/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-b09bf87 [2020-10-16 12:30:41,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:30:41,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:30:41,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:30:41,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:30:41,088 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:30:41,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:30:41,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:30:41,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:30:41,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:30:41,101 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:30:41,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:30:41,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:30:41,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:30:41,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:30:41,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:30:41,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:30:41,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:30:41,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:30:41,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:30:41,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:30:41,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:30:41,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:30:41,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:30:41,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 12:30:41,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:30:41,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:30:41,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:30:41,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:30:41,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:30:41,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:30:41,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:30:41,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:30:41,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:30:41,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:30:41,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:30:41,148 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 12:30:41,171 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:30:41,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:30:41,173 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:30:41,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:30:41,173 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:30:41,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:30:41,174 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:30:41,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:30:41,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:30:41,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:30:41,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:30:41,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:30:41,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:30:41,175 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:30:41,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:30:41,175 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:30:41,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:30:41,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:30:41,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:30:41,176 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:30:41,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:30:41,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:30:41,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:30:41,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:30:41,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:30:41,177 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:30:41,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:30:41,177 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 12:30:41,178 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:30:41,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:30:41,178 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 12:30:41,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:30:41,518 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:30:41,522 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:30:41,524 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:30:41,525 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:30:41,527 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-2.i [2020-10-16 12:30:41,603 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7835e536/657f341b90014e34ab858d02dfc4d884/FLAG7d638d9b6 [2020-10-16 12:30:42,132 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:30:42,133 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread/triangular-longest-2.i [2020-10-16 12:30:42,151 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7835e536/657f341b90014e34ab858d02dfc4d884/FLAG7d638d9b6 [2020-10-16 12:30:42,417 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7835e536/657f341b90014e34ab858d02dfc4d884 [2020-10-16 12:30:42,428 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:30:42,430 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:30:42,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:30:42,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:30:42,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:30:42,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:30:42" (1/1) ... [2020-10-16 12:30:42,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f018203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:42, skipping insertion in model container [2020-10-16 12:30:42,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:30:42" (1/1) ... [2020-10-16 12:30:42,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:30:42,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:30:43,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:30:43,030 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:30:43,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:30:43,182 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:30:43,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:43 WrapperNode [2020-10-16 12:30:43,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:30:43,183 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:30:43,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:30:43,184 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:30:43,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:43" (1/1) ... [2020-10-16 12:30:43,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:43" (1/1) ... [2020-10-16 12:30:43,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:30:43,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:30:43,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:30:43,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:30:43,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:43" (1/1) ... [2020-10-16 12:30:43,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:43" (1/1) ... [2020-10-16 12:30:43,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:43" (1/1) ... [2020-10-16 12:30:43,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:43" (1/1) ... [2020-10-16 12:30:43,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:43" (1/1) ... [2020-10-16 12:30:43,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:43" (1/1) ... [2020-10-16 12:30:43,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:43" (1/1) ... [2020-10-16 12:30:43,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:30:43,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:30:43,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:30:43,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:30:43,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:30:43,326 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-16 12:30:43,326 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-16 12:30:43,326 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-16 12:30:43,327 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-16 12:30:43,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:30:43,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 12:30:43,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:30:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:30:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 12:30:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:30:43,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:30:43,330 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 12:30:43,702 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:30:43,702 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-16 12:30:43,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:30:43 BoogieIcfgContainer [2020-10-16 12:30:43,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:30:43,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:30:43,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:30:43,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:30:43,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:30:42" (1/3) ... [2020-10-16 12:30:43,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a16de9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:30:43, skipping insertion in model container [2020-10-16 12:30:43,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:43" (2/3) ... [2020-10-16 12:30:43,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a16de9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:30:43, skipping insertion in model container [2020-10-16 12:30:43,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:30:43" (3/3) ... [2020-10-16 12:30:43,715 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2020-10-16 12:30:43,727 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:30:43,727 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:30:43,734 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 12:30:43,735 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:30:43,765 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,765 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,765 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,766 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,766 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,766 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,767 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,767 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,767 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,767 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,768 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,768 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,768 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,768 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,769 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,769 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,769 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,770 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,770 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,770 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,771 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,771 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,771 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,771 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,772 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,772 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,772 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,772 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,776 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,777 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,777 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,777 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,777 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,777 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,783 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,783 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,784 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,784 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,784 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,784 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:43,789 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:30:43,800 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-16 12:30:43,820 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:30:43,821 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:30:43,821 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:30:43,821 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 12:30:43,821 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:30:43,822 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:30:43,822 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:30:43,822 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:30:43,833 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:30:43,834 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 55 transitions, 120 flow [2020-10-16 12:30:43,837 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 55 transitions, 120 flow [2020-10-16 12:30:43,839 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 57 places, 55 transitions, 120 flow [2020-10-16 12:30:43,879 INFO L129 PetriNetUnfolder]: 5/53 cut-off events. [2020-10-16 12:30:43,879 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 12:30:43,885 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. [2020-10-16 12:30:43,888 INFO L117 LiptonReduction]: Number of co-enabled transitions 924 [2020-10-16 12:30:45,074 INFO L132 LiptonReduction]: Checked pairs total: 911 [2020-10-16 12:30:45,074 INFO L134 LiptonReduction]: Total number of compositions: 45 [2020-10-16 12:30:45,083 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 15 transitions, 40 flow [2020-10-16 12:30:45,095 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-16 12:30:45,098 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-16 12:30:45,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-16 12:30:45,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:45,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 12:30:45,107 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:45,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:45,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1798862799, now seen corresponding path program 1 times [2020-10-16 12:30:45,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:45,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646900254] [2020-10-16 12:30:45,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:45,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:45,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646900254] [2020-10-16 12:30:45,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:30:45,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:30:45,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2111204731] [2020-10-16 12:30:45,356 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:45,359 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:45,373 INFO L258 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-10-16 12:30:45,373 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:45,378 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:45,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:30:45,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:45,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:30:45,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:30:45,410 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-10-16 12:30:45,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:45,472 INFO L93 Difference]: Finished difference Result 75 states and 190 transitions. [2020-10-16 12:30:45,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:30:45,474 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-16 12:30:45,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:45,485 INFO L225 Difference]: With dead ends: 75 [2020-10-16 12:30:45,485 INFO L226 Difference]: Without dead ends: 42 [2020-10-16 12:30:45,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:30:45,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-16 12:30:45,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-16 12:30:45,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-16 12:30:45,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 98 transitions. [2020-10-16 12:30:45,530 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 98 transitions. Word has length 6 [2020-10-16 12:30:45,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:45,531 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 98 transitions. [2020-10-16 12:30:45,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:30:45,531 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 98 transitions. [2020-10-16 12:30:45,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:30:45,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:45,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:45,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:30:45,533 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:45,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:45,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1777031324, now seen corresponding path program 1 times [2020-10-16 12:30:45,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:45,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636477108] [2020-10-16 12:30:45,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:45,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:45,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636477108] [2020-10-16 12:30:45,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:30:45,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:30:45,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [322882347] [2020-10-16 12:30:45,623 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:45,624 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:45,627 INFO L258 McrAutomatonBuilder]: Finished intersection with 13 states and 16 transitions. [2020-10-16 12:30:45,628 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:45,651 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:45,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:30:45,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:45,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:30:45,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:30:45,654 INFO L87 Difference]: Start difference. First operand 42 states and 98 transitions. Second operand 5 states. [2020-10-16 12:30:45,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:45,694 INFO L93 Difference]: Finished difference Result 56 states and 130 transitions. [2020-10-16 12:30:45,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:30:45,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-16 12:30:45,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:45,696 INFO L225 Difference]: With dead ends: 56 [2020-10-16 12:30:45,696 INFO L226 Difference]: Without dead ends: 50 [2020-10-16 12:30:45,697 INFO L677 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 [2020-10-16 12:30:45,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-16 12:30:45,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2020-10-16 12:30:45,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-16 12:30:45,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 100 transitions. [2020-10-16 12:30:45,706 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 100 transitions. Word has length 8 [2020-10-16 12:30:45,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:45,707 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 100 transitions. [2020-10-16 12:30:45,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:30:45,707 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 100 transitions. [2020-10-16 12:30:45,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:30:45,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:45,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:45,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:30:45,709 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:45,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:45,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1669374595, now seen corresponding path program 1 times [2020-10-16 12:30:45,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:45,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904200233] [2020-10-16 12:30:45,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:45,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:45,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:45,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904200233] [2020-10-16 12:30:45,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:30:45,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 12:30:45,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1644270238] [2020-10-16 12:30:45,792 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:45,793 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:45,797 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-10-16 12:30:45,797 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:45,821 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:45,822 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:45,846 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [466#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-16 12:30:45,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:30:45,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:45,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:30:45,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:30:45,848 INFO L87 Difference]: Start difference. First operand 42 states and 100 transitions. Second operand 7 states. [2020-10-16 12:30:45,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:45,962 INFO L93 Difference]: Finished difference Result 62 states and 148 transitions. [2020-10-16 12:30:45,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 12:30:45,963 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-10-16 12:30:45,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:45,964 INFO L225 Difference]: With dead ends: 62 [2020-10-16 12:30:45,964 INFO L226 Difference]: Without dead ends: 44 [2020-10-16 12:30:45,965 INFO L677 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 [2020-10-16 12:30:45,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-16 12:30:45,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2020-10-16 12:30:45,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-16 12:30:45,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 82 transitions. [2020-10-16 12:30:45,971 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 82 transitions. Word has length 10 [2020-10-16 12:30:45,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:45,972 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 82 transitions. [2020-10-16 12:30:45,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:30:45,972 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 82 transitions. [2020-10-16 12:30:45,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:30:45,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:45,973 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:45,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 12:30:45,973 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:45,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:45,974 INFO L82 PathProgramCache]: Analyzing trace with hash 976950295, now seen corresponding path program 2 times [2020-10-16 12:30:45,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:45,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046311089] [2020-10-16 12:30:45,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:46,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:46,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046311089] [2020-10-16 12:30:46,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730347161] [2020-10-16 12:30:46,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:46,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:30:46,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:46,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 12:30:46,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:46,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:46,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:46,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-16 12:30:46,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1217895264] [2020-10-16 12:30:46,150 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:46,151 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:46,154 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 31 transitions. [2020-10-16 12:30:46,154 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:46,161 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:46,162 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:46,180 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:46,180 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:46,199 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:46,200 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:46,215 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:46,215 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:46,234 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [644#(and (<= ~j~0 4) (< ~i~0 46))] [2020-10-16 12:30:46,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:30:46,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:46,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:30:46,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-16 12:30:46,236 INFO L87 Difference]: Start difference. First operand 34 states and 82 transitions. Second operand 8 states. [2020-10-16 12:30:46,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:46,373 INFO L93 Difference]: Finished difference Result 56 states and 131 transitions. [2020-10-16 12:30:46,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:30:46,374 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-16 12:30:46,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:46,375 INFO L225 Difference]: With dead ends: 56 [2020-10-16 12:30:46,375 INFO L226 Difference]: Without dead ends: 50 [2020-10-16 12:30:46,376 INFO L677 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 [2020-10-16 12:30:46,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-16 12:30:46,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2020-10-16 12:30:46,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-16 12:30:46,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 104 transitions. [2020-10-16 12:30:46,382 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 104 transitions. Word has length 11 [2020-10-16 12:30:46,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:46,383 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 104 transitions. [2020-10-16 12:30:46,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:30:46,383 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 104 transitions. [2020-10-16 12:30:46,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:30:46,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:46,384 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:46,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:46,598 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:46,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:46,599 INFO L82 PathProgramCache]: Analyzing trace with hash 993527545, now seen corresponding path program 3 times [2020-10-16 12:30:46,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:46,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178432519] [2020-10-16 12:30:46,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:46,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:46,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178432519] [2020-10-16 12:30:46,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042988078] [2020-10-16 12:30:46,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:46,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:30:46,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:46,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 12:30:46,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:46,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:46,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:46,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-16 12:30:46,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1650410618] [2020-10-16 12:30:46,769 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:46,770 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:46,772 INFO L258 McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions. [2020-10-16 12:30:46,773 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:46,789 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:46,790 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:46,806 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [832#(and (<= ~j~0 6) (< ~i~0 46))] [2020-10-16 12:30:46,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:30:46,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:46,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:30:46,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-16 12:30:46,808 INFO L87 Difference]: Start difference. First operand 42 states and 104 transitions. Second operand 8 states. [2020-10-16 12:30:46,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:46,991 INFO L93 Difference]: Finished difference Result 66 states and 159 transitions. [2020-10-16 12:30:46,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:30:46,992 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-16 12:30:46,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:46,993 INFO L225 Difference]: With dead ends: 66 [2020-10-16 12:30:46,994 INFO L226 Difference]: Without dead ends: 54 [2020-10-16 12:30:46,994 INFO L677 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 [2020-10-16 12:30:46,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-16 12:30:47,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 38. [2020-10-16 12:30:47,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-16 12:30:47,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 91 transitions. [2020-10-16 12:30:47,007 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 91 transitions. Word has length 11 [2020-10-16 12:30:47,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:47,008 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 91 transitions. [2020-10-16 12:30:47,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:30:47,008 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 91 transitions. [2020-10-16 12:30:47,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:30:47,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:47,009 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:47,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:47,224 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:47,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:47,226 INFO L82 PathProgramCache]: Analyzing trace with hash -2048766974, now seen corresponding path program 4 times [2020-10-16 12:30:47,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:47,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945176483] [2020-10-16 12:30:47,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:47,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:47,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945176483] [2020-10-16 12:30:47,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885713813] [2020-10-16 12:30:47,303 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:47,358 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:30:47,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:47,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:30:47,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:47,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:47,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:47,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-16 12:30:47,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1775855679] [2020-10-16 12:30:47,383 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:47,385 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:47,388 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-16 12:30:47,388 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:47,402 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:47,403 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:47,424 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1034#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-16 12:30:47,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:30:47,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:47,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:30:47,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-16 12:30:47,425 INFO L87 Difference]: Start difference. First operand 38 states and 91 transitions. Second operand 9 states. [2020-10-16 12:30:47,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:47,575 INFO L93 Difference]: Finished difference Result 64 states and 149 transitions. [2020-10-16 12:30:47,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:30:47,576 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-16 12:30:47,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:47,577 INFO L225 Difference]: With dead ends: 64 [2020-10-16 12:30:47,578 INFO L226 Difference]: Without dead ends: 58 [2020-10-16 12:30:47,578 INFO L677 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 [2020-10-16 12:30:47,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-16 12:30:47,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 45. [2020-10-16 12:30:47,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-16 12:30:47,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 112 transitions. [2020-10-16 12:30:47,585 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 112 transitions. Word has length 12 [2020-10-16 12:30:47,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:47,585 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 112 transitions. [2020-10-16 12:30:47,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:30:47,585 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 112 transitions. [2020-10-16 12:30:47,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:30:47,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:47,586 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:47,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:47,801 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:47,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:47,802 INFO L82 PathProgramCache]: Analyzing trace with hash -2032189724, now seen corresponding path program 5 times [2020-10-16 12:30:47,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:47,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639017123] [2020-10-16 12:30:47,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:47,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:47,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639017123] [2020-10-16 12:30:47,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037328190] [2020-10-16 12:30:47,868 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:47,932 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:30:47,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:47,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:30:47,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:47,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:47,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:47,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-16 12:30:47,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1815333545] [2020-10-16 12:30:47,953 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:47,955 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:47,957 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-10-16 12:30:47,958 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:47,973 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:47,973 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:48,000 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1244#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-16 12:30:48,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:30:48,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:48,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:30:48,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-16 12:30:48,001 INFO L87 Difference]: Start difference. First operand 45 states and 112 transitions. Second operand 9 states. [2020-10-16 12:30:48,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:48,218 INFO L93 Difference]: Finished difference Result 63 states and 155 transitions. [2020-10-16 12:30:48,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:30:48,219 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-16 12:30:48,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:48,220 INFO L225 Difference]: With dead ends: 63 [2020-10-16 12:30:48,220 INFO L226 Difference]: Without dead ends: 51 [2020-10-16 12:30:48,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:30:48,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-16 12:30:48,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 38. [2020-10-16 12:30:48,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-16 12:30:48,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 92 transitions. [2020-10-16 12:30:48,230 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 92 transitions. Word has length 12 [2020-10-16 12:30:48,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:48,230 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 92 transitions. [2020-10-16 12:30:48,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:30:48,230 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 92 transitions. [2020-10-16 12:30:48,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:30:48,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:48,232 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:48,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:48,433 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:48,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:48,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1748588394, now seen corresponding path program 6 times [2020-10-16 12:30:48,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:48,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030877885] [2020-10-16 12:30:48,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:48,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:48,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030877885] [2020-10-16 12:30:48,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735102668] [2020-10-16 12:30:48,515 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:48,575 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:30:48,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:48,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:30:48,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:48,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:48,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:48,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-16 12:30:48,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [488216036] [2020-10-16 12:30:48,607 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:48,608 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:48,612 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 33 transitions. [2020-10-16 12:30:48,612 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:48,631 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:48,632 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:48,652 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:48,652 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:48,671 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:48,672 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:48,681 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:48,681 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:48,690 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1447#(and (<= ~j~0 4) (< ~i~0 46))] [2020-10-16 12:30:48,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:30:48,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:48,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:30:48,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-16 12:30:48,691 INFO L87 Difference]: Start difference. First operand 38 states and 92 transitions. Second operand 10 states. [2020-10-16 12:30:48,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:48,858 INFO L93 Difference]: Finished difference Result 60 states and 140 transitions. [2020-10-16 12:30:48,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:30:48,859 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:30:48,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:48,860 INFO L225 Difference]: With dead ends: 60 [2020-10-16 12:30:48,860 INFO L226 Difference]: Without dead ends: 54 [2020-10-16 12:30:48,861 INFO L677 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 [2020-10-16 12:30:48,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-16 12:30:48,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 46. [2020-10-16 12:30:48,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-16 12:30:48,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 112 transitions. [2020-10-16 12:30:48,866 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 112 transitions. Word has length 13 [2020-10-16 12:30:48,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:48,866 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 112 transitions. [2020-10-16 12:30:48,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:30:48,867 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 112 transitions. [2020-10-16 12:30:48,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:30:48,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:48,868 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:49,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:49,080 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:49,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:49,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1297246968, now seen corresponding path program 7 times [2020-10-16 12:30:49,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:49,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161986518] [2020-10-16 12:30:49,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:49,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:49,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161986518] [2020-10-16 12:30:49,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122780311] [2020-10-16 12:30:49,152 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:49,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:30:49,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:49,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:49,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:49,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-16 12:30:49,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [415738908] [2020-10-16 12:30:49,225 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:49,226 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:49,229 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-10-16 12:30:49,230 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:49,244 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:49,245 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:49,262 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1659#(and (<= ~j~0 6) (< ~i~0 46))] [2020-10-16 12:30:49,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:30:49,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:49,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:30:49,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-16 12:30:49,263 INFO L87 Difference]: Start difference. First operand 46 states and 112 transitions. Second operand 10 states. [2020-10-16 12:30:49,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:49,513 INFO L93 Difference]: Finished difference Result 74 states and 171 transitions. [2020-10-16 12:30:49,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:30:49,514 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:30:49,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:49,515 INFO L225 Difference]: With dead ends: 74 [2020-10-16 12:30:49,515 INFO L226 Difference]: Without dead ends: 68 [2020-10-16 12:30:49,515 INFO L677 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 [2020-10-16 12:30:49,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-16 12:30:49,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 48. [2020-10-16 12:30:49,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-16 12:30:49,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 120 transitions. [2020-10-16 12:30:49,521 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 120 transitions. Word has length 13 [2020-10-16 12:30:49,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:49,521 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 120 transitions. [2020-10-16 12:30:49,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:30:49,521 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 120 transitions. [2020-10-16 12:30:49,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:30:49,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:49,522 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:49,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:49,723 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:49,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:49,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1313824218, now seen corresponding path program 8 times [2020-10-16 12:30:49,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:49,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283662416] [2020-10-16 12:30:49,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:49,830 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:49,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283662416] [2020-10-16 12:30:49,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955058256] [2020-10-16 12:30:49,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:49,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:30:49,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:49,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:30:49,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:49,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:49,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:49,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-16 12:30:49,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [353107684] [2020-10-16 12:30:49,941 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:49,945 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:49,949 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-10-16 12:30:49,950 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:49,965 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:49,966 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:49,995 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1897#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-16 12:30:49,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:30:49,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:49,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:30:49,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-16 12:30:49,996 INFO L87 Difference]: Start difference. First operand 48 states and 120 transitions. Second operand 10 states. [2020-10-16 12:30:50,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:50,287 INFO L93 Difference]: Finished difference Result 74 states and 179 transitions. [2020-10-16 12:30:50,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:30:50,288 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:30:50,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:50,289 INFO L225 Difference]: With dead ends: 74 [2020-10-16 12:30:50,290 INFO L226 Difference]: Without dead ends: 62 [2020-10-16 12:30:50,290 INFO L677 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 [2020-10-16 12:30:50,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-16 12:30:50,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 42. [2020-10-16 12:30:50,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-16 12:30:50,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 101 transitions. [2020-10-16 12:30:50,301 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 101 transitions. Word has length 13 [2020-10-16 12:30:50,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:50,301 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 101 transitions. [2020-10-16 12:30:50,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:30:50,301 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 101 transitions. [2020-10-16 12:30:50,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:30:50,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:50,302 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:50,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-16 12:30:50,518 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:50,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:50,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1770024511, now seen corresponding path program 9 times [2020-10-16 12:30:50,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:50,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725620267] [2020-10-16 12:30:50,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:50,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:50,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725620267] [2020-10-16 12:30:50,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993878217] [2020-10-16 12:30:50,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:50,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:30:50,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:50,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:30:50,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:50,679 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:50,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:50,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-10-16 12:30:50,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1578195137] [2020-10-16 12:30:50,680 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:50,681 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:50,684 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:30:50,684 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:50,705 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:50,705 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:50,735 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2131#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-16 12:30:50,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:30:50,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:50,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:30:50,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-16 12:30:50,736 INFO L87 Difference]: Start difference. First operand 42 states and 101 transitions. Second operand 11 states. [2020-10-16 12:30:50,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:50,941 INFO L93 Difference]: Finished difference Result 70 states and 162 transitions. [2020-10-16 12:30:50,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:30:50,942 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:30:50,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:50,943 INFO L225 Difference]: With dead ends: 70 [2020-10-16 12:30:50,943 INFO L226 Difference]: Without dead ends: 64 [2020-10-16 12:30:50,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:30:50,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-16 12:30:50,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 49. [2020-10-16 12:30:50,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-16 12:30:50,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 120 transitions. [2020-10-16 12:30:50,953 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 120 transitions. Word has length 14 [2020-10-16 12:30:50,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:50,953 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 120 transitions. [2020-10-16 12:30:50,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:30:50,953 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 120 transitions. [2020-10-16 12:30:50,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:30:50,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:50,954 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:51,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-16 12:30:51,167 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:51,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:51,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1275810851, now seen corresponding path program 10 times [2020-10-16 12:30:51,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:51,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937624067] [2020-10-16 12:30:51,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:51,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:51,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937624067] [2020-10-16 12:30:51,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334121514] [2020-10-16 12:30:51,247 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:51,296 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:30:51,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:51,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:30:51,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:51,313 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:51,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:51,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-10-16 12:30:51,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [723109994] [2020-10-16 12:30:51,314 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:51,315 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:51,318 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-10-16 12:30:51,318 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:51,329 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:51,329 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:51,343 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2367#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-16 12:30:51,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:30:51,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:51,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:30:51,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-16 12:30:51,345 INFO L87 Difference]: Start difference. First operand 49 states and 120 transitions. Second operand 11 states. [2020-10-16 12:30:51,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:51,591 INFO L93 Difference]: Finished difference Result 69 states and 163 transitions. [2020-10-16 12:30:51,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:30:51,592 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:30:51,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:51,593 INFO L225 Difference]: With dead ends: 69 [2020-10-16 12:30:51,593 INFO L226 Difference]: Without dead ends: 63 [2020-10-16 12:30:51,594 INFO L677 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 [2020-10-16 12:30:51,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-16 12:30:51,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 51. [2020-10-16 12:30:51,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-16 12:30:51,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 128 transitions. [2020-10-16 12:30:51,598 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 128 transitions. Word has length 14 [2020-10-16 12:30:51,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:51,598 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 128 transitions. [2020-10-16 12:30:51,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:30:51,599 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 128 transitions. [2020-10-16 12:30:51,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:30:51,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:51,600 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:51,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:51,810 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:51,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:51,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1292388101, now seen corresponding path program 11 times [2020-10-16 12:30:51,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:51,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334700877] [2020-10-16 12:30:51,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:51,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:51,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:51,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334700877] [2020-10-16 12:30:51,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190602618] [2020-10-16 12:30:51,883 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:51,940 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:30:51,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:51,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:30:51,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:51,960 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:51,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:51,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-10-16 12:30:51,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [571978086] [2020-10-16 12:30:51,961 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:51,962 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:51,964 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-10-16 12:30:51,965 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:51,977 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:51,978 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:51,993 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2610#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-16 12:30:51,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:30:51,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:51,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:30:51,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-16 12:30:51,995 INFO L87 Difference]: Start difference. First operand 51 states and 128 transitions. Second operand 11 states. [2020-10-16 12:30:52,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:52,328 INFO L93 Difference]: Finished difference Result 69 states and 171 transitions. [2020-10-16 12:30:52,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:30:52,329 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:30:52,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:52,330 INFO L225 Difference]: With dead ends: 69 [2020-10-16 12:30:52,330 INFO L226 Difference]: Without dead ends: 57 [2020-10-16 12:30:52,331 INFO L677 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 [2020-10-16 12:30:52,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-16 12:30:52,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 42. [2020-10-16 12:30:52,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-16 12:30:52,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 102 transitions. [2020-10-16 12:30:52,334 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 102 transitions. Word has length 14 [2020-10-16 12:30:52,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:52,335 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 102 transitions. [2020-10-16 12:30:52,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:30:52,335 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 102 transitions. [2020-10-16 12:30:52,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:30:52,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:52,336 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:52,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:52,547 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:52,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:52,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1061217963, now seen corresponding path program 12 times [2020-10-16 12:30:52,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:52,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426347746] [2020-10-16 12:30:52,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:52,634 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:52,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426347746] [2020-10-16 12:30:52,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801002490] [2020-10-16 12:30:52,635 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:52,685 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-16 12:30:52,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:52,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:30:52,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:52,699 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:52,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:52,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-10-16 12:30:52,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [923067937] [2020-10-16 12:30:52,700 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:52,701 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:52,704 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:30:52,705 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:52,714 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:52,715 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:52,730 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:52,731 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:52,743 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:52,743 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:52,751 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:52,751 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:52,760 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2843#(and (<= ~j~0 4) (< ~i~0 46))] [2020-10-16 12:30:52,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:30:52,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:52,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:30:52,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:30:52,761 INFO L87 Difference]: Start difference. First operand 42 states and 102 transitions. Second operand 12 states. [2020-10-16 12:30:52,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:52,970 INFO L93 Difference]: Finished difference Result 66 states and 154 transitions. [2020-10-16 12:30:52,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:30:52,970 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:30:52,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:52,972 INFO L225 Difference]: With dead ends: 66 [2020-10-16 12:30:52,972 INFO L226 Difference]: Without dead ends: 60 [2020-10-16 12:30:52,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:30:52,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-16 12:30:52,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2020-10-16 12:30:52,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-16 12:30:52,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 122 transitions. [2020-10-16 12:30:52,976 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 122 transitions. Word has length 15 [2020-10-16 12:30:52,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:52,977 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 122 transitions. [2020-10-16 12:30:52,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:30:52,977 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 122 transitions. [2020-10-16 12:30:52,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:30:52,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:52,978 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:53,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-16 12:30:53,188 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:53,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:53,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1113836343, now seen corresponding path program 13 times [2020-10-16 12:30:53,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:53,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280626479] [2020-10-16 12:30:53,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:53,278 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:53,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280626479] [2020-10-16 12:30:53,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15154740] [2020-10-16 12:30:53,279 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:53,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:30:53,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:53,343 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:53,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:53,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-10-16 12:30:53,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [261351409] [2020-10-16 12:30:53,345 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:53,346 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:53,348 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 25 transitions. [2020-10-16 12:30:53,349 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:53,365 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:53,366 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:53,394 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3081#(and (<= ~j~0 6) (< ~i~0 46))] [2020-10-16 12:30:53,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:30:53,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:53,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:30:53,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:30:53,395 INFO L87 Difference]: Start difference. First operand 50 states and 122 transitions. Second operand 12 states. [2020-10-16 12:30:53,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:53,686 INFO L93 Difference]: Finished difference Result 82 states and 188 transitions. [2020-10-16 12:30:53,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:30:53,687 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:30:53,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:53,687 INFO L225 Difference]: With dead ends: 82 [2020-10-16 12:30:53,688 INFO L226 Difference]: Without dead ends: 76 [2020-10-16 12:30:53,688 INFO L677 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 [2020-10-16 12:30:53,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-16 12:30:53,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 52. [2020-10-16 12:30:53,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-16 12:30:53,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 128 transitions. [2020-10-16 12:30:53,697 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 128 transitions. Word has length 15 [2020-10-16 12:30:53,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:53,698 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 128 transitions. [2020-10-16 12:30:53,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:30:53,698 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 128 transitions. [2020-10-16 12:30:53,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:30:53,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:53,699 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:53,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-16 12:30:53,910 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:53,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:53,911 INFO L82 PathProgramCache]: Analyzing trace with hash -135295591, now seen corresponding path program 14 times [2020-10-16 12:30:53,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:53,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478536469] [2020-10-16 12:30:53,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:53,998 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:53,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478536469] [2020-10-16 12:30:53,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799843581] [2020-10-16 12:30:53,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:54,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:30:54,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:54,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:30:54,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:54,076 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:54,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:54,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-10-16 12:30:54,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2049923414] [2020-10-16 12:30:54,077 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:54,078 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:54,081 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 25 transitions. [2020-10-16 12:30:54,081 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:54,089 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:54,089 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:54,113 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3347#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-16 12:30:54,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:30:54,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:54,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:30:54,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:30:54,114 INFO L87 Difference]: Start difference. First operand 52 states and 128 transitions. Second operand 12 states. [2020-10-16 12:30:54,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:54,431 INFO L93 Difference]: Finished difference Result 81 states and 189 transitions. [2020-10-16 12:30:54,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 12:30:54,431 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:30:54,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:54,432 INFO L225 Difference]: With dead ends: 81 [2020-10-16 12:30:54,432 INFO L226 Difference]: Without dead ends: 75 [2020-10-16 12:30:54,433 INFO L677 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 [2020-10-16 12:30:54,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-16 12:30:54,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 54. [2020-10-16 12:30:54,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-16 12:30:54,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 136 transitions. [2020-10-16 12:30:54,437 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 136 transitions. Word has length 15 [2020-10-16 12:30:54,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:54,437 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 136 transitions. [2020-10-16 12:30:54,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:30:54,437 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 136 transitions. [2020-10-16 12:30:54,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:30:54,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:54,438 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:54,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-16 12:30:54,647 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:54,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:54,647 INFO L82 PathProgramCache]: Analyzing trace with hash -118718341, now seen corresponding path program 15 times [2020-10-16 12:30:54,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:54,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432373262] [2020-10-16 12:30:54,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:54,718 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:54,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432373262] [2020-10-16 12:30:54,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865279188] [2020-10-16 12:30:54,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:54,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 12:30:54,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:54,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:30:54,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:54,786 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:54,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:54,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-10-16 12:30:54,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1270902261] [2020-10-16 12:30:54,787 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:54,788 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:54,790 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 25 transitions. [2020-10-16 12:30:54,790 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:54,791 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:54,792 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:54,816 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3620#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-16 