference]: Without dead ends: 115 [2020-10-06 00:03:55,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1059, Invalid=2973, Unknown=0, NotChecked=0, Total=4032 [2020-10-06 00:03:55,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-06 00:03:55,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 93. [2020-10-06 00:03:55,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-06 00:03:55,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 236 transitions. [2020-10-06 00:03:55,578 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 236 transitions. Word has length 30 [2020-10-06 00:03:55,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:03:55,578 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 236 transitions. [2020-10-06 00:03:55,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-06 00:03:55,579 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 236 transitions. [2020-10-06 00:03:55,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-06 00:03:55,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:03:55,579 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:03:55,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,127 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:03:55,780 INFO L427 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:03:55,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:03:55,780 INFO L82 PathProgramCache]: Analyzing trace with hash 792315879, now seen corresponding path program 128 times [2020-10-06 00:03:55,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:03:55,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883589314] [2020-10-06 00:03:55,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:03:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:56,142 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:56,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883589314] [2020-10-06 00:03:56,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896403422] [2020-10-06 00:03:56,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:03:56,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:03:56,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:03:56,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-06 00:03:56,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:03:56,224 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:56,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:03:56,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2020-10-06 00:03:56,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1430861935] [2020-10-06 00:03:56,225 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:03:56,227 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:03:56,234 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 44 transitions. [2020-10-06 00:03:56,234 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:03:56,250 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:56,250 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:56,284 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [48687#(and (<= ~j~0 22) (< ~i~0 46))] [2020-10-06 00:03:56,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-06 00:03:56,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:03:56,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-06 00:03:56,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2020-10-06 00:03:56,285 INFO L87 Difference]: Start difference. First operand 93 states and 236 transitions. Second operand 27 states. [2020-10-06 00:03:57,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:03:57,839 INFO L93 Difference]: Finished difference Result 119 states and 290 transitions. [2020-10-06 00:03:57,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-06 00:03:57,840 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 30 [2020-10-06 00:03:57,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:03:57,840 INFO L225 Difference]: With dead ends: 119 [2020-10-06 00:03:57,840 INFO L226 Difference]: Without dead ends: 113 [2020-10-06 00:03:57,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1067 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1167, Invalid=3123, Unknown=0, NotChecked=0, Total=4290 [2020-10-06 00:03:57,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-06 00:03:57,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 95. [2020-10-06 00:03:57,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-06 00:03:57,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 242 transitions. [2020-10-06 00:03:57,842 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 242 transitions. Word has length 30 [2020-10-06 00:03:57,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:03:57,843 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 242 transitions. [2020-10-06 00:03:57,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-06 00:03:57,843 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 242 transitions. [2020-10-06 00:03:57,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-06 00:03:57,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:03:57,843 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:03:58,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2020-10-06 00:03:58,045 INFO L427 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:03:58,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:03:58,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1327597111, now seen corresponding path program 129 times [2020-10-06 00:03:58,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:03:58,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030749657] [2020-10-06 00:03:58,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:03:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:03:58,399 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:58,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030749657] [2020-10-06 00:03:58,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830674591] [2020-10-06 00:03:58,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:03:58,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-10-06 00:03:58,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:03:58,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-06 00:03:58,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:03:58,498 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:03:58,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:03:58,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2020-10-06 00:03:58,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1717954920] [2020-10-06 00:03:58,499 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:03:58,501 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:03:58,508 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 44 transitions. [2020-10-06 00:03:58,508 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:03:58,516 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:03:58,516 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:03:58,554 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [49188#(and (<= ~j~0 24) (< ~i~0 46))] [2020-10-06 00:03:58,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-06 00:03:58,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:03:58,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-06 00:03:58,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2020-10-06 00:03:58,555 INFO L87 Difference]: Start difference. First operand 95 states and 242 transitions. Second operand 27 states. [2020-10-06 00:04:00,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:04:00,237 INFO L93 Difference]: Finished difference Result 117 states and 288 transitions. [2020-10-06 00:04:00,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-06 00:04:00,237 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 30 [2020-10-06 00:04:00,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:04:00,238 INFO L225 Difference]: With dead ends: 117 [2020-10-06 00:04:00,238 INFO L226 Difference]: Without dead ends: 111 [2020-10-06 00:04:00,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1168 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1291, Invalid=3265, Unknown=0, NotChecked=0, Total=4556 [2020-10-06 00:04:00,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-06 00:04:00,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 97. [2020-10-06 00:04:00,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-06 00:04:00,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 248 transitions. [2020-10-06 00:04:00,241 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 248 transitions. Word has length 30 [2020-10-06 00:04:00,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:04:00,241 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 248 transitions. [2020-10-06 00:04:00,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-06 00:04:00,241 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 248 transitions. [2020-10-06 00:04:00,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-06 00:04:00,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:04:00,241 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:04:00,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,129 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:04:00,447 INFO L427 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:04:00,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:04:00,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1718238251, now seen corresponding path program 130 times [2020-10-06 00:04:00,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:04:00,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003967982] [2020-10-06 00:04:00,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:04:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:04:00,814 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:00,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003967982] [2020-10-06 00:04:00,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532305463] [2020-10-06 00:04:00,814 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:04:00,868 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 00:04:00,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:04:00,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-06 00:04:00,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:04:00,897 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:00,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:04:00,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2020-10-06 00:04:00,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1293923155] [2020-10-06 00:04:00,898 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:04:00,900 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:04:00,907 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 44 transitions. [2020-10-06 00:04:00,907 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:04:00,916 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:04:00,916 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:04:00,948 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [49695#(and (<= ~j~0 26) (< ~i~0 46))] [2020-10-06 00:04:00,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-06 00:04:00,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:04:00,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-06 00:04:00,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2020-10-06 00:04:00,949 INFO L87 Difference]: Start difference. First operand 97 states and 248 transitions. Second operand 27 states. [2020-10-06 00:04:02,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:04:02,741 INFO L93 Difference]: Finished difference Result 117 states and 291 transitions. [2020-10-06 00:04:02,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-06 00:04:02,742 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 30 [2020-10-06 00:04:02,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:04:02,742 INFO L225 Difference]: With dead ends: 117 [2020-10-06 00:04:02,743 INFO L226 Difference]: Without dead ends: 111 [2020-10-06 00:04:02,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1273 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1431, Invalid=3399, Unknown=0, NotChecked=0, Total=4830 [2020-10-06 00:04:02,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-06 00:04:02,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2020-10-06 00:04:02,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-06 00:04:02,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 256 transitions. [2020-10-06 00:04:02,745 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 256 transitions. Word has length 30 [2020-10-06 00:04:02,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:04:02,745 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 256 transitions. [2020-10-06 00:04:02,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-06 00:04:02,745 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 256 transitions. [2020-10-06 00:04:02,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-06 00:04:02,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:04:02,746 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:04:02,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,130 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:04:02,946 INFO L427 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:04:02,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:04:02,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1734815501, now seen corresponding path program 131 times [2020-10-06 00:04:02,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:04:02,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148748153] [2020-10-06 00:04:02,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:04:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:04:03,295 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:03,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148748153] [2020-10-06 00:04:03,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765417250] [2020-10-06 00:04:03,296 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:04:03,367 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-10-06 00:04:03,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:04:03,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-06 00:04:03,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:04:03,398 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:03,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:04:03,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2020-10-06 00:04:03,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1375630331] [2020-10-06 00:04:03,399 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:04:03,401 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:04:03,409 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 44 transitions. [2020-10-06 00:04:03,409 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:04:03,410 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:04:03,410 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:04:03,457 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [50210#(and (<= ~j~0 28) (< ~i~0 46))] [2020-10-06 00:04:03,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-06 00:04:03,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:04:03,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-06 00:04:03,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2020-10-06 00:04:03,458 INFO L87 Difference]: Start difference. First operand 99 states and 256 transitions. Second operand 27 states. [2020-10-06 00:04:05,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:04:05,310 INFO L93 Difference]: Finished difference Result 117 states and 299 transitions. [2020-10-06 00:04:05,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-06 00:04:05,311 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 30 [2020-10-06 00:04:05,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:04:05,312 INFO L225 Difference]: With dead ends: 117 [2020-10-06 00:04:05,312 INFO L226 Difference]: Without dead ends: 105 [2020-10-06 00:04:05,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1382 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1585, Invalid=3527, Unknown=0, NotChecked=0, Total=5112 [2020-10-06 00:04:05,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-06 00:04:05,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 74. [2020-10-06 00:04:05,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-06 00:04:05,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 182 transitions. [2020-10-06 00:04:05,315 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 182 transitions. Word has length 30 [2020-10-06 00:04:05,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:04:05,315 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 182 transitions. [2020-10-06 00:04:05,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-06 00:04:05,315 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 182 transitions. [2020-10-06 00:04:05,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-06 00:04:05,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:04:05,315 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:04:05,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:04:05,516 INFO L427 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:04:05,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:04:05,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1128130483, now seen corresponding path program 132 times [2020-10-06 00:04:05,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:04:05,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786959563] [2020-10-06 00:04:05,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:04:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:04:06,006 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:06,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786959563] [2020-10-06 00:04:06,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152902326] [2020-10-06 00:04:06,007 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:04:06,065 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-10-06 00:04:06,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:04:06,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-06 00:04:06,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:04:06,078 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:06,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:04:06,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-10-06 00:04:06,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [318565475] [2020-10-06 00:04:06,079 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:04:06,081 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:04:06,088 INFO L258 McrAutomatonBuilder]: Finished intersection with 41 states and 51 transitions. [2020-10-06 00:04:06,089 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:04:06,097 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:04:06,097 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:04:06,132 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:04:06,133 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:04:06,167 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:04:06,167 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:04:06,172 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:04:06,173 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:04:06,182 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [50683#(and (<= ~j~0 4) (< ~i~0 46))] [2020-10-06 00:04:06,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-06 00:04:06,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:04:06,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-06 00:04:06,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=570, Unknown=0, NotChecked=0, Total=756 [2020-10-06 00:04:06,183 INFO L87 Difference]: Start difference. First operand 74 states and 182 transitions. Second operand 28 states. [2020-10-06 00:04:07,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:04:07,140 INFO L93 Difference]: Finished difference Result 114 states and 266 transitions. [2020-10-06 00:04:07,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-06 00:04:07,142 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 31 [2020-10-06 00:04:07,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:04:07,142 INFO L225 Difference]: With dead ends: 114 [2020-10-06 00:04:07,142 INFO L226 Difference]: Without dead ends: 108 [2020-10-06 00:04:07,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=809, Invalid=1947, Unknown=0, NotChecked=0, Total=2756 [2020-10-06 00:04:07,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-06 00:04:07,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 82. [2020-10-06 00:04:07,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-06 00:04:07,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 202 transitions. [2020-10-06 00:04:07,144 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 202 transitions. Word has length 31 [2020-10-06 00:04:07,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:04:07,144 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 202 transitions. [2020-10-06 00:04:07,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-06 00:04:07,144 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 202 transitions. [2020-10-06 00:04:07,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-06 00:04:07,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:04:07,145 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:04:07,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2020-10-06 00:04:07,349 INFO L427 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:04:07,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:04:07,349 INFO L82 PathProgramCache]: Analyzing trace with hash 517654063, now seen corresponding path program 133 times [2020-10-06 00:04:07,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:04:07,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594089094] [2020-10-06 00:04:07,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:04:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:04:07,837 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:07,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594089094] [2020-10-06 00:04:07,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302472287] [2020-10-06 00:04:07,838 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:04:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:04:07,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-06 00:04:07,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:04:07,906 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:07,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:04:07,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-10-06 00:04:07,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1882732169] [2020-10-06 00:04:07,906 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:04:07,908 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:04:07,915 INFO L258 McrAutomatonBuilder]: Finished intersection with 37 states and 41 transitions. [2020-10-06 00:04:07,916 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:04:07,921 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:04:07,922 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:04:07,961 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [51129#(and (<= ~j~0 6) (< ~i~0 46))] [2020-10-06 00:04:07,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-06 00:04:07,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:04:07,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-06 00:04:07,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2020-10-06 00:04:07,962 INFO L87 Difference]: Start difference. First operand 82 states and 202 transitions. Second operand 28 states. [2020-10-06 00:04:08,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:04:08,999 INFO L93 Difference]: Finished difference Result 162 states and 364 transitions. [2020-10-06 00:04:08,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-06 00:04:08,999 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 31 [2020-10-06 00:04:08,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:04:09,000 INFO L225 Difference]: With dead ends: 162 [2020-10-06 00:04:09,000 INFO L226 Difference]: Without dead ends: 156 [2020-10-06 00:04:09,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=872, Invalid=2320, Unknown=0, NotChecked=0, Total=3192 [2020-10-06 00:04:09,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-06 00:04:09,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 84. [2020-10-06 00:04:09,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-06 00:04:09,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 208 transitions. [2020-10-06 00:04:09,003 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 208 transitions. Word has length 31 [2020-10-06 00:04:09,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:04:09,003 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 208 transitions. [2020-10-06 00:04:09,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-06 00:04:09,003 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 208 transitions. [2020-10-06 00:04:09,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-06 00:04:09,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:04:09,004 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:04:09,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2020-10-06 00:04:09,211 INFO L427 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:04:09,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:04:09,211 INFO L82 PathProgramCache]: Analyzing trace with hash -106330991, now seen corresponding path program 134 times [2020-10-06 00:04:09,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:04:09,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915178231] [2020-10-06 00:04:09,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:04:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:04:09,691 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:09,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915178231] [2020-10-06 00:04:09,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947422080] [2020-10-06 00:04:09,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:04:09,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:04:09,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:04:09,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-06 00:04:09,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:04:09,763 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:09,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:04:09,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-10-06 00:04:09,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1805251543] [2020-10-06 00:04:09,764 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:04:09,765 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:04:09,773 INFO L258 McrAutomatonBuilder]: Finished intersection with 37 states and 41 transitions. [2020-10-06 00:04:09,773 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:04:09,778 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:04:09,779 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:04:09,818 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [51635#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-06 00:04:09,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-06 00:04:09,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:04:09,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-06 00:04:09,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2020-10-06 00:04:09,819 INFO L87 Difference]: Start difference. First operand 84 states and 208 transitions. Second operand 28 states. [2020-10-06 00:04:10,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:04:10,952 INFO L93 Difference]: Finished difference Result 159 states and 360 transitions. [2020-10-06 00:04:10,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-06 00:04:10,954 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 31 [2020-10-06 00:04:10,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:04:10,954 INFO L225 Difference]: With dead ends: 159 [2020-10-06 00:04:10,954 INFO L226 Difference]: Without dead ends: 153 [2020-10-06 00:04:10,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=897, Invalid=2525, Unknown=0, NotChecked=0, Total=3422 [2020-10-06 00:04:10,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-06 00:04:10,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 86. [2020-10-06 00:04:10,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-06 00:04:10,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 214 transitions. [2020-10-06 00:04:10,958 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 214 transitions. Word has length 31 [2020-10-06 00:04:10,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:04:10,958 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 214 transitions. [2020-10-06 00:04:10,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-06 00:04:10,958 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 214 transitions. [2020-10-06 00:04:10,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-06 00:04:10,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:04:10,959 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:04:11,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2020-10-06 00:04:11,160 INFO L427 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:04:11,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:04:11,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1282962291, now seen corresponding path program 135 times [2020-10-06 00:04:11,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:04:11,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136320507] [2020-10-06 00:04:11,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:04:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:04:11,603 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:11,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136320507] [2020-10-06 00:04:11,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706070203] [2020-10-06 00:04:11,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:04:11,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-10-06 00:04:11,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:04:11,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-06 00:04:11,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:04:11,684 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:11,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:04:11,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-10-06 00:04:11,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1732684275] [2020-10-06 00:04:11,685 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:04:11,686 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:04:11,708 INFO L258 McrAutomatonBuilder]: Finished intersection with 37 states and 41 transitions. [2020-10-06 00:04:11,708 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:04:11,715 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:04:11,715 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:04:11,755 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [52146#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-06 00:04:11,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-06 00:04:11,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:04:11,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-06 00:04:11,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2020-10-06 00:04:11,756 INFO L87 Difference]: Start difference. First operand 86 states and 214 transitions. Second operand 28 states. [2020-10-06 00:04:12,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:04:12,977 INFO L93 Difference]: Finished difference Result 157 states and 358 transitions. [2020-10-06 00:04:12,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-06 00:04:12,977 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 31 [2020-10-06 00:04:12,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:04:12,978 INFO L225 Difference]: With dead ends: 157 [2020-10-06 00:04:12,978 INFO L226 Difference]: Without dead ends: 151 [2020-10-06 00:04:12,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 822 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=938, Invalid=2722, Unknown=0, NotChecked=0, Total=3660 [2020-10-06 00:04:12,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-06 00:04:12,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 88. [2020-10-06 00:04:12,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-06 00:04:12,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 220 transitions. [2020-10-06 00:04:12,981 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 220 transitions. Word has length 31 [2020-10-06 00:04:12,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:04:12,981 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 220 transitions. [2020-10-06 00:04:12,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-06 00:04:12,981 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 220 transitions. [2020-10-06 00:04:12,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-06 00:04:12,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:04:12,981 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:04:13,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2020-10-06 00:04:13,184 INFO L427 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:04:13,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:04:13,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1566985515, now seen corresponding path program 136 times [2020-10-06 00:04:13,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:04:13,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358030508] [2020-10-06 00:04:13,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:04:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:04:13,626 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:13,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358030508] [2020-10-06 00:04:13,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968406060] [2020-10-06 00:04:13,627 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:04:13,680 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 00:04:13,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:04:13,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-06 00:04:13,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:04:13,700 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:13,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:04:13,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-10-06 00:04:13,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [153950214] [2020-10-06 00:04:13,701 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:04:13,703 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:04:13,710 INFO L258 McrAutomatonBuilder]: Finished intersection with 37 states and 41 transitions. [2020-10-06 00:04:13,710 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:04:13,716 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:04:13,717 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:04:13,755 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [52663#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-06 00:04:13,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-06 00:04:13,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:04:13,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-06 00:04:13,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2020-10-06 00:04:13,756 INFO L87 Difference]: Start difference. First operand 88 states and 220 transitions. Second operand 28 states. [2020-10-06 00:04:15,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:04:15,072 INFO L93 Difference]: Finished difference Result 155 states and 356 transitions. [2020-10-06 00:04:15,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-06 00:04:15,073 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 31 [2020-10-06 00:04:15,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:04:15,074 INFO L225 Difference]: With dead ends: 155 [2020-10-06 00:04:15,074 INFO L226 Difference]: Without dead ends: 149 [2020-10-06 00:04:15,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 920 