12:30:54,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:30:54,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:54,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:30:54,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:30:54,817 INFO L87 Difference]: Start difference. First operand 54 states and 136 transitions. Second operand 12 states. [2020-10-16 12:30:55,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:55,215 INFO L93 Difference]: Finished difference Result 82 states and 199 transitions. [2020-10-16 12:30:55,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-16 12:30:55,220 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:30:55,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:55,221 INFO L225 Difference]: With dead ends: 82 [2020-10-16 12:30:55,221 INFO L226 Difference]: Without dead ends: 70 [2020-10-16 12:30:55,222 INFO L677 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 [2020-10-16 12:30:55,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-16 12:30:55,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 46. [2020-10-16 12:30:55,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-16 12:30:55,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 111 transitions. [2020-10-16 12:30:55,225 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 111 transitions. Word has length 15 [2020-10-16 12:30:55,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:55,225 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 111 transitions. [2020-10-16 12:30:55,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:30:55,226 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 111 transitions. [2020-10-16 12:30:55,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-16 12:30:55,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:55,226 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:55,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:55,434 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:55,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:55,434 INFO L82 PathProgramCache]: Analyzing trace with hash -186489920, now seen corresponding path program 16 times [2020-10-16 12:30:55,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:55,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231686975] [2020-10-16 12:30:55,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:55,565 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:55,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231686975] [2020-10-16 12:30:55,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445090779] [2020-10-16 12:30:55,566 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:55,606 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:30:55,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:55,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:30:55,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:55,634 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:55,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:55,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-10-16 12:30:55,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1560543366] [2020-10-16 12:30:55,636 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:55,638 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:55,641 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 32 transitions. [2020-10-16 12:30:55,642 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:55,648 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:55,649 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:55,675 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3886#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-16 12:30:55,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:30:55,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:55,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:30:55,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:30:55,676 INFO L87 Difference]: Start difference. First operand 46 states and 111 transitions. Second operand 13 states. [2020-10-16 12:30:55,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:55,905 INFO L93 Difference]: Finished difference Result 78 states and 180 transitions. [2020-10-16 12:30:55,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:30:55,905 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-10-16 12:30:55,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:55,906 INFO L225 Difference]: With dead ends: 78 [2020-10-16 12:30:55,906 INFO L226 Difference]: Without dead ends: 72 [2020-10-16 12:30:55,907 INFO L677 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 [2020-10-16 12:30:55,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-16 12:30:55,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 53. [2020-10-16 12:30:55,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-16 12:30:55,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 130 transitions. [2020-10-16 12:30:55,911 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 130 transitions. Word has length 16 [2020-10-16 12:30:55,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:55,912 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 130 transitions. [2020-10-16 12:30:55,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:30:55,912 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 130 transitions. [2020-10-16 12:30:55,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-16 12:30:55,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:55,912 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:56,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-16 12:30:56,116 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:56,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:56,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1988564386, now seen corresponding path program 17 times [2020-10-16 12:30:56,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:56,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737073946] [2020-10-16 12:30:56,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:56,203 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:56,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737073946] [2020-10-16 12:30:56,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980327345] [2020-10-16 12:30:56,204 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:56,259 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-16 12:30:56,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:56,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:30:56,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:56,288 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:56,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:56,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-10-16 12:30:56,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [834396378] [2020-10-16 12:30:56,290 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:56,292 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:56,295 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 30 transitions. [2020-10-16 12:30:56,296 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:56,299 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:56,299 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:56,334 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4150#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-16 12:30:56,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:30:56,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:56,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:30:56,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:30:56,335 INFO L87 Difference]: Start difference. First operand 53 states and 130 transitions. Second operand 13 states. [2020-10-16 12:30:56,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:56,672 INFO L93 Difference]: Finished difference Result 75 states and 176 transitions. [2020-10-16 12:30:56,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:30:56,673 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-10-16 12:30:56,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:56,674 INFO L225 Difference]: With dead ends: 75 [2020-10-16 12:30:56,674 INFO L226 Difference]: Without dead ends: 69 [2020-10-16 12:30:56,675 INFO L677 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 [2020-10-16 12:30:56,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-16 12:30:56,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 55. [2020-10-16 12:30:56,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-16 12:30:56,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 136 transitions. [2020-10-16 12:30:56,678 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 136 transitions. Word has length 16 [2020-10-16 12:30:56,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:56,679 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 136 transitions. [2020-10-16 12:30:56,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:30:56,679 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 136 transitions. [2020-10-16 12:30:56,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-16 12:30:56,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:56,680 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:56,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:56,889 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:56,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:56,890 INFO L82 PathProgramCache]: Analyzing trace with hash 739432452, now seen corresponding path program 18 times [2020-10-16 12:30:56,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:56,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560453383] [2020-10-16 12:30:56,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:56,978 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:56,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560453383] [2020-10-16 12:30:56,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849090285] [2020-10-16 12:30:56,979 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:57,021 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-16 12:30:57,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:57,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:30:57,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:57,036 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:57,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:57,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-10-16 12:30:57,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1403958399] [2020-10-16 12:30:57,037 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:57,039 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:57,041 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 30 transitions. [2020-10-16 12:30:57,042 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:57,046 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:57,046 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:57,076 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4419#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-16 12:30:57,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:30:57,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:57,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:30:57,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:30:57,077 INFO L87 Difference]: Start difference. First operand 55 states and 136 transitions. Second operand 13 states. [2020-10-16 12:30:57,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:57,404 INFO L93 Difference]: Finished difference Result 75 states and 179 transitions. [2020-10-16 12:30:57,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 12:30:57,409 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-10-16 12:30:57,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:57,410 INFO L225 Difference]: With dead ends: 75 [2020-10-16 12:30:57,410 INFO L226 Difference]: Without dead ends: 69 [2020-10-16 12:30:57,411 INFO L677 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 [2020-10-16 12:30:57,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-16 12:30:57,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 57. [2020-10-16 12:30:57,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-16 12:30:57,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 144 transitions. [2020-10-16 12:30:57,414 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 144 transitions. Word has length 16 [2020-10-16 12:30:57,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:57,414 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 144 transitions. [2020-10-16 12:30:57,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:30:57,414 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 144 transitions. [2020-10-16 12:30:57,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-16 12:30:57,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:57,415 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:57,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:57,626 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:57,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:57,626 INFO L82 PathProgramCache]: Analyzing trace with hash 756009702, now seen corresponding path program 19 times [2020-10-16 12:30:57,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:57,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877436033] [2020-10-16 12:30:57,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:57,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:57,698 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:57,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877436033] [2020-10-16 12:30:57,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488490870] [2020-10-16 12:30:57,699 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:57,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:30:57,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:57,784 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:57,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:57,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-10-16 12:30:57,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1827088295] [2020-10-16 12:30:57,785 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:57,786 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:57,788 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 30 transitions. [2020-10-16 12:30:57,789 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:57,791 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:57,791 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:57,814 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4696#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-16 12:30:57,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:30:57,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:57,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:30:57,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:30:57,816 INFO L87 Difference]: Start difference. First operand 57 states and 144 transitions. Second operand 13 states. [2020-10-16 12:30:58,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:58,206 INFO L93 Difference]: Finished difference Result 75 states and 187 transitions. [2020-10-16 12:30:58,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-16 12:30:58,207 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-10-16 12:30:58,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:58,208 INFO L225 Difference]: With dead ends: 75 [2020-10-16 12:30:58,208 INFO L226 Difference]: Without dead ends: 63 [2020-10-16 12:30:58,209 INFO L677 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 [2020-10-16 12:30:58,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-16 12:30:58,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 46. [2020-10-16 12:30:58,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-16 12:30:58,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 112 transitions. [2020-10-16 12:30:58,212 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 112 transitions. Word has length 16 [2020-10-16 12:30:58,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:58,213 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 112 transitions. [2020-10-16 12:30:58,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:30:58,213 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 112 transitions. [2020-10-16 12:30:58,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:30:58,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:58,213 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:58,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-16 12:30:58,415 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:58,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:58,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1923197356, now seen corresponding path program 20 times [2020-10-16 12:30:58,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:58,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907822770] [2020-10-16 12:30:58,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:58,556 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:58,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907822770] [2020-10-16 12:30:58,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792852834] [2020-10-16 12:30:58,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:58,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:30:58,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:58,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-16 12:30:58,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:58,654 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:58,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:58,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-10-16 12:30:58,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1914584140] [2020-10-16 12:30:58,655 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:58,658 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:58,662 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 37 transitions. [2020-10-16 12:30:58,662 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:58,673 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:58,673 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:58,696 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:58,697 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:58,709 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:58,710 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:58,719 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:58,720 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:58,726 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4959#(and (<= ~j~0 4) (< ~i~0 46))] [2020-10-16 12:30:58,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 12:30:58,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:58,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 12:30:58,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:30:58,728 INFO L87 Difference]: Start difference. First operand 46 states and 112 transitions. Second operand 14 states. [2020-10-16 12:30:58,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:58,990 INFO L93 Difference]: Finished difference Result 72 states and 168 transitions. [2020-10-16 12:30:58,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:30:58,991 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-10-16 12:30:58,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:58,992 INFO L225 Difference]: With dead ends: 72 [2020-10-16 12:30:58,992 INFO L226 Difference]: Without dead ends: 66 [2020-10-16 12:30:58,993 INFO L677 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 [2020-10-16 12:30:58,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-16 12:30:58,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-10-16 12:30:58,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-16 12:30:58,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 132 transitions. [2020-10-16 12:30:58,995 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 132 transitions. Word has length 17 [2020-10-16 12:30:58,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:58,996 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 132 transitions. [2020-10-16 12:30:58,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 12:30:58,996 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 132 transitions. [2020-10-16 12:30:58,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:30:58,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:58,996 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:59,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:59,197 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:59,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:59,198 INFO L82 PathProgramCache]: Analyzing trace with hash 949884854, now seen corresponding path program 21 times [2020-10-16 12:30:59,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:59,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879245516] [2020-10-16 12:30:59,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:59,296 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:59,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879245516] [2020-10-16 12:30:59,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231023] [2020-10-16 12:30:59,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:59,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-16 12:30:59,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:59,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-16 12:30:59,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:59,371 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:59,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:59,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-10-16 12:30:59,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1045905127] [2020-10-16 12:30:59,372 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:59,374 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:59,376 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 27 transitions. [2020-10-16 12:30:59,377 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:59,378 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:59,379 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:59,415 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [5223#(and (<= ~j~0 6) (< ~i~0 46))] [2020-10-16 12:30:59,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 12:30:59,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:59,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 12:30:59,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:30:59,416 INFO L87 Difference]: Start difference. First operand 54 states and 132 transitions. Second operand 14 states. [2020-10-16 12:30:59,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:59,767 INFO L93 Difference]: Finished difference Result 92 states and 210 transitions. [2020-10-16 12:30:59,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 12:30:59,767 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-10-16 12:30:59,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:59,768 INFO L225 Difference]: With dead ends: 92 [2020-10-16 12:30:59,769 INFO L226 Difference]: Without dead ends: 86 [2020-10-16 12:30:59,769 INFO L677 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 [2020-10-16 12:30:59,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-16 12:30:59,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 56. [2020-10-16 12:30:59,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-16 12:30:59,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 138 transitions. [2020-10-16 12:30:59,772 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 138 transitions. Word has length 17 [2020-10-16 12:30:59,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:59,773 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 138 transitions. [2020-10-16 12:30:59,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 12:30:59,773 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 138 transitions. [2020-10-16 12:30:59,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:30:59,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:59,774 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:59,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-16 12:30:59,984 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:59,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:59,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1170028136, now seen corresponding path program 22 times [2020-10-16 12:30:59,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:59,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652367747] [2020-10-16 12:30:59,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:00,094 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:00,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652367747] [2020-10-16 12:31:00,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759487738] [2020-10-16 12:31:00,095 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:00,143 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:31:00,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:00,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-16 12:31:00,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:00,159 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:00,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:00,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-10-16 12:31:00,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [723966291] [2020-10-16 12:31:00,160 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:00,162 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:00,164 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 27 transitions. [2020-10-16 12:31:00,165 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:00,174 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:00,175 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:00,196 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [5519#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-16 12:31:00,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 12:31:00,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:00,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 12:31:00,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:31:00,197 INFO L87 Difference]: Start difference. First operand 56 states and 138 transitions. Second operand 14 states. [2020-10-16 12:31:00,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:00,569 INFO L93 Difference]: Finished difference Result 89 states and 206 transitions. [2020-10-16 12:31:00,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-16 12:31:00,569 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-10-16 12:31:00,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:00,570 INFO L225 Difference]: With dead ends: 89 [2020-10-16 12:31:00,570 INFO L226 Difference]: Without dead ends: 83 [2020-10-16 12:31:00,571 INFO L677 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 [2020-10-16 12:31:00,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-16 12:31:00,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 58. [2020-10-16 12:31:00,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-16 12:31:00,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 144 transitions. [2020-10-16 12:31:00,574 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 144 transitions. Word has length 17 [2020-10-16 12:31:00,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:00,574 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 144 transitions. [2020-10-16 12:31:00,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 12:31:00,574 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 144 transitions. [2020-10-16 12:31:00,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:31:00,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:00,575 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:00,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-16 12:31:00,784 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:00,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:00,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1875807226, now seen corresponding path program 23 times [2020-10-16 12:31:00,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:00,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385518846] [2020-10-16 12:31:00,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:00,869 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:00,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385518846] [2020-10-16 12:31:00,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345500004] [2020-10-16 12:31:00,870 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:00,918 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-10-16 12:31:00,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:00,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-16 12:31:00,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:00,959 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:00,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:00,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-10-16 12:31:00,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [664308326] [2020-10-16 12:31:00,960 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:00,962 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:00,965 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 27 transitions. [2020-10-16 12:31:00,965 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:00,966 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:00,966 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:00,997 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [5820#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-16 12:31:00,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 12:31:00,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:00,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 12:31:00,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:31:00,998 INFO L87 Difference]: Start difference. First operand 58 states and 144 transitions. Second operand 14 states. [2020-10-16 12:31:01,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:01,432 INFO L93 Difference]: Finished difference Result 89 states and 209 transitions. [2020-10-16 12:31:01,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-16 12:31:01,433 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-10-16 12:31:01,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:01,434 INFO L225 Difference]: With dead ends: 89 [2020-10-16 12:31:01,434 INFO L226 Difference]: Without dead ends: 83 [2020-10-16 12:31:01,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=315, Invalid=741, Unknown=0, NotChecked=0, Total=1056 [2020-10-16 12:31:01,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-16 12:31:01,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 60. [2020-10-16 12:31:01,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-16 12:31:01,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 152 transitions. [2020-10-16 12:31:01,438 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 152 transitions. Word has length 17 [2020-10-16 12:31:01,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:01,439 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 152 transitions. [2020-10-16 12:31:01,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 12:31:01,439 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 152 transitions. [2020-10-16 12:31:01,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:31:01,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:01,439 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:01,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:01,650 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:01,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:01,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1892384476, now seen corresponding path program 24 times [2020-10-16 12:31:01,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:01,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049517945] [2020-10-16 12:31:01,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:01,756 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:01,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049517945] [2020-10-16 12:31:01,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428683954] [2020-10-16 12:31:01,757 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:01,805 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-10-16 12:31:01,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:01,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-16 12:31:01,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:01,823 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:01,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:01,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-10-16 12:31:01,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [701481138] [2020-10-16 12:31:01,824 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:01,825 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:01,828 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 27 transitions. [2020-10-16 12:31:01,828 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:01,829 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:01,829 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:01,856 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [6129#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-16 12:31:01,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 12:31:01,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:01,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 12:31:01,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:31:01,857 INFO L87 Difference]: Start difference. First operand 60 states and 152 transitions. Second operand 14 states. [2020-10-16 12:31:02,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:02,336 INFO L93 Difference]: Finished difference Result 90 states and 219 transitions. [2020-10-16 12:31:02,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-16 12:31:02,336 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-10-16 12:31:02,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:02,337 INFO L225 Difference]: With dead ends: 90 [2020-10-16 12:31:02,337 INFO L226 Difference]: Without dead ends: 78 [2020-10-16 12:31:02,338 INFO L677 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 [2020-10-16 12:31:02,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-16 12:31:02,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 50. [2020-10-16 12:31:02,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-16 12:31:02,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 121 transitions. [2020-10-16 12:31:02,340 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 121 transitions. Word has length 17 [2020-10-16 12:31:02,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:02,341 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 121 transitions. [2020-10-16 12:31:02,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 12:31:02,341 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 121 transitions. [2020-10-16 12:31:02,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 12:31:02,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:02,343 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:02,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-16 12:31:02,552 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:02,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:02,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1171829247, now seen corresponding path program 25 times [2020-10-16 12:31:02,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:02,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375215508] [2020-10-16 12:31:02,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:02,672 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:02,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375215508] [2020-10-16 12:31:02,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46998875] [2020-10-16 12:31:02,673 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:02,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-16 12:31:02,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:02,745 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:02,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:02,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-10-16 12:31:02,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [46302665] [2020-10-16 12:31:02,746 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:02,747 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:02,750 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 34 transitions. [2020-10-16 12:31:02,750 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:02,760 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:02,761 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:02,778 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [6427#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-16 12:31:02,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 12:31:02,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:02,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 12:31:02,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:31:02,779 INFO L87 Difference]: Start difference. First operand 50 states and 121 transitions. Second operand 15 states. [2020-10-16 12:31:03,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:03,080 INFO L93 Difference]: Finished difference Result 86 states and 198 transitions. [2020-10-16 12:31:03,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:31:03,081 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-10-16 12:31:03,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:03,082 INFO L225 Difference]: With dead ends: 86 [2020-10-16 12:31:03,082 INFO L226 Difference]: Without dead ends: 80 [2020-10-16 12:31:03,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:31:03,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-16 12:31:03,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 57. [2020-10-16 12:31:03,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-16 12:31:03,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 140 transitions. [2020-10-16 12:31:03,086 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 140 transitions. Word has length 18 [2020-10-16 12:31:03,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:03,086 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 140 transitions. [2020-10-16 12:31:03,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 12:31:03,086 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 140 transitions. [2020-10-16 12:31:03,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 12:31:03,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:03,087 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:03,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:03,290 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:03,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:03,290 INFO L82 PathProgramCache]: Analyzing trace with hash -250055839, now seen corresponding path program 26 times [2020-10-16 12:31:03,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:03,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428329412] [2020-10-16 12:31:03,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:03,424 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:03,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428329412] [2020-10-16 12:31:03,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282651553] [2020-10-16 12:31:03,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:03,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:31:03,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:03,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-16 12:31:03,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:03,498 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:03,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:03,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-10-16 12:31:03,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1130674466] [2020-10-16 12:31:03,499 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:03,501 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:03,504 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 32 transitions. [2020-10-16 12:31:03,504 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:03,516 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:03,516 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:03,535 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [6719#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-16 12:31:03,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 12:31:03,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:03,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 12:31:03,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:31:03,536 INFO L87 Difference]: Start difference. First operand 57 states and 140 transitions. Second operand 15 states. [2020-10-16 12:31:03,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:03,899 INFO L93 Difference]: Finished difference Result 83 states and 194 transitions. [2020-10-16 12:31:03,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 12:31:03,900 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-10-16 12:31:03,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:03,901 INFO L225 Difference]: With dead ends: 83 [2020-10-16 12:31:03,901 INFO L226 Difference]: Without dead ends: 77 [2020-10-16 12:31:03,902 INFO L677 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 [2020-10-16 12:31:03,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-16 12:31:03,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 59. [2020-10-16 12:31:03,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-16 12:31:03,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 146 transitions. [2020-10-16 12:31:03,905 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 146 transitions. Word has length 18 [2020-10-16 12:31:03,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:03,905 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 146 transitions. [2020-10-16 12:31:03,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 12:31:03,906 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 146 transitions. [2020-10-16 12:31:03,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 12:31:03,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:03,906 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:04,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-16 12:31:04,114 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:04,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:04,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1924998467, now seen corresponding path program 27 times [2020-10-16 12:31:04,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:04,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043870326] [2020-10-16 12:31:04,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:04,232 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:04,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043870326] [2020-10-16 12:31:04,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724487111] [2020-10-16 12:31:04,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:04,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-16 12:31:04,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:04,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-16 12:31:04,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:04,317 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:04,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:04,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-10-16 12:31:04,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [149656449] [2020-10-16 12:31:04,318 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:04,319 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:04,323 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 32 transitions. [2020-10-16 12:31:04,323 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:04,334 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:04,334 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:04,353 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [7016#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-16 12:31:04,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 12:31:04,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:04,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 12:31:04,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:31:04,354 INFO L87 Difference]: Start difference. First operand 59 states and 146 transitions. Second operand 15 states. [2020-10-16 12:31:04,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:04,800 INFO L93 Difference]: Finished difference Result 81 states and 192 transitions. [2020-10-16 12:31:04,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-16 12:31:04,801 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-10-16 12:31:04,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:04,801 INFO L225 Difference]: With dead ends: 81 [2020-10-16 12:31:04,802 INFO L226 Difference]: Without dead ends: 75 [2020-10-16 12:31:04,802 INFO L677 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 [2020-10-16 12:31:04,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-16 12:31:04,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 61. [2020-10-16 12:31:04,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-16 12:31:04,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 152 transitions. [2020-10-16 12:31:04,807 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 152 transitions. Word has length 18 [2020-10-16 12:31:04,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:04,807 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 152 transitions. [2020-10-16 12:31:04,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 12:31:04,808 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 152 transitions. [2020-10-16 12:31:04,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 12:31:04,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:04,808 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:05,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-16 12:31:05,017 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:05,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:05,017 INFO L82 PathProgramCache]: Analyzing trace with hash 675866533, now seen corresponding path program 28 times [2020-10-16 12:31:05,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:05,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003240207] [2020-10-16 12:31:05,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:05,117 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:05,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003240207] [2020-10-16 12:31:05,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633572191] [2020-10-16 12:31:05,118 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:05,177 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:31:05,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:05,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-16 12:31:05,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:05,199 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:05,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:05,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-10-16 12:31:05,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1220228103] [2020-10-16 12:31:05,201 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:05,204 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:05,221 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 32 transitions. [2020-10-16 12:31:05,221 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:05,232 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:05,233 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:05,252 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [7319#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-16 12:31:05,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 12:31:05,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:05,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 12:31:05,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:31:05,253 INFO L87 Difference]: Start difference. First operand 61 states and 152 transitions. Second operand 15 states. [2020-10-16 12:31:05,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:05,743 INFO L93 Difference]: Finished difference Result 81 states and 195 transitions. [2020-10-16 12:31:05,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-16 12:31:05,744 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-10-16 12:31:05,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:05,745 INFO L225 Difference]: With dead ends: 81 [2020-10-16 12:31:05,745 INFO L226 Difference]: Without dead ends: 75 [2020-10-16 12:31:05,747 INFO L677 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 [2020-10-16 12:31:05,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-16 12:31:05,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2020-10-16 12:31:05,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-16 12:31:05,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 160 transitions. [2020-10-16 12:31:05,750 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 160 transitions. Word has length 18 [2020-10-16 12:31:05,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:05,751 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 160 transitions. [2020-10-16 12:31:05,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 12:31:05,751 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 160 transitions. [2020-10-16 12:31:05,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 12:31:05,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:05,752 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:05,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:05,962 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:05,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:05,962 INFO L82 PathProgramCache]: Analyzing trace with hash 692443783, now seen corresponding path program 29 times [2020-10-16 12:31:05,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:05,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575990586] [2020-10-16 12:31:05,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:06,064 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:06,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575990586] [2020-10-16 12:31:06,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277247567] [2020-10-16 12:31:06,065 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:06,121 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-10-16 12:31:06,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:06,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-16 12:31:06,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:06,156 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:06,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:06,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-10-16 12:31:06,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1825336789] [2020-10-16 12:31:06,157 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:06,158 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:06,161 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 32 transitions. [2020-10-16 12:31:06,161 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:06,172 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:06,172 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:06,192 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [7630#(and (<= ~j~0 16) (< ~i~0 46))] [2020-10-16 12:31:06,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 12:31:06,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:06,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 12:31:06,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:31:06,194 INFO L87 Difference]: Start difference. First operand 63 states and 160 transitions. Second operand 15 states. [2020-10-16 12:31:06,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:06,734 INFO L93 Difference]: Finished difference Result 81 states and 203 transitions. [2020-10-16 12:31:06,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-16 12:31:06,740 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-10-16 12:31:06,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:06,741 INFO L225 Difference]: With dead ends: 81 [2020-10-16 12:31:06,741 INFO L226 Difference]: Without dead ends: 69 [2020-10-16 12:31:06,742 INFO L677 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 [2020-10-16 12:31:06,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-16 12:31:06,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 50. [2020-10-16 12:31:06,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-16 12:31:06,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 122 transitions. [2020-10-16 12:31:06,745 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 122 transitions. Word has length 18 [2020-10-16 12:31:06,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:06,745 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 122 transitions. [2020-10-16 12:31:06,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 12:31:06,745 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 122 transitions. [2020-10-16 12:31:06,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:31:06,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:06,746 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:06,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:06,956 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:06,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:06,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1356705901, now seen corresponding path program 30 times [2020-10-16 12:31:06,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:06,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649818029] [2020-10-16 12:31:06,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:07,104 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:07,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649818029] [2020-10-16 12:31:07,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464841797] [2020-10-16 12:31:07,105 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:07,156 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-10-16 12:31:07,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:07,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-16 12:31:07,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:07,170 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:07,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:07,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-10-16 12:31:07,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1891031517] [2020-10-16 12:31:07,171 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:07,173 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:07,177 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 39 transitions. [2020-10-16 12:31:07,177 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:07,178 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:07,178 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:07,199 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:07,199 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:07,221 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:07,221 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:07,237 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:07,237 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:07,244 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [7923#(and (<= ~j~0 4) (< ~i~0 46))] [2020-10-16 12:31:07,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:31:07,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:07,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:31:07,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:31:07,247 INFO L87 Difference]: Start difference. First operand 50 states and 122 transitions. Second operand 16 states. [2020-10-16 12:31:07,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:07,556 INFO L93 Difference]: Finished difference Result 78 states and 182 transitions. [2020-10-16 12:31:07,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 12:31:07,557 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 19 [2020-10-16 12:31:07,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:07,560 INFO L225 Difference]: With dead ends: 78 [2020-10-16 12:31:07,560 INFO L226 Difference]: Without dead ends: 72 [2020-10-16 12:31:07,560 INFO L677 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 [2020-10-16 12:31:07,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-16 12:31:07,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 58. [2020-10-16 12:31:07,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-16 12:31:07,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 142 transitions. [2020-10-16 12:31:07,564 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 142 transitions. Word has length 19 [2020-10-16 12:31:07,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:07,565 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 142 transitions. [2020-10-16 12:31:07,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:31:07,565 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 142 transitions. [2020-10-16 12:31:07,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:31:07,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:07,566 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:07,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-10-16 12:31:07,780 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:07,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:07,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1988673419, now seen corresponding path program 31 times [2020-10-16 12:31:07,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:07,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120278379] [2020-10-16 12:31:07,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:07,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:07,914 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:07,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120278379] [2020-10-16 12:31:07,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665125319] [2020-10-16 12:31:07,915 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:07,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-16 12:31:07,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:07,979 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:07,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:07,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-10-16 12:31:07,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [63596122] [2020-10-16 12:31:07,980 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:07,981 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:07,985 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 29 transitions. [2020-10-16 12:31:07,985 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:07,991 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:07,991 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:08,013 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [8213#(and (<= ~j~0 6) (< ~i~0 46))] [2020-10-16 12:31:08,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:31:08,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:08,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:31:08,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:31:08,014 INFO L87 Difference]: Start difference. First operand 58 states and 142 transitions. Second operand 16 states. [2020-10-16 12:31:08,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:08,397 INFO L93 Difference]: Finished difference Result 102 states and 232 transitions. [2020-10-16 12:31:08,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-16 12:31:08,398 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 19 [2020-10-16 12:31:08,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:08,399 INFO L225 Difference]: With dead ends: 102 [2020-10-16 12:31:08,399 INFO L226 Difference]: Without dead ends: 96 [2020-10-16 12:31:08,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2020-10-16 12:31:08,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-16 12:31:08,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 60. [2020-10-16 12:31:08,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-16 12:31:08,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 148 transitions. [2020-10-16 12:31:08,404 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 148 transitions. Word has length 19 [2020-10-16 12:31:08,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:08,404 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 148 transitions. [2020-10-16 12:31:08,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:31:08,404 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 148 transitions. [2020-10-16 12:31:08,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:31:08,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:08,405 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:08,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:08,615 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:08,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:08,615 INFO L82 PathProgramCache]: Analyzing trace with hash 884408791, now seen corresponding path program 32 times [2020-10-16 12:31:08,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:08,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074515332] [2020-10-16 12:31:08,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:08,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:08,730 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:08,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074515332] [2020-10-16 12:31:08,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574560313] [2020-10-16 12:31:08,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:08,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:31:08,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:08,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-16 12:31:08,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:08,801 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:08,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:08,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-10-16 12:31:08,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [802608039] [2020-10-16 12:31:08,802 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:08,804 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:08,808 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 29 transitions. [2020-10-16 12:31:08,808 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:08,816 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:08,816 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:08,851 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [8539#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-16 12:31:08,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:31:08,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:08,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:31:08,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:31:08,852 INFO L87 Difference]: Start difference. First operand 60 states and 148 transitions. Second operand 16 states. [2020-10-16 12:31:09,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:09,266 INFO L93 Difference]: Finished difference Result 99 states and 228 transitions. [2020-10-16 12:31:09,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-16 12:31:09,267 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 19 [2020-10-16 12:31:09,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:09,269 INFO L225 Difference]: With dead ends: 99 [2020-10-16 12:31:09,269 INFO L226 Difference]: Without dead ends: 93 [2020-10-16 12:31:09,270 INFO L677 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 [2020-10-16 12:31:09,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-16 12:31:09,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 62. [2020-10-16 12:31:09,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-16 12:31:09,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 154 transitions. [2020-10-16 12:31:09,274 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 154 transitions. Word has length 19 [2020-10-16 12:31:09,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:09,274 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 154 transitions. [2020-10-16 12:31:09,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:31:09,274 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 154 transitions. [2020-10-16 12:31:09,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:31:09,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:09,275 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:09,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-10-16 12:31:09,485 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:09,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:09,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1235504199, now seen corresponding path program 33 times [2020-10-16 12:31:09,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:09,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851770183] [2020-10-16 12:31:09,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:09,659 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:09,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851770183] [2020-10-16 12:31:09,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767577012] [2020-10-16 12:31:09,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:09,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-10-16 12:31:09,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:09,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-16 12:31:09,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:09,777 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:09,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:09,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-10-16 12:31:09,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [517899513] [2020-10-16 12:31:09,778 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:09,782 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:09,787 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 29 transitions. [2020-10-16 12:31:09,788 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:09,802 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:09,802 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:09,830 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [8870#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-16 12:31:09,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:31:09,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:09,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:31:09,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:31:09,832 INFO L87 Difference]: Start difference. First operand 62 states and 154 transitions. Second operand 16 states. [2020-10-16 12:31:10,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:10,408 INFO L93 Difference]: Finished difference Result 97 states and 226 transitions. [2020-10-16 12:31:10,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-16 12:31:10,409 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 19 [2020-10-16 12:31:10,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:10,409 INFO L225 Difference]: With dead ends: 97 [2020-10-16 12:31:10,410 INFO L226 Difference]: Without dead ends: 91 [2020-10-16 12:31:10,410 INFO L677 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 [2020-10-16 12:31:10,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-16 12:31:10,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 64. [2020-10-16 12:31:10,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-16 12:31:10,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 160 transitions. [2020-10-16 12:31:10,413 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 160 transitions. Word has length 19 [2020-10-16 12:31:10,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:10,413 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 160 transitions. [2020-10-16 12:31:10,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:31:10,414 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 160 transitions. [2020-10-16 12:31:10,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:31:10,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:10,414 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:10,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-10-16 12:31:10,624 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:10,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:10,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1810331163, now seen corresponding path program 34 times [2020-10-16 12:31:10,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:10,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889543281] [2020-10-16 12:31:10,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:10,729 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:10,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889543281] [2020-10-16 12:31:10,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529486950] [2020-10-16 12:31:10,730 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:10,771 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:31:10,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:10,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-16 12:31:10,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:10,792 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:10,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:10,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-10-16 12:31:10,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [472796519] [2020-10-16 12:31:10,792 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:10,796 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:10,801 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 29 transitions. [2020-10-16 12:31:10,802 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:10,815 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:10,816 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:10,880 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [9207#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-16 12:31:10,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:31:10,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:10,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:31:10,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:31:10,882 INFO L87 Difference]: Start difference. First operand 64 states and 160 transitions. Second operand 16 states. [2020-10-16 12:31:11,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:11,593 INFO L93 Difference]: Finished difference Result 97 states and 229 transitions. [2020-10-16 12:31:11,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-16 12:31:11,594 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 19 [2020-10-16 12:31:11,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:11,595 INFO L225 Difference]: With dead ends: 97 [2020-10-16 12:31:11,595 INFO L226 Difference]: Without dead ends: 91 [2020-10-16 12:31:11,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=443, Invalid=1039, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 12:31:11,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-16 12:31:11,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 66. [2020-10-16 12:31:11,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-16 12:31:11,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 168 transitions. [2020-10-16 12:31:11,599 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 168 transitions. Word has length 19 [2020-10-16 12:31:11,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:11,599 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 168 transitions. [2020-10-16 12:31:11,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:31:11,599 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 168 transitions. [2020-10-16 12:31:11,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:31:11,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:11,600 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:11,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-16 12:31:11,809 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:11,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:11,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1826908413, now seen corresponding path program 35 times [2020-10-16 12:31:11,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:11,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815009699] [2020-10-16 12:31:11,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:11,948 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:11,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815009699] [2020-10-16 12:31:11,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533148820] [2020-10-16 12:31:11,949 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:12,002 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-16 12:31:12,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:12,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-16 