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=995, Invalid=2911, Unknown=0, NotChecked=0, Total=3906 [2020-10-06 00:04:15,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-06 00:04:15,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 90. [2020-10-06 00:04:15,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-06 00:04:15,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 226 transitions. [2020-10-06 00:04:15,077 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 226 transitions. Word has length 31 [2020-10-06 00:04:15,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:04:15,077 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 226 transitions. [2020-10-06 00:04:15,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-06 00:04:15,077 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 226 transitions. [2020-10-06 00:04:15,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-06 00:04:15,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:04:15,078 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:04:15,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2020-10-06 00:04:15,278 INFO L427 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:04:15,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:04:15,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1969709751, now seen corresponding path program 137 times [2020-10-06 00:04:15,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:04:15,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276998127] [2020-10-06 00:04:15,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:04:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:04:15,711 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:15,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276998127] [2020-10-06 00:04:15,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661742600] [2020-10-06 00:04:15,711 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:04:15,767 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-10-06 00:04:15,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:04:15,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-06 00:04:15,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:04:15,791 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:15,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:04:15,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-10-06 00:04:15,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [914479129] [2020-10-06 00:04:15,791 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:04:15,793 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:04:15,800 INFO L258 McrAutomatonBuilder]: Finished intersection with 37 states and 41 transitions. [2020-10-06 00:04:15,800 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:04:15,809 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:04:15,810 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:04:15,845 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [53186#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-06 00:04:15,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-06 00:04:15,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:04:15,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-06 00:04:15,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2020-10-06 00:04:15,846 INFO L87 Difference]: Start difference. First operand 90 states and 226 transitions. Second operand 28 states. [2020-10-06 00:04:17,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:04:17,281 INFO L93 Difference]: Finished difference Result 153 states and 354 transitions. [2020-10-06 00:04:17,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-06 00:04:17,281 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 31 [2020-10-06 00:04:17,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:04:17,282 INFO L225 Difference]: With dead ends: 153 [2020-10-06 00:04:17,282 INFO L226 Difference]: Without dead ends: 147 [2020-10-06 00:04:17,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1068, Invalid=3092, Unknown=0, NotChecked=0, Total=4160 [2020-10-06 00:04:17,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-06 00:04:17,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 92. [2020-10-06 00:04:17,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-06 00:04:17,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 232 transitions. [2020-10-06 00:04:17,285 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 232 transitions. Word has length 31 [2020-10-06 00:04:17,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:04:17,285 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 232 transitions. [2020-10-06 00:04:17,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-06 00:04:17,285 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 232 transitions. [2020-10-06 00:04:17,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-06 00:04:17,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:04:17,286 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:04:17,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:04:17,487 INFO L427 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:04:17,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:04:17,487 INFO L82 PathProgramCache]: Analyzing trace with hash 239313689, now seen corresponding path program 138 times [2020-10-06 00:04:17,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:04:17,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284813530] [2020-10-06 00:04:17,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:04:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:04:17,895 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:17,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284813530] [2020-10-06 00:04:17,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41547873] [2020-10-06 00:04:17,895 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:04:17,958 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-10-06 00:04:17,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:04:17,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-06 00:04:17,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:04:17,984 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:17,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:04:17,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-10-06 00:04:17,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [654095439] [2020-10-06 00:04:17,985 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:04:17,987 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:04:17,998 INFO L258 McrAutomatonBuilder]: Finished intersection with 37 states and 41 transitions. [2020-10-06 00:04:17,999 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:04:18,007 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:04:18,007 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:04:18,045 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [53715#(and (<= ~j~0 16) (< ~i~0 46))] [2020-10-06 00:04:18,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-06 00:04:18,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:04:18,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-06 00:04:18,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2020-10-06 00:04:18,046 INFO L87 Difference]: Start difference. First operand 92 states and 232 transitions. Second operand 28 states. [2020-10-06 00:04:19,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:04:19,579 INFO L93 Difference]: Finished difference Result 151 states and 352 transitions. [2020-10-06 00:04:19,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-06 00:04:19,579 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 31 [2020-10-06 00:04:19,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:04:19,580 INFO L225 Difference]: With dead ends: 151 [2020-10-06 00:04:19,580 INFO L226 Difference]: Without dead ends: 145 [2020-10-06 00:04:19,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1157, Invalid=3265, Unknown=0, NotChecked=0, Total=4422 [2020-10-06 00:04:19,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-06 00:04:19,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 94. [2020-10-06 00:04:19,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-06 00:04:19,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 238 transitions. [2020-10-06 00:04:19,583 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 238 transitions. Word has length 31 [2020-10-06 00:04:19,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:04:19,583 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 238 transitions. [2020-10-06 00:04:19,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-06 00:04:19,584 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 238 transitions. [2020-10-06 00:04:19,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-06 00:04:19,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:04:19,584 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:04:19,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2020-10-06 00:04:19,785 INFO L427 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:04:19,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:04:19,785 INFO L82 PathProgramCache]: Analyzing trace with hash -392653829, now seen corresponding path program 139 times [2020-10-06 00:04:19,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:04:19,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057118014] [2020-10-06 00:04:19,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:04:19,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:04:20,190 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:20,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057118014] [2020-10-06 00:04:20,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002256314] [2020-10-06 00:04:20,191 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:04:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:04:20,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-06 00:04:20,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:04:20,271 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:20,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:04:20,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-10-06 00:04:20,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1706492339] [2020-10-06 00:04:20,271 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:04:20,273 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:04:20,280 INFO L258 McrAutomatonBuilder]: Finished intersection with 37 states and 41 transitions. [2020-10-06 00:04:20,280 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:04:20,283 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:04:20,283 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:04:20,327 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [54250#(and (<= ~j~0 18) (< ~i~0 46))] [2020-10-06 00:04:20,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-06 00:04:20,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:04:20,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-06 00:04:20,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=633, Unknown=0, NotChecked=0, Total=756 [2020-10-06 00:04:20,327 INFO L87 Difference]: Start difference. First operand 94 states and 238 transitions. Second operand 28 states. [2020-10-06 00:04:21,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:04:21,963 INFO L93 Difference]: Finished difference Result 149 states and 350 transitions. [2020-10-06 00:04:21,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-06 00:04:21,963 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 31 [2020-10-06 00:04:21,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:04:21,964 INFO L225 Difference]: With dead ends: 149 [2020-10-06 00:04:21,964 INFO L226 Difference]: Without dead ends: 143 [2020-10-06 00:04:21,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1238 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1262, Invalid=3430, Unknown=0, NotChecked=0, Total=4692 [2020-10-06 00:04:21,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-06 00:04:21,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 96. [2020-10-06 00:04:21,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-06 00:04:21,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 244 transitions. [2020-10-06 00:04:21,967 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 244 transitions. Word has length 31 [2020-10-06 00:04:21,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:04:21,968 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 244 transitions. [2020-10-06 00:04:21,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-06 00:04:21,968 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 244 transitions. [2020-10-06 00:04:21,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-06 00:04:21,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:04:21,968 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:04:22,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,139 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:04:22,169 INFO L427 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:04:22,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:04:22,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1814538915, now seen corresponding path program 140 times [2020-10-06 00:04:22,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:04:22,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297444083] [2020-10-06 00:04:22,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:04:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:04:22,560 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:22,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297444083] [2020-10-06 00:04:22,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207022196] [2020-10-06 00:04:22,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:04:22,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:04:22,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:04:22,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-06 00:04:22,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:04:22,639 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:22,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:04:22,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-10-06 00:04:22,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [754607427] [2020-10-06 00:04:22,640 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:04:22,642 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:04:22,666 INFO L258 McrAutomatonBuilder]: Finished intersection with 37 states and 41 transitions. [2020-10-06 00:04:22,666 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:04:22,673 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:04:22,673 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:04:22,711 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [54791#(and (<= ~j~0 20) (< ~i~0 46))] [2020-10-06 00:04:22,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-06 00:04:22,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:04:22,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-06 00:04:22,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2020-10-06 00:04:22,712 INFO L87 Difference]: Start difference. First operand 96 states and 244 transitions. Second operand 28 states. [2020-10-06 00:04:24,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:04:24,436 INFO L93 Difference]: Finished difference Result 147 states and 348 transitions. [2020-10-06 00:04:24,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-06 00:04:24,437 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 31 [2020-10-06 00:04:24,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:04:24,438 INFO L225 Difference]: With dead ends: 147 [2020-10-06 00:04:24,438 INFO L226 Difference]: Without dead ends: 141 [2020-10-06 00:04:24,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1352 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1383, Invalid=3587, Unknown=0, NotChecked=0, Total=4970 [2020-10-06 00:04:24,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-06 00:04:24,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 98. [2020-10-06 00:04:24,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-06 00:04:24,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 250 transitions. [2020-10-06 00:04:24,442 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 250 transitions. Word has length 31 [2020-10-06 00:04:24,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:04:24,442 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 250 transitions. [2020-10-06 00:04:24,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-06 00:04:24,442 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 250 transitions. [2020-10-06 00:04:24,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-06 00:04:24,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:04:24,442 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:04:24,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,140 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:04:24,643 INFO L427 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:04:24,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:04:24,644 INFO L82 PathProgramCache]: Analyzing trace with hash 360515391, now seen corresponding path program 141 times [2020-10-06 00:04:24,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:04:24,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672904885] [2020-10-06 00:04:24,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:04:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:04:25,042 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:25,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672904885] [2020-10-06 00:04:25,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141660187] [2020-10-06 00:04:25,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:04:25,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-10-06 00:04:25,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:04:25,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-06 00:04:25,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:04:25,131 