12:31:12,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:12,021 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:12,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:12,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-10-16 12:31:12,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2092494560] [2020-10-16 12:31:12,022 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:12,024 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:12,027 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 29 transitions. [2020-10-16 12:31:12,027 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:12,036 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:12,037 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:12,055 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [9552#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-16 12:31:12,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:31:12,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:12,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:31:12,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:31:12,056 INFO L87 Difference]: Start difference. First operand 66 states and 168 transitions. Second operand 16 states. [2020-10-16 12:31:12,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:12,678 INFO L93 Difference]: Finished difference Result 98 states and 239 transitions. [2020-10-16 12:31:12,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-16 12:31:12,678 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 19 [2020-10-16 12:31:12,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:12,679 INFO L225 Difference]: With dead ends: 98 [2020-10-16 12:31:12,679 INFO L226 Difference]: Without dead ends: 86 [2020-10-16 12:31:12,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=526, Invalid=1114, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 12:31:12,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-16 12:31:12,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 54. [2020-10-16 12:31:12,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-16 12:31:12,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 131 transitions. [2020-10-16 12:31:12,682 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 131 transitions. Word has length 19 [2020-10-16 12:31:12,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:12,683 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 131 transitions. [2020-10-16 12:31:12,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:31:12,683 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 131 transitions. [2020-10-16 12:31:12,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-16 12:31:12,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:12,683 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:12,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-16 12:31:12,894 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:12,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:12,894 INFO L82 PathProgramCache]: Analyzing trace with hash 846490750, now seen corresponding path program 36 times [2020-10-16 12:31:12,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:12,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817142360] [2020-10-16 12:31:12,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:13,051 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:13,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817142360] [2020-10-16 12:31:13,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739922672] [2020-10-16 12:31:13,052 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:13,106 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-10-16 12:31:13,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:13,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-16 12:31:13,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:13,121 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:13,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:13,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-10-16 12:31:13,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1580084487] [2020-10-16 12:31:13,122 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:13,124 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:13,128 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 36 transitions. [2020-10-16 12:31:13,128 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:13,147 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:13,147 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:13,168 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [9882#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-16 12:31:13,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 12:31:13,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:13,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 12:31:13,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:31:13,169 INFO L87 Difference]: Start difference. First operand 54 states and 131 transitions. Second operand 17 states. [2020-10-16 12:31:13,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:13,519 INFO L93 Difference]: Finished difference Result 94 states and 216 transitions. [2020-10-16 12:31:13,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 12:31:13,519 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20 [2020-10-16 12:31:13,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:13,520 INFO L225 Difference]: With dead ends: 94 [2020-10-16 12:31:13,520 INFO L226 Difference]: Without dead ends: 88 [2020-10-16 12:31:13,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2020-10-16 12:31:13,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-16 12:31:13,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 61. [2020-10-16 12:31:13,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-16 12:31:13,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 150 transitions. [2020-10-16 12:31:13,524 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 150 transitions. Word has length 20 [2020-10-16 12:31:13,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:13,525 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 150 transitions. [2020-10-16 12:31:13,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 12:31:13,525 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 150 transitions. [2020-10-16 12:31:13,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-16 12:31:13,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:13,525 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:13,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-10-16 12:31:13,735 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:13,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:13,735 INFO L82 PathProgramCache]: Analyzing trace with hash 214523232, now seen corresponding path program 37 times [2020-10-16 12:31:13,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:13,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093383503] [2020-10-16 12:31:13,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:13,886 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:13,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093383503] [2020-10-16 12:31:13,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741388723] [2020-10-16 12:31:13,887 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:13,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-16 12:31:13,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:13,953 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:13,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:13,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-10-16 12:31:13,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1914018545] [2020-10-16 12:31:13,954 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:13,956 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:13,959 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 34 transitions. [2020-10-16 12:31:13,960 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:13,967 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:13,967 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:13,996 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [10202#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-16 12:31:13,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 12:31:13,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:13,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 12:31:13,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:31:13,998 INFO L87 Difference]: Start difference. First operand 61 states and 150 transitions. Second operand 17 states. [2020-10-16 12:31:14,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:14,409 INFO L93 Difference]: Finished difference Result 91 states and 212 transitions. [2020-10-16 12:31:14,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-16 12:31:14,410 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20 [2020-10-16 12:31:14,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:14,411 INFO L225 Difference]: With dead ends: 91 [2020-10-16 12:31:14,411 INFO L226 Difference]: Without dead ends: 85 [2020-10-16 12:31:14,412 INFO L677 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 [2020-10-16 12:31:14,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-16 12:31:14,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 63. [2020-10-16 12:31:14,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-16 12:31:14,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 156 transitions. [2020-10-16 12:31:14,415 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 156 transitions. Word has length 20 [2020-10-16 12:31:14,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:14,415 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 156 transitions. [2020-10-16 12:31:14,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 12:31:14,416 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 156 transitions. [2020-10-16 12:31:14,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-16 12:31:14,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:14,416 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:14,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-16 12:31:14,626 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:14,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:14,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1207361854, now seen corresponding path program 38 times [2020-10-16 12:31:14,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:14,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808081618] [2020-10-16 12:31:14,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:14,772 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:14,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808081618] [2020-10-16 12:31:14,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023832170] [2020-10-16 12:31:14,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:14,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:31:14,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:14,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-16 12:31:14,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:14,839 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:14,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:14,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-10-16 12:31:14,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1731945604] [2020-10-16 12:31:14,840 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:14,842 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:14,846 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 34 transitions. [2020-10-16 12:31:14,847 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:14,848 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:14,848 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:14,880 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [10527#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-16 12:31:14,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 12:31:14,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:14,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 12:31:14,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:31:14,881 INFO L87 Difference]: Start difference. First operand 63 states and 156 transitions. Second operand 17 states. [2020-10-16 12:31:15,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:15,376 INFO L93 Difference]: Finished difference Result 89 states and 210 transitions. [2020-10-16 12:31:15,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-16 12:31:15,376 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20 [2020-10-16 12:31:15,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:15,377 INFO L225 Difference]: With dead ends: 89 [2020-10-16 12:31:15,378 INFO L226 Difference]: Without dead ends: 83 [2020-10-16 12:31:15,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=332, Invalid=928, Unknown=0, NotChecked=0, Total=1260 [2020-10-16 12:31:15,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-16 12:31:15,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 65. [2020-10-16 12:31:15,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-16 12:31:15,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 162 transitions. [2020-10-16 12:31:15,381 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 162 transitions. Word has length 20 [2020-10-16 12:31:15,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:15,381 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 162 transitions. [2020-10-16 12:31:15,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 12:31:15,381 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 162 transitions. [2020-10-16 12:31:15,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-16 12:31:15,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:15,382 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:15,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-16 12:31:15,592 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:15,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:15,592 INFO L82 PathProgramCache]: Analyzing trace with hash 967692452, now seen corresponding path program 39 times [2020-10-16 12:31:15,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:15,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272097378] [2020-10-16 12:31:15,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:15,720 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:15,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272097378] [2020-10-16 12:31:15,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192856960] [2020-10-16 12:31:15,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:15,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-10-16 12:31:15,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:15,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-16 12:31:15,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:15,791 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:15,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:15,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-10-16 12:31:15,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1087555475] [2020-10-16 12:31:15,792 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:15,794 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:15,798 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 34 transitions. [2020-10-16 12:31:15,798 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:15,806 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:15,806 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:15,828 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [10858#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-16 12:31:15,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 12:31:15,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:15,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 12:31:15,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:31:15,829 INFO L87 Difference]: Start difference. First operand 65 states and 162 transitions. Second operand 17 states. [2020-10-16 12:31:16,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:16,354 INFO L93 Difference]: Finished difference Result 87 states and 208 transitions. [2020-10-16 12:31:16,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-16 12:31:16,355 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20 [2020-10-16 12:31:16,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:16,356 INFO L225 Difference]: With dead ends: 87 [2020-10-16 12:31:16,356 INFO L226 Difference]: Without dead ends: 81 [2020-10-16 12:31:16,357 INFO L677 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 [2020-10-16 12:31:16,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-16 12:31:16,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 67. [2020-10-16 12:31:16,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-16 12:31:16,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 168 transitions. [2020-10-16 12:31:16,360 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 168 transitions. Word has length 20 [2020-10-16 12:31:16,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:16,360 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 168 transitions. [2020-10-16 12:31:16,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 12:31:16,360 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 168 transitions. [2020-10-16 12:31:16,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-16 12:31:16,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:16,361 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:16,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:16,572 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:16,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:16,572 INFO L82 PathProgramCache]: Analyzing trace with hash -281439482, now seen corresponding path program 40 times [2020-10-16 12:31:16,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:16,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122038327] [2020-10-16 12:31:16,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:16,695 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:16,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122038327] [2020-10-16 12:31:16,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367992686] [2020-10-16 12:31:16,696 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:16,749 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:31:16,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:16,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-16 12:31:16,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:16,782 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:16,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:16,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-10-16 12:31:16,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [924892759] [2020-10-16 12:31:16,783 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:16,785 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:16,791 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 34 transitions. [2020-10-16 12:31:16,791 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:16,802 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:16,802 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:16,830 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [11195#(and (<= ~j~0 16) (< ~i~0 46))] [2020-10-16 12:31:16,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 12:31:16,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:16,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 12:31:16,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:31:16,831 INFO L87 Difference]: Start difference. First operand 67 states and 168 transitions. Second operand 17 states. [2020-10-16 12:31:17,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:17,434 INFO L93 Difference]: Finished difference Result 87 states and 211 transitions. [2020-10-16 12:31:17,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-16 12:31:17,434 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20 [2020-10-16 12:31:17,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:17,435 INFO L225 Difference]: With dead ends: 87 [2020-10-16 12:31:17,435 INFO L226 Difference]: Without dead ends: 81 [2020-10-16 12:31:17,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=456, Invalid=1104, Unknown=0, NotChecked=0, Total=1560 [2020-10-16 12:31:17,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-16 12:31:17,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 69. [2020-10-16 12:31:17,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-16 12:31:17,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 176 transitions. [2020-10-16 12:31:17,439 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 176 transitions. Word has length 20 [2020-10-16 12:31:17,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:17,440 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 176 transitions. [2020-10-16 12:31:17,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 12:31:17,440 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 176 transitions. [2020-10-16 12:31:17,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-16 12:31:17,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:17,440 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:17,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:17,648 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:17,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:17,648 INFO L82 PathProgramCache]: Analyzing trace with hash -264862232, now seen corresponding path program 41 times [2020-10-16 12:31:17,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:17,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410033575] [2020-10-16 12:31:17,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:17,763 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:17,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410033575] [2020-10-16 12:31:17,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086631249] [2020-10-16 12:31:17,764 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:17,816 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-16 12:31:17,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:17,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-16 12:31:17,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:17,837 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:17,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:17,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-10-16 12:31:17,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1476175921] [2020-10-16 12:31:17,838 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:17,840 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:17,844 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 34 transitions. [2020-10-16 12:31:17,844 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:17,859 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:17,859 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:17,879 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [11540#(and (<= ~j~0 18) (< ~i~0 46))] [2020-10-16 12:31:17,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 12:31:17,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:17,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 12:31:17,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:31:17,880 INFO L87 Difference]: Start difference. First operand 69 states and 176 transitions. Second operand 17 states. [2020-10-16 12:31:18,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:18,549 INFO L93 Difference]: Finished difference Result 87 states and 219 transitions. [2020-10-16 12:31:18,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-16 12:31:18,550 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20 [2020-10-16 12:31:18,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:18,551 INFO L225 Difference]: With dead ends: 87 [2020-10-16 12:31:18,551 INFO L226 Difference]: Without dead ends: 75 [2020-10-16 12:31:18,552 INFO L677 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 [2020-10-16 12:31:18,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-16 12:31:18,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 54. [2020-10-16 12:31:18,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-16 12:31:18,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 132 transitions. [2020-10-16 12:31:18,554 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 132 transitions. Word has length 20 [2020-10-16 12:31:18,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:18,555 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 132 transitions. [2020-10-16 12:31:18,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 12:31:18,555 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 132 transitions. [2020-10-16 12:31:18,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:31:18,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:18,555 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:18,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:18,756 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:18,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:18,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1875703058, now seen corresponding path program 42 times [2020-10-16 12:31:18,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:18,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612454917] [2020-10-16 12:31:18,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:18,944 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:18,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612454917] [2020-10-16 12:31:18,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960144042] [2020-10-16 12:31:18,945 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:18,999 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-10-16 12:31:19,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:19,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-16 12:31:19,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:19,014 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:19,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:19,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2020-10-16 12:31:19,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1148656889] [2020-10-16 12:31:19,015 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:19,017 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:19,022 INFO L258 McrAutomatonBuilder]: Finished intersection with 31 states and 41 transitions. [2020-10-16 12:31:19,022 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:19,025 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:19,025 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:19,045 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:19,045 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:19,062 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:19,062 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:19,070 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:19,070 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:19,078 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [11863#(and (<= ~j~0 4) (< ~i~0 46))] [2020-10-16 12:31:19,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-16 12:31:19,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:19,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-16 12:31:19,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:31:19,079 INFO L87 Difference]: Start difference. First operand 54 states and 132 transitions. Second operand 18 states. [2020-10-16 12:31:19,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:19,449 INFO L93 Difference]: Finished difference Result 84 states and 196 transitions. [2020-10-16 12:31:19,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-16 12:31:19,449 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21 [2020-10-16 12:31:19,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:19,450 INFO L225 Difference]: With dead ends: 84 [2020-10-16 12:31:19,451 INFO L226 Difference]: Without dead ends: 78 [2020-10-16 12:31:19,452 INFO L677 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 [2020-10-16 12:31:19,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-16 12:31:19,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 62. [2020-10-16 12:31:19,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-16 12:31:19,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 152 transitions. [2020-10-16 12:31:19,458 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 152 transitions. Word has length 21 [2020-10-16 12:31:19,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:19,458 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 152 transitions. [2020-10-16 12:31:19,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-16 12:31:19,459 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 152 transitions. [2020-10-16 12:31:19,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:31:19,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:19,462 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:19,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-16 12:31:19,674 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:19,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:19,675 INFO L82 PathProgramCache]: Analyzing trace with hash 145306996, now seen corresponding path program 43 times [2020-10-16 12:31:19,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:19,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292196558] [2020-10-16 12:31:19,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:19,882 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:19,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292196558] [2020-10-16 12:31:19,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944991516] [2020-10-16 12:31:19,883 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:19,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-16 12:31:19,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:19,978 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:19,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:19,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2020-10-16 12:31:19,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1593903005] [2020-10-16 12:31:19,979 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:19,983 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:19,988 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 31 transitions. [2020-10-16 12:31:19,988 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:19,990 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:19,990 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:20,027 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [12179#(and (<= ~j~0 6) (< ~i~0 46))] [2020-10-16 12:31:20,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-16 12:31:20,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:20,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-16 12:31:20,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:31:20,028 INFO L87 Difference]: Start difference. First operand 62 states and 152 transitions. Second operand 18 states. [2020-10-16 12:31:20,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:20,482 INFO L93 Difference]: Finished difference Result 112 states and 254 transitions. [2020-10-16 12:31:20,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-16 12:31:20,482 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21 [2020-10-16 12:31:20,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:20,483 INFO L225 Difference]: With dead ends: 112 [2020-10-16 12:31:20,484 INFO L226 Difference]: Without dead ends: 106 [2020-10-16 12:31:20,484 INFO L677 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 [2020-10-16 12:31:20,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-16 12:31:20,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 64. [2020-10-16 12:31:20,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-16 12:31:20,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 158 transitions. [2020-10-16 12:31:20,487 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 158 transitions. Word has length 21 [2020-10-16 12:31:20,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:20,487 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 158 transitions. [2020-10-16 12:31:20,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-16 12:31:20,487 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 158 transitions. [2020-10-16 12:31:20,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:31:20,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:20,488 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:20,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:20,696 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:20,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:20,697 INFO L82 PathProgramCache]: Analyzing trace with hash -486660522, now seen corresponding path program 44 times [2020-10-16 12:31:20,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:20,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000559631] [2020-10-16 12:31:20,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:20,834 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:20,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000559631] [2020-10-16 12:31:20,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955585117] [2020-10-16 12:31:20,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:20,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:31:20,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:20,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-16 12:31:20,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:20,925 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:20,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:20,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2020-10-16 12:31:20,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [191295372] [2020-10-16 12:31:20,926 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:20,928 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:20,931 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 31 transitions. [2020-10-16 12:31:20,932 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:20,934 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:20,934 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:20,959 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [12535#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-16 12:31:20,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-16 12:31:20,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:20,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-16 12:31:20,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:31:20,961 INFO L87 Difference]: Start difference. First operand 64 states and 158 transitions. Second operand 18 states. [2020-10-16 12:31:21,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:21,487 INFO L93 Difference]: Finished difference Result 109 states and 250 transitions. [2020-10-16 12:31:21,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-16 12:31:21,488 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21 [2020-10-16 12:31:21,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:21,489 INFO L225 Difference]: With dead ends: 109 [2020-10-16 12:31:21,489 INFO L226 Difference]: Without dead ends: 103 [2020-10-16 12:31:21,490 INFO L677 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 [2020-10-16 12:31:21,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-16 12:31:21,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 66. [2020-10-16 12:31:21,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-16 12:31:21,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 164 transitions. [2020-10-16 12:31:21,493 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 164 transitions. Word has length 21 [2020-10-16 12:31:21,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:21,493 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 164 transitions. [2020-10-16 12:31:21,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-16 12:31:21,493 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 164 transitions. [2020-10-16 12:31:21,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:31:21,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:21,494 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:21,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:21,703 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:21,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:21,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1908545608, now seen corresponding path program 45 times [2020-10-16 12:31:21,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:21,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082372288] [2020-10-16 12:31:21,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:21,840 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:21,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082372288] [2020-10-16 12:31:21,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134227551] [2020-10-16 12:31:21,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:21,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-10-16 12:31:21,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:21,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-16 12:31:21,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:21,912 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:21,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:21,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2020-10-16 12:31:21,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [113417246] [2020-10-16 12:31:21,913 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:21,915 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:21,919 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 31 transitions. [2020-10-16 12:31:21,920 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:21,929 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:21,929 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:21,947 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [12896#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-16 12:31:21,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-16 12:31:21,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:21,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-16 12:31:21,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:31:21,949 INFO L87 Difference]: Start difference. First operand 66 states and 164 transitions. Second operand 18 states. [2020-10-16 12:31:22,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:22,530 INFO L93 Difference]: Finished difference Result 107 states and 248 transitions. [2020-10-16 12:31:22,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-16 12:31:22,531 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21 [2020-10-16 12:31:22,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:22,532 INFO L225 Difference]: With dead ends: 107 [2020-10-16 12:31:22,532 INFO L226 Difference]: Without dead ends: 101 [2020-10-16 12:31:22,534 INFO L677 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 [2020-10-16 12:31:22,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-16 12:31:22,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 68. [2020-10-16 12:31:22,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-16 12:31:22,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 170 transitions. [2020-10-16 12:31:22,536 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 170 transitions. Word has length 21 [2020-10-16 12:31:22,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:22,537 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 170 transitions. [2020-10-16 12:31:22,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-16 12:31:22,537 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 170 transitions. [2020-10-16 12:31:22,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:31:22,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:22,537 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:22,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-10-16 12:31:22,748 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:22,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:22,748 INFO L82 PathProgramCache]: Analyzing trace with hash 266508698, now seen corresponding path program 46 times [2020-10-16 12:31:22,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:22,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121527495] [2020-10-16 12:31:22,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:22,874 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:22,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121527495] [2020-10-16 12:31:22,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590939169] [2020-10-16 12:31:22,875 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:22,921 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:31:22,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:22,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-16 12:31:22,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:22,935 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:22,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:22,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2020-10-16 12:31:22,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [660014331] [2020-10-16 12:31:22,936 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:22,938 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:22,942 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 31 transitions. [2020-10-16 12:31:22,942 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:22,946 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:22,946 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:22,975 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [13263#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-16 12:31:22,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-16 12:31:22,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:22,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-16 12:31:22,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:31:22,976 INFO L87 Difference]: Start difference. First operand 68 states and 170 transitions. Second operand 18 states. [2020-10-16 12:31:23,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:23,633 INFO L93 Difference]: Finished difference Result 105 states and 246 transitions. [2020-10-16 12:31:23,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:31:23,634 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21 [2020-10-16 12:31:23,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:23,635 INFO L225 Difference]: With dead ends: 105 [2020-10-16 12:31:23,635 INFO L226 Difference]: Without dead ends: 99 [2020-10-16 12:31:23,636 INFO L677 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 [2020-10-16 12:31:23,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-16 12:31:23,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 70. [2020-10-16 12:31:23,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-16 12:31:23,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 176 transitions. [2020-10-16 12:31:23,638 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 176 transitions. Word has length 21 [2020-10-16 12:31:23,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:23,639 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 176 transitions. [2020-10-16 12:31:23,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-16 12:31:23,639 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 176 transitions. [2020-10-16 12:31:23,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:31:23,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:23,639 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:23,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-10-16 12:31:23,849 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:23,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:23,849 INFO L82 PathProgramCache]: Analyzing trace with hash -982623236, now seen corresponding path program 47 times [2020-10-16 12:31:23,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:23,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076413992] [2020-10-16 12:31:23,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:23,970 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:23,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076413992] [2020-10-16 12:31:23,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474411446] [2020-10-16 12:31:23,971 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:24,018 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-10-16 12:31:24,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:24,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-16 12:31:24,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:24,043 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:24,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:24,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2020-10-16 12:31:24,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1606506538] [2020-10-16 12:31:24,044 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:24,046 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:24,049 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 31 transitions. [2020-10-16 12:31:24,049 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:24,059 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:24,060 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:24,080 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [13636#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-16 12:31:24,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-16 12:31:24,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:24,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-16 12:31:24,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:31:24,082 INFO L87 Difference]: Start difference. First operand 70 states and 176 transitions. Second operand 18 states. [2020-10-16 12:31:24,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:24,771 INFO L93 Difference]: Finished difference Result 105 states and 249 transitions. [2020-10-16 12:31:24,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-16 12:31:24,771 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21 [2020-10-16 12:31:24,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:24,772 INFO L225 Difference]: With dead ends: 105 [2020-10-16 12:31:24,773 INFO L226 Difference]: Without dead ends: 99 [2020-10-16 12:31:24,774 INFO L677 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 [2020-10-16 12:31:24,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-16 12:31:24,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 72. [2020-10-16 12:31:24,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-16 12:31:24,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 184 transitions. [2020-10-16 12:31:24,777 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 184 transitions. Word has length 21 [2020-10-16 12:31:24,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:24,777 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 184 transitions. [2020-10-16 12:31:24,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-16 12:31:24,777 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 184 transitions. [2020-10-16 12:31:24,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:31:24,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:24,778 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:24,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-10-16 12:31:24,978 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:24,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:24,979 INFO L82 PathProgramCache]: Analyzing trace with hash -966045986, now seen corresponding path program 48 times [2020-10-16 12:31:24,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:24,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420272377] [2020-10-16 12:31:24,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:25,092 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:25,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420272377] [2020-10-16 12:31:25,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347046803] [2020-10-16 12:31:25,093 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:25,139 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-10-16 12:31:25,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:25,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-16 12:31:25,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:25,170 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:25,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:25,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2020-10-16 12:31:25,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1740540749] [2020-10-16 12:31:25,171 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:25,182 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:25,186 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 31 transitions. [2020-10-16 12:31:25,186 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:25,188 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:25,189 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:25,223 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [14017#(and (<= ~j~0 16) (< ~i~0 46))] [2020-10-16 12:31:25,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-16 12:31:25,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:25,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-16 12:31:25,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:31:25,224 INFO L87 Difference]: Start difference. First operand 72 states and 184 transitions. Second operand 18 states. [2020-10-16 12:31:25,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:25,979 INFO L93 Difference]: Finished difference Result 106 states and 259 transitions. [2020-10-16 12:31:25,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-16 12:31:25,979 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21 [2020-10-16 12:31:25,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:25,980 INFO L225 Difference]: With dead ends: 106 [2020-10-16 12:31:25,980 INFO L226 Difference]: Without dead ends: 94 [2020-10-16 12:31:25,982 INFO L677 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 [2020-10-16 12:31:25,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-16 12:31:25,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 58. [2020-10-16 12:31:25,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-16 12:31:25,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 141 transitions. [2020-10-16 12:31:25,985 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 141 transitions. Word has length 21 [2020-10-16 12:31:25,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:25,985 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 141 transitions. [2020-10-16 12:31:25,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-16 12:31:25,985 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 141 transitions. [2020-10-16 12:31:25,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-16 12:31:25,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:25,986 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:26,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:26,197 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:26,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:26,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1728807741, now seen corresponding path program 49 times [2020-10-16 12:31:26,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:26,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14887212] [2020-10-16 12:31:26,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:26,398 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:26,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14887212] [2020-10-16 12:31:26,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402260076] [2020-10-16 12:31:26,399 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:26,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-16 12:31:26,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:26,457 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:26,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:26,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2020-10-16 12:31:26,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1556184473] [2020-10-16 12:31:26,457 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:26,459 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:26,462 INFO L258 McrAutomatonBuilder]: Finished intersection with 31 states and 38 transitions. [2020-10-16 12:31:26,463 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:26,463 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:26,464 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:26,498 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [14379#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-16 12:31:26,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-16 12:31:26,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:26,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-16 12:31:26,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:31:26,499 INFO L87 Difference]: Start difference. First operand 58 states and 141 transitions. Second operand 19 states. [2020-10-16 12:31:26,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:26,924 INFO L93 Difference]: Finished difference Result 102 states and 234 transitions. [2020-10-16 12:31:26,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-16 12:31:26,924 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22 [2020-10-16 12:31:26,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:26,926 INFO L225 Difference]: With dead ends: 102 [2020-10-16 12:31:26,926 INFO L226 Difference]: Without dead ends: 96 [2020-10-16 12:31:26,926 INFO L677 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 [2020-10-16 12:31:26,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-16 12:31:26,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 65. [2020-10-16 12:31:26,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-16 12:31:26,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 160 transitions. [2020-10-16 12:31:26,929 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 160 transitions. Word has length 22 [2020-10-16 12:31:26,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:26,929 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 160 transitions. [2020-10-16 12:31:26,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-16 12:31:26,930 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 160 transitions. [2020-10-16 12:31:26,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-16 12:31:26,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:26,930 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:27,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:27,137 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:27,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:27,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1588321, now seen corresponding path program 50 times [2020-10-16 12:31:27,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:27,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500101578] [2020-10-16 12:31:27,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:27,330 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:27,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500101578] [2020-10-16 12:31:27,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372494432] [2020-10-16 12:31:27,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:27,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:31:27,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:27,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-16 12:31:27,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:27,407 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:27,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:27,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2020-10-16 12:31:27,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [329071674] [2020-10-16 12:31:27,408 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:27,410 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:27,414 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 36 transitions. [2020-10-16 12:31:27,414 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:27,417 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:27,417 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:27,447 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [14727#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-16 12:31:27,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-16 12:31:27,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:27,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-16 12:31:27,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:31:27,448 INFO L87 Difference]: Start difference. First operand 65 states and 160 transitions. Second operand 19 states. [2020-10-16 12:31:27,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:27,931 INFO L93 Difference]: Finished difference Result 99 states and 230 transitions. [2020-10-16 12:31:27,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-16 12:31:27,932 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22 [2020-10-16 12:31:27,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:27,933 INFO L225 Difference]: With dead ends: 99 [2020-10-16 12:31:27,933 INFO L226 Difference]: Without dead ends: 93 [2020-10-16 12:31:27,934 INFO L677 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 [2020-10-16 12:31:27,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-16 12:31:27,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 67. [2020-10-16 12:31:27,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-16 12:31:27,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 166 transitions. [2020-10-16 12:31:27,937 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 166 transitions. Word has length 22 [2020-10-16 12:31:27,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:27,937 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 166 transitions. [2020-10-16 12:31:27,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-16 12:31:27,937 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 166 transitions. [2020-10-16 12:31:27,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-16 12:31:27,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:27,937 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:28,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:28,138 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:28,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:28,139 INFO L82 PathProgramCache]: Analyzing trace with hash -633555839, now seen corresponding path program 51 times [2020-10-16 12:31:28,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:28,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574701970] [2020-10-16 12:31:28,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:28,317 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:28,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574701970] [2020-10-16 12:31:28,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34608821] [2020-10-16 12:31:28,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:28,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-10-16 12:31:28,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:28,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-16 12:31:28,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:28,419 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:28,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:28,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2020-10-16 12:31:28,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [395626257] [2020-10-16 12:31:28,420 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:28,423 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:28,430 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 36 transitions. [2020-10-16 12:31:28,431 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:28,445 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:28,446 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:28,476 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [15080#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-16 12:31:28,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-16 12:31:28,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:28,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-16 12:31:28,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:31:28,477 INFO L87 Difference]: Start difference. First operand 67 states and 166 transitions. Second operand 19 states. [2020-10-16 12:31:29,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:29,108 INFO L93 Difference]: Finished difference Result 97 states and 228 transitions. [2020-10-16 12:31:29,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-16 12:31:29,109 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22 [2020-10-16 12:31:29,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:29,110 INFO L225 Difference]: With dead ends: 97 [2020-10-16 12:31:29,110 INFO L226 Difference]: Without dead ends: 91 [2020-10-16 12:31:29,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=403, Invalid=1157, Unknown=0, NotChecked=0, Total=1560 [2020-10-16 12:31:29,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-16 12:31:29,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 69. [2020-10-16 12:31:29,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-16 12:31:29,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 172 transitions. [2020-10-16 12:31:29,114 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 172 transitions. Word has length 22 [2020-10-16 12:31:29,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:29,114 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 172 transitions. [2020-10-16 12:31:29,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-16 12:31:29,114 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 172 transitions. [2020-10-16 12:31:29,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-16 12:31:29,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:29,114 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:29,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:29,315 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:29,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:29,316 INFO L82 PathProgramCache]: Analyzing trace with hash -2055440925, now seen corresponding path program 52 times [2020-10-16 12:31:29,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:29,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809787110] [2020-10-16 12:31:29,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:29,484 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:29,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809787110] [2020-10-16 12:31:29,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030339990] [2020-10-16 12:31:29,485 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:29,530 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:31:29,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:29,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-16 12:31:29,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:29,549 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:29,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:29,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2020-10-16 12:31:29,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1703658599] [2020-10-16 12:31:29,550 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:29,553 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:29,569 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 36 transitions. [2020-10-16 12:31:29,569 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:29,585 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:29,585 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:29,605 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [15439#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-16 12:31:29,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-16 12:31:29,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:29,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-16 12:31:29,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:31:29,606 INFO L87 Difference]: Start difference. First operand 69 states and 172 transitions. Second operand 19 states. [2020-10-16 12:31:30,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:30,234 INFO L93 Difference]: Finished difference Result 95 states and 226 transitions. [2020-10-16 12:31:30,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-16 12:31:30,234 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22 [2020-10-16 12:31:30,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:30,235 INFO L225 Difference]: With dead ends: 95 [2020-10-16 12:31:30,236 INFO L226 Difference]: Without dead ends: 89 [2020-10-16 12:31:30,236 INFO L677 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 [2020-10-16 12:31:30,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-16 12:31:30,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 71. [2020-10-16 12:31:30,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-16 12:31:30,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 178 transitions. [2020-10-16 12:31:30,239 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 178 transitions. Word has length 22 [2020-10-16 12:31:30,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:30,239 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 178 transitions. [2020-10-16 12:31:30,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-16 12:31:30,239 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 178 transitions. [2020-10-16 12:31:30,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-16 12:31:30,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:30,240 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:30,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-10-16 12:31:30,441 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:30,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:30,441 INFO L82 PathProgramCache]: Analyzing trace with hash 119613381, now seen corresponding path program 53 times [2020-10-16 12:31:30,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:30,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059347745] [2020-10-16 12:31:30,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:30,590 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:30,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059347745] [2020-10-16 12:31:30,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619408273] [2020-10-16 12:31:30,591 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:30,641 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-10-16 12:31:30,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:30,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-16 12:31:30,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:30,669 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:30,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:30,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2020-10-16 12:31:30,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [521476239] [2020-10-16 12:31:30,670 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:30,672 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:30,675 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 36 transitions. [2020-10-16 12:31:30,676 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:30,678 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:30,678 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:30,708 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [15804#(and (<= ~j~0 16) (< ~i~0 46))] [2020-10-16 12:31:30,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-16 12:31:30,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:30,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-16 12:31:30,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:31:30,709 INFO L87 Difference]: Start difference. First operand 71 states and 178 transitions. Second operand 19 states. [2020-10-16 12:31:31,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:31,420 INFO L93 Difference]: Finished difference Result 93 states and 224 transitions. [2020-10-16 12:31:31,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:31:31,421 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22 [2020-10-16 12:31:31,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:31,422 INFO L225 Difference]: With dead ends: 93 [2020-10-16 12:31:31,422 INFO L226 Difference]: Without dead ends: 87 [2020-10-16 12:31:31,423 INFO L677 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 [2020-10-16 12:31:31,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-16 12:31:31,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 73. [2020-10-16 12:31:31,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-16 12:31:31,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 184 transitions. [2020-10-16 12:31:31,425 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 184 transitions. Word has length 22 [2020-10-16 12:31:31,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:31,425 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 184 transitions. [2020-10-16 12:31:31,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-16 12:31:31,425 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 184 transitions. [2020-10-16 12:31:31,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-16 12:31:31,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:31,426 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:31,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:31,626 INFO L429 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:31,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:31,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1129518553, now seen corresponding path program 54 times [2020-10-16 12:31:31,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:31,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287726700] [2020-10-16 12:31:31,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:31,776 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:31,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287726700] [2020-10-16 12:31:31,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087969220] [2020-10-16 12:31:31,777 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:31,831 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-10-16 12:31:31,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:31,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-16 12:31:31,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:31,850 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:31,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:31,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2020-10-16 12:31:31,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [710068737] [2020-10-16 12:31:31,851 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:31,854 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:31,858 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 36 transitions. [2020-10-16 12:31:31,858 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:31,861 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:31,861 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:31,897 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [16175#(and (<= ~j~0 18) (< ~i~0 46))] [2020-10-16 12:31:31,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-16 12:31:31,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:31,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-16 12:31:31,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:31:31,898 INFO L87 Difference]: Start difference. First operand 73 states and 184 transitions. Second operand 19 states. [2020-10-16 12:31:32,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:32,684 INFO L93 Difference]: Finished difference Result 93 states and 227 transitions. [2020-10-16 12:31:32,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-16 12:31:32,685 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22 [2020-10-16 12:31:32,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:32,686 INFO L225 Difference]: With dead ends: 93 [2020-10-16 12:31:32,686 INFO L226 Difference]: Without dead ends: 87 [2020-10-16 12:31:32,686 INFO L677 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 [2020-10-16 12:31:32,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-16 12:31:32,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 75. [2020-10-16 12:31:32,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-16 12:31:32,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 192 transitions. [2020-10-16 12:31:32,689 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 192 transitions. Word has length 22 [2020-10-16 12:31:32,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:32,690 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 192 transitions. [2020-10-16 12:31:32,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-16 12:31:32,690 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 192 transitions. [2020-10-16 12:31:32,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-16 12:31:32,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:32,691 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:32,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-16 12:31:32,901 INFO L429 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:32,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:32,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1112941303, now seen corresponding path program 55 times [2020-10-16 12:31:32,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:32,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696123027] [2020-10-16 12:31:32,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:33,039 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:33,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696123027] [2020-10-16 12:31:33,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744398319] [2020-10-16 12:31:33,040 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:33,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-16 12:31:33,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:33,134 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:33,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:33,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2020-10-16 12:31:33,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1018184495] [2020-10-16 12:31:33,135 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:33,137 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:33,142 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 36 transitions. [2020-10-16 12:31:33,142 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:33,151 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:33,151 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:33,171 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [16554#(and (<= ~j~0 20) (< ~i~0 46))] [2020-10-16 12:31:33,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-16 12:31:33,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:33,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-16 12:31:33,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:31:33,172 INFO L87 Difference]: Start difference. First operand 75 states and 192 transitions. Second operand 19 states. [2020-10-16 12:31:33,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:33,971 INFO L93 Difference]: Finished difference Result 93 states and 235 transitions. [2020-10-16 12:31:33,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-16 12:31:33,972 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22 [2020-10-16 12:31:33,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:33,973 INFO L225 Difference]: With dead ends: 93 [2020-10-16 12:31:33,973 INFO L226 Difference]: Without dead ends: 81 [2020-10-16 12:31:33,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=705, Invalid=1551, Unknown=0, NotChecked=0, Total=2256 [2020-10-16 12:31:33,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-16 12:31:33,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 58. [2020-10-16 12:31:33,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-16 12:31:33,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 142 transitions. [2020-10-16 12:31:33,977 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 142 transitions. Word has length 22 [2020-10-16 12:31:33,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:33,977 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 142 transitions. [2020-10-16 12:31:33,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-16 12:31:33,977 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 142 transitions. [2020-10-16 12:31:33,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 12:31:33,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:33,978 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:34,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-16 12:31:34,187 INFO L429 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:34,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:34,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1335609647, now seen corresponding path program 56 times [2020-10-16 12:31:34,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:34,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260345951] [2020-10-16 12:31:34,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:34,396 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:34,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260345951] [2020-10-16 12:31:34,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580362221] [2020-10-16 12:31:34,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:34,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:31:34,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:34,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-16 12:31:34,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:34,453 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:34,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:34,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2020-10-16 12:31:34,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1888406572] [2020-10-16 12:31:34,454 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:34,456 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:34,462 INFO L258 McrAutomatonBuilder]: Finished intersection with 33 states and 43 transitions. [2020-10-16 12:31:34,462 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:34,464 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:34,464 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:34,495 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:34,495 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:34,514 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:34,514 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:34,523 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:34,523 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:34,533 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [16907#(and (<= ~j~0 4) (< ~i~0 46))] [2020-10-16 12:31:34,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-16 12:31:34,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:34,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-16 12:31:34,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:31:34,534 INFO L87 Difference]: Start difference. First operand 58 states and 142 transitions. Second operand 20 states. [2020-10-16 12:31:34,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:34,949 INFO L93 Difference]: Finished difference Result 90 states and 210 transitions. [2020-10-16 12:31:34,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-16 12:31:34,950 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2020-10-16 12:31:34,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:34,951 INFO L225 Difference]: With dead ends: 90 [2020-10-16 12:31:34,951 INFO L226 Difference]: Without dead ends: 84 [2020-10-16 12:31:34,951 INFO L677 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 [2020-10-16 12:31:34,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-16 12:31:34,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 66. [2020-10-16 12:31:34,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-16 12:31:34,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 162 transitions. [2020-10-16 12:31:34,954 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 162 transitions. Word has length 23 [2020-10-16 12:31:34,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:34,954 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 162 transitions. [2020-10-16 12:31:34,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-16 12:31:34,954 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 162 transitions. [2020-10-16 12:31:34,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 12:31:34,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:34,955 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:35,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:35,156 INFO L429 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:35,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:35,156 INFO L82 PathProgramCache]: Analyzing trace with hash -2093881677, now seen corresponding path program 57 times [2020-10-16 12:31:35,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:35,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501543637] [2020-10-16 12:31:35,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:35,365 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:35,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501543637] [2020-10-16 12:31:35,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724458206] [2020-10-16 12:31:35,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:35,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-10-16 12:31:35,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:35,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-16 12:31:35,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:35,427 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:35,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:35,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2020-10-16 12:31:35,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [782401499] [2020-10-16 12:31:35,428 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:35,430 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:35,433 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 33 transitions. [2020-10-16 12:31:35,434 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:35,447 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:35,447 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:35,470 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [17249#(and (<= ~j~0 6) (< ~i~0 46))] [2020-10-16 12:31:35,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-16 12:31:35,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:35,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-16 12:31:35,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:31:35,472 INFO L87 Difference]: Start difference. First operand 66 states and 162 transitions. Second operand 20 states. [2020-10-16 12:31:36,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:36,020 INFO L93 Difference]: Finished difference Result 122 states and 276 transitions. [2020-10-16 12:31:36,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-16 12:31:36,021 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2020-10-16 12:31:36,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:36,022 INFO L225 Difference]: With dead ends: 122 [2020-10-16 12:31:36,023 INFO L226 Difference]: Without dead ends: 116 [2020-10-16 12:31:36,023 INFO L677 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 [2020-10-16 12:31:36,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-16 12:31:36,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 68. [2020-10-16 12:31:36,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-16 12:31:36,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 168 transitions. [2020-10-16 12:31:36,026 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 168 transitions. Word has length 23 [2020-10-16 12:31:36,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:36,032 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 168 transitions. [2020-10-16 12:31:36,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-16 12:31:36,032 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 168 transitions. [2020-10-16 12:31:36,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 12:31:36,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:36,033 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:36,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2020-10-16 12:31:36,234 INFO L429 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:36,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:36,234 INFO L82 PathProgramCache]: Analyzing trace with hash 470689557, now seen corresponding path program 58 times [2020-10-16 12:31:36,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:36,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639183924] [2020-10-16 12:31:36,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:36,435 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:36,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639183924] [2020-10-16 12:31:36,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996522990] [2020-10-16 12:31:36,436 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:36,483 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:31:36,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:36,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-16 12:31:36,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:36,498 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:36,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:36,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2020-10-16 12:31:36,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [332219358] [2020-10-16 12:31:36,499 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:36,502 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:36,507 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 33 transitions. [2020-10-16 12:31:36,507 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:36,526 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:36,527 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:36,551 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [17635#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-16 12:31:36,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-16 12:31:36,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:36,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-16 12:31:36,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:31:36,553 INFO L87 Difference]: Start difference. First operand 68 states and 168 transitions. Second operand 20 states. [2020-10-16 12:31:37,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:37,163 INFO L93 Difference]: Finished difference Result 119 states and 272 transitions. [2020-10-16 12:31:37,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-16 12:31:37,166 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2020-10-16 12:31:37,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:37,167 INFO L225 Difference]: With dead ends: 119 [2020-10-16 12:31:37,167 INFO L226 Difference]: Without dead ends: 113 [2020-10-16 12:31:37,168 INFO L677 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 [2020-10-16 12:31:37,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-16 12:31:37,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 70. [2020-10-16 12:31:37,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-16 12:31:37,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 174 transitions. [2020-10-16 12:31:37,169 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 174 transitions. Word has length 23 [2020-10-16 12:31:37,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:37,170 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 174 transitions. [2020-10-16 12:31:37,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-16 12:31:37,170 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 174 transitions. [2020-10-16 12:31:37,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 12:31:37,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:37,170 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:37,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:37,371 INFO L429 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:37,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:37,372 INFO L82 PathProgramCache]: Analyzing trace with hash -161277961, now seen corresponding path program 59 times [2020-10-16 12:31:37,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:37,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134225806] [2020-10-16 12:31:37,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:37,553 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:37,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134225806] [2020-10-16 12:31:37,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383942993] [2020-10-16 12:31:37,554 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:37,622 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-10-16 12:31:37,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:37,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-16 12:31:37,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:37,637 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:37,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:37,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2020-10-16 12:31:37,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1722045547] [2020-10-16 12:31:37,638 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:37,639 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:37,642 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 33 transitions. [2020-10-16 12:31:37,643 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:37,658 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:37,658 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:37,679 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [18026#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-16 12:31:37,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-16 12:31:37,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:37,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-16 12:31:37,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:31:37,680 INFO L87 Difference]: Start difference. First operand 70 states and 174 transitions. Second operand 20 states. [2020-10-16 12:31:38,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:38,352 INFO L93 Difference]: Finished difference Result 117 states and 270 transitions. [2020-10-16 12:31:38,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:31:38,352 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2020-10-16 12:31:38,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:38,353 INFO L225 Difference]: With dead ends: 117 [2020-10-16 12:31:38,353 INFO L226 Difference]: Without dead ends: 111 [2020-10-16 12:31:38,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=522, Invalid=1458, Unknown=0, NotChecked=0, Total=1980 [2020-10-16 12:31:38,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-16 12:31:38,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 72. [2020-10-16 12:31:38,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-16 12:31:38,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 180 transitions. [2020-10-16 12:31:38,356 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 180 transitions. Word has length 23 [2020-10-16 12:31:38,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:38,356 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 180 transitions. [2020-10-16 12:31:38,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-16 12:31:38,356 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 180 transitions. [2020-10-16 12:31:38,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 12:31:38,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:38,357 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:38,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2020-10-16 12:31:38,557 INFO L429 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:38,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:38,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1583163047, now seen corresponding path program 60 times [2020-10-16 12:31:38,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:38,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486192066] [2020-10-16 12:31:38,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:38,728 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:38,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486192066] [2020-10-16 12:31:38,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494250489] [2020-10-16 12:31:38,729 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:38,780 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-10-16 12:31:38,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:38,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-16 12:31:38,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:38,807 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:38,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:38,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2020-10-16 12:31:38,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1174715528] [2020-10-16 12:31:38,808 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:38,810 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:38,813 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 33 transitions. [2020-10-16 12:31:38,814 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:38,814 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:38,814 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:38,846 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [18423#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-16 12:31:38,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-16 12:31:38,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:38,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-16 12:31:38,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:31:38,847 INFO L87 Difference]: Start difference. First operand 72 states and 180 transitions. Second operand 20 states. [2020-10-16 12:31:39,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:39,586 INFO L93 Difference]: Finished difference Result 115 states and 268 transitions. [2020-10-16 12:31:39,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-16 12:31:39,590 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2020-10-16 12:31:39,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:39,591 INFO L225 Difference]: With dead ends: 115 [2020-10-16 12:31:39,591 INFO L226 Difference]: Without dead ends: 109 [2020-10-16 12:31:39,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=587, Invalid=1575, Unknown=0, NotChecked=0, Total=2162 [2020-10-16 12:31:39,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-16 12:31:39,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 74. [2020-10-16 12:31:39,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-16 12:31:39,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 186 transitions. [2020-10-16 12:31:39,594 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 186 transitions. Word has length 23 [2020-10-16 12:31:39,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:39,594 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 186 transitions. [2020-10-16 12:31:39,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-16 12:31:39,594 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 186 transitions. [2020-10-16 12:31:39,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 12:31:39,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:39,594 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:39,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:39,795 INFO L429 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:39,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:39,796 INFO L82 PathProgramCache]: Analyzing trace with hash 591891259, now seen corresponding path program 61 times [2020-10-16 12:31:39,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:39,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235020254] [2020-10-16 12:31:39,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:39,948 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:39,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235020254] [2020-10-16 12:31:39,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45339745] [2020-10-16 12:31:39,949 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:40,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-16 12:31:40,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:40,043 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:40,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:40,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2020-10-16 12:31:40,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [639030024] [2020-10-16 12:31:40,044 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:40,046 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:40,051 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 33 transitions. [2020-10-16 12:31:40,051 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:40,060 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:40,061 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:40,081 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [18826#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-16 12:31:40,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-16 12:31:40,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:40,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-16 12:31:40,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:31:40,082 INFO L87 Difference]: Start difference. First operand 74 states and 186 transitions. Second operand 20 states. [2020-10-16 12:31:40,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:40,873 INFO L93 Difference]: Finished difference Result 113 states and 266 transitions. [2020-10-16 12:31:40,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-16 12:31:40,873 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2020-10-16 12:31:40,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:40,874 INFO L225 Difference]: With dead ends: 113 [2020-10-16 12:31:40,875 INFO L226 Difference]: Without dead ends: 107 [2020-10-16 12:31:40,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=668, Invalid=1684, Unknown=0, NotChecked=0, Total=2352 [2020-10-16 12:31:40,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-16 12:31:40,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 76. [2020-10-16 12:31:40,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-16 12:31:40,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 192 transitions. [2020-10-16 12:31:40,878 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 192 transitions. Word has length 23 [2020-10-16 12:31:40,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:40,878 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 192 transitions. [2020-10-16 12:31:40,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-16 12:31:40,878 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 192 transitions. [2020-10-16 12:31:40,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 12:31:40,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:40,879 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:41,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2020-10-16 12:31:41,080 INFO L429 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:41,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:41,080 INFO L82 PathProgramCache]: Analyzing trace with hash -657240675, now seen corresponding path program 62 times [2020-10-16 12:31:41,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:41,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654375371] [2020-10-16 12:31:41,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:41,259 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:41,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654375371] [2020-10-16 12:31:41,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376760748] [2020-10-16 12:31:41,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:41,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:31:41,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:41,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-16 12:31:41,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:41,336 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:41,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:41,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2020-10-16 12:31:41,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [105989751] [2020-10-16 12:31:41,337 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:41,340 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:41,345 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 33 transitions. [2020-10-16 12:31:41,345 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:41,354 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:41,354 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:41,378 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [19235#(and (<= ~j~0 16) (< ~i~0 46))] [2020-10-16 12:31:41,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-16 12:31:41,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:41,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-16 12:31:41,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:31:41,379 INFO L87 Difference]: Start difference. First operand 76 states and 192 transitions. Second operand 20 states. [2020-10-16 12:31:42,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:42,275 INFO L93 Difference]: Finished difference Result 113 states and 269 transitions. [2020-10-16 12:31:42,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-16 12:31:42,276 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2020-10-16 12:31:42,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:42,277 INFO L225 Difference]: With dead ends: 113 [2020-10-16 12:31:42,277 INFO L226 Difference]: Without dead ends: 107 [2020-10-16 12:31:42,278 INFO L677 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 [2020-10-16 12:31:42,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-16 12:31:42,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 78. [2020-10-16 12:31:42,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-16 12:31:42,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 200 transitions. [2020-10-16 12:31:42,280 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 200 transitions. Word has length 23 [2020-10-16 12:31:42,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:42,280 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 200 transitions. [2020-10-16 12:31:42,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-16 12:31:42,281 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 200 transitions. [2020-10-16 12:31:42,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 12:31:42,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:42,281 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:42,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:42,486 INFO L429 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:42,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:42,486 INFO L82 PathProgramCache]: Analyzing trace with hash -640663425, now seen corresponding path program 63 times [2020-10-16 12:31:42,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:42,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882313886] [2020-10-16 12:31:42,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:42,658 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:42,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882313886] [2020-10-16 12:31:42,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725690467] [2020-10-16 12:31:42,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:42,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-10-16 12:31:42,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:42,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-16 12:31:42,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:42,741 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:42,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:42,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2020-10-16 12:31:42,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [160421540] [2020-10-16 12:31:42,742 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:42,745 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:42,750 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 33 transitions. [2020-10-16 12:31:42,751 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:42,761 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:42,761 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:42,783 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [19652#(and (<= ~j~0 18) (< ~i~0 46))] [2020-10-16 12:31:42,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-16 12:31:42,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:42,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-16 12:31:42,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:31:42,784 INFO L87 Difference]: Start difference. First operand 78 states and 200 transitions. Second operand 20 states. [2020-10-16 12:31:43,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:43,733 INFO L93 Difference]: Finished difference Result 114 states and 279 transitions. [2020-10-16 12:31:43,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-16 12:31:43,734 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2020-10-16 12:31:43,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:43,735 INFO L225 Difference]: With dead ends: 114 [2020-10-16 12:31:43,735 INFO L226 Difference]: Without dead ends: 102 [2020-10-16 12:31:43,736 INFO L677 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 [2020-10-16 12:31:43,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-16 12:31:43,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 62. [2020-10-16 12:31:43,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-16 12:31:43,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 151 transitions. [2020-10-16 12:31:43,738 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 151 transitions. Word has length 23 [2020-10-16 12:31:43,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:43,738 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 151 transitions. [2020-10-16 12:31:43,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-16 12:31:43,738 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 151 transitions. [2020-10-16 12:31:43,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-16 12:31:43,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:43,739 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:43,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2020-10-16 12:31:43,940 INFO L429 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:43,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:43,940 INFO L82 PathProgramCache]: Analyzing trace with hash -768088516, now seen corresponding path program 64 times [2020-10-16 12:31:43,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:43,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422774465] [2020-10-16 12:31:43,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:44,232 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:44,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422774465] [2020-10-16 12:31:44,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145287863] [2020-10-16 12:31:44,233 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:44,303 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:31:44,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:44,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-16 12:31:44,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:44,325 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:44,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:44,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-10-16 12:31:44,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1425657365] [2020-10-16 12:31:44,326 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:44,331 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:44,341 INFO L258 McrAutomatonBuilder]: Finished intersection with 33 states and 40 transitions. [2020-10-16 12:31:44,341 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:44,359 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:44,360 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:44,397 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [20046#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-16 12:31:44,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-16 12:31:44,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:44,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-16 12:31:44,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:31:44,398 INFO L87 Difference]: Start difference. First operand 62 states and 151 transitions. Second operand 21 states. [2020-10-16 12:31:45,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:45,057 INFO L93 Difference]: Finished difference Result 110 states and 252 transitions. [2020-10-16 12:31:45,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-16 12:31:45,058 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 24 [2020-10-16 12:31:45,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:45,059 INFO L225 Difference]: With dead ends: 110 [2020-10-16 12:31:45,059 INFO L226 Difference]: Without dead ends: 104 [2020-10-16 12:31:45,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=432, Invalid=1128, Unknown=0, NotChecked=0, Total=1560 [2020-10-16 12:31:45,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-16 12:31:45,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 69. [2020-10-16 12:31:45,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-16 12:31:45,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 170 transitions. [2020-10-16 12:31:45,063 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 170 transitions. Word has length 24 [2020-10-16 12:31:45,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:45,064 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 170 transitions. [2020-10-16 12:31:45,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-16 12:31:45,064 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 170 transitions. [2020-10-16 12:31:45,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-16 12:31:45,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:45,065 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:45,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:45,275 INFO L429 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:45,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:45,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1526360546, now seen corresponding path program 65 times [2020-10-16 12:31:45,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:45,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911031042] [2020-10-16 12:31:45,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:45,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:45,497 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:45,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911031042] [2020-10-16 12:31:45,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713177152] [2020-10-16 12:31:45,497 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:45,553 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-10-16 12:31:45,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:45,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-16 12:31:45,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:45,566 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:45,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:45,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-10-16 12:31:45,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [414771701] [2020-10-16 12:31:45,567 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:45,569 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:45,575 INFO L258 McrAutomatonBuilder]: Finished intersection with 32 states and 38 transitions. [2020-10-16 12:31:45,575 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:45,576 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:45,576 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:45,609 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [20422#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-16 12:31:45,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-16 12:31:45,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:45,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-16 12:31:45,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:31:45,610 INFO L87 Difference]: Start difference. First operand 69 states and 170 transitions. Second operand 21 states. [2020-10-16 12:31:46,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:46,183 INFO L93 Difference]: Finished difference Result 107 states and 248 transitions. [2020-10-16 12:31:46,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-16 12:31:46,184 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 24 [2020-10-16 12:31:46,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:46,185 INFO L225 Difference]: With dead ends: 107 [2020-10-16 12:31:46,185 INFO L226 Difference]: Without dead ends: 101 [2020-10-16 12:31:46,186 INFO L677 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 [2020-10-16 12:31:46,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-16 12:31:46,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 71. [2020-10-16 12:31:46,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-16 12:31:46,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 176 transitions. [2020-10-16 12:31:46,188 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 176 transitions. Word has length 24 [2020-10-16 12:31:46,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:46,189 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 176 transitions. [2020-10-16 12:31:46,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-16 12:31:46,189 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 176 transitions. [2020-10-16 12:31:46,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-16 12:31:46,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:46,189 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:46,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2020-10-16 12:31:46,395 INFO L429 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:46,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:46,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1038210688, now seen corresponding path program 66 times [2020-10-16 12:31:46,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:46,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971961609] [2020-10-16 12:31:46,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:46,626 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:46,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971961609] [2020-10-16 12:31:46,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498493225] [2020-10-16 12:31:46,627 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:46,678 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-10-16 12:31:46,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:46,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-16 12:31:46,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:46,693 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:46,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:46,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-10-16 12:31:46,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1250459776] [2020-10-16 12:31:46,694 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:46,696 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:46,701 INFO L258 McrAutomatonBuilder]: Finished intersection with 32 states and 38 transitions. [2020-10-16 12:31:46,702 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:46,705 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:46,705 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:46,734 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [20803#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-16 12:31:46,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-16 12:31:46,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:46,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-16 12:31:46,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:31:46,735 INFO L87 Difference]: Start difference. First operand 71 states and 176 transitions. Second operand 21 states. [2020-10-16 12:31:47,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:47,385 INFO L93 Difference]: Finished difference Result 105 states and 246 transitions. [2020-10-16 12:31:47,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-16 12:31:47,385 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 24 [2020-10-16 12:31:47,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:47,386 INFO L225 Difference]: With dead ends: 105 [2020-10-16 12:31:47,386 INFO L226 Difference]: Without dead ends: 99 [2020-10-16 12:31:47,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=484, Invalid=1408, Unknown=0, NotChecked=0, Total=1892 [2020-10-16 12:31:47,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-16 12:31:47,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 73. [2020-10-16 12:31:47,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-16 12:31:47,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 182 transitions. [2020-10-16 12:31:47,389 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 182 transitions. Word has length 24 [2020-10-16 12:31:47,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:47,389 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 182 transitions. [2020-10-16 12:31:47,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-16 12:31:47,389 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 182 transitions. [2020-10-16 12:31:47,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-16 12:31:47,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:47,390 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:47,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2020-10-16 12:31:47,590 INFO L429 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:47,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:47,591 INFO L82 PathProgramCache]: Analyzing trace with hash 406243170, now seen corresponding path program 67 times [2020-10-16 12:31:47,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:47,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557741324] [2020-10-16 12:31:47,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:47,832 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:47,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557741324] [2020-10-16 12:31:47,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991555486] [2020-10-16 12:31:47,833 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:47,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-16 12:31:47,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:47,941 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:47,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:47,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-10-16 12:31:47,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1937673217] [2020-10-16 12:31:47,942 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:47,956 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:47,963 INFO L258 McrAutomatonBuilder]: Finished intersection with 32 states and 38 transitions. [2020-10-16 12:31:47,963 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:47,974 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:47,975 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:48,001 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [21190#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-16 12:31:48,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-16 12:31:48,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:48,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-16 12:31:48,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:31:48,002 INFO L87 Difference]: Start difference. First operand 73 states and 182 transitions. Second operand 21 states. [2020-10-16 12:31:48,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:48,707 INFO L93 Difference]: Finished difference Result 103 states and 244 transitions. [2020-10-16 12:31:48,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:31:48,707 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 24 [2020-10-16 12:31:48,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:48,709 INFO L225 Difference]: With dead ends: 103 [2020-10-16 12:31:48,709 INFO L226 Difference]: Without dead ends: 97 [2020-10-16 12:31:48,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=534, Invalid=1536, Unknown=0, NotChecked=0, Total=2070 [2020-10-16 12:31:48,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-16 12:31:48,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 75. [2020-10-16 12:31:48,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-16 12:31:48,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 188 transitions. [2020-10-16 12:31:48,713 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 188 transitions. Word has length 24 [2020-10-16 12:31:48,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:48,713 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 188 transitions. [2020-10-16 12:31:48,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-16 12:31:48,713 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 188 transitions. [2020-10-16 12:31:48,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-16 12:31:48,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:48,714 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:48,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2020-10-16 12:31:48,925 INFO L429 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:48,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:48,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1015641916, now seen corresponding path program 68 times [2020-10-16 12:31:48,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:48,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109258231] [2020-10-16 12:31:48,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:49,121 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:49,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109258231] [2020-10-16 12:31:49,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924097539] [2020-10-16 12:31:49,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:49,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:31:49,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:49,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-16 12:31:49,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:49,191 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:49,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:49,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-10-16 12:31:49,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1713083754] [2020-10-16 12:31:49,192 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:49,194 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:49,199 INFO L258 McrAutomatonBuilder]: Finished intersection with 32 states and 38 transitions. [2020-10-16 12:31:49,199 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:49,209 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:49,209 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:49,232 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [21583#(and (<= ~j~0 16) (< ~i~0 46))] [2020-10-16 12:31:49,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-16 12:31:49,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:49,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-16 12:31:49,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:31:49,233 INFO L87 Difference]: Start difference. First operand 75 states and 188 transitions. Second operand 21 states. [2020-10-16 12:31:50,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:50,036 INFO L93 Difference]: Finished difference Result 101 states and 242 transitions. [2020-10-16 12:31:50,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-16 12:31:50,037 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 24 [2020-10-16 12:31:50,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:50,038 INFO L225 Difference]: With dead ends: 101 [2020-10-16 12:31:50,038 INFO L226 Difference]: Without dead ends: 95 [2020-10-16 12:31:50,039 INFO L677 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 [2020-10-16 12:31:50,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-16 12:31:50,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 77. [2020-10-16 12:31:50,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-16 12:31:50,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 194 transitions. [2020-10-16 12:31:50,041 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 194 transitions. Word has length 24 [2020-10-16 12:31:50,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:50,041 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 194 transitions. [2020-10-16 12:31:50,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-16 12:31:50,042 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 194 transitions. [2020-10-16 12:31:50,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-16 12:31:50,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:50,042 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:50,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:50,252 INFO L429 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:50,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:50,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1159412390, now seen corresponding path program 69 times [2020-10-16 12:31:50,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:50,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482249380] [2020-10-16 12:31:50,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:50,453 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:50,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482249380] [2020-10-16 12:31:50,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551451153] [2020-10-16 12:31:50,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:50,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-10-16 12:31:50,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:50,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-16 12:31:50,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:50,527 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:50,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:50,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-10-16 12:31:50,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1070172927] [2020-10-16 12:31:50,528 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:50,530 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:50,534 INFO L258 McrAutomatonBuilder]: Finished intersection with 32 states and 38 transitions. [2020-10-16 12:31:50,534 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:50,537 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:50,537 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:50,568 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [21982#(and (<= ~j~0 18) (< ~i~0 46))] [2020-10-16 12:31:50,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-16 12:31:50,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:50,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-16 12:31:50,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:31:50,569 INFO L87 Difference]: Start difference. First operand 77 states and 194 transitions. Second operand 21 states. [2020-10-16 12:31:51,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:51,472 INFO L93 Difference]: Finished difference Result 99 states and 240 transitions. [2020-10-16 12:31:51,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-16 12:31:51,473 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 24 [2020-10-16 12:31:51,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:51,474 INFO L225 Difference]: With dead ends: 99 [2020-10-16 12:31:51,474 INFO L226 Difference]: Without dead ends: 93 [2020-10-16 12:31:51,475 INFO L677 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 [2020-10-16 12:31:51,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-16 12:31:51,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 79. [2020-10-16 12:31:51,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-16 12:31:51,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 200 transitions. [2020-10-16 12:31:51,477 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 200 transitions. Word has length 24 [2020-10-16 12:31:51,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:51,477 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 200 transitions. [2020-10-16 12:31:51,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-16 12:31:51,477 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 200 transitions. [2020-10-16 12:31:51,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-16 12:31:51,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:51,478 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:51,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:51,681 INFO L429 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:51,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:51,681 INFO L82 PathProgramCache]: Analyzing trace with hash -89719544, now seen corresponding path program 70 times [2020-10-16 12:31:51,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:51,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473279667] [2020-10-16 12:31:51,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:51,862 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:51,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473279667] [2020-10-16 12:31:51,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955573057] [2020-10-16 12:31:51,863 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:51,910 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:31:51,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:51,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-16 12:31:51,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:51,942 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:51,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:51,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-10-16 12:31:51,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [565051875] [2020-10-16 12:31:51,943 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:51,945 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:51,950 INFO L258 McrAutomatonBuilder]: Finished intersection with 32 states and 38 transitions. [2020-10-16 12:31:51,951 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:51,954 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:51,954 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:51,982 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [22387#(and (<= ~j~0 20) (< ~i~0 46))] [2020-10-16 12:31:51,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-16 12:31:51,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:51,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-16 12:31:51,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:31:51,983 INFO L87 Difference]: Start difference. First operand 79 states and 200 transitions. Second operand 21 states. [2020-10-16 12:31:52,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:52,961 INFO L93 Difference]: Finished difference Result 99 states and 243 transitions. [2020-10-16 12:31:52,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-16 12:31:52,962 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 24 [2020-10-16 12:31:52,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:52,963 INFO L225 Difference]: With dead ends: 99 [2020-10-16 12:31:52,963 INFO L226 Difference]: Without dead ends: 93 [2020-10-16 12:31:52,964 INFO L677 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 [2020-10-16 12:31:52,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-16 12:31:52,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 81. [2020-10-16 12:31:52,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-16 12:31:52,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 208 transitions. [2020-10-16 12:31:52,967 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 208 transitions. Word has length 24 [2020-10-16 12:31:52,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:52,968 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 208 transitions. [2020-10-16 12:31:52,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-16 12:31:52,968 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 208 transitions. [2020-10-16 12:31:52,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-16 12:31:52,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:52,968 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:53,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:53,172 INFO L429 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:53,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:53,172 INFO L82 PathProgramCache]: Analyzing trace with hash -73142294, now seen corresponding path program 71 times [2020-10-16 12:31:53,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:53,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167533350] [2020-10-16 12:31:53,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:53,361 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:53,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167533350] [2020-10-16 12:31:53,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018041637] [2020-10-16 12:31:53,361 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:53,410 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-10-16 12:31:53,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:53,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-16 12:31:53,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:53,431 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:53,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:53,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-10-16 12:31:53,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [501449845] [2020-10-16 12:31:53,432 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:53,434 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:53,438 INFO L258 McrAutomatonBuilder]: Finished intersection with 32 states and 38 transitions. [2020-10-16 12:31:53,438 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:53,439 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:53,439 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:53,475 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [22800#(and (<= ~j~0 22) (< ~i~0 46))] [2020-10-16 12:31:53,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-16 12:31:53,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:53,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-16 12:31:53,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:31:53,476 INFO L87 Difference]: Start difference. First operand 81 states and 208 transitions. Second operand 21 states. [2020-10-16 12:31:54,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:54,512 INFO L93 Difference]: Finished difference Result 99 states and 251 transitions. [2020-10-16 12:31:54,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-16 12:31:54,513 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 24 [2020-10-16 12:31:54,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:54,514 INFO L225 Difference]: With dead ends: 99 [2020-10-16 12:31:54,514 INFO L226 Difference]: Without dead ends: 87 [2020-10-16 12:31:54,515 INFO L677 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 [2020-10-16 12:31:54,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-16 12:31:54,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 62. [2020-10-16 12:31:54,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-16 12:31:54,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 152 transitions. [2020-10-16 12:31:54,518 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 152 transitions. Word has length 24 [2020-10-16 12:31:54,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:54,518 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 152 transitions. [2020-10-16 12:31:54,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-16 12:31:54,518 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 152 transitions. [2020-10-16 12:31:54,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:31:54,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:54,519 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:54,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2020-10-16 12:31:54,721 INFO L429 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:54,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:54,721 INFO L82 PathProgramCache]: Analyzing trace with hash 674366672, now seen corresponding path program 72 times [2020-10-16 12:31:54,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:54,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349691067] [2020-10-16 12:31:54,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:54,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:54,982 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:54,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349691067] [2020-10-16 12:31:54,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587801026] [2020-10-16 12:31:54,985 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:55,045 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-10-16 12:31:55,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:55,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-16 12:31:55,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:55,056 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:55,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:55,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-10-16 12:31:55,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [656017261] [2020-10-16 12:31:55,057 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:55,059 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:55,064 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 45 transitions. [2020-10-16 12:31:55,064 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:55,067 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:55,067 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:55,094 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:55,095 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:55,115 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:55,116 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:55,130 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:55,130 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:55,136 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [23183#(and (<= ~j~0 4) (< ~i~0 46))] [2020-10-16 12:31:55,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-16 12:31:55,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:55,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-16 12:31:55,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:31:55,138 INFO L87 Difference]: Start difference. First operand 62 states and 152 transitions. Second operand 22 states. [2020-10-16 12:31:55,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:55,651 INFO L93 Difference]: Finished difference Result 96 states and 224 transitions. [2020-10-16 12:31:55,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-16 12:31:55,652 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25 [2020-10-16 12:31:55,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:55,653 INFO L225 Difference]: With dead ends: 96 [2020-10-16 12:31:55,653 INFO L226 Difference]: Without dead ends: 90 [2020-10-16 12:31:55,654 INFO L677 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 [2020-10-16 12:31:55,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-16 12:31:55,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 70. [2020-10-16 12:31:55,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-16 12:31:55,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 172 transitions. [2020-10-16 12:31:55,657 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 172 transitions. Word has length 25 [2020-10-16 12:31:55,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:55,657 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 172 transitions. [2020-10-16 12:31:55,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-16 12:31:55,657 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 172 transitions. [2020-10-16 12:31:55,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:31:55,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:55,657 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:55,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:55,858 INFO L429 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:55,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:55,859 INFO L82 PathProgramCache]: Analyzing trace with hash 2119386162, now seen corresponding path program 73 times [2020-10-16 12:31:55,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:55,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044628673] [2020-10-16 12:31:55,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:56,131 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:56,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044628673] [2020-10-16 12:31:56,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269133817] [2020-10-16 12:31:56,132 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:56,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:56,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-16 12:31:56,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:56,195 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:56,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:56,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-10-16 12:31:56,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [480420473] [2020-10-16 12:31:56,195 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:56,197 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:56,202 INFO L258 McrAutomatonBuilder]: Finished intersection with 31 states and 35 transitions. [2020-10-16 12:31:56,202 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:56,214 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:56,214 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:56,239 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [23551#(and (<= ~j~0 6) (< ~i~0 46))] [2020-10-16 12:31:56,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-16 12:31:56,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:56,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-16 12:31:56,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:31:56,240 INFO L87 Difference]: Start difference. First operand 70 states and 172 transitions. Second operand 22 states. [2020-10-16 12:31:56,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:56,851 INFO L93 Difference]: Finished difference Result 132 states and 298 transitions. [2020-10-16 12:31:56,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-16 12:31:56,851 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25 [2020-10-16 12:31:56,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:56,853 INFO L225 Difference]: With dead ends: 132 [2020-10-16 12:31:56,853 INFO L226 Difference]: Without dead ends: 126 [2020-10-16 12:31:56,853 INFO L677 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 [2020-10-16 12:31:56,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-16 12:31:56,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 72. [2020-10-16 12:31:56,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-16 12:31:56,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 178 transitions. [2020-10-16 12:31:56,858 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 178 transitions. Word has length 25 [2020-10-16 12:31:56,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:56,858 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 178 transitions. [2020-10-16 12:31:56,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-16 12:31:56,858 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 178 transitions. [2020-10-16 12:31:56,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:31:56,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:56,859 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:57,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:57,069 INFO L429 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:57,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:57,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1361114132, now seen corresponding path program 74 times [2020-10-16 12:31:57,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:57,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17514408] [2020-10-16 12:31:57,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:57,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:57,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17514408] [2020-10-16 12:31:57,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263465588] [2020-10-16 12:31:57,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:57,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:31:57,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:57,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-16 12:31:57,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:57,362 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:57,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:57,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-10-16 12:31:57,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [269467427] [2020-10-16 12:31:57,363 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:57,366 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:57,371 INFO L258 