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:25,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:04:25,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-10-06 00:04:25,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1998500651] [2020-10-06 00:04:25,132 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:04:25,133 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:04:25,140 INFO L258 McrAutomatonBuilder]: Finished intersection with 37 states and 41 transitions. [2020-10-06 00:04:25,141 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:04:25,151 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:04:25,151 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:04:25,187 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [55338#(and (<= ~j~0 22) (< ~i~0 46))] [2020-10-06 00:04:25,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-06 00:04:25,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:04:25,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-06 00:04:25,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2020-10-06 00:04:25,189 INFO L87 Difference]: Start difference. First operand 98 states and 250 transitions. Second operand 28 states. [2020-10-06 00:04:27,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:04:27,040 INFO L93 Difference]: Finished difference Result 145 states and 346 transitions. [2020-10-06 00:04:27,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-06 00:04:27,041 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 31 [2020-10-06 00:04:27,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:04:27,041 INFO L225 Difference]: With dead ends: 145 [2020-10-06 00:04:27,041 INFO L226 Difference]: Without dead ends: 139 [2020-10-06 00:04:27,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1470 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1520, Invalid=3736, Unknown=0, NotChecked=0, Total=5256 [2020-10-06 00:04:27,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-06 00:04:27,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 100. [2020-10-06 00:04:27,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-06 00:04:27,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 256 transitions. [2020-10-06 00:04:27,044 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 256 transitions. Word has length 31 [2020-10-06 00:04:27,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:04:27,045 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 256 transitions. [2020-10-06 00:04:27,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-06 00:04:27,045 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 256 transitions. [2020-10-06 00:04:27,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-06 00:04:27,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:04:27,045 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:04:27,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,141 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:04:27,246 INFO L427 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:04:27,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:04:27,246 INFO L82 PathProgramCache]: Analyzing trace with hash -888616543, now seen corresponding path program 142 times [2020-10-06 00:04:27,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:04:27,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099676496] [2020-10-06 00:04:27,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:04:27,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:04:27,634 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:27,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099676496] [2020-10-06 00:04:27,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308346454] [2020-10-06 00:04:27,635 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:04:27,687 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 00:04:27,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:04:27,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-06 00:04:27,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:04:27,719 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:27,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:04:27,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-10-06 00:04:27,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2044144254] [2020-10-06 00:04:27,720 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:04:27,722 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:04:27,730 INFO L258 McrAutomatonBuilder]: Finished intersection with 37 states and 41 transitions. [2020-10-06 00:04:27,730 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:04:27,738 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:04:27,739 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:04:27,777 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [55891#(and (<= ~j~0 24) (< ~i~0 46))] [2020-10-06 00:04:27,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-06 00:04:27,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:04:27,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-06 00:04:27,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2020-10-06 00:04:27,779 INFO L87 Difference]: Start difference. First operand 100 states and 256 transitions. Second operand 28 states. [2020-10-06 00:04:29,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:04:29,734 INFO L93 Difference]: Finished difference Result 145 states and 349 transitions. [2020-10-06 00:04:29,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-06 00:04:29,735 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 31 [2020-10-06 00:04:29,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:04:29,736 INFO L225 Difference]: With dead ends: 145 [2020-10-06 00:04:29,736 INFO L226 Difference]: Without dead ends: 139 [2020-10-06 00:04:29,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1592 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1673, Invalid=3877, Unknown=0, NotChecked=0, Total=5550 [2020-10-06 00:04:29,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-06 00:04:29,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 102. [2020-10-06 00:04:29,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-06 00:04:29,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 264 transitions. [2020-10-06 00:04:29,739 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 264 transitions. Word has length 31 [2020-10-06 00:04:29,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:04:29,739 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 264 transitions. [2020-10-06 00:04:29,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-06 00:04:29,739 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 264 transitions. [2020-10-06 00:04:29,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-06 00:04:29,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:04:29,740 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:04:29,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,142 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:04:29,940 INFO L427 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:04:29,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:04:29,941 INFO L82 PathProgramCache]: Analyzing trace with hash -872039293, now seen corresponding path program 143 times [2020-10-06 00:04:29,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:04:29,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417312113] [2020-10-06 00:04:29,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:04:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:04:30,328 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:30,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417312113] [2020-10-06 00:04:30,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880783057] [2020-10-06 00:04:30,329 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:04:30,388 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-10-06 00:04:30,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:04:30,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-06 00:04:30,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:04:30,422 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:30,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:04:30,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-10-06 00:04:30,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1821486978] [2020-10-06 00:04:30,423 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:04:30,425 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:04:30,432 INFO L258 McrAutomatonBuilder]: Finished intersection with 37 states and 41 transitions. [2020-10-06 00:04:30,432 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:04:30,439 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:04:30,440 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:04:30,480 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [56452#(and (<= ~j~0 26) (< ~i~0 46))] [2020-10-06 00:04:30,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-06 00:04:30,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:04:30,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-06 00:04:30,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=581, Unknown=0, NotChecked=0, Total=756 [2020-10-06 00:04:30,481 INFO L87 Difference]: Start difference. First operand 102 states and 264 transitions. Second operand 28 states. [2020-10-06 00:04:32,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:04:32,497 INFO L93 Difference]: Finished difference Result 146 states and 359 transitions. [2020-10-06 00:04:32,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-06 00:04:32,498 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 31 [2020-10-06 00:04:32,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:04:32,498 INFO L225 Difference]: With dead ends: 146 [2020-10-06 00:04:32,498 INFO L226 Difference]: Without dead ends: 134 [2020-10-06 00:04:32,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1718 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1840, Invalid=4012, Unknown=0, NotChecked=0, Total=5852 [2020-10-06 00:04:32,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-06 00:04:32,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 78. [2020-10-06 00:04:32,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-06 00:04:32,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 191 transitions. [2020-10-06 00:04:32,501 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 191 transitions. Word has length 31 [2020-10-06 00:04:32,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:04:32,501 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 191 transitions. [2020-10-06 00:04:32,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-06 00:04:32,501 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 191 transitions. [2020-10-06 00:04:32,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-06 00:04:32,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:04:32,502 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:04:32,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2020-10-06 00:04:32,703 INFO L427 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:04:32,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:04:32,703 INFO L82 PathProgramCache]: Analyzing trace with hash 470887608, now seen corresponding path program 144 times [2020-10-06 00:04:32,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:04:32,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845933798] [2020-10-06 00:04:32,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:04:32,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:04:33,263 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:33,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845933798] [2020-10-06 00:04:33,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433354282] [2020-10-06 00:04:33,265 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:04:33,328 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-10-06 00:04:33,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:04:33,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-06 00:04:33,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:04:33,343 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:33,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:04:33,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2020-10-06 00:04:33,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1302036667] [2020-10-06 00:04:33,344 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:04:33,347 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:04:33,355 INFO L258 McrAutomatonBuilder]: Finished intersection with 41 states and 48 transitions. [2020-10-06 00:04:33,355 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:04:33,367 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:04:33,367 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:04:33,406 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [56974#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-06 00:04:33,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-06 00:04:33,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:04:33,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-06 00:04:33,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2020-10-06 00:04:33,408 INFO L87 Difference]: Start difference. First operand 78 states and 191 transitions. Second operand 29 states. [2020-10-06 00:04:34,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:04:34,419 INFO L93 Difference]: Finished difference Result 142 states and 324 transitions. [2020-10-06 00:04:34,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-06 00:04:34,420 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 32 [2020-10-06 00:04:34,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:04:34,420 INFO L225 Difference]: With dead ends: 142 [2020-10-06 00:04:34,420 INFO L226 Difference]: Without dead ends: 136 [2020-10-06 00:04:34,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=872, Invalid=2208, Unknown=0, NotChecked=0, Total=3080 [2020-10-06 00:04:34,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-06 00:04:34,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 85. [2020-10-06 00:04:34,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-06 00:04:34,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 210 transitions. [2020-10-06 00:04:34,423 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 210 transitions. Word has length 32 [2020-10-06 00:04:34,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:04:34,423 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 210 transitions. [2020-10-06 00:04:34,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-06 00:04:34,423 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 210 transitions. [2020-10-06 00:04:34,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-06 00:04:34,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:04:34,424 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:04:34,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 144 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2020-10-06 00:04:34,625 INFO L427 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:04:34,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:04:34,625 INFO L82 PathProgramCache]: Analyzing trace with hash 2116672154, now seen corresponding path program 145 times [2020-10-06 00:04:34,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:04:34,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020723623] [2020-10-06 00:04:34,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:04:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:04:35,150 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:35,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020723623] [2020-10-06 00:04:35,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330515996] [2020-10-06 00:04:35,151 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:04:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:04:35,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-06 00:04:35,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:04:35,233 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:35,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:04:35,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2020-10-06 00:04:35,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1566245535] [2020-10-06 00:04:35,234 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:04:35,236 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:04:35,244 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 46 transitions. [2020-10-06 00:04:35,244 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:04:35,245 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:04:35,245 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:04:35,293 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [57462#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-06 00:04:35,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-06 00:04:35,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:04:35,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-06 00:04:35,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2020-10-06 00:04:35,294 INFO L87 Difference]: Start difference. First operand 85 states and 210 transitions. Second operand 29 states. [2020-10-06 00:04:36,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:04:36,413 INFO L93 Difference]: Finished difference Result 139 states and 320 transitions. [2020-10-06 00:04:36,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-06 00:04:36,414 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 32 [2020-10-06 00:04:36,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:04:36,415 INFO L225 Difference]: With dead ends: 139 [2020-10-06 00:04:36,415 INFO L226 Difference]: Without dead ends: 133 [2020-10-06 00:04:36,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=882, Invalid=2424, Unknown=0, NotChecked=0, Total=3306 [2020-10-06 00:04:36,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-06 00:04:36,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 87. [2020-10-06 00:04:36,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-06 00:04:36,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 216 transitions. [2020-10-06 00:04:36,417 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 216 transitions. Word has length 32 [2020-10-06 00:04:36,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:04:36,417 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 216 transitions. [2020-10-06 00:04:36,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-06 00:04:36,417 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 216 transitions. [2020-10-06 00:04:36,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-06 00:04:36,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:04:36,418 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:04:36,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2020-10-06 00:04:36,619 INFO L427 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:04:36,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:04:36,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1492687100, now seen corresponding path program 146 times [2020-10-06 00:04:36,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:04:36,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916140716] [2020-10-06 00:04:36,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:04:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:04:37,126 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:37,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916140716] [2020-10-06 00:04:37,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813799617] [2020-10-06 00:04:37,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:04:37,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:04:37,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:04:37,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-06 00:04:37,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:04:37,221 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:37,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:04:37,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2020-10-06 00:04:37,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1358206352] [2020-10-06 00:04:37,222 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:04:37,224 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:04:37,234 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 46 transitions. [2020-10-06 00:04:37,235 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:04:37,235 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:04:37,236 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:04:37,285 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [57955#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-06 00:04:37,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-06 00:04:37,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:04:37,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-06 00:04:37,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2020-10-06 00:04:37,286 INFO L87 Difference]: Start difference. First operand 87 states and 216 transitions. Second operand 29 states. [2020-10-06 00:04:38,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:04:38,518 INFO L93 Difference]: Finished difference Result 137 states and 318 transitions. [2020-10-06 00:04:38,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-06 00:04:38,519 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 32 [2020-10-06 00:04:38,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:04:38,519 INFO L225 Difference]: With dead ends: 137 [2020-10-06 00:04:38,520 INFO L226 Difference]: Without dead ends: 131 [2020-10-06 00:04:38,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=908, Invalid=2632, Unknown=0, NotChecked=0, Total=3540 [2020-10-06 00:04:38,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-06 00:04:38,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 89. [2020-10-06 00:04:38,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-06 00:04:38,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 222 transitions. [2020-10-06 00:04:38,522 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 222 transitions. Word has length 32 [2020-10-06 00:04:38,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:04:38,523 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 222 transitions. [2020-10-06 00:04:38,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-06 00:04:38,523 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 222 transitions. [2020-10-06 00:04:38,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-06 00:04:38,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:04:38,523 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:04:38,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 146 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2020-10-06 00:04:38,724 INFO L427 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:04:38,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:04:38,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1412986914, now seen corresponding path program 147 times [2020-10-06 00:04:38,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:04:38,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673526923] [2020-10-06 00:04:38,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:04:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:04:39,219 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:39,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673526923] [2020-10-06 00:04:39,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297788035] [2020-10-06 00:04:39,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:04:39,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-10-06 00:04:39,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:04:39,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-06 00:04:39,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:04:39,316 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:39,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:04:39,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2020-10-06 00:04:39,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [190574919] [2020-10-06 00:04:39,317 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:04:39,319 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:04:39,328 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 46 transitions. [2020-10-06 00:04:39,328 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:04:39,346 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:04:39,347 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:04:39,387 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [58454#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-06 00:04:39,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-06 00:04:39,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:04:39,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-06 00:04:39,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2020-10-06 00:04:39,388 INFO L87 Difference]: Start difference. First operand 89 states and 222 transitions. Second operand 29 states. [2020-10-06 00:04:40,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:04:40,743 INFO L93 Difference]: Finished difference Result 135 states and 316 transitions. [2020-10-06 00:04:40,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-06 00:04:40,744 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 32 [2020-10-06 00:04:40,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:04:40,744 INFO L225 Difference]: With dead ends: 135 [2020-10-06 00:04:40,745 INFO L226 Difference]: Without dead ends: 129 [2020-10-06 00:04:40,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=950, Invalid=2832, Unknown=0, NotChecked=0, Total=3782 [2020-10-06 00:04:40,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-06 00:04:40,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 91. [2020-10-06 00:04:40,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-06 00:04:40,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 228 transitions. [2020-10-06 00:04:40,748 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 228 transitions. Word has length 32 [2020-10-06 00:04:40,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:04:40,748 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 228 transitions. [2020-10-06 00:04:40,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-06 00:04:40,748 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 228 transitions. [2020-10-06 00:04:40,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-06 00:04:40,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:04:40,748 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:04:40,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2020-10-06 00:04:40,949 INFO L427 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:04:40,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:04:40,950 INFO L82 PathProgramCache]: Analyzing trace with hash 32032576, now seen corresponding path program 148 times [2020-10-06 00:04:40,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:04:40,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264825954] [2020-10-06 00:04:40,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:04:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:04:41,435 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:41,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264825954] [2020-10-06 00:04:41,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947546948] [2020-10-06 00:04:41,435 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:04:41,488 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 00:04:41,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:04:41,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-06 00:04:41,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:04:41,511 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:41,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:04:41,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2020-10-06 00:04:41,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1587982937] [2020-10-06 00:04:41,511 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:04:41,513 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:04:41,521 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 46 transitions. [2020-10-06 00:04:41,521 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:04:41,521 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:04:41,522 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:04:41,567 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [58959#(and (<= ~j~0 16) (< ~i~0 46))] [2020-10-06 00:04:41,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-06 00:04:41,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:04:41,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-06 00:04:41,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2020-10-06 00:04:41,568 INFO L87 Difference]: Start difference. First operand 91 states and 228 transitions. Second operand 29 states. [2020-10-06 00:04:43,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:04:43,008 INFO L93 Difference]: Finished difference Result 133 states and 314 transitions. [2020-10-06 00:04:43,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-06 00:04:43,009 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 32 [2020-10-06 00:04:43,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:04:43,009 INFO L225 Difference]: With dead ends: 133 [2020-10-06 00:04:43,009 INFO L226 Difference]: Without dead ends: 127 [2020-10-06 00:04:43,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 891 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1008, Invalid=3024, Unknown=0, NotChecked=0, Total=4032 [2020-10-06 00:04:43,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-06 00:04:43,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 93. [2020-10-06 00:04:43,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-06 00:04:43,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 234 transitions. [2020-10-06 00:04:43,012 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 234 transitions. Word has length 32 [2020-10-06 00:04:43,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:04:43,012 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 234 transitions. [2020-10-06 00:04:43,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-06 00:04:43,013 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 234 transitions. [2020-10-06 00:04:43,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-06 00:04:43,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:04:43,013 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:04:43,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:04:43,214 INFO L427 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:04:43,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:04:43,214 INFO L82 PathProgramCache]: Analyzing trace with hash -726239454, now seen corresponding path program 149 times [2020-10-06 00:04:43,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:04:43,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227908713] [2020-10-06 00:04:43,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:04:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:04:43,686 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:43,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227908713] [2020-10-06 00:04:43,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298542455] [2020-10-06 00:04:43,687 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:04:43,744 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-10-06 00:04:43,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:04:43,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-06 00:04:43,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:04:43,770 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:43,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:04:43,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2020-10-06 00:04:43,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [131366001] [2020-10-06 00:04:43,770 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:04:43,772 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:04:43,781 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 46 transitions. [2020-10-06 00:04:43,781 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:04:43,791 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:04:43,792 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:04:43,830 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [59470#(and (<= ~j~0 18) (< ~i~0 46))] [2020-10-06 00:04:43,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-06 00:04:43,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:04:43,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-06 00:04:43,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2020-10-06 00:04:43,831 INFO L87 Difference]: Start difference. First operand 93 states and 234 transitions. Second operand 29 states. [2020-10-06 00:04:45,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:04:45,402 INFO L93 Difference]: Finished difference Result 131 states and 312 transitions. [2020-10-06 00:04:45,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-06 00:04:45,403 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 32 [2020-10-06 00:04:45,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:04:45,404 INFO L225 Difference]: With dead ends: 131 [2020-10-06 00:04:45,404 INFO L226 Difference]: Without dead ends: 125 [2020-10-06 00:04:45,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 986 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1082, Invalid=3208, Unknown=0, NotChecked=0, Total=4290 [2020-10-06 00:04:45,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-06 00:04:45,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 95. [2020-10-06 00:04:45,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-06 00:04:45,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 240 transitions. [2020-10-06 00:04:45,407 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 240 transitions. Word has length 32 [2020-10-06 00:04:45,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:04:45,407 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 240 transitions. [2020-10-06 00:04:45,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-06 00:04:45,407 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 240 transitions. [2020-10-06 00:04:45,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-06 00:04:45,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:04:45,407 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:04:45,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,149 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:04:45,608 INFO L427 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:04:45,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:04:45,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1838331780, now seen corresponding path program 150 times [2020-10-06 00:04:45,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:04:45,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031196661] [2020-10-06 00:04:45,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:04:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:04:46,044 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:46,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031196661] [2020-10-06 00:04:46,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606259756] [2020-10-06 00:04:46,045 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:04:46,104 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-10-06 00:04:46,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:04:46,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-06 00:04:46,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:04:46,133 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:46,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:04:46,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2020-10-06 00:04:46,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [668196649] [2020-10-06 00:04:46,134 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:04:46,136 