McrAutomatonBuilder]: Finished intersection with 31 states and 35 transitions. [2020-10-16 12:31:57,371 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:57,379 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:57,380 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:57,404 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [23967#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-16 12:31:57,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-16 12:31:57,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:57,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-16 12:31:57,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:31:57,405 INFO L87 Difference]: Start difference. First operand 72 states and 178 transitions. Second operand 22 states. [2020-10-16 12:31:58,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:58,087 INFO L93 Difference]: Finished difference Result 129 states and 294 transitions. [2020-10-16 12:31:58,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:31:58,088 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25 [2020-10-16 12:31:58,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:58,089 INFO L225 Difference]: With dead ends: 129 [2020-10-16 12:31:58,089 INFO L226 Difference]: Without dead ends: 123 [2020-10-16 12:31:58,090 INFO L677 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 [2020-10-16 12:31:58,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-16 12:31:58,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 74. [2020-10-16 12:31:58,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-16 12:31:58,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 184 transitions. [2020-10-16 12:31:58,092 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 184 transitions. Word has length 25 [2020-10-16 12:31:58,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:58,092 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 184 transitions. [2020-10-16 12:31:58,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-16 12:31:58,093 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 184 transitions. [2020-10-16 12:31:58,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:31:58,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:58,093 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:58,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:58,297 INFO L429 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:58,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:58,297 INFO L82 PathProgramCache]: Analyzing trace with hash -369281930, now seen corresponding path program 75 times [2020-10-16 12:31:58,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:58,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664938163] [2020-10-16 12:31:58,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:58,529 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:58,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664938163] [2020-10-16 12:31:58,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6990460] [2020-10-16 12:31:58,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:58,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-10-16 12:31:58,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:58,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-16 12:31:58,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:58,597 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:58,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:58,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-10-16 12:31:58,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [688312021] [2020-10-16 12:31:58,597 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:58,600 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:58,604 INFO L258 McrAutomatonBuilder]: Finished intersection with 31 states and 35 transitions. [2020-10-16 12:31:58,605 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:58,612 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:58,612 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:58,638 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [24388#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-16 12:31:58,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-16 12:31:58,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:58,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-16 12:31:58,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:31:58,640 INFO L87 Difference]: Start difference. First operand 74 states and 184 transitions. Second operand 22 states. [2020-10-16 12:31:59,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:59,407 INFO L93 Difference]: Finished difference Result 127 states and 292 transitions. [2020-10-16 12:31:59,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-16 12:31:59,407 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25 [2020-10-16 12:31:59,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:59,409 INFO L225 Difference]: With dead ends: 127 [2020-10-16 12:31:59,409 INFO L226 Difference]: Without dead ends: 121 [2020-10-16 12:31:59,409 INFO L677 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 [2020-10-16 12:31:59,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-16 12:31:59,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 76. [2020-10-16 12:31:59,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-16 12:31:59,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 190 transitions. [2020-10-16 12:31:59,412 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 190 transitions. Word has length 25 [2020-10-16 12:31:59,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:59,412 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 190 transitions. [2020-10-16 12:31:59,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-16 12:31:59,413 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 190 transitions. [2020-10-16 12:31:59,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:31:59,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:59,413 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:59,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2020-10-16 12:31:59,616 INFO L429 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:31:59,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:59,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1001249448, now seen corresponding path program 76 times [2020-10-16 12:31:59,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:59,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938840210] [2020-10-16 12:31:59,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:59,842 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:59,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938840210] [2020-10-16 12:31:59,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79855489] [2020-10-16 12:31:59,843 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:31:59,889 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:31:59,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:31:59,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-16 12:31:59,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:31:59,906 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:59,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:31:59,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-10-16 12:31:59,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1878806625] [2020-10-16 12:31:59,907 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:59,910 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:59,915 INFO L258 McrAutomatonBuilder]: Finished intersection with 31 states and 35 transitions. [2020-10-16 12:31:59,916 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:59,916 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:31:59,917 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:31:59,946 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [24815#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-16 12:31:59,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-16 12:31:59,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:59,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-16 12:31:59,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:31:59,947 INFO L87 Difference]: Start difference. First operand 76 states and 190 transitions. Second operand 22 states. [2020-10-16 12:32:00,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:00,806 INFO L93 Difference]: Finished difference Result 125 states and 290 transitions. [2020-10-16 12:32:00,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-16 12:32:00,807 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25 [2020-10-16 12:32:00,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:00,808 INFO L225 Difference]: With dead ends: 125 [2020-10-16 12:32:00,808 INFO L226 Difference]: Without dead ends: 119 [2020-10-16 12:32:00,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=674, Invalid=1876, Unknown=0, NotChecked=0, Total=2550 [2020-10-16 12:32:00,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-16 12:32:00,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 78. [2020-10-16 12:32:00,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-16 12:32:00,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 196 transitions. [2020-10-16 12:32:00,811 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 196 transitions. Word has length 25 [2020-10-16 12:32:00,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:00,812 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 196 transitions. [2020-10-16 12:32:00,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-16 12:32:00,812 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 196 transitions. [2020-10-16 12:32:00,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:32:00,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:00,812 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:01,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:01,021 INFO L429 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:01,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:01,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1871832762, now seen corresponding path program 77 times [2020-10-16 12:32:01,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:01,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795058178] [2020-10-16 12:32:01,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:01,245 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:01,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795058178] [2020-10-16 12:32:01,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12146581] [2020-10-16 12:32:01,246 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:01,298 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-10-16 12:32:01,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:32:01,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-16 12:32:01,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:01,321 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:01,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:01,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-10-16 12:32:01,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2120891581] [2020-10-16 12:32:01,322 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:01,324 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:01,330 INFO L258 McrAutomatonBuilder]: Finished intersection with 31 states and 35 transitions. [2020-10-16 12:32:01,331 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:01,347 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:01,348 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:01,374 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [25248#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-16 12:32:01,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-16 12:32:01,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:01,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-16 12:32:01,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:32:01,375 INFO L87 Difference]: Start difference. First operand 78 states and 196 transitions. Second operand 22 states. [2020-10-16 12:32:02,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:02,311 INFO L93 Difference]: Finished difference Result 123 states and 288 transitions. [2020-10-16 12:32:02,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-16 12:32:02,312 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25 [2020-10-16 12:32:02,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:02,313 INFO L225 Difference]: With dead ends: 123 [2020-10-16 12:32:02,313 INFO L226 Difference]: Without dead ends: 117 [2020-10-16 12:32:02,314 INFO L677 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 [2020-10-16 12:32:02,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-16 12:32:02,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 80. [2020-10-16 12:32:02,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-16 12:32:02,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 202 transitions. [2020-10-16 12:32:02,317 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 202 transitions. Word has length 25 [2020-10-16 12:32:02,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:02,317 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 202 transitions. [2020-10-16 12:32:02,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-16 12:32:02,318 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 202 transitions. [2020-10-16 12:32:02,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:32:02,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:02,319 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:02,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:02,519 INFO L429 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:02,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:02,520 INFO L82 PathProgramCache]: Analyzing trace with hash -248080228, now seen corresponding path program 78 times [2020-10-16 12:32:02,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:02,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397052319] [2020-10-16 12:32:02,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:02,729 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:02,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397052319] [2020-10-16 12:32:02,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926821316] [2020-10-16 12:32:02,729 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:02,780 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-10-16 12:32:02,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:32:02,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-16 12:32:02,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:02,800 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:02,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:02,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-10-16 12:32:02,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1471617993] [2020-10-16 12:32:02,801 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:02,803 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:02,807 INFO L258 McrAutomatonBuilder]: Finished intersection with 31 states and 35 transitions. [2020-10-16 12:32:02,807 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:02,822 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:02,822 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:02,845 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [25687#(and (<= ~j~0 16) (< ~i~0 46))] [2020-10-16 12:32:02,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-16 12:32:02,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:02,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-16 12:32:02,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:32:02,847 INFO L87 Difference]: Start difference. First operand 80 states and 202 transitions. Second operand 22 states. [2020-10-16 12:32:03,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:03,848 INFO L93 Difference]: Finished difference Result 121 states and 286 transitions. [2020-10-16 12:32:03,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-16 12:32:03,849 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25 [2020-10-16 12:32:03,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:03,850 INFO L225 Difference]: With dead ends: 121 [2020-10-16 12:32:03,850 INFO L226 Difference]: Without dead ends: 115 [2020-10-16 12:32:03,851 INFO L677 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 [2020-10-16 12:32:03,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-16 12:32:03,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 82. [2020-10-16 12:32:03,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-16 12:32:03,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 208 transitions. [2020-10-16 12:32:03,853 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 208 transitions. Word has length 25 [2020-10-16 12:32:03,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:03,854 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 208 transitions. [2020-10-16 12:32:03,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-16 12:32:03,854 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 208 transitions. [2020-10-16 12:32:03,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:32:03,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:03,854 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:04,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2020-10-16 12:32:04,055 INFO L429 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:04,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:04,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1497212162, now seen corresponding path program 79 times [2020-10-16 12:32:04,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:04,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123757813] [2020-10-16 12:32:04,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:04,279 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:04,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123757813] [2020-10-16 12:32:04,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925586968] [2020-10-16 12:32:04,280 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:04,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-16 12:32:04,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:04,391 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:04,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:04,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-10-16 12:32:04,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [483053910] [2020-10-16 12:32:04,392 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:04,397 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:04,406 INFO L258 McrAutomatonBuilder]: Finished intersection with 31 states and 35 transitions. [2020-10-16 12:32:04,406 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:04,420 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:04,421 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:04,451 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [26132#(and (<= ~j~0 18) (< ~i~0 46))] [2020-10-16 12:32:04,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-16 12:32:04,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:04,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-16 12:32:04,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:32:04,452 INFO L87 Difference]: Start difference. First operand 82 states and 208 transitions. Second operand 22 states. [2020-10-16 12:32:05,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:05,867 INFO L93 Difference]: Finished difference Result 121 states and 289 transitions. [2020-10-16 12:32:05,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-16 12:32:05,868 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25 [2020-10-16 12:32:05,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:05,869 INFO L225 Difference]: With dead ends: 121 [2020-10-16 12:32:05,869 INFO L226 Difference]: Without dead ends: 115 [2020-10-16 12:32:05,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=959, Invalid=2233, Unknown=0, NotChecked=0, Total=3192 [2020-10-16 12:32:05,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-16 12:32:05,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 84. [2020-10-16 12:32:05,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-16 12:32:05,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 216 transitions. [2020-10-16 12:32:05,872 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 216 transitions. Word has length 25 [2020-10-16 12:32:05,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:05,872 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 216 transitions. [2020-10-16 12:32:05,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-16 12:32:05,873 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 216 transitions. [2020-10-16 12:32:05,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:32:05,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:05,877 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:06,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:06,087 INFO L429 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:06,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:06,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1480634912, now seen corresponding path program 80 times [2020-10-16 12:32:06,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:06,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113718901] [2020-10-16 12:32:06,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:06,288 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:06,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113718901] [2020-10-16 12:32:06,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833523082] [2020-10-16 12:32:06,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:06,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:32:06,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:32:06,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-16 12:32:06,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:06,356 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:06,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:06,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-10-16 12:32:06,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [110783244] [2020-10-16 12:32:06,357 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:06,360 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:06,366 INFO L258 McrAutomatonBuilder]: Finished intersection with 31 states and 35 transitions. [2020-10-16 12:32:06,367 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:06,375 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:06,376 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:06,407 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [26585#(and (<= ~j~0 20) (< ~i~0 46))] [2020-10-16 12:32:06,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-16 12:32:06,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:06,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-16 12:32:06,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:32:06,408 INFO L87 Difference]: Start difference. First operand 84 states and 216 transitions. Second operand 22 states. [2020-10-16 12:32:07,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:07,545 INFO L93 Difference]: Finished difference Result 122 states and 299 transitions. [2020-10-16 12:32:07,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-16 12:32:07,546 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25 [2020-10-16 12:32:07,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:07,546 INFO L225 Difference]: With dead ends: 122 [2020-10-16 12:32:07,547 INFO L226 Difference]: Without dead ends: 110 [2020-10-16 12:32:07,547 INFO L677 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 [2020-10-16 12:32:07,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-16 12:32:07,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 66. [2020-10-16 12:32:07,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-16 12:32:07,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 161 transitions. [2020-10-16 12:32:07,549 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 161 transitions. Word has length 25 [2020-10-16 12:32:07,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:07,549 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 161 transitions. [2020-10-16 12:32:07,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-16 12:32:07,550 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 161 transitions. [2020-10-16 12:32:07,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-16 12:32:07,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:07,550 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:07,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:07,759 INFO L429 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:07,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:07,760 INFO L82 PathProgramCache]: Analyzing trace with hash 601326971, now seen corresponding path program 81 times [2020-10-16 12:32:07,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:07,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414570048] [2020-10-16 12:32:07,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:08,063 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:08,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414570048] [2020-10-16 12:32:08,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401115651] [2020-10-16 12:32:08,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:08,116 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-10-16 12:32:08,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:32:08,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-16 12:32:08,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:08,129 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:08,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:08,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2020-10-16 12:32:08,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1205838523] [2020-10-16 12:32:08,130 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:08,132 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:08,137 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 42 transitions. [2020-10-16 12:32:08,137 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:08,141 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:08,141 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:08,173 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [27011#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-16 12:32:08,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-16 12:32:08,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:08,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-16 12:32:08,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:32:08,174 INFO L87 Difference]: Start difference. First operand 66 states and 161 transitions. Second operand 23 states. [2020-10-16 12:32:08,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:08,778 INFO L93 Difference]: Finished difference Result 118 states and 270 transitions. [2020-10-16 12:32:08,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-16 12:32:08,779 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 26 [2020-10-16 12:32:08,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:08,780 INFO L225 Difference]: With dead ends: 118 [2020-10-16 12:32:08,780 INFO L226 Difference]: Without dead ends: 112 [2020-10-16 12:32:08,780 INFO L677 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 [2020-10-16 12:32:08,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-16 12:32:08,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 73. [2020-10-16 12:32:08,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-16 12:32:08,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 180 transitions. [2020-10-16 12:32:08,783 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 180 transitions. Word has length 26 [2020-10-16 12:32:08,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:08,783 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 180 transitions. [2020-10-16 12:32:08,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-16 12:32:08,783 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 180 transitions. [2020-10-16 12:32:08,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-16 12:32:08,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:08,784 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:08,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:08,985 INFO L429 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:08,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:08,985 INFO L82 PathProgramCache]: Analyzing trace with hash 2046346461, now seen corresponding path program 82 times [2020-10-16 12:32:08,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:08,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170843704] [2020-10-16 12:32:08,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:09,281 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:09,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170843704] [2020-10-16 12:32:09,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175062602] [2020-10-16 12:32:09,282 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:09,331 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:32:09,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:32:09,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-16 12:32:09,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:09,345 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:09,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:09,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2020-10-16 12:32:09,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [854799105] [2020-10-16 12:32:09,346 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:09,348 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:09,354 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 40 transitions. [2020-10-16 12:32:09,354 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:09,358 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:09,359 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:09,393 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [27415#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-16 12:32:09,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-16 12:32:09,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:09,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-16 12:32:09,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:32:09,394 INFO L87 Difference]: Start difference. First operand 73 states and 180 transitions. Second operand 23 states. [2020-10-16 12:32:10,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:10,078 INFO L93 Difference]: Finished difference Result 115 states and 266 transitions. [2020-10-16 12:32:10,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-16 12:32:10,078 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 26 [2020-10-16 12:32:10,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:10,080 INFO L225 Difference]: With dead ends: 115 [2020-10-16 12:32:10,080 INFO L226 Difference]: Without dead ends: 109 [2020-10-16 12:32:10,080 INFO L677 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 [2020-10-16 12:32:10,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-16 12:32:10,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 75. [2020-10-16 12:32:10,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-16 12:32:10,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 186 transitions. [2020-10-16 12:32:10,082 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 186 transitions. Word has length 26 [2020-10-16 12:32:10,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:10,082 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 186 transitions. [2020-10-16 12:32:10,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-16 12:32:10,082 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 186 transitions. [2020-10-16 12:32:10,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-16 12:32:10,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:10,082 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:10,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:10,283 INFO L429 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:10,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:10,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1288074431, now seen corresponding path program 83 times [2020-10-16 12:32:10,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:10,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726852079] [2020-10-16 12:32:10,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:10,554 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:10,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726852079] [2020-10-16 12:32:10,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975675457] [2020-10-16 12:32:10,555 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:10,605 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-10-16 12:32:10,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:32:10,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-16 12:32:10,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:10,620 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:10,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:10,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2020-10-16 12:32:10,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [688213776] [2020-10-16 12:32:10,621 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:10,623 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:10,629 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 40 transitions. [2020-10-16 12:32:10,629 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:10,633 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:10,633 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:10,662 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [27824#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-16 12:32:10,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-16 12:32:10,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:10,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-16 12:32:10,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:32:10,663 INFO L87 Difference]: Start difference. First operand 75 states and 186 transitions. Second operand 23 states. [2020-10-16 12:32:11,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:11,414 INFO L93 Difference]: Finished difference Result 113 states and 264 transitions. [2020-10-16 12:32:11,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:32:11,415 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 26 [2020-10-16 12:32:11,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:11,416 INFO L225 Difference]: With dead ends: 113 [2020-10-16 12:32:11,416 INFO L226 Difference]: Without dead ends: 107 [2020-10-16 12:32:11,417 INFO L677 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 [2020-10-16 12:32:11,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-16 12:32:11,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 77. [2020-10-16 12:32:11,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-16 12:32:11,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 192 transitions. [2020-10-16 12:32:11,420 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 192 transitions. Word has length 26 [2020-10-16 12:32:11,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:11,420 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 192 transitions. [2020-10-16 12:32:11,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-16 12:32:11,421 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 192 transitions. [2020-10-16 12:32:11,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-16 12:32:11,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:11,422 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:11,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:11,623 INFO L429 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:11,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:11,623 INFO L82 PathProgramCache]: Analyzing trace with hash -442321631, now seen corresponding path program 84 times [2020-10-16 12:32:11,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:11,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943936878] [2020-10-16 12:32:11,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:11,863 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:11,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943936878] [2020-10-16 12:32:11,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118606116] [2020-10-16 12:32:11,864 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:11,914 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-10-16 12:32:11,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:32:11,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-16 12:32:11,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:11,932 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:11,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:11,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2020-10-16 12:32:11,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [430627875] [2020-10-16 12:32:11,933 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:11,935 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:11,941 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 40 transitions. [2020-10-16 12:32:11,941 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:11,950 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:11,950 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:11,982 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [28239#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-16 12:32:11,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-16 12:32:11,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:11,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-16 12:32:11,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:32:11,983 INFO L87 Difference]: Start difference. First operand 77 states and 192 transitions. Second operand 23 states. [2020-10-16 12:32:12,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:12,844 INFO L93 Difference]: Finished difference Result 111 states and 262 transitions. [2020-10-16 12:32:12,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-16 12:32:12,845 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 26 [2020-10-16 12:32:12,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:12,846 INFO L225 Difference]: With dead ends: 111 [2020-10-16 12:32:12,846 INFO L226 Difference]: Without dead ends: 105 [2020-10-16 12:32:12,846 INFO L677 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 [2020-10-16 12:32:12,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-16 12:32:12,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 79. [2020-10-16 12:32:12,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-16 12:32:12,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 198 transitions. [2020-10-16 12:32:12,849 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 198 transitions. Word has length 26 [2020-10-16 12:32:12,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:12,849 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 198 transitions. [2020-10-16 12:32:12,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-16 12:32:12,849 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 198 transitions. [2020-10-16 12:32:12,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-16 12:32:12,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:12,850 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:13,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:13,051 INFO L429 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:13,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:13,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1074289149, now seen corresponding path program 85 times [2020-10-16 12:32:13,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:13,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534877466] [2020-10-16 12:32:13,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:13,303 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:13,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534877466] [2020-10-16 12:32:13,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263922536] [2020-10-16 12:32:13,304 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:13,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-16 12:32:13,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:13,372 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:13,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:13,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2020-10-16 12:32:13,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [91537434] [2020-10-16 12:32:13,373 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:13,375 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:13,380 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 40 transitions. [2020-10-16 12:32:13,380 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:13,388 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:13,389 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:13,415 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [28660#(and (<= ~j~0 16) (< ~i~0 46))] [2020-10-16 12:32:13,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-16 12:32:13,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:13,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-16 12:32:13,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:32:13,417 INFO L87 Difference]: Start difference. First operand 79 states and 198 transitions. Second operand 23 states. [2020-10-16 12:32:14,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:14,354 INFO L93 Difference]: Finished difference Result 109 states and 260 transitions. [2020-10-16 12:32:14,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-16 12:32:14,355 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 26 [2020-10-16 12:32:14,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:14,356 INFO L225 Difference]: With dead ends: 109 [2020-10-16 12:32:14,356 INFO L226 Difference]: Without dead ends: 103 [2020-10-16 12:32:14,356 INFO L677 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 [2020-10-16 12:32:14,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-16 12:32:14,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 81. [2020-10-16 12:32:14,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-16 12:32:14,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 204 transitions. [2020-10-16 12:32:14,360 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 204 transitions. Word has length 26 [2020-10-16 12:32:14,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:14,360 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 204 transitions. [2020-10-16 12:32:14,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-16 12:32:14,360 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 204 transitions. [2020-10-16 12:32:14,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-16 12:32:14,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:14,360 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:14,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2020-10-16 12:32:14,561 INFO L429 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:14,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:14,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1798793061, now seen corresponding path program 86 times [2020-10-16 12:32:14,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:14,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948134877] [2020-10-16 12:32:14,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:14,795 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:14,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948134877] [2020-10-16 12:32:14,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426769233] [2020-10-16 12:32:14,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:14,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:32:14,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:32:14,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-16 12:32:14,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:14,866 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:14,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:14,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2020-10-16 12:32:14,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1243327331] [2020-10-16 12:32:14,867 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:14,870 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:14,877 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 40 transitions. [2020-10-16 12:32:14,877 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:14,881 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:14,881 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:14,913 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [29087#(and (<= ~j~0 18) (< ~i~0 46))] [2020-10-16 12:32:14,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-16 12:32:14,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:14,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-16 12:32:14,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:32:14,914 INFO L87 Difference]: Start difference. First operand 81 states and 204 transitions. Second operand 23 states. [2020-10-16 12:32:15,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:15,944 INFO L93 Difference]: Finished difference Result 107 states and 258 transitions. [2020-10-16 12:32:15,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-16 12:32:15,945 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 26 [2020-10-16 12:32:15,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:15,945 INFO L225 Difference]: With dead ends: 107 [2020-10-16 12:32:15,945 INFO L226 Difference]: Without dead ends: 101 [2020-10-16 12:32:15,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=767, Invalid=2095, Unknown=0, NotChecked=0, Total=2862 [2020-10-16 12:32:15,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-16 12:32:15,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 83. [2020-10-16 12:32:15,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-16 12:32:15,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 210 transitions. [2020-10-16 12:32:15,949 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 210 transitions. Word has length 26 [2020-10-16 12:32:15,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:15,949 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 210 transitions. [2020-10-16 12:32:15,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-16 12:32:15,949 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 210 transitions. [2020-10-16 12:32:15,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-16 12:32:15,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:15,950 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:16,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:16,158 INFO L429 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:16,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:16,158 INFO L82 PathProgramCache]: Analyzing trace with hash -321119929, now seen corresponding path program 87 times [2020-10-16 12:32:16,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:16,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445260742] [2020-10-16 12:32:16,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:16,388 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:16,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445260742] [2020-10-16 12:32:16,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027819323] [2020-10-16 12:32:16,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:16,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-10-16 12:32:16,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:32:16,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-16 12:32:16,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:16,535 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:16,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:16,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2020-10-16 12:32:16,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [606718334] [2020-10-16 12:32:16,536 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:16,539 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:16,548 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 40 transitions. [2020-10-16 12:32:16,549 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:16,555 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:16,555 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:16,598 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [29520#(and (<= ~j~0 20) (< ~i~0 46))] [2020-10-16 12:32:16,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-16 12:32:16,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:16,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-16 12:32:16,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:32:16,600 INFO L87 Difference]: Start difference. First operand 83 states and 210 transitions. Second operand 23 states. [2020-10-16 12:32:17,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:17,703 INFO L93 Difference]: Finished difference Result 105 states and 256 transitions. [2020-10-16 12:32:17,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-16 12:32:17,704 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 26 [2020-10-16 12:32:17,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:17,705 INFO L225 Difference]: With dead ends: 105 [2020-10-16 12:32:17,705 INFO L226 Difference]: Without dead ends: 99 [2020-10-16 12:32:17,705 INFO L677 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 [2020-10-16 12:32:17,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-16 12:32:17,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 85. [2020-10-16 12:32:17,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-16 12:32:17,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 216 transitions. [2020-10-16 12:32:17,708 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 216 transitions. Word has length 26 [2020-10-16 12:32:17,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:17,708 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 216 transitions. [2020-10-16 12:32:17,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-16 12:32:17,709 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 216 transitions. [2020-10-16 12:32:17,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-16 12:32:17,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:17,709 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:17,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2020-10-16 12:32:17,917 INFO L429 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:17,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:17,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1570251863, now seen corresponding path program 88 times [2020-10-16 12:32:17,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:17,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580789010] [2020-10-16 12:32:17,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:18,145 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:18,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580789010] [2020-10-16 12:32:18,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013872333] [2020-10-16 12:32:18,146 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:18,193 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:32:18,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:32:18,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-16 12:32:18,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:18,216 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:18,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:18,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2020-10-16 12:32:18,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2073580592] [2020-10-16 12:32:18,217 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:18,219 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:18,226 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 40 transitions. [2020-10-16 12:32:18,226 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:18,231 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:18,231 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:18,261 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [29959#(and (<= ~j~0 22) (< ~i~0 46))] [2020-10-16 12:32:18,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-16 12:32:18,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:18,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-16 12:32:18,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:32:18,262 INFO L87 Difference]: Start difference. First operand 85 states and 216 transitions. Second operand 23 states. [2020-10-16 12:32:19,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:19,393 INFO L93 Difference]: Finished difference Result 105 states and 259 transitions. [2020-10-16 12:32:19,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-16 12:32:19,394 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 26 [2020-10-16 12:32:19,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:19,395 INFO L225 Difference]: With dead ends: 105 [2020-10-16 12:32:19,395 INFO L226 Difference]: Without dead ends: 99 [2020-10-16 12:32:19,396 INFO L677 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 [2020-10-16 12:32:19,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-16 12:32:19,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 87. [2020-10-16 12:32:19,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-16 12:32:19,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 224 transitions. [2020-10-16 12:32:19,399 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 224 transitions. Word has length 26 [2020-10-16 12:32:19,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:19,399 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 224 transitions. [2020-10-16 12:32:19,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-16 12:32:19,400 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 224 transitions. [2020-10-16 12:32:19,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-16 12:32:19,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:19,400 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:19,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2020-10-16 12:32:19,609 INFO L429 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:19,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:19,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1553674613, now seen corresponding path program 89 times [2020-10-16 12:32:19,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:19,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915016751] [2020-10-16 12:32:19,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:19,840 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:19,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915016751] [2020-10-16 12:32:19,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89210170] [2020-10-16 12:32:19,840 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:19,891 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-10-16 12:32:19,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:32:19,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-16 12:32:19,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:19,922 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:19,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:19,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2020-10-16 12:32:19,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [772342459] [2020-10-16 12:32:19,923 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:19,926 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:19,932 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 40 transitions. [2020-10-16 12:32:19,933 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:19,937 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:19,938 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:19,976 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [30406#(and (<= ~j~0 24) (< ~i~0 46))] [2020-10-16 12:32:19,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-16 12:32:19,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:19,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-16 12:32:19,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:32:19,977 INFO L87 Difference]: Start difference. First operand 87 states and 224 transitions. Second operand 23 states. [2020-10-16 12:32:21,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:21,222 INFO L93 Difference]: Finished difference Result 105 states and 267 transitions. [2020-10-16 12:32:21,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-16 12:32:21,223 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 26 [2020-10-16 12:32:21,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:21,223 INFO L225 Difference]: With dead ends: 105 [2020-10-16 12:32:21,223 INFO L226 Difference]: Without dead ends: 93 [2020-10-16 12:32:21,224 INFO L677 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 [2020-10-16 12:32:21,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-16 12:32:21,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 66. [2020-10-16 12:32:21,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-16 12:32:21,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 162 transitions. [2020-10-16 12:32:21,226 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 162 transitions. Word has length 26 [2020-10-16 12:32:21,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:21,226 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 162 transitions. [2020-10-16 12:32:21,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-16 12:32:21,226 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 162 transitions. [2020-10-16 12:32:21,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-16 12:32:21,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:21,227 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:21,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:21,427 INFO L429 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:21,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:21,428 INFO L82 PathProgramCache]: Analyzing trace with hash -473673969, now seen corresponding path program 90 times [2020-10-16 12:32:21,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:21,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437901157] [2020-10-16 12:32:21,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:21,749 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:21,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437901157] [2020-10-16 12:32:21,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128711053] [2020-10-16 12:32:21,750 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:21,803 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-10-16 12:32:21,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:32:21,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-16 12:32:21,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:21,825 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:21,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:21,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2020-10-16 12:32:21,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1985682812] [2020-10-16 12:32:21,826 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:21,829 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:21,837 INFO L258 McrAutomatonBuilder]: Finished intersection with 37 states and 47 transitions. [2020-10-16 12:32:21,838 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:21,847 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:21,847 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:21,876 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:21,876 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:21,901 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:21,901 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:21,907 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:21,907 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:21,913 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [30819#(and (<= ~j~0 4) (< ~i~0 46))] [2020-10-16 12:32:21,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-16 12:32:21,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:21,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-16 12:32:21,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:32:21,914 INFO L87 Difference]: Start difference. First operand 66 states and 162 transitions. Second operand 24 states. [2020-10-16 12:32:22,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:22,727 INFO L93 Difference]: Finished difference Result 102 states and 238 transitions. [2020-10-16 12:32:22,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-16 12:32:22,728 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27 [2020-10-16 12:32:22,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:22,729 INFO L225 Difference]: With dead ends: 102 [2020-10-16 12:32:22,729 INFO L226 Difference]: Without dead ends: 96 [2020-10-16 12:32:22,730 INFO L677 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 [2020-10-16 12:32:22,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-16 12:32:22,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 74. [2020-10-16 12:32:22,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-16 12:32:22,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 182 transitions. [2020-10-16 12:32:22,733 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 182 transitions. Word has length 27 [2020-10-16 12:32:22,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:22,733 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 182 transitions. [2020-10-16 12:32:22,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-16 12:32:22,734 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 182 transitions. [2020-10-16 12:32:22,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-16 12:32:22,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:22,735 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:22,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:22,944 INFO L429 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:22,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:22,945 INFO L82 PathProgramCache]: Analyzing trace with hash 915619313, now seen corresponding path program 91 times [2020-10-16 12:32:22,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:22,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808876716] [2020-10-16 12:32:22,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:23,260 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:23,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808876716] [2020-10-16 12:32:23,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384513617] [2020-10-16 12:32:23,261 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:23,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-16 12:32:23,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:23,320 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:23,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:23,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2020-10-16 12:32:23,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1039692733] [2020-10-16 12:32:23,321 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:23,323 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:23,329 INFO L258 McrAutomatonBuilder]: Finished intersection with 33 states and 37 transitions. [2020-10-16 12:32:23,329 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:23,338 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:23,338 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:23,374 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [31213#(and (<= ~j~0 6) (< ~i~0 46))] [2020-10-16 12:32:23,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-16 12:32:23,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:23,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-16 12:32:23,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:32:23,375 INFO L87 Difference]: Start difference. First operand 74 states and 182 transitions. Second operand 24 states. [2020-10-16 12:32:24,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:24,116 INFO L93 Difference]: Finished difference Result 142 states and 320 transitions. [2020-10-16 12:32:24,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:32:24,117 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27 [2020-10-16 12:32:24,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:24,117 INFO L225 Difference]: With dead ends: 142 [2020-10-16 12:32:24,117 INFO L226 Difference]: Without dead ends: 136 [2020-10-16 12:32:24,118 INFO L677 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 [2020-10-16 12:32:24,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-16 12:32:24,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 76. [2020-10-16 12:32:24,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-16 12:32:24,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 188 transitions. [2020-10-16 12:32:24,120 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 188 transitions. Word has length 27 [2020-10-16 12:32:24,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:24,120 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 188 transitions. [2020-10-16 12:32:24,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-16 12:32:24,121 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 188 transitions. [2020-10-16 12:32:24,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-16 12:32:24,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:24,121 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:24,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:24,322 INFO L429 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:24,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:24,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1934328493, now seen corresponding path program 92 times [2020-10-16 12:32:24,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:24,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687258835] [2020-10-16 12:32:24,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:24,621 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:24,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687258835] [2020-10-16 12:32:24,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703374425] [2020-10-16 12:32:24,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:24,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:32:24,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:32:24,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-16 12:32:24,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:24,683 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:24,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:24,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2020-10-16 12:32:24,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1486237683] [2020-10-16 12:32:24,684 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:24,686 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:24,692 INFO L258 McrAutomatonBuilder]: Finished intersection with 33 states and 37 transitions. [2020-10-16 12:32:24,693 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:24,697 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:24,697 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:24,728 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [31659#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-16 12:32:24,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-16 12:32:24,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:24,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-16 12:32:24,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:32:24,729 INFO L87 Difference]: Start difference. First operand 76 states and 188 transitions. Second operand 24 states. [2020-10-16 12:32:25,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:25,529 INFO L93 Difference]: Finished difference Result 139 states and 316 transitions. [2020-10-16 12:32:25,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-16 12:32:25,529 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27 [2020-10-16 12:32:25,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:25,530 INFO L225 Difference]: With dead ends: 139 [2020-10-16 12:32:25,530 INFO L226 Difference]: Without dead ends: 133 [2020-10-16 12:32:25,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=665, Invalid=1885, Unknown=0, NotChecked=0, Total=2550 [2020-10-16 12:32:25,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-16 12:32:25,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 78. [2020-10-16 12:32:25,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-16 12:32:25,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 194 transitions. [2020-10-16 12:32:25,533 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 194 transitions. Word has length 27 [2020-10-16 12:32:25,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:25,533 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 194 transitions. [2020-10-16 12:32:25,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-16 12:32:25,534 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 194 transitions. [2020-10-16 12:32:25,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-16 12:32:25,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:25,534 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:25,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2020-10-16 12:32:25,735 INFO L429 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:25,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:25,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1602366773, now seen corresponding path program 93 times [2020-10-16 12:32:25,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:25,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71097327] [2020-10-16 12:32:25,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:26,026 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:26,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71097327] [2020-10-16 12:32:26,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030935435] [2020-10-16 12:32:26,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:26,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-10-16 12:32:26,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:32:26,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-16 12:32:26,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:26,094 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:26,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:26,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2020-10-16 12:32:26,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [437824364] [2020-10-16 12:32:26,095 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:26,097 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:26,104 INFO L258 McrAutomatonBuilder]: Finished intersection with 33 states and 37 transitions. [2020-10-16 12:32:26,104 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:26,114 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:26,114 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:26,141 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [32110#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-16 12:32:26,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-16 12:32:26,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:26,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-16 12:32:26,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:32:26,142 INFO L87 Difference]: Start difference. First operand 78 states and 194 transitions. Second operand 24 states. [2020-10-16 12:32:27,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:27,005 INFO L93 Difference]: Finished difference Result 137 states and 314 transitions. [2020-10-16 12:32:27,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-16 12:32:27,006 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27 [2020-10-16 12:32:27,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:27,007 INFO L225 Difference]: With dead ends: 137 [2020-10-16 12:32:27,007 INFO L226 Difference]: Without dead ends: 131 [2020-10-16 12:32:27,007 INFO L677 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 [2020-10-16 12:32:27,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-16 12:32:27,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 80. [2020-10-16 12:32:27,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-16 12:32:27,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 200 transitions. [2020-10-16 12:32:27,009 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 200 transitions. Word has length 27 [2020-10-16 12:32:27,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:27,009 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 200 transitions. [2020-10-16 12:32:27,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-16 12:32:27,010 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 200 transitions. [2020-10-16 