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:04:46,144 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 46 transitions. [2020-10-06 00:04:46,144 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:04:46,153 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:04:46,154 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:04:46,190 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [59987#(and (<= ~j~0 20) (< ~i~0 46))] [2020-10-06 00:04:46,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-06 00:04:46,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:04:46,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-06 00:04:46,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2020-10-06 00:04:46,191 INFO L87 Difference]: Start difference. First operand 95 states and 240 transitions. Second operand 29 states. [2020-10-06 00:04:47,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:04:47,854 INFO L93 Difference]: Finished difference Result 129 states and 310 transitions. [2020-10-06 00:04:47,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-06 00:04:47,855 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 32 [2020-10-06 00:04:47,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:04:47,855 INFO L225 Difference]: With dead ends: 129 [2020-10-06 00:04:47,856 INFO L226 Difference]: Without dead ends: 123 [2020-10-06 00:04:47,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1172, Invalid=3384, Unknown=0, NotChecked=0, Total=4556 [2020-10-06 00:04:47,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-06 00:04:47,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 97. [2020-10-06 00:04:47,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-06 00:04:47,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 246 transitions. [2020-10-06 00:04:47,859 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 246 transitions. Word has length 32 [2020-10-06 00:04:47,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:04:47,859 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 246 transitions. [2020-10-06 00:04:47,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-06 00:04:47,859 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 246 transitions. [2020-10-06 00:04:47,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-06 00:04:47,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:04:47,860 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:04:48,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,150 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:04:48,067 INFO L427 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:04:48,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:04:48,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1206364262, now seen corresponding path program 151 times [2020-10-06 00:04:48,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:04:48,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058830390] [2020-10-06 00:04:48,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:04:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:04:48,508 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:48,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058830390] [2020-10-06 00:04:48,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962820817] [2020-10-06 00:04:48,509 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:04:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:04:48,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-06 00:04:48,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:04:48,589 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:48,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:04:48,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2020-10-06 00:04:48,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [730320768] [2020-10-06 00:04:48,589 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:04:48,591 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:04:48,600 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 46 transitions. [2020-10-06 00:04:48,600 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:04:48,610 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:04:48,610 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:04:48,647 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [60510#(and (<= ~j~0 22) (< ~i~0 46))] [2020-10-06 00:04:48,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-06 00:04:48,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:04:48,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-06 00:04:48,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2020-10-06 00:04:48,648 INFO L87 Difference]: Start difference. First operand 97 states and 246 transitions. Second operand 29 states. [2020-10-06 00:04:50,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:04:50,415 INFO L93 Difference]: Finished difference Result 127 states and 308 transitions. [2020-10-06 00:04:50,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-06 00:04:50,416 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 32 [2020-10-06 00:04:50,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:04:50,417 INFO L225 Difference]: With dead ends: 127 [2020-10-06 00:04:50,417 INFO L226 Difference]: Without dead ends: 121 [2020-10-06 00:04:50,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1188 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1278, Invalid=3552, Unknown=0, NotChecked=0, Total=4830 [2020-10-06 00:04:50,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-06 00:04:50,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 99. [2020-10-06 00:04:50,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-06 00:04:50,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 252 transitions. [2020-10-06 00:04:50,420 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 252 transitions. Word has length 32 [2020-10-06 00:04:50,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:04:50,421 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 252 transitions. [2020-10-06 00:04:50,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-06 00:04:50,421 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 252 transitions. [2020-10-06 00:04:50,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-06 00:04:50,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:04:50,421 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:04:50,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,151 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:04:50,629 INFO L427 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:04:50,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:04:50,630 INFO L82 PathProgramCache]: Analyzing trace with hash -215520824, now seen corresponding path program 152 times [2020-10-06 00:04:50,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:04:50,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319151036] [2020-10-06 00:04:50,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:04:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:04:51,071 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:51,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319151036] [2020-10-06 00:04:51,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531439234] [2020-10-06 00:04:51,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:04:51,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:04:51,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:04:51,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-06 00:04:51,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:04:51,175 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:51,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:04:51,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2020-10-06 00:04:51,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1819933354] [2020-10-06 00:04:51,176 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:04:51,179 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:04:51,189 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 46 transitions. [2020-10-06 00:04:51,190 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:04:51,190 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:04:51,191 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:04:51,255 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [61039#(and (<= ~j~0 24) (< ~i~0 46))] [2020-10-06 00:04:51,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-06 00:04:51,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:04:51,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-06 00:04:51,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2020-10-06 00:04:51,256 INFO L87 Difference]: Start difference. First operand 99 states and 252 transitions. Second operand 29 states. [2020-10-06 00:04:53,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:04:53,209 INFO L93 Difference]: Finished difference Result 125 states and 306 transitions. [2020-10-06 00:04:53,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-06 00:04:53,210 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 32 [2020-10-06 00:04:53,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:04:53,211 INFO L225 Difference]: With dead ends: 125 [2020-10-06 00:04:53,211 INFO L226 Difference]: Without dead ends: 119 [2020-10-06 00:04:53,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1295 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1400, Invalid=3712, Unknown=0, NotChecked=0, Total=5112 [2020-10-06 00:04:53,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-06 00:04:53,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 101. [2020-10-06 00:04:53,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-06 00:04:53,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 258 transitions. [2020-10-06 00:04:53,214 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 258 transitions. Word has length 32 [2020-10-06 00:04:53,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:04:53,214 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 258 transitions. [2020-10-06 00:04:53,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-06 00:04:53,214 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 258 transitions. [2020-10-06 00:04:53,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-06 00:04:53,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:04:53,215 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:04:53,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,152 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:04:53,415 INFO L427 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:04:53,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:04:53,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1959533482, now seen corresponding path program 153 times [2020-10-06 00:04:53,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:04:53,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023544227] [2020-10-06 00:04:53,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:04:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:04:53,847 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:53,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023544227] [2020-10-06 00:04:53,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395933008] [2020-10-06 00:04:53,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:04:53,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-10-06 00:04:53,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:04:53,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-06 00:04:53,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:04:53,939 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:53,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:04:53,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2020-10-06 00:04:53,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [373941339] [2020-10-06 00:04:53,940 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:04:53,942 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:04:53,950 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 46 transitions. [2020-10-06 00:04:53,950 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:04:53,962 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:04:53,962 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:04:54,002 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [61574#(and (<= ~j~0 26) (< ~i~0 46))] [2020-10-06 00:04:54,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-06 00:04:54,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:04:54,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-06 00:04:54,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2020-10-06 00:04:54,003 INFO L87 Difference]: Start difference. First operand 101 states and 258 transitions. Second operand 29 states. [2020-10-06 00:04:56,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:04:56,036 INFO L93 Difference]: Finished difference Result 123 states and 304 transitions. [2020-10-06 00:04:56,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-06 00:04:56,037 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 32 [2020-10-06 00:04:56,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:04:56,037 INFO L225 Difference]: With dead ends: 123 [2020-10-06 00:04:56,037 INFO L226 Difference]: Without dead ends: 117 [2020-10-06 00:04:56,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1406 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1538, Invalid=3864, Unknown=0, NotChecked=0, Total=5402 [2020-10-06 00:04:56,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-06 00:04:56,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 103. [2020-10-06 00:04:56,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-06 00:04:56,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 264 transitions. [2020-10-06 00:04:56,040 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 264 transitions. Word has length 32 [2020-10-06 00:04:56,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:04:56,040 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 264 transitions. [2020-10-06 00:04:56,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-06 00:04:56,041 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 264 transitions. [2020-10-06 00:04:56,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-06 00:04:56,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:04:56,041 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:04:56,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,153 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:04:56,244 INFO L427 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:04:56,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:04:56,244 INFO L82 PathProgramCache]: Analyzing trace with hash 710401548, now seen corresponding path program 154 times [2020-10-06 00:04:56,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:04:56,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552555781] [2020-10-06 00:04:56,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:04:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:04:56,688 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:56,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552555781] [2020-10-06 00:04:56,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081244795] [2020-10-06 00:04:56,689 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:04:56,753 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 00:04:56,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:04:56,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-06 00:04:56,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:04:56,788 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:56,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:04:56,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2020-10-06 00:04:56,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1488343972] [2020-10-06 00:04:56,789 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:04:56,790 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:04:56,799 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 46 transitions. [2020-10-06 00:04:56,800 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:04:56,811 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:04:56,811 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:04:56,850 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [62115#(and (<= ~j~0 28) (< ~i~0 46))] [2020-10-06 00:04:56,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-06 00:04:56,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:04:56,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-06 00:04:56,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2020-10-06 00:04:56,852 INFO L87 Difference]: Start difference. First operand 103 states and 264 transitions. Second operand 29 states. [2020-10-06 00:04:59,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:04:59,025 INFO L93 Difference]: Finished difference Result 123 states and 307 transitions. [2020-10-06 00:04:59,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-06 00:04:59,026 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 32 [2020-10-06 00:04:59,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:04:59,026 INFO L225 Difference]: With dead ends: 123 [2020-10-06 00:04:59,026 INFO L226 Difference]: Without dead ends: 117 [2020-10-06 00:04:59,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1521 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1692, Invalid=4008, Unknown=0, NotChecked=0, Total=5700 [2020-10-06 00:04:59,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-06 00:04:59,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 105. [2020-10-06 00:04:59,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-06 00:04:59,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 272 transitions. [2020-10-06 00:04:59,029 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 272 transitions. Word has length 32 [2020-10-06 00:04:59,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:04:59,029 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 272 transitions. [2020-10-06 00:04:59,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-06 