12:32:27,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-16 12:32:27,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:27,010 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:27,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:27,212 INFO L429 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:27,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:27,212 INFO L82 PathProgramCache]: Analyzing trace with hash -128029289, now seen corresponding path program 94 times [2020-10-16 12:32:27,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:27,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716688778] [2020-10-16 12:32:27,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:27,505 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:27,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716688778] [2020-10-16 12:32:27,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099044472] [2020-10-16 12:32:27,506 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:27,557 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:32:27,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:32:27,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-16 12:32:27,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:27,575 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:27,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:27,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2020-10-16 12:32:27,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [321639710] [2020-10-16 12:32:27,576 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:27,584 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:27,592 INFO L258 McrAutomatonBuilder]: Finished intersection with 33 states and 37 transitions. [2020-10-16 12:32:27,592 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:27,597 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:27,598 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:27,640 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [32567#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-16 12:32:27,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-16 12:32:27,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:27,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-16 12:32:27,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:32:27,641 INFO L87 Difference]: Start difference. First operand 80 states and 200 transitions. Second operand 24 states. [2020-10-16 12:32:28,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:28,830 INFO L93 Difference]: Finished difference Result 135 states and 312 transitions. [2020-10-16 12:32:28,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-16 12:32:28,831 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27 [2020-10-16 12:32:28,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:28,832 INFO L225 Difference]: With dead ends: 135 [2020-10-16 12:32:28,832 INFO L226 Difference]: Without dead ends: 129 [2020-10-16 12:32:28,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=771, Invalid=2199, Unknown=0, NotChecked=0, Total=2970 [2020-10-16 12:32:28,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-16 12:32:28,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 82. [2020-10-16 12:32:28,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-16 12:32:28,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 206 transitions. [2020-10-16 12:32:28,836 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 206 transitions. Word has length 27 [2020-10-16 12:32:28,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:28,836 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 206 transitions. [2020-10-16 12:32:28,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-16 12:32:28,836 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 206 transitions. [2020-10-16 12:32:28,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-16 12:32:28,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:28,837 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:29,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2020-10-16 12:32:29,047 INFO L429 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:29,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:29,047 INFO L82 PathProgramCache]: Analyzing trace with hash -759996807, now seen corresponding path program 95 times [2020-10-16 12:32:29,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:29,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095737783] [2020-10-16 12:32:29,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:29,308 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:29,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095737783] [2020-10-16 12:32:29,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200675560] [2020-10-16 12:32:29,309 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:29,359 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2020-10-16 12:32:29,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:32:29,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-16 12:32:29,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:29,377 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:29,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:29,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2020-10-16 12:32:29,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [330476834] [2020-10-16 12:32:29,378 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:29,380 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:29,386 INFO L258 McrAutomatonBuilder]: Finished intersection with 33 states and 37 transitions. [2020-10-16 12:32:29,386 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:29,402 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:29,402 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:29,432 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [33030#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-16 12:32:29,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-16 12:32:29,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:29,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-16 12:32:29,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:32:29,433 INFO L87 Difference]: Start difference. First operand 82 states and 206 transitions. Second operand 24 states. [2020-10-16 12:32:30,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:30,454 INFO L93 Difference]: Finished difference Result 133 states and 310 transitions. [2020-10-16 12:32:30,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-16 12:32:30,454 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27 [2020-10-16 12:32:30,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:30,456 INFO L225 Difference]: With dead ends: 133 [2020-10-16 12:32:30,456 INFO L226 Difference]: Without dead ends: 127 [2020-10-16 12:32:30,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=848, Invalid=2344, Unknown=0, NotChecked=0, Total=3192 [2020-10-16 12:32:30,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-16 12:32:30,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 84. [2020-10-16 12:32:30,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-16 12:32:30,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 212 transitions. [2020-10-16 12:32:30,459 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 212 transitions. Word has length 27 [2020-10-16 12:32:30,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:30,459 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 212 transitions. [2020-10-16 12:32:30,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-16 12:32:30,459 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 212 transitions. [2020-10-16 12:32:30,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-16 12:32:30,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:30,459 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:30,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:30,665 INFO L429 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:30,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:30,666 INFO L82 PathProgramCache]: Analyzing trace with hash 2113085403, now seen corresponding path program 96 times [2020-10-16 12:32:30,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:30,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071568916] [2020-10-16 12:32:30,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:30,922 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:30,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071568916] [2020-10-16 12:32:30,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237969124] [2020-10-16 12:32:30,923 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:30,976 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-10-16 12:32:30,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:32:30,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-16 12:32:30,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:30,997 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:30,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:30,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2020-10-16 12:32:30,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [304728550] [2020-10-16 12:32:30,998 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:30,999 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:31,015 INFO L258 McrAutomatonBuilder]: Finished intersection with 33 states and 37 transitions. [2020-10-16 12:32:31,016 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:31,019 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:31,019 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:31,051 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [33499#(and (<= ~j~0 16) (< ~i~0 46))] [2020-10-16 12:32:31,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-16 12:32:31,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:31,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-16 12:32:31,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:32:31,052 INFO L87 Difference]: Start difference. First operand 84 states and 212 transitions. Second operand 24 states. [2020-10-16 12:32:32,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:32,179 INFO L93 Difference]: Finished difference Result 131 states and 308 transitions. [2020-10-16 12:32:32,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-16 12:32:32,179 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27 [2020-10-16 12:32:32,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:32,181 INFO L225 Difference]: With dead ends: 131 [2020-10-16 12:32:32,181 INFO L226 Difference]: Without dead ends: 125 [2020-10-16 12:32:32,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 896 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=941, Invalid=2481, Unknown=0, NotChecked=0, Total=3422 [2020-10-16 12:32:32,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-16 12:32:32,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 86. [2020-10-16 12:32:32,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-16 12:32:32,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 218 transitions. [2020-10-16 12:32:32,185 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 218 transitions. Word has length 27 [2020-10-16 12:32:32,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:32,185 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 218 transitions. [2020-10-16 12:32:32,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-16 12:32:32,185 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 218 transitions. [2020-10-16 12:32:32,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-16 12:32:32,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:32,186 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:32,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:32,390 INFO L429 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:32,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:32,390 INFO L82 PathProgramCache]: Analyzing trace with hash -6827587, now seen corresponding path program 97 times [2020-10-16 12:32:32,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:32,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541041612] [2020-10-16 12:32:32,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:32,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:32,657 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:32,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541041612] [2020-10-16 12:32:32,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634833103] [2020-10-16 12:32:32,658 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:32,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-16 12:32:32,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:32,726 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:32,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:32,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2020-10-16 12:32:32,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1616646040] [2020-10-16 12:32:32,727 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:32,729 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:32,734 INFO L258 McrAutomatonBuilder]: Finished intersection with 33 states and 37 transitions. [2020-10-16 12:32:32,735 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:32,738 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:32,738 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:32,772 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [33974#(and (<= ~j~0 18) (< ~i~0 46))] [2020-10-16 12:32:32,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-16 12:32:32,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:32,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-16 12:32:32,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:32:32,773 INFO L87 Difference]: Start difference. First operand 86 states and 218 transitions. Second operand 24 states. [2020-10-16 12:32:34,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:34,025 INFO L93 Difference]: Finished difference Result 129 states and 306 transitions. [2020-10-16 12:32:34,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-16 12:32:34,026 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27 [2020-10-16 12:32:34,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:34,027 INFO L225 Difference]: With dead ends: 129 [2020-10-16 12:32:34,027 INFO L226 Difference]: Without dead ends: 123 [2020-10-16 12:32:34,028 INFO L677 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 [2020-10-16 12:32:34,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-16 12:32:34,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 88. [2020-10-16 12:32:34,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-16 12:32:34,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 224 transitions. [2020-10-16 12:32:34,030 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 224 transitions. Word has length 27 [2020-10-16 12:32:34,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:34,030 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 224 transitions. [2020-10-16 12:32:34,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-16 12:32:34,030 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 224 transitions. [2020-10-16 12:32:34,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-16 12:32:34,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:34,031 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:34,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-10-16 12:32:34,233 INFO L429 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:34,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:34,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1255959521, now seen corresponding path program 98 times [2020-10-16 12:32:34,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:34,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264222375] [2020-10-16 12:32:34,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:34,469 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:34,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264222375] [2020-10-16 12:32:34,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161535242] [2020-10-16 12:32:34,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:34,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:32:34,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:32:34,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-16 12:32:34,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:34,541 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:34,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:34,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2020-10-16 12:32:34,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [349182151] [2020-10-16 12:32:34,542 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:34,543 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:34,549 INFO L258 McrAutomatonBuilder]: Finished intersection with 33 states and 37 transitions. [2020-10-16 12:32:34,549 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:34,552 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:34,553 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:34,585 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [34455#(and (<= ~j~0 20) (< ~i~0 46))] [2020-10-16 12:32:34,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-16 12:32:34,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:34,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-16 12:32:34,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:32:34,586 INFO L87 Difference]: Start difference. First operand 88 states and 224 transitions. Second operand 24 states. [2020-10-16 12:32:35,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:35,917 INFO L93 Difference]: Finished difference Result 129 states and 309 transitions. [2020-10-16 12:32:35,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-16 12:32:35,918 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27 [2020-10-16 12:32:35,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:35,919 INFO L225 Difference]: With dead ends: 129 [2020-10-16 12:32:35,919 INFO L226 Difference]: Without dead ends: 123 [2020-10-16 12:32:35,919 INFO L677 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 [2020-10-16 12:32:35,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-16 12:32:35,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 90. [2020-10-16 12:32:35,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-16 12:32:35,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 232 transitions. [2020-10-16 12:32:35,922 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 232 transitions. Word has length 27 [2020-10-16 12:32:35,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:35,922 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 232 transitions. [2020-10-16 12:32:35,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-16 12:32:35,923 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 232 transitions. [2020-10-16 12:32:35,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-16 12:32:35,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:35,923 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:36,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2020-10-16 12:32:36,133 INFO L429 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:36,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:36,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1239382271, now seen corresponding path program 99 times [2020-10-16 12:32:36,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:36,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856177669] [2020-10-16 12:32:36,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:36,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:36,391 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:36,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856177669] [2020-10-16 12:32:36,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567815385] [2020-10-16 12:32:36,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:36,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-10-16 12:32:36,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:32:36,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-16 12:32:36,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:36,480 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:36,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:36,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2020-10-16 12:32:36,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [807366698] [2020-10-16 12:32:36,480 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:36,482 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:36,502 INFO L258 McrAutomatonBuilder]: Finished intersection with 33 states and 37 transitions. [2020-10-16 12:32:36,502 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:36,505 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:36,506 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:36,539 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [34944#(and (<= ~j~0 22) (< ~i~0 46))] [2020-10-16 12:32:36,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-16 12:32:36,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:36,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-16 12:32:36,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:32:36,539 INFO L87 Difference]: Start difference. First operand 90 states and 232 transitions. Second operand 24 states. [2020-10-16 12:32:37,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:37,883 INFO L93 Difference]: Finished difference Result 130 states and 319 transitions. [2020-10-16 12:32:37,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-16 12:32:37,884 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27 [2020-10-16 12:32:37,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:37,885 INFO L225 Difference]: With dead ends: 130 [2020-10-16 12:32:37,886 INFO L226 Difference]: Without dead ends: 118 [2020-10-16 12:32:37,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1202 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1314, Invalid=2846, Unknown=0, NotChecked=0, Total=4160 [2020-10-16 12:32:37,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-16 12:32:37,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 70. [2020-10-16 12:32:37,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-16 12:32:37,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 171 transitions. [2020-10-16 12:32:37,889 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 171 transitions. Word has length 27 [2020-10-16 12:32:37,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:37,889 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 171 transitions. [2020-10-16 12:32:37,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-16 12:32:37,889 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 171 transitions. [2020-10-16 12:32:37,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-16 12:32:37,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:37,890 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:38,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:38,100 INFO L429 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:38,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:38,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1945349894, now seen corresponding path program 100 times [2020-10-16 12:32:38,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:38,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586238218] [2020-10-16 12:32:38,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:38,466 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:38,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586238218] [2020-10-16 12:32:38,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838025663] [2020-10-16 12:32:38,467 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:38,514 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:32:38,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:32:38,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-16 12:32:38,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:38,526 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:38,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:38,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-10-16 12:32:38,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [201332664] [2020-10-16 12:32:38,527 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:38,529 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:38,535 INFO L258 McrAutomatonBuilder]: Finished intersection with 37 states and 44 transitions. [2020-10-16 12:32:38,535 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:38,537 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:38,538 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:38,583 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [35402#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-16 12:32:38,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-16 12:32:38,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:38,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-16 12:32:38,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:32:38,585 INFO L87 Difference]: Start difference. First operand 70 states and 171 transitions. Second operand 25 states. [2020-10-16 12:32:39,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:39,314 INFO L93 Difference]: Finished difference Result 126 states and 288 transitions. [2020-10-16 12:32:39,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-16 12:32:39,315 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28 [2020-10-16 12:32:39,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:39,316 INFO L225 Difference]: With dead ends: 126 [2020-10-16 12:32:39,316 INFO L226 Difference]: Without dead ends: 120 [2020-10-16 12:32:39,317 INFO L677 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 [2020-10-16 12:32:39,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-16 12:32:39,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 77. [2020-10-16 12:32:39,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-16 12:32:39,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 190 transitions. [2020-10-16 12:32:39,322 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 190 transitions. Word has length 28 [2020-10-16 12:32:39,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:39,322 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 190 transitions. [2020-10-16 12:32:39,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-16 12:32:39,323 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 190 transitions. [2020-10-16 12:32:39,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-16 12:32:39,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:39,323 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:39,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-10-16 12:32:39,534 INFO L429 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:39,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:39,535 INFO L82 PathProgramCache]: Analyzing trace with hash -556056612, now seen corresponding path program 101 times [2020-10-16 12:32:39,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:39,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759732825] [2020-10-16 12:32:39,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:39,884 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:39,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759732825] [2020-10-16 12:32:39,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183918063] [2020-10-16 12:32:39,884 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:39,936 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2020-10-16 12:32:39,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:32:39,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-16 12:32:39,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:39,963 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:39,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:39,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-10-16 12:32:39,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1273228804] [2020-10-16 12:32:39,964 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:39,967 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:39,974 INFO L258 McrAutomatonBuilder]: Finished intersection with 36 states and 42 transitions. [2020-10-16 12:32:39,974 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:39,989 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:39,991 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:40,017 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [35834#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-16 12:32:40,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-16 12:32:40,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:40,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-16 12:32:40,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:32:40,019 INFO L87 Difference]: Start difference. First operand 77 states and 190 transitions. Second operand 25 states. [2020-10-16 12:32:40,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:40,802 INFO L93 Difference]: Finished difference Result 123 states and 284 transitions. [2020-10-16 12:32:40,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:32:40,806 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28 [2020-10-16 12:32:40,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:40,807 INFO L225 Difference]: With dead ends: 123 [2020-10-16 12:32:40,807 INFO L226 Difference]: Without dead ends: 117 [2020-10-16 12:32:40,808 INFO L677 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 [2020-10-16 12:32:40,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-16 12:32:40,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 79. [2020-10-16 12:32:40,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-16 12:32:40,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 196 transitions. [2020-10-16 12:32:40,809 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 196 transitions. Word has length 28 [2020-10-16 12:32:40,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:40,810 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 196 transitions. [2020-10-16 12:32:40,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-16 12:32:40,810 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 196 transitions. [2020-10-16 12:32:40,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-16 12:32:40,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:40,810 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:41,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-10-16 12:32:41,011 INFO L429 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:41,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:41,012 INFO L82 PathProgramCache]: Analyzing trace with hash 888962878, now seen corresponding path program 102 times [2020-10-16 12:32:41,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:41,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903975316] [2020-10-16 12:32:41,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:41,344 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:41,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903975316] [2020-10-16 12:32:41,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953085547] [2020-10-16 12:32:41,344 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:41,399 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-10-16 12:32:41,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:32:41,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-16 12:32:41,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:41,416 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:41,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:41,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-10-16 12:32:41,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1701360111] [2020-10-16 12:32:41,417 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:41,419 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:41,425 INFO L258 McrAutomatonBuilder]: Finished intersection with 36 states and 42 transitions. [2020-10-16 12:32:41,425 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:41,447 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:41,447 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:41,478 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [36271#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-16 12:32:41,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-16 12:32:41,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:41,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-16 12:32:41,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:32:41,479 INFO L87 Difference]: Start difference. First operand 79 states and 196 transitions. Second operand 25 states. [2020-10-16 12:32:42,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:42,365 INFO L93 Difference]: Finished difference Result 121 states and 282 transitions. [2020-10-16 12:32:42,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-16 12:32:42,366 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28 [2020-10-16 12:32:42,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:42,366 INFO L225 Difference]: With dead ends: 121 [2020-10-16 12:32:42,366 INFO L226 Difference]: Without dead ends: 115 [2020-10-16 12:32:42,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=676, Invalid=1976, Unknown=0, NotChecked=0, Total=2652 [2020-10-16 12:32:42,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-16 12:32:42,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 81. [2020-10-16 12:32:42,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-16 12:32:42,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 202 transitions. [2020-10-16 12:32:42,369 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 202 transitions. Word has length 28 [2020-10-16 12:32:42,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:42,369 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 202 transitions. [2020-10-16 12:32:42,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-16 12:32:42,369 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 202 transitions. [2020-10-16 12:32:42,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-16 12:32:42,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:42,370 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:42,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-10-16 12:32:42,575 INFO L429 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:42,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:42,576 INFO L82 PathProgramCache]: Analyzing trace with hash 130690848, now seen corresponding path program 103 times [2020-10-16 12:32:42,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:42,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418168498] [2020-10-16 12:32:42,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:42,897 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:42,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418168498] [2020-10-16 12:32:42,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409503388] [2020-10-16 12:32:42,898 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:42,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-16 12:32:42,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:42,966 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:42,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:42,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-10-16 12:32:42,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [856202691] [2020-10-16 12:32:42,967 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:42,969 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:42,975 INFO L258 McrAutomatonBuilder]: Finished intersection with 36 states and 42 transitions. [2020-10-16 12:32:42,975 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:42,984 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:42,984 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:43,014 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [36714#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-16 12:32:43,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-16 12:32:43,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:43,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-16 12:32:43,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:32:43,015 INFO L87 Difference]: Start difference. First operand 81 states and 202 transitions. Second operand 25 states. [2020-10-16 12:32:43,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:43,999 INFO L93 Difference]: Finished difference Result 119 states and 280 transitions. [2020-10-16 12:32:43,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-16 12:32:43,999 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28 [2020-10-16 12:32:43,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:44,000 INFO L225 Difference]: With dead ends: 119 [2020-10-16 12:32:44,000 INFO L226 Difference]: Without dead ends: 113 [2020-10-16 12:32:44,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=722, Invalid=2140, Unknown=0, NotChecked=0, Total=2862 [2020-10-16 12:32:44,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-16 12:32:44,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 83. [2020-10-16 12:32:44,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-16 12:32:44,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 208 transitions. [2020-10-16 12:32:44,003 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 208 transitions. Word has length 28 [2020-10-16 12:32:44,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:44,003 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 208 transitions. [2020-10-16 12:32:44,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-16 12:32:44,004 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 208 transitions. [2020-10-16 12:32:44,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-16 12:32:44,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:44,004 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:44,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:44,213 INFO L429 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:44,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:44,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1599705214, now seen corresponding path program 104 times [2020-10-16 12:32:44,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:44,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156608973] [2020-10-16 12:32:44,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:44,521 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:44,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156608973] [2020-10-16 12:32:44,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852149581] [2020-10-16 12:32:44,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:44,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:32:44,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:32:44,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-16 12:32:44,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:44,587 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:44,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:44,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-10-16 12:32:44,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [262350017] [2020-10-16 12:32:44,588 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:44,590 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:44,596 INFO L258 McrAutomatonBuilder]: Finished intersection with 36 states and 42 transitions. [2020-10-16 12:32:44,596 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:44,597 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:44,597 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:44,645 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [37163#(and (<= ~j~0 16) (< ~i~0 46))] [2020-10-16 12:32:44,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-16 12:32:44,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:44,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-16 12:32:44,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:32:44,646 INFO L87 Difference]: Start difference. First operand 83 states and 208 transitions. Second operand 25 states. [2020-10-16 12:32:45,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:45,721 INFO L93 Difference]: Finished difference Result 117 states and 278 transitions. [2020-10-16 12:32:45,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-16 12:32:45,722 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28 [2020-10-16 12:32:45,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:45,723 INFO L225 Difference]: With dead ends: 117 [2020-10-16 12:32:45,723 INFO L226 Difference]: Without dead ends: 111 [2020-10-16 12:32:45,724 INFO L677 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 [2020-10-16 12:32:45,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-16 12:32:45,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 85. [2020-10-16 12:32:45,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-16 12:32:45,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 214 transitions. [2020-10-16 12:32:45,727 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 214 transitions. Word has length 28 [2020-10-16 12:32:45,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:45,727 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 214 transitions. [2020-10-16 12:32:45,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-16 12:32:45,727 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 214 transitions. [2020-10-16 12:32:45,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-16 12:32:45,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:45,728 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:45,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-10-16 12:32:45,931 INFO L429 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:45,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:45,931 INFO L82 PathProgramCache]: Analyzing trace with hash 2063294564, now seen corresponding path program 105 times [2020-10-16 12:32:45,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:45,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356313919] [2020-10-16 12:32:45,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:45,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:46,218 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:46,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356313919] [2020-10-16 12:32:46,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804841382] [2020-10-16 12:32:46,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:46,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-10-16 12:32:46,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:32:46,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-16 12:32:46,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:46,310 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:46,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:46,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-10-16 12:32:46,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2108602577] [2020-10-16 12:32:46,311 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:46,313 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:46,318 INFO L258 McrAutomatonBuilder]: Finished intersection with 36 states and 42 transitions. [2020-10-16 12:32:46,318 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:46,319 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:46,319 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:46,362 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [37618#(and (<= ~j~0 18) (< ~i~0 46))] [2020-10-16 12:32:46,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-16 12:32:46,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:46,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-16 12:32:46,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:32:46,363 INFO L87 Difference]: Start difference. First operand 85 states and 214 transitions. Second operand 25 states. [2020-10-16 12:32:47,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:47,482 INFO L93 Difference]: Finished difference Result 115 states and 276 transitions. [2020-10-16 12:32:47,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-16 12:32:47,483 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28 [2020-10-16 12:32:47,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:47,484 INFO L225 Difference]: With dead ends: 115 [2020-10-16 12:32:47,484 INFO L226 Difference]: Without dead ends: 109 [2020-10-16 12:32:47,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=862, Invalid=2444, Unknown=0, NotChecked=0, Total=3306 [2020-10-16 12:32:47,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-16 12:32:47,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 87. [2020-10-16 12:32:47,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-16 12:32:47,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 220 transitions. [2020-10-16 12:32:47,487 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 220 transitions. Word has length 28 [2020-10-16 12:32:47,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:47,487 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 220 transitions. [2020-10-16 12:32:47,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-16 12:32:47,487 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 220 transitions. [2020-10-16 12:32:47,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-16 12:32:47,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:47,488 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:47,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2020-10-16 12:32:47,688 INFO L429 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:47,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:47,689 INFO L82 PathProgramCache]: Analyzing trace with hash 641409478, now seen corresponding path program 106 times [2020-10-16 12:32:47,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:47,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770616492] [2020-10-16 12:32:47,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:47,988 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:47,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770616492] [2020-10-16 12:32:47,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776877154] [2020-10-16 12:32:47,989 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:48,035 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:32:48,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:32:48,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-16 12:32:48,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:48,058 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:48,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:48,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-10-16 12:32:48,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [279546385] [2020-10-16 12:32:48,059 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:48,060 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:48,066 INFO L258 McrAutomatonBuilder]: Finished intersection with 36 states and 42 transitions. [2020-10-16 12:32:48,066 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:48,076 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:48,077 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:48,105 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [38079#(and (<= ~j~0 20) (< ~i~0 46))] [2020-10-16 12:32:48,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-16 12:32:48,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:48,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-16 12:32:48,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:32:48,106 INFO L87 Difference]: Start difference. First operand 87 states and 220 transitions. Second operand 25 states. [2020-10-16 12:32:49,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:49,320 INFO L93 Difference]: Finished difference Result 113 states and 274 transitions. [2020-10-16 12:32:49,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-16 12:32:49,321 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28 [2020-10-16 12:32:49,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:49,321 INFO L225 Difference]: With dead ends: 113 [2020-10-16 12:32:49,321 INFO L226 Difference]: Without dead ends: 107 [2020-10-16 12:32:49,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=956, Invalid=2584, Unknown=0, NotChecked=0, Total=3540 [2020-10-16 12:32:49,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-16 12:32:49,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 89. [2020-10-16 12:32:49,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-16 12:32:49,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 226 transitions. [2020-10-16 12:32:49,324 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 226 transitions. Word has length 28 [2020-10-16 12:32:49,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:49,324 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 226 transitions. [2020-10-16 12:32:49,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-16 12:32:49,325 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 226 transitions. [2020-10-16 12:32:49,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-16 12:32:49,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:49,325 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:49,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2020-10-16 12:32:49,526 INFO L429 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:49,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:49,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1478503512, now seen corresponding path program 107 times [2020-10-16 12:32:49,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:49,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012314362] [2020-10-16 12:32:49,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:49,808 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:49,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012314362] [2020-10-16 12:32:49,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688720931] [2020-10-16 12:32:49,809 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:49,860 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2020-10-16 12:32:49,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:32:49,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-16 12:32:49,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:49,883 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:49,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:49,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-10-16 12:32:49,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1967757956] [2020-10-16 12:32:49,884 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:49,886 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:49,892 INFO L258 McrAutomatonBuilder]: Finished intersection with 36 states and 42 transitions. [2020-10-16 12:32:49,892 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:49,893 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:49,893 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:49,931 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [38546#(and (<= ~j~0 22) (< ~i~0 46))] [2020-10-16 12:32:49,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-16 12:32:49,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:49,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-16 12:32:49,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:32:49,931 INFO L87 Difference]: Start difference. First operand 89 states and 226 transitions. Second operand 25 states. [2020-10-16 12:32:51,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:51,256 INFO L93 Difference]: Finished difference Result 111 states and 272 transitions. [2020-10-16 12:32:51,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-16 12:32:51,257 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28 [2020-10-16 12:32:51,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:51,257 INFO L225 Difference]: With dead ends: 111 [2020-10-16 12:32:51,257 INFO L226 Difference]: Without dead ends: 105 [2020-10-16 12:32:51,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1066, Invalid=2716, Unknown=0, NotChecked=0, Total=3782 [2020-10-16 12:32:51,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-16 12:32:51,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 91. [2020-10-16 12:32:51,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-16 12:32:51,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 232 transitions. [2020-10-16 12:32:51,260 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 232 transitions. Word has length 28 [2020-10-16 12:32:51,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:51,261 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 232 transitions. [2020-10-16 12:32:51,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-16 12:32:51,261 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 232 transitions. [2020-10-16 12:32:51,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-16 12:32:51,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:51,261 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:51,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:51,468 INFO L429 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:51,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:51,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1567331850, now seen corresponding path program 108 times [2020-10-16 12:32:51,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:51,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834990869] [2020-10-16 12:32:51,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:51,737 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:51,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834990869] [2020-10-16 12:32:51,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270905381] [2020-10-16 12:32:51,737 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:51,792 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-10-16 12:32:51,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:32:51,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-16 12:32:51,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:51,823 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:51,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:51,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-10-16 12:32:51,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [987813567] [2020-10-16 12:32:51,824 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:51,826 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:51,834 INFO L258 McrAutomatonBuilder]: Finished intersection with 36 states and 42 transitions. [2020-10-16 12:32:51,834 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:51,845 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:51,846 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:51,880 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [39019#(and (<= ~j~0 24) (< ~i~0 46))] [2020-10-16 12:32:51,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-16 12:32:51,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:51,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-16 12:32:51,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:32:51,882 INFO L87 Difference]: Start difference. First operand 91 states and 232 transitions. Second operand 25 states. [2020-10-16 12:32:53,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:53,275 INFO L93 Difference]: Finished difference Result 111 states and 275 transitions. [2020-10-16 12:32:53,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-16 12:32:53,276 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28 [2020-10-16 12:32:53,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:53,276 INFO L225 Difference]: With dead ends: 111 [2020-10-16 12:32:53,276 INFO L226 Difference]: Without dead ends: 105 [2020-10-16 12:32:53,276 INFO L677 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 [2020-10-16 12:32:53,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-16 12:32:53,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 93. [2020-10-16 12:32:53,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-16 12:32:53,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 240 transitions. [2020-10-16 12:32:53,279 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 240 transitions. Word has length 28 [2020-10-16 12:32:53,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:53,279 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 240 transitions. [2020-10-16 12:32:53,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-16 12:32:53,279 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 240 transitions. [2020-10-16 12:32:53,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-16 12:32:53,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:53,280 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:53,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,108 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:53,480 INFO L429 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:53,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:53,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1583909100, now seen corresponding path program 109 times [2020-10-16 12:32:53,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:53,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277559814] [2020-10-16 12:32:53,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:53,762 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:53,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277559814] [2020-10-16 12:32:53,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223252796] [2020-10-16 12:32:53,763 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:53,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-16 12:32:53,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:53,849 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:53,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:53,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-10-16 12:32:53,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1998167216] [2020-10-16 12:32:53,849 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:53,852 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:53,858 INFO L258 McrAutomatonBuilder]: Finished intersection with 36 states and 42 transitions. [2020-10-16 12:32:53,858 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:53,859 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:53,859 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:53,902 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [39500#(and (<= ~j~0 26) (< ~i~0 46))] [2020-10-16 12:32:53,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-16 12:32:53,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:53,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-16 12:32:53,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:32:53,903 INFO L87 Difference]: Start difference. First operand 93 states and 240 transitions. Second operand 25 states. [2020-10-16 12:32:55,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:55,346 INFO L93 Difference]: Finished difference Result 111 states and 283 transitions. [2020-10-16 12:32:55,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-16 12:32:55,347 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28 [2020-10-16 12:32:55,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:55,348 INFO L225 Difference]: With dead ends: 111 [2020-10-16 12:32:55,348 INFO L226 Difference]: Without dead ends: 99 [2020-10-16 12:32:55,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1146 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1332, Invalid=2958, Unknown=0, NotChecked=0, Total=4290 [2020-10-16 12:32:55,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-16 12:32:55,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 70. [2020-10-16 12:32:55,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-16 12:32:55,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 172 transitions. [2020-10-16 12:32:55,351 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 172 transitions. Word has length 28 [2020-10-16 12:32:55,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:55,351 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 172 transitions. [2020-10-16 12:32:55,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-16 12:32:55,351 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 172 transitions. [2020-10-16 12:32:55,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-16 12:32:55,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:55,352 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:55,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:55,552 INFO L429 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:55,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:55,553 INFO L82 PathProgramCache]: Analyzing trace with hash 65865102, now seen corresponding path program 110 times [2020-10-16 12:32:55,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:55,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995308333] [2020-10-16 12:32:55,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:55,941 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:55,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995308333] [2020-10-16 12:32:55,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214883301] [2020-10-16 12:32:55,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:55,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:32:55,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:32:55,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-16 12:32:55,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:56,000 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:56,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:56,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-10-16 12:32:56,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [377785873] [2020-10-16 12:32:56,000 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:56,002 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:56,029 INFO L258 McrAutomatonBuilder]: Finished intersection with 39 states and 49 transitions. [2020-10-16 12:32:56,029 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:56,030 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:56,030 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:56,063 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:56,063 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:56,090 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:56,090 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:56,100 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:56,100 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:56,106 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [39943#(and (<= ~j~0 4) (< ~i~0 46))] [2020-10-16 12:32:56,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-16 12:32:56,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:56,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-16 12:32:56,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:32:56,108 INFO L87 Difference]: Start difference. First operand 70 states and 172 transitions. Second operand 26 states. [2020-10-16 12:32:56,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:56,876 INFO L93 Difference]: Finished difference Result 108 states and 252 transitions. [2020-10-16 12:32:56,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:32:56,876 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 29 [2020-10-16 12:32:56,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:56,877 INFO L225 Difference]: With dead ends: 108 [2020-10-16 12:32:56,877 INFO L226 Difference]: Without dead ends: 102 [2020-10-16 12:32:56,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=688, Invalid=1664, Unknown=0, NotChecked=0, Total=2352 [2020-10-16 12:32:56,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-16 12:32:56,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 78. [2020-10-16 12:32:56,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-16 12:32:56,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 192 transitions. [2020-10-16 12:32:56,880 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 192 transitions. Word has length 29 [2020-10-16 12:32:56,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:56,880 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 192 transitions. [2020-10-16 12:32:56,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-16 12:32:56,880 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 192 transitions. [2020-10-16 12:32:56,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-16 12:32:56,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:56,881 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:57,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2020-10-16 12:32:57,081 INFO L429 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:57,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:57,082 INFO L82 PathProgramCache]: Analyzing trace with hash -558119952, now seen corresponding path program 111 times [2020-10-16 12:32:57,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:57,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107410077] [2020-10-16 12:32:57,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:57,478 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:57,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107410077] [2020-10-16 12:32:57,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107072796] [2020-10-16 12:32:57,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:57,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-10-16 12:32:57,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:32:57,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-16 12:32:57,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:57,553 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:57,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:57,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-10-16 12:32:57,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2101870583] [2020-10-16 12:32:57,553 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:57,555 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:57,562 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 39 transitions. [2020-10-16 12:32:57,562 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:57,569 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:57,569 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:57,604 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [40363#(and (<= ~j~0 6) (< ~i~0 46))] [2020-10-16 12:32:57,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-16 12:32:57,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:57,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-16 12:32:57,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:32:57,606 INFO L87 Difference]: Start difference. First operand 78 states and 192 transitions. Second operand 26 states. [2020-10-16 12:32:58,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:32:58,489 INFO L93 Difference]: Finished difference Result 152 states and 342 transitions. [2020-10-16 12:32:58,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-16 12:32:58,490 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 29 [2020-10-16 12:32:58,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:32:58,491 INFO L225 Difference]: With dead ends: 152 [2020-10-16 12:32:58,491 INFO L226 Difference]: Without dead ends: 146 [2020-10-16 12:32:58,492 INFO L677 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 [2020-10-16 12:32:58,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-16 12:32:58,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 80. [2020-10-16 12:32:58,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-16 12:32:58,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 198 transitions. [2020-10-16 12:32:58,494 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 198 transitions. Word has length 29 [2020-10-16 12:32:58,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:32:58,495 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 198 transitions. [2020-10-16 12:32:58,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-16 12:32:58,495 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 198 transitions. [2020-10-16 12:32:58,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-16 12:32:58,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:32:58,495 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:32:58,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2020-10-16 12:32:58,696 INFO L429 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:32:58,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:32:58,697 INFO L82 PathProgramCache]: Analyzing trace with hash 831173330, now seen corresponding path program 112 times [2020-10-16 12:32:58,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:32:58,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769539765] [2020-10-16 12:32:58,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:32:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:32:59,076 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:59,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769539765] [2020-10-16 12:32:59,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074348005] [2020-10-16 12:32:59,077 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:32:59,145 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:32:59,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:32:59,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-16 12:32:59,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:32:59,163 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:32:59,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:32:59,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-10-16 12:32:59,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1085995225] [2020-10-16 12:32:59,164 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:32:59,167 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:32:59,175 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 39 transitions. [2020-10-16 12:32:59,175 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:32:59,179 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:32:59,179 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:32:59,219 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [40839#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-16 12:32:59,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-16 12:32:59,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:32:59,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-16 12:32:59,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:32:59,220 INFO L87 Difference]: Start difference. First operand 80 states and 198 transitions. Second operand 26 states. [2020-10-16 12:33:00,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:00,241 INFO L93 Difference]: Finished difference Result 149 states and 338 transitions. [2020-10-16 12:33:00,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-16 12:33:00,242 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 29 [2020-10-16 12:33:00,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:00,243 INFO L225 Difference]: With dead ends: 149 [2020-10-16 12:33:00,243 INFO L226 Difference]: Without dead ends: 143 [2020-10-16 12:33:00,243 INFO L677 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 [2020-10-16 12:33:00,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-16 12:33:00,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 82. [2020-10-16 12:33:00,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-16 12:33:00,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 204 transitions. [2020-10-16 12:33:00,245 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 204 transitions. Word has length 29 [2020-10-16 12:33:00,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:00,245 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 204 transitions. [2020-10-16 12:33:00,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-16 12:33:00,245 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 204 transitions. [2020-10-16 12:33:00,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-16 12:33:00,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:00,247 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:33:00,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2020-10-16 12:33:00,455 INFO L429 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:00,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:00,455 INFO L82 PathProgramCache]: Analyzing trace with hash -2018774476, now seen corresponding path program 113 times [2020-10-16 12:33:00,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:00,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081059906] [2020-10-16 12:33:00,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:00,819 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:00,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081059906] [2020-10-16 12:33:00,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928505551] [2020-10-16 12:33:00,819 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:00,872 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-10-16 