00:04:59,030 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 272 transitions. [2020-10-06 00:04:59,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-06 00:04:59,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:04:59,030 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:04:59,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155,154 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:04:59,231 INFO L427 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:04:59,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:04:59,232 INFO L82 PathProgramCache]: Analyzing trace with hash 726978798, now seen corresponding path program 155 times [2020-10-06 00:04:59,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:04:59,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672093583] [2020-10-06 00:04:59,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:04:59,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:04:59,675 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:59,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672093583] [2020-10-06 00:04:59,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621559917] [2020-10-06 00:04:59,676 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:04:59,734 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-10-06 00:04:59,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:04:59,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-06 00:04:59,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:04:59,770 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:04:59,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:04:59,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2020-10-06 00:04:59,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [536632970] [2020-10-06 00:04:59,771 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:04:59,773 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:04:59,782 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 46 transitions. [2020-10-06 00:04:59,782 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:04:59,793 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:04:59,794 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:04:59,831 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [62664#(and (<= ~j~0 30) (< ~i~0 46))] [2020-10-06 00:04:59,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-06 00:04:59,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:04:59,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-06 00:04:59,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2020-10-06 00:04:59,833 INFO L87 Difference]: Start difference. First operand 105 states and 272 transitions. Second operand 29 states. [2020-10-06 00:05:02,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:05:02,082 INFO L93 Difference]: Finished difference Result 123 states and 315 transitions. [2020-10-06 00:05:02,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-06 00:05:02,083 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 32 [2020-10-06 00:05:02,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:05:02,083 INFO L225 Difference]: With dead ends: 123 [2020-10-06 00:05:02,083 INFO L226 Difference]: Without dead ends: 111 [2020-10-06 00:05:02,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1640 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1860, Invalid=4146, Unknown=0, NotChecked=0, Total=6006 [2020-10-06 00:05:02,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-06 00:05:02,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 78. [2020-10-06 00:05:02,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-06 00:05:02,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 192 transitions. [2020-10-06 00:05:02,086 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 192 transitions. Word has length 32 [2020-10-06 00:05:02,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:05:02,086 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 192 transitions. [2020-10-06 00:05:02,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-06 00:05:02,086 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 192 transitions. [2020-10-06 00:05:02,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-06 00:05:02,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:05:02,086 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:05:02,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2020-10-06 00:05:02,287 INFO L427 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:05:02,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:05:02,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1801619636, now seen corresponding path program 156 times [2020-10-06 00:05:02,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:05:02,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451663660] [2020-10-06 00:05:02,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:05:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:05:02,881 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:05:02,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451663660] [2020-10-06 00:05:02,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778804531] [2020-10-06 00:05:02,881 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:05:02,944 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-10-06 00:05:02,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:05:02,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-06 00:05:02,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:05:02,960 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:05:02,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:05:02,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-10-06 00:05:02,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1741961481] [2020-10-06 00:05:02,961 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:05:02,963 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:05:02,973 INFO L258 McrAutomatonBuilder]: Finished intersection with 43 states and 53 transitions. [2020-10-06 00:05:02,973 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:05:02,977 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:05:02,977 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:05:03,015 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:05:03,015 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:05:03,052 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:05:03,052 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:05:03,080 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:05:03,080 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:05:03,089 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [63167#(and (<= ~j~0 4) (< ~i~0 46))] [2020-10-06 00:05:03,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-06 00:05:03,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:05:03,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-06 00:05:03,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=656, Unknown=0, NotChecked=0, Total=870 [2020-10-06 00:05:03,091 INFO L87 Difference]: Start difference. First operand 78 states and 192 transitions. Second operand 30 states. [2020-10-06 00:05:04,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:05:04,219 INFO L93 Difference]: Finished difference Result 120 states and 280 transitions. [2020-10-06 00:05:04,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-06 00:05:04,220 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 33 [2020-10-06 00:05:04,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:05:04,221 INFO L225 Difference]: With dead ends: 120 [2020-10-06 00:05:04,221 INFO L226 Difference]: Without dead ends: 114 [2020-10-06 00:05:04,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=940, Invalid=2252, Unknown=0, NotChecked=0, Total=3192 [2020-10-06 00:05:04,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-06 00:05:04,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 86. [2020-10-06 00:05:04,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-06 00:05:04,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 212 transitions. [2020-10-06 00:05:04,223 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 212 transitions. Word has length 33 [2020-10-06 00:05:04,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:05:04,224 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 212 transitions. [2020-10-06 00:05:04,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-06 00:05:04,224 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 212 transitions. [2020-10-06 00:05:04,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-06 00:05:04,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:05:04,224 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:05:04,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:05:04,425 INFO L427 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:05:04,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:05:04,426 INFO L82 PathProgramCache]: Analyzing trace with hash -750635858, now seen corresponding path program 157 times [2020-10-06 00:05:04,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:05:04,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139839175] [2020-10-06 00:05:04,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:05:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:05:05,053 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:05:05,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139839175] [2020-10-06 00:05:05,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704145533] [2020-10-06 00:05:05,054 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:05:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:05:05,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-06 00:05:05,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:05:05,129 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:05:05,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:05:05,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-10-06 00:05:05,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1017875761] [2020-10-06 00:05:05,130 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:05:05,132 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:05:05,141 INFO L258 McrAutomatonBuilder]: Finished intersection with 39 states and 43 transitions. [2020-10-06 00:05:05,141 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:05:05,152 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:05:05,153 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:05:05,191 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [63639#(and (<= ~j~0 6) (< ~i~0 46))] [2020-10-06 00:05:05,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-06 00:05:05,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:05:05,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-06 00:05:05,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=679, Unknown=0, NotChecked=0, Total=870 [2020-10-06 00:05:05,192 INFO L87 Difference]: Start difference. First operand 86 states and 212 transitions. Second operand 30 states. [2020-10-06 00:05:06,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:05:06,414 INFO L93 Difference]: Finished difference Result 172 states and 386 transitions. [2020-10-06 00:05:06,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-06 00:05:06,415 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 33 [2020-10-06 00:05:06,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:05:06,415 INFO L225 Difference]: With dead ends: 172 [2020-10-06 00:05:06,415 INFO L226 Difference]: Without dead ends: 166 [2020-10-06 00:05:06,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1005, Invalid=2655, Unknown=0, NotChecked=0, Total=3660 [2020-10-06 00:05:06,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-06 00:05:06,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 88. [2020-10-06 00:05:06,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-06 00:05:06,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 218 transitions. [2020-10-06 00:05:06,418 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 218 transitions. Word has length 33 [2020-10-06 00:05:06,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:05:06,418 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 218 transitions. [2020-10-06 00:05:06,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-06 00:05:06,418 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 218 transitions. [2020-10-06 00:05:06,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-06 00:05:06,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:05:06,419 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:05:06,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2020-10-06 00:05:06,620 INFO L427 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:05:06,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:05:06,620 INFO L82 PathProgramCache]: Analyzing trace with hash 895148688, now seen corresponding path program 158 times [2020-10-06 00:05:06,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:05:06,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544319071] [2020-10-06 00:05:06,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:05:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:05:07,195 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:05:07,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544319071] [2020-10-06 00:05:07,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223677400] [2020-10-06 00:05:07,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:05:07,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:05:07,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:05:07,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-06 00:05:07,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:05:07,274 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:05:07,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:05:07,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-10-06 00:05:07,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1619463881] [2020-10-06 00:05:07,275 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:05:07,276 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:05:07,287 INFO L258 McrAutomatonBuilder]: Finished intersection with 39 states and 43 transitions. [2020-10-06 00:05:07,287 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:05:07,292 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:05:07,292 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:05:07,341 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [64175#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-06 00:05:07,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-06 00:05:07,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:05:07,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-06 00:05:07,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=698, Unknown=0, NotChecked=0, Total=870 [2020-10-06 00:05:07,342 INFO L87 Difference]: Start difference. First operand 88 states and 218 transitions. Second operand 30 states. [2020-10-06 00:05:08,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:05:08,693 INFO L93 Difference]: Finished difference Result 169 states and 382 transitions. [2020-10-06 00:05:08,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-06 00:05:08,694 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 33 [2020-10-06 00:05:08,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:05:08,695 INFO L225 Difference]: With dead ends: 169 [2020-10-06 00:05:08,695 INFO L226 Difference]: Without dead ends: 163 [2020-10-06 00:05:08,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 832 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1028, Invalid=2878, Unknown=0, NotChecked=0, Total=3906 [2020-10-06 00:05:08,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-06 00:05:08,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 90. [2020-10-06 00:05:08,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-06 00:05:08,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 224 transitions. [2020-10-06 00:05:08,698 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 224 transitions. Word has length 33 [2020-10-06 00:05:08,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:05:08,699 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 224 transitions. [2020-10-06 00:05:08,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-06 00:05:08,699 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 224 transitions. [2020-10-06 00:05:08,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-06 00:05:08,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:05:08,699 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:05:08,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,158 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:05:08,900 INFO L427 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:05:08,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:05:08,900 INFO L82 PathProgramCache]: Analyzing trace with hash 271163634, now seen corresponding path program 159 times [2020-10-06 00:05:08,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:05:08,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652065944] [2020-10-06 00:05:08,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:05:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:05:09,434 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:05:09,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652065944] [2020-10-06 00:05:09,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984355719] [2020-10-06 00:05:09,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:05:09,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-10-06 00:05:09,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:05:09,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-06 00:05:09,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:05:09,515 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:05:09,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:05:09,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-10-06 00:05:09,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2112698595] [2020-10-06 00:05:09,515 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:05:09,517 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:05:09,525 INFO L258 McrAutomatonBuilder]: Finished intersection with 39 states and 43 transitions. [2020-10-06 00:05:09,525 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:05:09,527 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:05:09,528 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:05:09,575 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [64716#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-06 00:05:09,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-06 00:05:09,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:05:09,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-06 00:05:09,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=713, Unknown=0, NotChecked=0, Total=870 [2020-10-06 00:05:09,576 INFO L87 Difference]: Start difference. First operand 90 states and 224 transitions. Second operand 30 states. [2020-10-06 00:05:10,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:05:10,980 INFO L93 Difference]: Finished difference Result 167 states and 380 transitions. [2020-10-06 00:05:10,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-06 00:05:10,981 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 33 [2020-10-06 00:05:10,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:05:10,982 INFO L225 Difference]: With dead ends: 167 [2020-10-06 00:05:10,982 INFO L226 Difference]: Without dead ends: 161 [2020-10-06 00:05:10,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1067, Invalid=3093, Unknown=0, NotChecked=0, Total=4160 [2020-10-06 00:05:10,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-06 00:05:10,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 92. [2020-10-06 00:05:10,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-06 00:05:10,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 230 transitions. [2020-10-06 00:05:10,986 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 230 transitions. Word has length 33 [2020-10-06 00:05:10,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:05:10,987 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 230 transitions. [2020-10-06 00:05:10,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-06 00:05:10,987 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 230 transitions. [2020-10-06 00:05:10,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-06 00:05:10,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:05:10,987 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:05:11,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable160 [2020-10-06 00:05:11,197 INFO L427 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:05:11,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:05:11,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1660456916, now seen corresponding path program 160 times [2020-10-06 00:05:11,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:05:11,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711355734] [2020-10-06 00:05:11,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:05:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:05:11,727 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:05:11,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711355734] [2020-10-06 00:05:11,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533845885] [2020-10-06 00:05:11,728 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:05:11,781 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 00:05:11,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:05:11,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-06 00:05:11,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:05:11,804 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:05:11,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:05:11,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-10-06 00:05:11,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2081189337] [2020-10-06 00:05:11,805 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:05:11,807 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:05:11,814 INFO L258 McrAutomatonBuilder]: Finished intersection with 39 states and 43 transitions. [2020-10-06 00:05:11,814 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:05:11,819 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:05:11,819 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:05:11,864 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [65263#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-06 00:05:11,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-06 00:05:11,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:05:11,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-06 00:05:11,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=724, Unknown=0, NotChecked=0, Total=870 [2020-10-06 00:05:11,865 INFO L87 Difference]: Start difference. First operand 92 states and 230 transitions. Second operand 30 states. [2020-10-06 00:05:13,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:05:13,383 INFO L93 Difference]: Finished difference Result 165 states and 378 transitions. [2020-10-06 00:05:13,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-06 00:05:13,384 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 33 [2020-10-06 00:05:13,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:05:13,385 INFO L225 Difference]: With dead ends: 165 [2020-10-06 00:05:13,385 INFO L226 Difference]: Without dead ends: 159 [2020-10-06 00:05:13,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1033 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1122, Invalid=3300, Unknown=0, NotChecked=0, Total=4422 [2020-10-06 00:05:13,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-06 00:05:13,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 94. [2020-10-06 00:05:13,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-06 00:05:13,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 236 transitions. [2020-10-06 00:05:13,388 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 236 transitions. Word has length 33 [2020-10-06 00:05:13,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:05:13,389 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 236 transitions. [2020-10-06 00:05:13,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-06 00:05:13,389 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 236 transitions. [2020-10-06 00:05:13,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-06 00:05:13,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:05:13,389 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:05:13,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,160 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:05:13,597 INFO L427 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:05:13,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:05:13,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1189490890, now seen corresponding path program 161 times [2020-10-06 00:05:13,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:05:13,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946758264] [2020-10-06 00:05:13,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:05:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:05:14,097 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:05:14,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946758264] [2020-10-06 00:05:14,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949512181] [2020-10-06 00:05:14,098 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:05:14,157 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2020-10-06 00:05:14,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:05:14,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-06 00:05:14,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:05:14,180 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:05:14,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:05:14,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-10-06 00:05:14,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1184690268] [2020-10-06 00:05:14,181 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:05:14,183 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:05:14,190 INFO L258 McrAutomatonBuilder]: Finished intersection with 39 states and 43 transitions. [2020-10-06 00:05:14,190 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:05:14,200 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:05:14,201 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:05:14,238 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [65816#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-06 00:05:14,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-06 00:05:14,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:05:14,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-06 00:05:14,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2020-10-06 00:05:14,239 INFO L87 Difference]: Start difference. First operand 94 states and 236 transitions. Second operand 30 states. [2020-10-06 00:05:15,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:05:15,853 INFO L93 Difference]: Finished difference Result 163 states and 376 transitions. [2020-10-06 00:05:15,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-06 00:05:15,853 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 33 [2020-10-06 00:05:15,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:05:15,854 INFO L225 Difference]: With dead ends: 163 [2020-10-06 00:05:15,854 INFO L226 Difference]: Without dead ends: 157 [2020-10-06 00:05:15,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1141 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1193, Invalid=3499, Unknown=0, NotChecked=0, Total=4692 [2020-10-06 00:05:15,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-06 00:05:15,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 96. [2020-10-06 00:05:15,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-06 00:05:15,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 242 transitions. [2020-10-06 00:05:15,857 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 242 transitions. Word has length 33 [2020-10-06 00:05:15,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:05:15,858 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 242 transitions. [2020-10-06 00:05:15,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-06 00:05:15,858 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 242 transitions. [2020-10-06 00:05:15,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-06 00:05:15,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:05:15,858 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:05:16,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,161 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:05:16,059 INFO L427 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:05:16,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:05:16,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1947762920, now seen corresponding path program 162 times [2020-10-06 00:05:16,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:05:16,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367967105] [2020-10-06 00:05:16,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:05:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:05:16,562 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:05:16,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367967105] [2020-10-06 00:05:16,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022498151] [2020-10-06 00:05:16,563 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/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 [2020-10-06 00:05:16,622 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-10-06 00:05:16,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:05:16,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-06 00:05:16,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:05:16,649 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:05:16,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:05:16,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-10-06 00:05:16,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1166710768] [2020-10-06 00:05:16,650 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:05:16,652 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:05:16,661 INFO L258 McrAutomatonBuilder]: Finished intersection with 39 states and 43 transitions. [2020-10-06 00:05:16,661 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:05:16,670 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:05:16,671 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:05:16,712 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [66375#(and (<= ~j~0 16) (< ~i~0 46))] [2020-10-06 00:05:16,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-06 00:05:16,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:05:16,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-06 00:05:16,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2020-10-06 00:05:16,713 INFO L87 Difference]: Start difference. First operand 96 states and 242 transitions. Second operand 30 states. Received shutdown request... [2020-10-06 00:05:18,496 WARN L210 SmtUtils]: Removed 3 from assertion stack [2020-10-06 00:05:18,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-06 00:05:18,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,162 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:05:18,698 WARN L544 AbstractCegarLoop]: Verification canceled [2020-10-06 00:05:18,702 WARN L228 ceAbstractionStarter]: Timeout [2020-10-06 00:05:18,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 12:05:18 BasicIcfg [2020-10-06 00:05:18,703 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-06 00:05:18,705 INFO L168 Benchmark]: Toolchain (without parser) took 252302.04 ms. Allocated memory was 140.0 MB in the beginning and 291.5 MB in the end (delta: 151.5 MB). Free memory was 101.4 MB in the beginning and 91.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 161.3 MB. Max. memory is 7.1 GB. [2020-10-06 00:05:18,705 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-06 00:05:18,706 INFO L168 Benchmark]: CACSL2BoogieTranslator took 703.50 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 101.2 MB in the beginning and 162.7 MB in the end (delta: -61.5 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-10-06 00:05:18,706 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.16 ms. Allocated memory is still 203.4 MB. Free memory was 162.7 MB in the beginning and 160.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-06 00:05:18,707 INFO L168 Benchmark]: Boogie Preprocessor took 26.54 ms. Allocated memory is still 203.4 MB. Free memory was 160.8 MB in the beginning and 159.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-06 00:05:18,707 INFO L168 Benchmark]: RCFGBuilder took 368.92 ms. Allocated memory is still 203.4 MB. Free memory was 159.5 MB in the beginning and 139.1 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-10-06 00:05:18,708 INFO L168 Benchmark]: TraceAbstraction took 251148.80 ms. Allocated memory was 203.4 MB in the beginning and 291.5 MB in the end (delta: 88.1 MB). Free memory was 138.5 MB in the beginning and 91.6 MB in the end (delta: 46.9 MB). Peak memory consumption was 135.0 MB. Max. memory is 7.1 GB. [2020-10-06 00:05:18,710 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 703.50 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 101.2 MB in the beginning and 162.7 MB in the end (delta: -61.5 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.16 ms. Allocated memory is still 203.4 MB. Free memory was 162.7 MB in the beginning and 160.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.54 ms. Allocated memory is still 203.4 MB. Free memory was 160.8 MB in the beginning and 159.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 368.92 ms. Allocated memory is still 203.4 MB. Free memory was 159.5 MB in the beginning and 139.1 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 251148.80 ms. Allocated memory was 203.4 MB in the beginning and 291.5 MB in the end (delta: 88.1 MB). Free memory was 138.5 MB in the beginning and 91.6 MB in the end (delta: 46.9 MB). Peak memory consumption was 135.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.2s, 57 ProgramPointsBefore, 20 ProgramPointsAfterwards, 55 TransitionsBefore, 15 TransitionsAfterwards, 924 CoEnabledTransitionPairs, 6 FixpointIterations, 12 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 486 VarBasedMoverChecksPositive, 13 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 851 CheckedPairsTotal, 42 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 703]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 703). Cancelled while BasicCegarLoop was constructing difference of abstraction (96states) and FLOYD_HOARE automaton (currently 43 states, 30 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 12ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 251.0s, OverallIterations: 164, TraceHistogramMax: 13, AutomataDifference: 150.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 2319 SDtfs, 10588 SDslu, 20468 SDs, 0 SdLazy, 22781 SolverSat, 14390 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12306 GetRequests, 4492 SyntacticMatches, 197 SemanticMatches, 7616 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99402 ImplicationChecksByTransitivity, 160.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=156, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 163 MinimizatonAttempts, 5077 StatesRemovedByMinimization, 162 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.3s SsaConstructionTime, 4.3s SatisfiabilityAnalysisTime, 45.3s InterpolantComputationTime, 7988 NumberOfCodeBlocks, 7988 NumberOfCodeBlocksAsserted, 999 NumberOfCheckSat, 7663 ConstructedInterpolants, 0 QuantifiedInterpolants, 904239 SizeOfPredicates, 2694 NumberOfNonLiveVariables, 23774 ConjunctsInSsa, 3338 ConjunctsInUnsatCore, 325 InterpolantComputations, 3 PerfectInterpolantSequences, 0/22608 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