12:33:00,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:33:00,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-16 12:33:00,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:00,891 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:00,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:00,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-10-16 12:33:00,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [314134819] [2020-10-16 12:33:00,892 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:00,893 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:00,902 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 39 transitions. [2020-10-16 12:33:00,902 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:00,915 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:00,916 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:00,951 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [41320#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-16 12:33:00,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-16 12:33:00,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:00,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-16 12:33:00,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:33:00,952 INFO L87 Difference]: Start difference. First operand 82 states and 204 transitions. Second operand 26 states. [2020-10-16 12:33:02,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:02,008 INFO L93 Difference]: Finished difference Result 147 states and 336 transitions. [2020-10-16 12:33:02,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-16 12:33:02,009 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 29 [2020-10-16 12:33:02,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:02,009 INFO L225 Difference]: With dead ends: 147 [2020-10-16 12:33:02,009 INFO L226 Difference]: Without dead ends: 141 [2020-10-16 12:33:02,010 INFO L677 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 [2020-10-16 12:33:02,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-16 12:33:02,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 84. [2020-10-16 12:33:02,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-16 12:33:02,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 210 transitions. [2020-10-16 12:33:02,013 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 210 transitions. Word has length 29 [2020-10-16 12:33:02,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:02,014 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 210 transitions. [2020-10-16 12:33:02,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-16 12:33:02,014 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 210 transitions. [2020-10-16 12:33:02,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-16 12:33:02,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:02,014 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:33:02,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2020-10-16 12:33:02,222 INFO L429 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:02,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:02,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1517920790, now seen corresponding path program 114 times [2020-10-16 12:33:02,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:02,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235487167] [2020-10-16 12:33:02,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:02,580 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:02,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235487167] [2020-10-16 12:33:02,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52590111] [2020-10-16 12:33:02,581 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:02,635 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-10-16 12:33:02,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:33:02,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-16 12:33:02,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:02,655 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:02,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:02,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-10-16 12:33:02,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [795651173] [2020-10-16 12:33:02,656 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:02,657 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:02,664 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 39 transitions. [2020-10-16 12:33:02,664 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:02,670 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:02,670 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:02,705 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [41807#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-16 12:33:02,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-16 12:33:02,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:02,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-16 12:33:02,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:33:02,706 INFO L87 Difference]: Start difference. First operand 84 states and 210 transitions. Second operand 26 states. [2020-10-16 12:33:03,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:03,845 INFO L93 Difference]: Finished difference Result 145 states and 334 transitions. [2020-10-16 12:33:03,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-16 12:33:03,846 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 29 [2020-10-16 12:33:03,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:03,846 INFO L225 Difference]: With dead ends: 145 [2020-10-16 12:33:03,846 INFO L226 Difference]: Without dead ends: 139 [2020-10-16 12:33:03,847 INFO L677 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 [2020-10-16 12:33:03,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-16 12:33:03,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2020-10-16 12:33:03,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-16 12:33:03,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 216 transitions. [2020-10-16 12:33:03,849 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 216 transitions. Word has length 29 [2020-10-16 12:33:03,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:03,849 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 216 transitions. [2020-10-16 12:33:03,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-16 12:33:03,850 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 216 transitions. [2020-10-16 12:33:03,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-16 12:33:03,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:03,850 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:33:04,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2020-10-16 12:33:04,051 INFO L429 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:04,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:04,052 INFO L82 PathProgramCache]: Analyzing trace with hash -212475272, now seen corresponding path program 115 times [2020-10-16 12:33:04,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:04,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837594640] [2020-10-16 12:33:04,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:04,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:04,386 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:04,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837594640] [2020-10-16 12:33:04,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074254458] [2020-10-16 12:33:04,387 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:04,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-16 12:33:04,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:04,458 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:04,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:04,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-10-16 12:33:04,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1227845501] [2020-10-16 12:33:04,459 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:04,461 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:04,467 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 39 transitions. [2020-10-16 12:33:04,467 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:04,473 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:04,473 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:04,507 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [42300#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-16 12:33:04,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-16 12:33:04,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:04,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-16 12:33:04,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:33:04,508 INFO L87 Difference]: Start difference. First operand 86 states and 216 transitions. Second operand 26 states. [2020-10-16 12:33:05,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:05,754 INFO L93 Difference]: Finished difference Result 143 states and 332 transitions. [2020-10-16 12:33:05,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-16 12:33:05,755 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 29 [2020-10-16 12:33:05,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:05,756 INFO L225 Difference]: With dead ends: 143 [2020-10-16 12:33:05,756 INFO L226 Difference]: Without dead ends: 137 [2020-10-16 12:33:05,757 INFO L677 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 [2020-10-16 12:33:05,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-16 12:33:05,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 88. [2020-10-16 12:33:05,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-16 12:33:05,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 222 transitions. [2020-10-16 12:33:05,761 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 222 transitions. Word has length 29 [2020-10-16 12:33:05,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:05,762 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 222 transitions. [2020-10-16 12:33:05,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-16 12:33:05,762 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 222 transitions. [2020-10-16 12:33:05,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-16 12:33:05,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:05,764 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:33:05,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:05,972 INFO L429 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:05,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:05,972 INFO L82 PathProgramCache]: Analyzing trace with hash -844442790, now seen corresponding path program 116 times [2020-10-16 12:33:05,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:05,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486057790] [2020-10-16 12:33:05,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:06,294 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:06,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486057790] [2020-10-16 12:33:06,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610448894] [2020-10-16 12:33:06,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:06,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:33:06,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:33:06,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-16 12:33:06,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:06,366 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:06,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:06,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-10-16 12:33:06,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2099987916] [2020-10-16 12:33:06,367 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:06,368 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:06,375 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 39 transitions. [2020-10-16 12:33:06,375 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:06,378 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:06,379 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:06,415 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [42799#(and (<= ~j~0 16) (< ~i~0 46))] [2020-10-16 12:33:06,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-16 12:33:06,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:06,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-16 12:33:06,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:33:06,417 INFO L87 Difference]: Start difference. First operand 88 states and 222 transitions. Second operand 26 states. [2020-10-16 12:33:07,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:07,708 INFO L93 Difference]: Finished difference Result 141 states and 330 transitions. [2020-10-16 12:33:07,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-16 12:33:07,709 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 29 [2020-10-16 12:33:07,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:07,710 INFO L225 Difference]: With dead ends: 141 [2020-10-16 12:33:07,710 INFO L226 Difference]: Without dead ends: 135 [2020-10-16 12:33:07,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1044, Invalid=2862, Unknown=0, NotChecked=0, Total=3906 [2020-10-16 12:33:07,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-16 12:33:07,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 90. [2020-10-16 12:33:07,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-16 12:33:07,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 228 transitions. [2020-10-16 12:33:07,713 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 228 transitions. Word has length 29 [2020-10-16 12:33:07,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:07,713 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 228 transitions. [2020-10-16 12:33:07,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-16 12:33:07,713 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 228 transitions. [2020-10-16 12:33:07,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-16 12:33:07,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:07,714 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:33:07,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2020-10-16 12:33:07,922 INFO L429 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:07,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:07,922 INFO L82 PathProgramCache]: Analyzing trace with hash 2028639420, now seen corresponding path program 117 times [2020-10-16 12:33:07,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:07,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359257798] [2020-10-16 12:33:07,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:08,258 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:08,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359257798] [2020-10-16 12:33:08,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807468748] [2020-10-16 12:33:08,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:08,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-10-16 12:33:08,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:33:08,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-16 12:33:08,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:08,336 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:08,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:08,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-10-16 12:33:08,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1797621134] [2020-10-16 12:33:08,337 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:08,338 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:08,344 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 39 transitions. [2020-10-16 12:33:08,344 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:08,346 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:08,346 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:08,384 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [43304#(and (<= ~j~0 18) (< ~i~0 46))] [2020-10-16 12:33:08,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-16 12:33:08,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:08,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-16 12:33:08,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:33:08,385 INFO L87 Difference]: Start difference. First operand 90 states and 228 transitions. Second operand 26 states. [2020-10-16 12:33:09,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:09,751 INFO L93 Difference]: Finished difference Result 139 states and 328 transitions. [2020-10-16 12:33:09,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-16 12:33:09,752 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 29 [2020-10-16 12:33:09,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:09,753 INFO L225 Difference]: With dead ends: 139 [2020-10-16 12:33:09,753 INFO L226 Difference]: Without dead ends: 133 [2020-10-16 12:33:09,753 INFO L677 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 [2020-10-16 12:33:09,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-16 12:33:09,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 92. [2020-10-16 12:33:09,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-16 12:33:09,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 234 transitions. [2020-10-16 12:33:09,756 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 234 transitions. Word has length 29 [2020-10-16 12:33:09,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:09,756 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 234 transitions. [2020-10-16 12:33:09,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-16 12:33:09,756 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 234 transitions. [2020-10-16 12:33:09,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-16 12:33:09,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:09,756 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:33:09,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:09,957 INFO L429 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:09,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:09,958 INFO L82 PathProgramCache]: Analyzing trace with hash -91273570, now seen corresponding path program 118 times [2020-10-16 12:33:09,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:09,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811070149] [2020-10-16 12:33:09,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:09,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:10,263 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:10,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811070149] [2020-10-16 12:33:10,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612557755] [2020-10-16 12:33:10,264 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:10,311 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:33:10,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:33:10,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-16 12:33:10,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:10,334 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:10,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:10,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-10-16 12:33:10,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1797108589] [2020-10-16 12:33:10,335 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:10,336 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:10,348 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 39 transitions. [2020-10-16 12:33:10,348 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:10,353 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:10,353 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:10,391 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [43815#(and (<= ~j~0 20) (< ~i~0 46))] [2020-10-16 12:33:10,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-16 12:33:10,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:10,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-16 12:33:10,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:33:10,392 INFO L87 Difference]: Start difference. First operand 92 states and 234 transitions. Second operand 26 states. [2020-10-16 12:33:11,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:11,895 INFO L93 Difference]: Finished difference Result 137 states and 326 transitions. [2020-10-16 12:33:11,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-16 12:33:11,896 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 29 [2020-10-16 12:33:11,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:11,897 INFO L225 Difference]: With dead ends: 137 [2020-10-16 12:33:11,897 INFO L226 Difference]: Without dead ends: 131 [2020-10-16 12:33:11,897 INFO L677 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 [2020-10-16 12:33:11,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-16 12:33:11,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 94. [2020-10-16 12:33:11,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-16 12:33:11,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 240 transitions. [2020-10-16 12:33:11,900 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 240 transitions. Word has length 29 [2020-10-16 12:33:11,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:11,900 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 240 transitions. [2020-10-16 12:33:11,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-16 12:33:11,900 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 240 transitions. [2020-10-16 12:33:11,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-16 12:33:11,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:11,900 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:33:12,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,118 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:12,101 INFO L429 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:12,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:12,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1340405504, now seen corresponding path program 119 times [2020-10-16 12:33:12,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:12,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993731625] [2020-10-16 12:33:12,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:12,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:12,412 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:12,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993731625] [2020-10-16 12:33:12,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123166216] [2020-10-16 12:33:12,413 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:12,468 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-10-16 12:33:12,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:33:12,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-16 12:33:12,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:12,496 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:12,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:12,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-10-16 12:33:12,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [971348982] [2020-10-16 12:33:12,497 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:12,499 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:12,505 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 39 transitions. [2020-10-16 12:33:12,506 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:12,515 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:12,515 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:12,545 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [44332#(and (<= ~j~0 22) (< ~i~0 46))] [2020-10-16 12:33:12,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-16 12:33:12,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:12,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-16 12:33:12,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:33:12,546 INFO L87 Difference]: Start difference. First operand 94 states and 240 transitions. Second operand 26 states. [2020-10-16 12:33:14,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:14,116 INFO L93 Difference]: Finished difference Result 137 states and 329 transitions. [2020-10-16 12:33:14,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-16 12:33:14,117 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 29 [2020-10-16 12:33:14,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:14,118 INFO L225 Difference]: With dead ends: 137 [2020-10-16 12:33:14,118 INFO L226 Difference]: Without dead ends: 131 [2020-10-16 12:33:14,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1333 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1413, Invalid=3279, Unknown=0, NotChecked=0, Total=4692 [2020-10-16 12:33:14,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-16 12:33:14,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 96. [2020-10-16 12:33:14,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-16 12:33:14,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 248 transitions. [2020-10-16 12:33:14,122 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 248 transitions. Word has length 29 [2020-10-16 12:33:14,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:14,122 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 248 transitions. [2020-10-16 12:33:14,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-16 12:33:14,122 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 248 transitions. [2020-10-16 12:33:14,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-16 12:33:14,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:14,122 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:33:14,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable120 [2020-10-16 12:33:14,323 INFO L429 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:14,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:14,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1323828254, now seen corresponding path program 120 times [2020-10-16 12:33:14,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:14,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834354504] [2020-10-16 12:33:14,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:14,645 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:14,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834354504] [2020-10-16 12:33:14,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547178404] [2020-10-16 12:33:14,646 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:14,702 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-10-16 12:33:14,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:33:14,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-16 12:33:14,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:14,732 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:14,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:14,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-10-16 12:33:14,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [42132663] [2020-10-16 12:33:14,733 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:14,735 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:14,744 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 39 transitions. [2020-10-16 12:33:14,744 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:14,754 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:14,755 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:14,795 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [44857#(and (<= ~j~0 24) (< ~i~0 46))] [2020-10-16 12:33:14,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-16 12:33:14,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:14,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-16 12:33:14,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:33:14,796 INFO L87 Difference]: Start difference. First operand 96 states and 248 transitions. Second operand 26 states. [2020-10-16 12:33:16,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:16,393 INFO L93 Difference]: Finished difference Result 138 states and 339 transitions. [2020-10-16 12:33:16,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-16 12:33:16,394 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 29 [2020-10-16 12:33:16,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:16,395 INFO L225 Difference]: With dead ends: 138 [2020-10-16 12:33:16,395 INFO L226 Difference]: Without dead ends: 126 [2020-10-16 12:33:16,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1449 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1566, Invalid=3404, Unknown=0, NotChecked=0, Total=4970 [2020-10-16 12:33:16,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-16 12:33:16,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 74. [2020-10-16 12:33:16,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-16 12:33:16,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 181 transitions. [2020-10-16 12:33:16,398 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 181 transitions. Word has length 29 [2020-10-16 12:33:16,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:16,398 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 181 transitions. [2020-10-16 12:33:16,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-16 12:33:16,398 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 181 transitions. [2020-10-16 12:33:16,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-16 12:33:16,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:16,398 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:33:16,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,120 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:16,599 INFO L429 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:16,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:16,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1170458439, now seen corresponding path program 121 times [2020-10-16 12:33:16,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:16,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723438904] [2020-10-16 12:33:16,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:17,049 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:17,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723438904] [2020-10-16 12:33:17,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711410172] [2020-10-16 12:33:17,049 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:17,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:17,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-16 12:33:17,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:17,113 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:17,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:17,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2020-10-16 12:33:17,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1614279274] [2020-10-16 12:33:17,113 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:17,115 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:17,122 INFO L258 McrAutomatonBuilder]: Finished intersection with 39 states and 46 transitions. [2020-10-16 12:33:17,122 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:17,131 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:17,131 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:17,168 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [45347#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-16 12:33:17,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-16 12:33:17,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:17,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-16 12:33:17,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:33:17,169 INFO L87 Difference]: Start difference. First operand 74 states and 181 transitions. Second operand 27 states. [2020-10-16 12:33:17,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:17,993 INFO L93 Difference]: Finished difference Result 134 states and 306 transitions. [2020-10-16 12:33:17,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:33:17,994 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 30 [2020-10-16 12:33:17,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:17,994 INFO L225 Difference]: With dead ends: 134 [2020-10-16 12:33:17,994 INFO L226 Difference]: Without dead ends: 128 [2020-10-16 12:33:17,996 INFO L677 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 [2020-10-16 12:33:17,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-16 12:33:17,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 81. [2020-10-16 12:33:17,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-16 12:33:17,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 200 transitions. [2020-10-16 12:33:17,999 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 200 transitions. Word has length 30 [2020-10-16 12:33:18,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:18,001 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 200 transitions. [2020-10-16 12:33:18,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-16 12:33:18,001 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 200 transitions. [2020-10-16 12:33:18,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-16 12:33:18,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:18,001 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:33:18,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122,121 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:18,209 INFO L429 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:18,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:18,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1794443493, now seen corresponding path program 122 times [2020-10-16 12:33:18,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:18,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234084442] [2020-10-16 12:33:18,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:18,641 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:18,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234084442] [2020-10-16 12:33:18,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749484890] [2020-10-16 12:33:18,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:18,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:33:18,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:33:18,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-16 12:33:18,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:18,711 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:18,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:18,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2020-10-16 12:33:18,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1254290804] [2020-10-16 12:33:18,712 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:18,713 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:18,719 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 44 transitions. [2020-10-16 12:33:18,719 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:18,730 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:18,730 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:18,762 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [45807#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-16 12:33:18,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-16 12:33:18,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:18,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-16 12:33:18,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:33:18,763 INFO L87 Difference]: Start difference. First operand 81 states and 200 transitions. Second operand 27 states. [2020-10-16 12:33:19,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:19,711 INFO L93 Difference]: Finished difference Result 131 states and 302 transitions. [2020-10-16 12:33:19,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-16 12:33:19,712 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 30 [2020-10-16 12:33:19,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:19,713 INFO L225 Difference]: With dead ends: 131 [2020-10-16 12:33:19,713 INFO L226 Difference]: Without dead ends: 125 [2020-10-16 12:33:19,713 INFO L677 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 [2020-10-16 12:33:19,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-16 12:33:19,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 83. [2020-10-16 12:33:19,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-16 12:33:19,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 206 transitions. [2020-10-16 12:33:19,715 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 206 transitions. Word has length 30 [2020-10-16 12:33:19,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:19,715 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 206 transitions. [2020-10-16 12:33:19,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-16 12:33:19,716 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 206 transitions. [2020-10-16 12:33:19,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-16 12:33:19,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:19,716 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:33:19,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2020-10-16 12:33:19,917 INFO L429 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:19,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:19,917 INFO L82 PathProgramCache]: Analyzing trace with hash -405150211, now seen corresponding path program 123 times [2020-10-16 12:33:19,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:19,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762061154] [2020-10-16 12:33:19,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:20,319 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:20,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762061154] [2020-10-16 12:33:20,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511566495] [2020-10-16 12:33:20,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:20,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-10-16 12:33:20,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:33:20,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-16 12:33:20,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:20,390 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:20,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:20,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2020-10-16 12:33:20,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [651248421] [2020-10-16 12:33:20,391 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:20,393 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:20,399 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 44 transitions. [2020-10-16 12:33:20,400 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:20,406 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:20,407 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:20,441 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [46272#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-16 12:33:20,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-16 12:33:20,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:20,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-16 12:33:20,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:33:20,442 INFO L87 Difference]: Start difference. First operand 83 states and 206 transitions. Second operand 27 states. [2020-10-16 12:33:21,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:21,475 INFO L93 Difference]: Finished difference Result 129 states and 300 transitions. [2020-10-16 12:33:21,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-16 12:33:21,475 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 30 [2020-10-16 12:33:21,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:21,476 INFO L225 Difference]: With dead ends: 129 [2020-10-16 12:33:21,476 INFO L226 Difference]: Without dead ends: 123 [2020-10-16 12:33:21,477 INFO L677 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 [2020-10-16 12:33:21,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-16 12:33:21,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 85. [2020-10-16 12:33:21,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-16 12:33:21,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 212 transitions. [2020-10-16 12:33:21,479 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 212 transitions. Word has length 30 [2020-10-16 12:33:21,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:21,479 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 212 transitions. [2020-10-16 12:33:21,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-16 12:33:21,479 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 212 transitions. [2020-10-16 12:33:21,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-16 12:33:21,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:21,480 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:33:21,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:21,680 INFO L429 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:21,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:21,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1039869279, now seen corresponding path program 124 times [2020-10-16 12:33:21,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:21,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472854498] [2020-10-16 12:33:21,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:22,067 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:22,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472854498] [2020-10-16 12:33:22,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596405959] [2020-10-16 12:33:22,067 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:22,119 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:33:22,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:33:22,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-16 12:33:22,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:22,138 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:22,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:22,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2020-10-16 12:33:22,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1393837793] [2020-10-16 12:33:22,138 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:22,140 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:22,147 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 44 transitions. [2020-10-16 12:33:22,147 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:22,162 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:22,162 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:22,197 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [46743#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-16 12:33:22,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-16 12:33:22,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:22,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-16 12:33:22,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:33:22,198 INFO L87 Difference]: Start difference. First operand 85 states and 212 transitions. Second operand 27 states. [2020-10-16 12:33:23,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:23,319 INFO L93 Difference]: Finished difference Result 127 states and 298 transitions. [2020-10-16 12:33:23,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-16 12:33:23,319 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 30 [2020-10-16 12:33:23,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:23,320 INFO L225 Difference]: With dead ends: 127 [2020-10-16 12:33:23,320 INFO L226 Difference]: Without dead ends: 121 [2020-10-16 12:33:23,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=831, Invalid=2475, Unknown=0, NotChecked=0, Total=3306 [2020-10-16 12:33:23,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-16 12:33:23,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 87. [2020-10-16 12:33:23,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-16 12:33:23,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 218 transitions. [2020-10-16 12:33:23,323 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 218 transitions. Word has length 30 [2020-10-16 12:33:23,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:23,323 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 218 transitions. [2020-10-16 12:33:23,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-16 12:33:23,323 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 218 transitions. [2020-10-16 12:33:23,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-16 12:33:23,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:23,323 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:33:23,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-10-16 12:33:23,524 INFO L429 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:23,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:23,525 INFO L82 PathProgramCache]: Analyzing trace with hash 281597249, now seen corresponding path program 125 times [2020-10-16 12:33:23,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:23,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692663746] [2020-10-16 12:33:23,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:23,920 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:23,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692663746] [2020-10-16 12:33:23,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787364588] [2020-10-16 12:33:23,921 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:23,976 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-10-16 12:33:23,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:33:23,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-16 12:33:23,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:24,000 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:24,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:24,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2020-10-16 12:33:24,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1134410269] [2020-10-16 12:33:24,000 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:24,002 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:24,009 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 44 transitions. [2020-10-16 12:33:24,009 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:24,015 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:24,016 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:24,053 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [47220#(and (<= ~j~0 16) (< ~i~0 46))] [2020-10-16 12:33:24,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-16 12:33:24,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:24,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-16 12:33:24,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:33:24,054 INFO L87 Difference]: Start difference. First operand 87 states and 218 transitions. Second operand 27 states. [2020-10-16 12:33:25,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:25,282 INFO L93 Difference]: Finished difference Result 125 states and 296 transitions. [2020-10-16 12:33:25,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-16 12:33:25,283 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 30 [2020-10-16 12:33:25,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:25,283 INFO L225 Difference]: With dead ends: 125 [2020-10-16 12:33:25,284 INFO L226 Difference]: Without dead ends: 119 [2020-10-16 12:33:25,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=891, Invalid=2649, Unknown=0, NotChecked=0, Total=3540 [2020-10-16 12:33:25,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-16 12:33:25,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 89. [2020-10-16 12:33:25,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-16 12:33:25,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 224 transitions. [2020-10-16 12:33:25,286 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 224 transitions. Word has length 30 [2020-10-16 12:33:25,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:25,287 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 224 transitions. [2020-10-16 12:33:25,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-16 12:33:25,287 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 224 transitions. [2020-10-16 12:33:25,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-16 12:33:25,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:25,287 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:33:25,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,125 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:25,491 INFO L429 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:25,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:25,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1448798813, now seen corresponding path program 126 times [2020-10-16 12:33:25,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:25,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047709875] [2020-10-16 12:33:25,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:25,856 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:25,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047709875] [2020-10-16 12:33:25,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813763208] [2020-10-16 12:33:25,857 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:25,914 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-10-16 12:33:25,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:33:25,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-16 12:33:25,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:25,942 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:25,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:25,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2020-10-16 12:33:25,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [64483689] [2020-10-16 12:33:25,943 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:25,945 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:25,953 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 44 transitions. [2020-10-16 12:33:25,953 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:25,963 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:25,964 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:25,994 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [47703#(and (<= ~j~0 18) (< ~i~0 46))] [2020-10-16 12:33:25,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-16 12:33:25,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:25,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-16 12:33:25,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:33:25,996 INFO L87 Difference]: Start difference. First operand 89 states and 224 transitions. Second operand 27 states. [2020-10-16 12:33:27,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:27,323 INFO L93 Difference]: Finished difference Result 123 states and 294 transitions. [2020-10-16 12:33:27,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-16 12:33:27,324 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 30 [2020-10-16 12:33:27,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:27,325 INFO L225 Difference]: With dead ends: 123 [2020-10-16 12:33:27,325 INFO L226 Difference]: Without dead ends: 117 [2020-10-16 12:33:27,326 INFO L677 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 [2020-10-16 12:33:27,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-16 12:33:27,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 91. [2020-10-16 12:33:27,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-16 12:33:27,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 230 transitions. [2020-10-16 12:33:27,328 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 230 transitions. Word has length 30 [2020-10-16 12:33:27,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:27,329 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 230 transitions. [2020-10-16 12:33:27,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-16 12:33:27,329 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 230 transitions. [2020-10-16 12:33:27,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-16 12:33:27,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:27,329 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:33:27,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2020-10-16 12:33:27,533 INFO L429 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:27,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:27,534 INFO L82 PathProgramCache]: Analyzing trace with hash -2080766331, now seen corresponding path program 127 times [2020-10-16 12:33:27,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:27,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770736357] [2020-10-16 12:33:27,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:27,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:27,880 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:27,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770736357] [2020-10-16 12:33:27,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163621687] [2020-10-16 12:33:27,881 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:27,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-16 12:33:27,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:27,953 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:27,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:27,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2020-10-16 12:33:27,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [847898608] [2020-10-16 12:33:27,954 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:27,955 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:27,962 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 44 transitions. [2020-10-16 12:33:27,962 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:27,970 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:27,970 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:28,001 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [48192#(and (<= ~j~0 20) (< ~i~0 46))] [2020-10-16 12:33:28,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-16 12:33:28,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:28,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-16 12:33:28,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:33:28,002 INFO L87 Difference]: Start difference. First operand 91 states and 230 transitions. Second operand 27 states. [2020-10-16 12:33:29,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:29,429 INFO L93 Difference]: Finished difference Result 121 states and 292 transitions. [2020-10-16 12:33:29,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-16 12:33:29,429 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 30 [2020-10-16 12:33:29,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:29,430 INFO L225 Difference]: With dead ends: 121 [2020-10-16 12:33:29,430 INFO L226 Difference]: Without dead ends: 115 [2020-10-16 12:33:29,430 INFO L677 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 [2020-10-16 12:33:29,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-16 12:33:29,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 93. [2020-10-16 12:33:29,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-16 12:33:29,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 236 transitions. [2020-10-16 12:33:29,433 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 236 transitions. Word has length 30 [2020-10-16 12:33:29,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:29,433 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 236 transitions. [2020-10-16 12:33:29,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-16 12:33:29,433 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 236 transitions. [2020-10-16 12:33:29,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-16 12:33:29,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:29,434 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:33:29,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,127 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:29,635 INFO L429 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:29,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:29,635 INFO L82 PathProgramCache]: Analyzing trace with hash 792315879, now seen corresponding path program 128 times [2020-10-16 12:33:29,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:29,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946174076] [2020-10-16 12:33:29,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:29,976 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:29,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946174076] [2020-10-16 12:33:29,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044558573] [2020-10-16 12:33:29,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:30,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:33:30,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:33:30,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-16 12:33:30,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:30,052 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:30,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:30,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2020-10-16 12:33:30,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2147445773] [2020-10-16 12:33:30,053 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:30,055 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:30,062 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 44 transitions. [2020-10-16 12:33:30,062 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:30,072 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:30,072 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:30,125 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [48687#(and (<= ~j~0 22) (< ~i~0 46))] [2020-10-16 12:33:30,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-16 12:33:30,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:30,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-16 12:33:30,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:33:30,126 INFO L87 Difference]: Start difference. First operand 93 states and 236 transitions. Second operand 27 states. [2020-10-16 12:33:31,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:31,651 INFO L93 Difference]: Finished difference Result 119 states and 290 transitions. [2020-10-16 12:33:31,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-16 12:33:31,652 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 30 [2020-10-16 12:33:31,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:31,652 INFO L225 Difference]: With dead ends: 119 [2020-10-16 12:33:31,652 INFO L226 Difference]: Without dead ends: 113 [2020-10-16 12:33:31,653 INFO L677 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 [2020-10-16 12:33:31,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-16 12:33:31,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 95. [2020-10-16 12:33:31,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-16 12:33:31,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 242 transitions. [2020-10-16 12:33:31,655 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 242 transitions. Word has length 30 [2020-10-16 12:33:31,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:31,655 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 242 transitions. [2020-10-16 12:33:31,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-16 12:33:31,656 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 242 transitions. [2020-10-16 12:33:31,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-16 12:33:31,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:31,656 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:33:31,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2020-10-16 12:33:31,857 INFO L429 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:31,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:31,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1327597111, now seen corresponding path program 129 times [2020-10-16 12:33:31,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:31,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873870028] [2020-10-16 12:33:31,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:32,185 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:32,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873870028] [2020-10-16 12:33:32,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322561241] [2020-10-16 12:33:32,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:32,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-10-16 12:33:32,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:33:32,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-16 12:33:32,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:32,276 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:32,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:32,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2020-10-16 12:33:32,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1323999350] [2020-10-16 12:33:32,277 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:32,279 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:32,286 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 44 transitions. [2020-10-16 12:33:32,286 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:32,294 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:32,294 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:32,331 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [49188#(and (<= ~j~0 24) (< ~i~0 46))] [2020-10-16 12:33:32,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-16 12:33:32,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:32,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-16 12:33:32,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:33:32,332 INFO L87 Difference]: Start difference. First operand 95 states and 242 transitions. Second operand 27 states. [2020-10-16 12:33:34,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:34,001 INFO L93 Difference]: Finished difference Result 117 states and 288 transitions. [2020-10-16 12:33:34,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-16 12:33:34,002 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 30 [2020-10-16 12:33:34,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:34,003 INFO L225 Difference]: With dead ends: 117 [2020-10-16 12:33:34,003 INFO L226 Difference]: Without dead ends: 111 [2020-10-16 12:33:34,004 INFO L677 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 [2020-10-16 12:33:34,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-16 12:33:34,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 97. [2020-10-16 12:33:34,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-16 12:33:34,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 248 transitions. [2020-10-16 12:33:34,006 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 248 transitions. Word has length 30 [2020-10-16 12:33:34,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:34,006 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 248 transitions. [2020-10-16 12:33:34,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-16 12:33:34,007 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 248 transitions. [2020-10-16 12:33:34,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-16 12:33:34,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:34,007 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:33:34,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,129 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:34,208 INFO L429 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:34,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:34,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1718238251, now seen corresponding path program 130 times [2020-10-16 12:33:34,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:34,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315337892] [2020-10-16 12:33:34,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:34,528 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:34,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315337892] [2020-10-16 12:33:34,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015045857] [2020-10-16 12:33:34,529 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:34,581 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:33:34,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:33:34,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-16 12:33:34,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:34,612 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:34,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:34,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2020-10-16 12:33:34,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [220219060] [2020-10-16 12:33:34,612 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:34,614 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:34,622 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 44 transitions. [2020-10-16 12:33:34,622 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:34,633 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:34,634 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:34,667 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [49695#(and (<= ~j~0 26) (< ~i~0 46))] [2020-10-16 12:33:34,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-16 12:33:34,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:34,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-16 12:33:34,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:33:34,668 INFO L87 Difference]: Start difference. First operand 97 states and 248 transitions. Second operand 27 states. [2020-10-16 12:33:36,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:36,479 INFO L93 Difference]: Finished difference Result 117 states and 291 transitions. [2020-10-16 12:33:36,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-16 12:33:36,480 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 30 [2020-10-16 12:33:36,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:36,481 INFO L225 Difference]: With dead ends: 117 [2020-10-16 12:33:36,481 INFO L226 Difference]: Without dead ends: 111 [2020-10-16 12:33:36,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1273 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1431, Invalid=3399, Unknown=0, NotChecked=0, Total=4830 [2020-10-16 12:33:36,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-16 12:33:36,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2020-10-16 12:33:36,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-16 12:33:36,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 256 transitions. [2020-10-16 12:33:36,484 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 256 transitions. Word has length 30 [2020-10-16 12:33:36,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:36,484 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 256 transitions. [2020-10-16 12:33:36,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-16 12:33:36,484 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 256 transitions. [2020-10-16 12:33:36,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-16 12:33:36,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:36,485 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:33:36,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,130 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:36,685 INFO L429 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:36,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:36,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1734815501, now seen corresponding path program 131 times [2020-10-16 12:33:36,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:36,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54223145] [2020-10-16 12:33:36,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:37,040 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:37,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54223145] [2020-10-16 12:33:37,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085241561] [2020-10-16 12:33:37,041 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:37,092 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-10-16 12:33:37,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:33:37,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-16 12:33:37,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:37,122 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:37,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:37,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2020-10-16 12:33:37,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1889805129] [2020-10-16 12:33:37,123 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:37,125 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:37,132 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 44 transitions. [2020-10-16 12:33:37,132 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:37,133 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:37,133 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:37,173 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [50210#(and (<= ~j~0 28) (< ~i~0 46))] [2020-10-16 12:33:37,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-16 12:33:37,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:37,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-16 12:33:37,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:33:37,174 INFO L87 Difference]: Start difference. First operand 99 states and 256 transitions. Second operand 27 states. [2020-10-16 12:33:38,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:38,982 INFO L93 Difference]: Finished difference Result 117 states and 299 transitions. [2020-10-16 12:33:38,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-16 12:33:38,982 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 30 [2020-10-16 12:33:38,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:38,983 INFO L225 Difference]: With dead ends: 117 [2020-10-16 12:33:38,983 INFO L226 Difference]: Without dead ends: 105 [2020-10-16 12:33:38,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1382 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1585, Invalid=3527, Unknown=0, NotChecked=0, Total=5112 [2020-10-16 12:33:38,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-16 12:33:38,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 74. [2020-10-16 12:33:38,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-16 12:33:38,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 182 transitions. [2020-10-16 12:33:38,985 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 182 transitions. Word has length 30 [2020-10-16 12:33:38,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:38,985 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 182 transitions. [2020-10-16 12:33:38,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-16 12:33:38,985 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 182 transitions. [2020-10-16 12:33:38,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-16 12:33:38,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:38,986 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:33:39,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:39,187 INFO L429 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:39,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:39,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1128130483, now seen corresponding path program 132 times [2020-10-16 12:33:39,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:39,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998918606] [2020-10-16 12:33:39,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:39,679 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:39,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998918606] [2020-10-16 12:33:39,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795139095] [2020-10-16 12:33:39,679 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:39,745 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-10-16 12:33:39,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:33:39,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-16 12:33:39,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:39,760 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:39,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:39,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-10-16 12:33:39,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [772575211] [2020-10-16 12:33:39,761 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:39,763 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:39,770 INFO L258 McrAutomatonBuilder]: Finished intersection with 41 states and 51 transitions. [2020-10-16 12:33:39,770 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:39,785 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:39,785 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:39,824 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:39,824 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:39,857 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:39,857 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:39,862 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:39,862 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:39,872 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [50683#(and (<= ~j~0 4) (< ~i~0 46))] [2020-10-16 12:33:39,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-16 12:33:39,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:39,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-16 12:33:39,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=570, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:33:39,873 INFO L87 Difference]: Start difference. First operand 74 states and 182 transitions. Second operand 28 states. [2020-10-16 12:33:40,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:40,815 INFO L93 Difference]: Finished difference Result 114 states and 266 transitions. [2020-10-16 12:33:40,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-16 12:33:40,816 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 31 [2020-10-16 12:33:40,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:40,817 INFO L225 Difference]: With dead ends: 114 [2020-10-16 12:33:40,817 INFO L226 Difference]: Without dead ends: 108 [2020-10-16 12:33:40,817 INFO L677 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 [2020-10-16 12:33:40,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-16 12:33:40,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 82. [2020-10-16 12:33:40,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-16 12:33:40,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 202 transitions. [2020-10-16 12:33:40,819 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 202 transitions. Word has length 31 [2020-10-16 12:33:40,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:40,819 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 202 transitions. [2020-10-16 12:33:40,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-16 12:33:40,819 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 202 transitions. [2020-10-16 12:33:40,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-16 12:33:40,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:40,819 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:33:41,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2020-10-16 12:33:41,020 INFO L429 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:41,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:41,021 INFO L82 PathProgramCache]: Analyzing trace with hash 517654063, now seen corresponding path program 133 times [2020-10-16 12:33:41,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:41,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530392699] [2020-10-16 12:33:41,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:41,489 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:41,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530392699] [2020-10-16 12:33:41,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18469175] [2020-10-16 12:33:41,490 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:41,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:41,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-16 12:33:41,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:41,555 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:41,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:41,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-10-16 12:33:41,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [392757204] [2020-10-16 12:33:41,555 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:41,557 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:41,564 INFO L258 McrAutomatonBuilder]: Finished intersection with 37 states and 41 transitions. [2020-10-16 12:33:41,564 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:41,570 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:41,570 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:41,608 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [51129#(and (<= ~j~0 6) (< ~i~0 46))] [2020-10-16 12:33:41,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-16 12:33:41,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:41,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-16 12:33:41,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:33:41,609 INFO L87 Difference]: Start difference. First operand 82 states and 202 transitions. Second operand 28 states. [2020-10-16 12:33:42,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:42,655 INFO L93 Difference]: Finished difference Result 162 states and 364 transitions. [2020-10-16 12:33:42,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-16 12:33:42,656 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 31 [2020-10-16 12:33:42,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:42,657 INFO L225 Difference]: With dead ends: 162 [2020-10-16 12:33:42,657 INFO L226 Difference]: Without dead ends: 156 [2020-10-16 12:33:42,657 INFO L677 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 [2020-10-16 12:33:42,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-16 12:33:42,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 84. [2020-10-16 12:33:42,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-16 12:33:42,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 208 transitions. [2020-10-16 12:33:42,660 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 208 transitions. Word has length 31 [2020-10-16 12:33:42,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:42,660 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 208 transitions. [2020-10-16 12:33:42,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-16 12:33:42,660 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 208 transitions. [2020-10-16 12:33:42,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-16 12:33:42,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:42,661 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:33:42,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2020-10-16 12:33:42,862 INFO L429 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:42,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:42,862 INFO L82 PathProgramCache]: Analyzing trace with hash -106330991, now seen corresponding path program 134 times [2020-10-16 12:33:42,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:42,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789197949] [2020-10-16 12:33:42,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:43,316 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:43,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789197949] [2020-10-16 12:33:43,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651508462] [2020-10-16 12:33:43,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:43,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:33:43,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:33:43,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-16 12:33:43,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:43,385 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:43,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:43,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-10-16 12:33:43,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [187362047] [2020-10-16 12:33:43,386 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:43,388 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:43,395 INFO L258 McrAutomatonBuilder]: Finished intersection with 37 states and 41 transitions. [2020-10-16 12:33:43,395 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:43,401 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:43,402 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:43,441 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [51635#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-16 12:33:43,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-16 12:33:43,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:43,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-16 12:33:43,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:33:43,442 INFO L87 Difference]: Start difference. First operand 84 states and 208 transitions. Second operand 28 states. [2020-10-16 12:33:44,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:44,544 INFO L93 Difference]: Finished difference Result 159 states and 360 transitions. [2020-10-16 12:33:44,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-16 12:33:44,545 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 31 [2020-10-16 12:33:44,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:44,545 INFO L225 Difference]: With dead ends: 159 [2020-10-16 12:33:44,546 INFO L226 Difference]: Without dead ends: 153 [2020-10-16 12:33:44,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=897, Invalid=2525, Unknown=0, NotChecked=0, Total=3422 [2020-10-16 12:33:44,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-16 12:33:44,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 86. [2020-10-16 12:33:44,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-16 12:33:44,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 214 transitions. [2020-10-16 12:33:44,548 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 214 transitions. Word has length 31 [2020-10-16 12:33:44,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:44,548 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 214 transitions. [2020-10-16 12:33:44,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-16 12:33:44,548 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 214 transitions. [2020-10-16 12:33:44,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-16 12:33:44,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:44,549 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:33:44,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2020-10-16 12:33:44,750 INFO L429 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:44,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:44,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1282962291, now seen corresponding path program 135 times [2020-10-16 12:33:44,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:44,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945851771] [2020-10-16 12:33:44,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:45,183 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:45,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945851771] [2020-10-16 12:33:45,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301699571] [2020-10-16 12:33:45,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:45,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-10-16 12:33:45,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:33:45,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-16 12:33:45,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:45,270 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:45,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:45,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-10-16 12:33:45,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2024641186] [2020-10-16 12:33:45,270 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:45,272 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:45,279 INFO L258 McrAutomatonBuilder]: Finished intersection with 37 states and 41 transitions. [2020-10-16 12:33:45,279 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:45,285 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:45,286 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:45,321 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [52146#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-16 12:33:45,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-16 12:33:45,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:45,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-16 12:33:45,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:33:45,322 INFO L87 Difference]: Start difference. First operand 86 states and 214 transitions. Second operand 28 states. [2020-10-16 12:33:46,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:46,519 INFO L93 Difference]: Finished difference Result 157 states and 358 transitions. [2020-10-16 12:33:46,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-16 12:33:46,519 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 31 [2020-10-16 12:33:46,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:46,520 INFO L225 Difference]: With dead ends: 157 [2020-10-16 12:33:46,520 INFO L226 Difference]: Without dead ends: 151 [2020-10-16 12:33:46,520 INFO L677 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 [2020-10-16 12:33:46,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-16 12:33:46,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 88. [2020-10-16 12:33:46,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-16 12:33:46,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 220 transitions. [2020-10-16 12:33:46,523 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 220 transitions. Word has length 31 [2020-10-16 12:33:46,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:46,523 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 220 transitions. [2020-10-16 12:33:46,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-16 12:33:46,523 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 220 transitions. [2020-10-16 12:33:46,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-16 12:33:46,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:46,524 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:33:46,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2020-10-16 12:33:46,728 INFO L429 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:46,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:46,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1566985515, now seen corresponding path program 136 times [2020-10-16 12:33:46,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:46,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397069116] [2020-10-16 12:33:46,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:47,153 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:47,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397069116] [2020-10-16 12:33:47,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356491718] [2020-10-16 12:33:47,154 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:47,201 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:33:47,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:33:47,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-16 12:33:47,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:47,222 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:47,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:47,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-10-16 12:33:47,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [892740884] [2020-10-16 12:33:47,223 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:47,224 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:47,231 INFO L258 McrAutomatonBuilder]: Finished intersection with 37 states and 41 transitions. [2020-10-16 12:33:47,231 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:47,238 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:47,239 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:47,279 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [52663#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-16 12:33:47,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-16 12:33:47,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:47,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-16 12:33:47,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:33:47,280 INFO L87 Difference]: Start difference. First operand 88 states and 220 transitions. Second operand 28 states. [2020-10-16 12:33:48,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:48,590 INFO L93 Difference]: Finished difference Result 155 states and 356 transitions. [2020-10-16 12:33:48,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-16 12:33:48,591 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 31 [2020-10-16 12:33:48,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:48,591 INFO L225 Difference]: With dead ends: 155 [2020-10-16 12:33:48,591 INFO L226 Difference]: Without dead ends: 149 [2020-10-16 12:33:48,592 INFO L677 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 [2020-10-16 12:33:48,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-16 12:33:48,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 90. [2020-10-16 12:33:48,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-16 12:33:48,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 226 transitions. [2020-10-16 12:33:48,594 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 226 transitions. Word has length 31 [2020-10-16 12:33:48,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:48,594 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 226 transitions. [2020-10-16 12:33:48,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-16 12:33:48,595 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 226 transitions. [2020-10-16 12:33:48,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-16 12:33:48,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:48,595 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:33:48,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2020-10-16 12:33:48,796 INFO L429 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:48,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:48,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1969709751, now seen corresponding path program 137 times [2020-10-16 12:33:48,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:48,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863359899] [2020-10-16 12:33:48,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:49,211 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:49,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863359899] [2020-10-16 12:33:49,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430329415] [2020-10-16 12:33:49,211 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:49,265 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-10-16 12:33:49,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:33:49,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-16 12:33:49,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:49,288 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:49,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:49,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-10-16 12:33:49,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [555380026] [2020-10-16 12:33:49,288 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:49,290 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:49,297 INFO L258 McrAutomatonBuilder]: Finished intersection with 37 states and 41 transitions. [2020-10-16 12:33:49,297 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:49,305 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:49,306 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:49,341 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [53186#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-16 12:33:49,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-16 12:33:49,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:49,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-16 12:33:49,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:33:49,342 INFO L87 Difference]: Start difference. First operand 90 states and 226 transitions. Second operand 28 states. [2020-10-16 12:33:50,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:50,764 INFO L93 Difference]: Finished difference Result 153 states and 354 transitions. [2020-10-16 12:33:50,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-16 12:33:50,765 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 31 [2020-10-16 12:33:50,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:50,765 INFO L225 Difference]: With dead ends: 153 [2020-10-16 12:33:50,765 INFO L226 Difference]: Without dead ends: 147 [2020-10-16 12:33:50,766 INFO L677 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 [2020-10-16 12:33:50,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-16 12:33:50,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 92. [2020-10-16 12:33:50,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-16 12:33:50,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 232 transitions. [2020-10-16 12:33:50,768 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 232 transitions. Word has length 31 [2020-10-16 12:33:50,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:50,768 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 232 transitions. [2020-10-16 12:33:50,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-16 12:33:50,769 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 232 transitions. [2020-10-16 12:33:50,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-16 12:33:50,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:50,769 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:33:50,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:50,970 INFO L429 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:50,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:50,970 INFO L82 PathProgramCache]: Analyzing trace with hash 239313689, now seen corresponding path program 138 times [2020-10-16 12:33:50,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:50,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223589490] [2020-10-16 12:33:50,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:51,369 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:51,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223589490] [2020-10-16 12:33:51,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112606382] [2020-10-16 12:33:51,370 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:51,432 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-10-16 12:33:51,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:33:51,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-16 12:33:51,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:51,458 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:51,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:51,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-10-16 12:33:51,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [6047531] [2020-10-16 12:33:51,459 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:51,462 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:51,473 INFO L258 McrAutomatonBuilder]: Finished intersection with 37 states and 41 transitions. [2020-10-16 12:33:51,473 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:51,481 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:51,482 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:51,519 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [53715#(and (<= ~j~0 16) (< ~i~0 46))] [2020-10-16 12:33:51,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-16 12:33:51,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:51,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-16 12:33:51,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:33:51,520 INFO L87 Difference]: Start difference. First operand 92 states and 232 transitions. Second operand 28 states. [2020-10-16 12:33:53,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:53,019 INFO L93 Difference]: Finished difference Result 151 states and 352 transitions. [2020-10-16 12:33:53,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-16 12:33:53,020 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 31 [2020-10-16 12:33:53,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:53,021 INFO L225 Difference]: With dead ends: 151 [2020-10-16 12:33:53,021 INFO L226 Difference]: Without dead ends: 145 [2020-10-16 12:33:53,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1157, Invalid=3265, Unknown=0, NotChecked=0, Total=4422 [2020-10-16 12:33:53,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-16 12:33:53,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 94. [2020-10-16 12:33:53,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-16 12:33:53,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 238 transitions. [2020-10-16 12:33:53,023 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 238 transitions. Word has length 31 [2020-10-16 12:33:53,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:53,023 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 238 transitions. [2020-10-16 12:33:53,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-16 12:33:53,023 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 238 transitions. [2020-10-16 12:33:53,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-16 12:33:53,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:53,023 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:33:53,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2020-10-16 12:33:53,225 INFO L429 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:53,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:53,226 INFO L82 PathProgramCache]: Analyzing trace with hash -392653829, now seen corresponding path program 139 times [2020-10-16 12:33:53,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:53,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592220185] [2020-10-16 12:33:53,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:53,615 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:53,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592220185] [2020-10-16 12:33:53,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412306856] [2020-10-16 12:33:53,616 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:53,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-16 12:33:53,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:53,692 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:53,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:53,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-10-16 12:33:53,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1786108364] [2020-10-16 12:33:53,693 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:53,694 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:53,701 INFO L258 McrAutomatonBuilder]: Finished intersection with 37 states and 41 transitions. [2020-10-16 12:33:53,702 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:53,704 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:53,704 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:53,749 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [54250#(and (<= ~j~0 18) (< ~i~0 46))] [2020-10-16 12:33:53,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-16 12:33:53,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:53,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-16 12:33:53,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=633, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:33:53,751 INFO L87 Difference]: Start difference. First operand 94 states and 238 transitions. Second operand 28 states. [2020-10-16 12:33:55,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:55,366 INFO L93 Difference]: Finished difference Result 149 states and 350 transitions. [2020-10-16 12:33:55,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-16 12:33:55,367 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 31 [2020-10-16 12:33:55,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:55,367 INFO L225 Difference]: With dead ends: 149 [2020-10-16 12:33:55,368 INFO L226 Difference]: Without dead ends: 143 [2020-10-16 12:33:55,368 INFO L677 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 [2020-10-16 12:33:55,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-16 12:33:55,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 96. [2020-10-16 12:33:55,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-16 12:33:55,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 244 transitions. [2020-10-16 12:33:55,370 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 244 transitions. Word has length 31 [2020-10-16 12:33:55,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:55,370 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 244 transitions. [2020-10-16 12:33:55,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-16 12:33:55,370 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 244 transitions. [2020-10-16 12:33:55,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-16 12:33:55,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:55,371 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:33:55,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,139 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:55,571 INFO L429 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:55,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:55,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1814538915, now seen corresponding path program 140 times [2020-10-16 12:33:55,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:55,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117725697] [2020-10-16 12:33:55,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:55,963 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:55,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117725697] [2020-10-16 12:33:55,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405985686] [2020-10-16 12:33:55,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:56,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:33:56,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:33:56,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-16 12:33:56,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:56,040 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:56,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:56,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-10-16 12:33:56,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1101535108] [2020-10-16 12:33:56,040 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:56,042 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:56,049 INFO L258 McrAutomatonBuilder]: Finished intersection with 37 states and 41 transitions. [2020-10-16 12:33:56,049 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:56,055 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:56,055 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:56,093 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [54791#(and (<= ~j~0 20) (< ~i~0 46))] [2020-10-16 12:33:56,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-16 12:33:56,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:56,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-16 12:33:56,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:33:56,094 INFO L87 Difference]: Start difference. First operand 96 states and 244 transitions. Second operand 28 states. [2020-10-16 12:33:57,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:57,811 INFO L93 Difference]: Finished difference Result 147 states and 348 transitions. [2020-10-16 12:33:57,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-16 12:33:57,812 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 31 [2020-10-16 12:33:57,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:57,812 INFO L225 Difference]: With dead ends: 147 [2020-10-16 12:33:57,812 INFO L226 Difference]: Without dead ends: 141 [2020-10-16 12:33:57,813 INFO L677 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 [2020-10-16 12:33:57,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-16 12:33:57,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 98. [2020-10-16 12:33:57,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-16 12:33:57,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 250 transitions. [2020-10-16 12:33:57,816 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 250 transitions. Word has length 31 [2020-10-16 12:33:57,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:57,816 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 250 transitions. [2020-10-16 12:33:57,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-16 12:33:57,816 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 250 transitions. [2020-10-16 12:33:57,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-16 12:33:57,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:57,816 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:33:58,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,140 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:58,017 INFO L429 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:58,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:58,018 INFO L82 PathProgramCache]: Analyzing trace with hash 360515391, now seen corresponding path program 141 times [2020-10-16 12:33:58,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:58,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138442560] [2020-10-16 12:33:58,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:58,388 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:58,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138442560] [2020-10-16 12:33:58,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612576838] [2020-10-16 12:33:58,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:58,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-10-16 12:33:58,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:33:58,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-16 12:33:58,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:58,476 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:58,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:58,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-10-16 12:33:58,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2015212861] [2020-10-16 12:33:58,477 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:58,478 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:58,485 INFO L258 McrAutomatonBuilder]: Finished intersection with 37 states and 41 transitions. [2020-10-16 12:33:58,485 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:58,495 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:33:58,496 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:33:58,529 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [55338#(and (<= ~j~0 22) (< ~i~0 46))] [2020-10-16 12:33:58,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-16 12:33:58,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:58,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-16 12:33:58,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:33:58,531 INFO L87 Difference]: Start difference. First operand 98 states and 250 transitions. Second operand 28 states. [2020-10-16 12:34:00,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:34:00,331 INFO L93 Difference]: Finished difference Result 145 states and 346 transitions. [2020-10-16 12:34:00,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-16 12:34:00,332 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 31 [2020-10-16 12:34:00,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:34:00,332 INFO L225 Difference]: With dead ends: 145 [2020-10-16 12:34:00,332 INFO L226 Difference]: Without dead ends: 139 [2020-10-16 12:34:00,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1470 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1520, Invalid=3736, Unknown=0, NotChecked=0, Total=5256 [2020-10-16 12:34:00,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-16 12:34:00,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 100. [2020-10-16 12:34:00,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-16 12:34:00,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 256 transitions. [2020-10-16 12:34:00,334 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 256 transitions. Word has length 31 [2020-10-16 12:34:00,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:34:00,335 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 256 transitions. [2020-10-16 12:34:00,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-16 12:34:00,335 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 256 transitions. [2020-10-16 12:34:00,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-16 12:34:00,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:34:00,336 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:34:00,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,141 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:00,536 INFO L429 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:34:00,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:34:00,537 INFO L82 PathProgramCache]: Analyzing trace with hash -888616543, now seen corresponding path program 142 times [2020-10-16 12:34:00,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:34:00,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825564529] [2020-10-16 12:34:00,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:34:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:34:00,920 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:00,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825564529] [2020-10-16 12:34:00,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606461811] [2020-10-16 12:34:00,921 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:00,973 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:34:00,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:34:00,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-16 12:34:00,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:34:01,004 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:01,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:34:01,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-10-16 12:34:01,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [58812455] [2020-10-16 12:34:01,005 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:34:01,007 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:34:01,014 INFO L258 McrAutomatonBuilder]: Finished intersection with 37 states and 41 transitions. [2020-10-16 12:34:01,014 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:34:01,020 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:34:01,020 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:34:01,058 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [55891#(and (<= ~j~0 24) (< ~i~0 46))] [2020-10-16 12:34:01,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-16 12:34:01,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:34:01,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-16 12:34:01,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:34:01,059 INFO L87 Difference]: Start difference. First operand 100 states and 256 transitions. Second operand 28 states. [2020-10-16 12:34:02,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:34:02,944 INFO L93 Difference]: Finished difference Result 145 states and 349 transitions. [2020-10-16 12:34:02,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-16 12:34:02,944 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 31 [2020-10-16 12:34:02,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:34:02,945 INFO L225 Difference]: With dead ends: 145 [2020-10-16 12:34:02,945 INFO L226 Difference]: Without dead ends: 139 [2020-10-16 12:34:02,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1592 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1673, Invalid=3877, Unknown=0, NotChecked=0, Total=5550 [2020-10-16 12:34:02,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-16 12:34:02,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 102. [2020-10-16 12:34:02,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-16 12:34:02,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 264 transitions. [2020-10-16 12:34:02,948 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 264 transitions. Word has length 31 [2020-10-16 12:34:02,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:34:02,948 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 264 transitions. [2020-10-16 12:34:02,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-16 12:34:02,948 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 264 transitions. [2020-10-16 12:34:02,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-16 12:34:02,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:34:02,949 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:34:03,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,142 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:03,150 INFO L429 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:34:03,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:34:03,150 INFO L82 PathProgramCache]: Analyzing trace with hash -872039293, now seen corresponding path program 143 times [2020-10-16 12:34:03,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:34:03,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623728598] [2020-10-16 12:34:03,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:34:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:34:03,537 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:03,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623728598] [2020-10-16 12:34:03,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743205932] [2020-10-16 12:34:03,537 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:03,594 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-10-16 12:34:03,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:34:03,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-16 12:34:03,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:34:03,627 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:03,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:34:03,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-10-16 12:34:03,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [160020400] [2020-10-16 12:34:03,628 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:34:03,630 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:34:03,637 INFO L258 McrAutomatonBuilder]: Finished intersection with 37 states and 41 transitions. [2020-10-16 12:34:03,637 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:34:03,644 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:34:03,644 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:34:03,680 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [56452#(and (<= ~j~0 26) (< ~i~0 46))] [2020-10-16 12:34:03,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-16 12:34:03,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:34:03,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-16 12:34:03,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=581, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:34:03,681 INFO L87 Difference]: Start difference. First operand 102 states and 264 transitions. Second operand 28 states. [2020-10-16 12:34:05,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:34:05,672 INFO L93 Difference]: Finished difference Result 146 states and 359 transitions. [2020-10-16 12:34:05,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-16 12:34:05,673 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 31 [2020-10-16 12:34:05,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:34:05,673 INFO L225 Difference]: With dead ends: 146 [2020-10-16 12:34:05,673 INFO L226 Difference]: Without dead ends: 134 [2020-10-16 12:34:05,674 INFO L677 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 [2020-10-16 12:34:05,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-16 12:34:05,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 78. [2020-10-16 12:34:05,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-16 12:34:05,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 191 transitions. [2020-10-16 12:34:05,676 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 191 transitions. Word has length 31 [2020-10-16 12:34:05,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:34:05,676 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 191 transitions. [2020-10-16 12:34:05,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-16 12:34:05,677 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 191 transitions. [2020-10-16 12:34:05,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-16 12:34:05,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:34:05,677 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:34:05,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2020-10-16 12:34:05,878 INFO L429 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:34:05,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:34:05,879 INFO L82 PathProgramCache]: Analyzing trace with hash 470887608, now seen corresponding path program 144 times [2020-10-16 12:34:05,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:34:05,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449599145] [2020-10-16 12:34:05,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:34:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:34:06,452 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:06,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449599145] [2020-10-16 12:34:06,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769733473] [2020-10-16 12:34:06,453 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:06,512 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-10-16 12:34:06,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:34:06,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-16 12:34:06,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:34:06,541 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:06,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:34:06,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2020-10-16 12:34:06,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [272504951] [2020-10-16 12:34:06,541 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:34:06,543 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:34:06,551 INFO L258 McrAutomatonBuilder]: Finished intersection with 41 states and 48 transitions. [2020-10-16 12:34:06,551 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:34:06,564 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:34:06,564 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:34:06,604 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [56974#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-16 12:34:06,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-16 12:34:06,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:34:06,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-16 12:34:06,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:34:06,605 INFO L87 Difference]: Start difference. First operand 78 states and 191 transitions. Second operand 29 states. [2020-10-16 12:34:07,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:34:07,619 INFO L93 Difference]: Finished difference Result 142 states and 324 transitions. [2020-10-16 12:34:07,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-16 12:34:07,620 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 32 [2020-10-16 12:34:07,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:34:07,621 INFO L225 Difference]: With dead ends: 142 [2020-10-16 12:34:07,621 INFO L226 Difference]: Without dead ends: 136 [2020-10-16 12:34:07,621 INFO L677 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 [2020-10-16 12:34:07,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-16 12:34:07,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 85. [2020-10-16 12:34:07,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-16 12:34:07,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 210 transitions. [2020-10-16 12:34:07,624 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 210 transitions. Word has length 32 [2020-10-16 12:34:07,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:34:07,624 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 210 transitions. [2020-10-16 12:34:07,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-16 12:34:07,624 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 210 transitions. [2020-10-16 12:34:07,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-16 12:34:07,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:34:07,625 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:34:07,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 144 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2020-10-16 12:34:07,825 INFO L429 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:34:07,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:34:07,826 INFO L82 PathProgramCache]: Analyzing trace with hash 2116672154, now seen corresponding path program 145 times [2020-10-16 12:34:07,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:34:07,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413595787] [2020-10-16 12:34:07,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:34:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:34:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:08,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413595787] [2020-10-16 12:34:08,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946012086] [2020-10-16 12:34:08,344 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:34:08,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-16 12:34:08,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:34:08,410 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:08,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:34:08,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2020-10-16 12:34:08,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [945473831] [2020-10-16 12:34:08,410 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:34:08,412 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:34:08,420 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 46 transitions. [2020-10-16 12:34:08,420 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:34:08,421 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:34:08,421 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:34:08,467 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [57462#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-16 12:34:08,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-16 12:34:08,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:34:08,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-16 12:34:08,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:34:08,468 INFO L87 Difference]: Start difference. First operand 85 states and 210 transitions. Second operand 29 states. [2020-10-16 12:34:09,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:34:09,609 INFO L93 Difference]: Finished difference Result 139 states and 320 transitions. [2020-10-16 12:34:09,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-16 12:34:09,610 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 32 [2020-10-16 12:34:09,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:34:09,611 INFO L225 Difference]: With dead ends: 139 [2020-10-16 12:34:09,611 INFO L226 Difference]: Without dead ends: 133 [2020-10-16 12:34:09,611 INFO L677 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 [2020-10-16 12:34:09,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-16 12:34:09,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 87. [2020-10-16 12:34:09,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-16 12:34:09,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 216 transitions. [2020-10-16 12:34:09,613 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 216 transitions. Word has length 32 [2020-10-16 12:34:09,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:34:09,614 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 216 transitions. [2020-10-16 12:34:09,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-16 12:34:09,614 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 216 transitions. [2020-10-16 12:34:09,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-16 12:34:09,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:34:09,614 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:34:09,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2020-10-16 12:34:09,815 INFO L429 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:34:09,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:34:09,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1492687100, now seen corresponding path program 146 times [2020-10-16 12:34:09,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:34:09,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937769460] [2020-10-16 12:34:09,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:34:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:34:10,327 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:10,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937769460] [2020-10-16 12:34:10,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610367316] [2020-10-16 12:34:10,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:10,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:34:10,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:34:10,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-16 12:34:10,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:34:10,406 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:10,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:34:10,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2020-10-16 12:34:10,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1235695028] [2020-10-16 12:34:10,407 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:34:10,410 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:34:10,420 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 46 transitions. [2020-10-16 12:34:10,420 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:34:10,421 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:34:10,421 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:34:10,477 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [57955#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-16 12:34:10,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-16 12:34:10,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:34:10,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-16 12:34:10,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:34:10,478 INFO L87 Difference]: Start difference. First operand 87 states and 216 transitions. Second operand 29 states. [2020-10-16 12:34:11,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:34:11,690 INFO L93 Difference]: Finished difference Result 137 states and 318 transitions. [2020-10-16 12:34:11,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-16 12:34:11,691 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 32 [2020-10-16 12:34:11,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:34:11,692 INFO L225 Difference]: With dead ends: 137 [2020-10-16 12:34:11,692 INFO L226 Difference]: Without dead ends: 131 [2020-10-16 12:34:11,692 INFO L677 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 [2020-10-16 12:34:11,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-16 12:34:11,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 89. [2020-10-16 12:34:11,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-16 12:34:11,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 222 transitions. [2020-10-16 12:34:11,694 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 222 transitions. Word has length 32 [2020-10-16 12:34:11,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:34:11,694 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 222 transitions. [2020-10-16 12:34:11,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-16 12:34:11,695 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 222 transitions. [2020-10-16 12:34:11,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-16 12:34:11,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:34:11,695 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:34:11,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 146 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2020-10-16 12:34:11,896 INFO L429 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:34:11,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:34:11,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1412986914, now seen corresponding path program 147 times [2020-10-16 12:34:11,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:34:11,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727837185] [2020-10-16 12:34:11,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:34:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:34:12,371 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:12,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727837185] [2020-10-16 12:34:12,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098017783] [2020-10-16 12:34:12,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:12,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-10-16 12:34:12,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:34:12,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-16 12:34:12,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:34:12,457 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:12,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:34:12,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2020-10-16 12:34:12,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1205274993] [2020-10-16 12:34:12,458 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:34:12,460 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:34:12,470 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 46 transitions. [2020-10-16 12:34:12,470 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:34:12,488 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:34:12,489 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:34:12,529 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [58454#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-16 12:34:12,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-16 12:34:12,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:34:12,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-16 12:34:12,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:34:12,531 INFO L87 Difference]: Start difference. First operand 89 states and 222 transitions. Second operand 29 states. [2020-10-16 12:34:13,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:34:13,867 INFO L93 Difference]: Finished difference Result 135 states and 316 transitions. [2020-10-16 12:34:13,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-16 12:34:13,868 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 32 [2020-10-16 12:34:13,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:34:13,868 INFO L225 Difference]: With dead ends: 135 [2020-10-16 12:34:13,868 INFO L226 Difference]: Without dead ends: 129 [2020-10-16 12:34:13,869 INFO L677 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 [2020-10-16 12:34:13,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-16 12:34:13,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 91. [2020-10-16 12:34:13,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-16 12:34:13,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 228 transitions. [2020-10-16 12:34:13,872 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 228 transitions. Word has length 32 [2020-10-16 12:34:13,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:34:13,873 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 228 transitions. [2020-10-16 12:34:13,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-16 12:34:13,873 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 228 transitions. [2020-10-16 12:34:13,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-16 12:34:13,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:34:13,873 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:34:14,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2020-10-16 12:34:14,074 INFO L429 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:34:14,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:34:14,074 INFO L82 PathProgramCache]: Analyzing trace with hash 32032576, now seen corresponding path program 148 times [2020-10-16 12:34:14,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:34:14,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811218005] [2020-10-16 12:34:14,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:34:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:34:14,536 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:14,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811218005] [2020-10-16 12:34:14,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865092681] [2020-10-16 12:34:14,537 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:14,589 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:34:14,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:34:14,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-16 12:34:14,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:34:14,610 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:14,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:34:14,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2020-10-16 12:34:14,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1567262252] [2020-10-16 12:34:14,611 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:34:14,613 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:34:14,620 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 46 transitions. [2020-10-16 12:34:14,620 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:34:14,621 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:34:14,621 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:34:14,666 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [58959#(and (<= ~j~0 16) (< ~i~0 46))] [2020-10-16 12:34:14,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-16 12:34:14,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:34:14,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-16 12:34:14,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:34:14,667 INFO L87 Difference]: Start difference. First operand 91 states and 228 transitions. Second operand 29 states. [2020-10-16 12:34:16,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:34:16,072 INFO L93 Difference]: Finished difference Result 133 states and 314 transitions. [2020-10-16 12:34:16,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-16 12:34:16,074 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 32 [2020-10-16 12:34:16,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:34:16,074 INFO L225 Difference]: With dead ends: 133 [2020-10-16 12:34:16,074 INFO L226 Difference]: Without dead ends: 127 [2020-10-16 12:34:16,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 891 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1008, Invalid=3024, Unknown=0, NotChecked=0, Total=4032 [2020-10-16 12:34:16,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-16 12:34:16,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 93. [2020-10-16 12:34:16,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-16 12:34:16,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 234 transitions. [2020-10-16 12:34:16,077 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 234 transitions. Word has length 32 [2020-10-16 12:34:16,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:34:16,077 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 234 transitions. [2020-10-16 12:34:16,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-16 12:34:16,077 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 234 transitions. [2020-10-16 12:34:16,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-16 12:34:16,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:34:16,078 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:34:16,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:16,279 INFO L429 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:34:16,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:34:16,279 INFO L82 PathProgramCache]: Analyzing trace with hash -726239454, now seen corresponding path program 149 times [2020-10-16 12:34:16,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:34:16,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109198633] [2020-10-16 12:34:16,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:34:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:34:16,725 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:16,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109198633] [2020-10-16 12:34:16,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147686343] [2020-10-16 12:34:16,726 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:16,783 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-10-16 12:34:16,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:34:16,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-16 12:34:16,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:34:16,812 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:16,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:34:16,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2020-10-16 12:34:16,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [560042694] [2020-10-16 12:34:16,813 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:34:16,814 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:34:16,822 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 46 transitions. [2020-10-16 12:34:16,822 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:34:16,832 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:34:16,833 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:34:16,871 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [59470#(and (<= ~j~0 18) (< ~i~0 46))] [2020-10-16 12:34:16,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-16 12:34:16,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:34:16,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-16 12:34:16,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:34:16,873 INFO L87 Difference]: Start difference. First operand 93 states and 234 transitions. Second operand 29 states. [2020-10-16 12:34:18,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:34:18,432 INFO L93 Difference]: Finished difference Result 131 states and 312 transitions. [2020-10-16 12:34:18,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-16 12:34:18,433 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 32 [2020-10-16 12:34:18,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:34:18,434 INFO L225 Difference]: With dead ends: 131 [2020-10-16 12:34:18,434 INFO L226 Difference]: Without dead ends: 125 [2020-10-16 12:34:18,434 INFO L677 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 [2020-10-16 12:34:18,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-16 12:34:18,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 95. [2020-10-16 12:34:18,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-16 12:34:18,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 240 transitions. [2020-10-16 12:34:18,437 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 240 transitions. Word has length 32 [2020-10-16 12:34:18,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:34:18,437 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 240 transitions. [2020-10-16 12:34:18,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-16 12:34:18,437 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 240 transitions. [2020-10-16 12:34:18,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-16 12:34:18,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:34:18,437 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:34:18,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,149 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:18,638 INFO L429 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:34:18,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:34:18,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1838331780, now seen corresponding path program 150 times [2020-10-16 12:34:18,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:34:18,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073824724] [2020-10-16 12:34:18,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:34:18,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:34:19,074 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:19,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073824724] [2020-10-16 12:34:19,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704892666] [2020-10-16 12:34:19,074 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:19,133 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-10-16 12:34:19,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:34:19,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-16 12:34:19,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:34:19,163 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:19,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:34:19,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2020-10-16 12:34:19,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [314302747] [2020-10-16 12:34:19,164 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:34:19,166 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:34:19,174 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 46 transitions. [2020-10-16 12:34:19,175 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:34:19,185 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:34:19,185 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:34:19,225 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [59987#(and (<= ~j~0 20) (< ~i~0 46))] [2020-10-16 12:34:19,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-16 12:34:19,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:34:19,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-16 12:34:19,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:34:19,226 INFO L87 Difference]: Start difference. First operand 95 states and 240 transitions. Second operand 29 states. [2020-10-16 12:34:20,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:34:20,905 INFO L93 Difference]: Finished difference Result 129 states and 310 transitions. [2020-10-16 12:34:20,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-16 12:34:20,906 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 32 [2020-10-16 12:34:20,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:34:20,907 INFO L225 Difference]: With dead ends: 129 [2020-10-16 12:34:20,907 INFO L226 Difference]: Without dead ends: 123 [2020-10-16 12:34:20,907 INFO L677 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 [2020-10-16 12:34:20,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-16 12:34:20,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 97. [2020-10-16 12:34:20,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-16 12:34:20,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 246 transitions. [2020-10-16 12:34:20,911 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 246 transitions. Word has length 32 [2020-10-16 12:34:20,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:34:20,911 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 246 transitions. [2020-10-16 12:34:20,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-16 12:34:20,911 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 246 transitions. [2020-10-16 12:34:20,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-16 12:34:20,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:34:20,912 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:34:21,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,150 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:21,119 INFO L429 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:34:21,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:34:21,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1206364262, now seen corresponding path program 151 times [2020-10-16 12:34:21,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:34:21,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501875735] [2020-10-16 12:34:21,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:34:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:34:21,554 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:21,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501875735] [2020-10-16 12:34:21,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108720651] [2020-10-16 12:34:21,555 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:34:21,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-16 12:34:21,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:34:21,634 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:21,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:34:21,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2020-10-16 12:34:21,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [552408824] [2020-10-16 12:34:21,635 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:34:21,637 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:34:21,645 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 46 transitions. [2020-10-16 12:34:21,645 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:34:21,655 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:34:21,655 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:34:21,695 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [60510#(and (<= ~j~0 22) (< ~i~0 46))] [2020-10-16 12:34:21,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-16 12:34:21,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:34:21,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-16 12:34:21,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:34:21,696 INFO L87 Difference]: Start difference. First operand 97 states and 246 transitions. Second operand 29 states. [2020-10-16 12:34:23,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:34:23,498 INFO L93 Difference]: Finished difference Result 127 states and 308 transitions. [2020-10-16 12:34:23,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-16 12:34:23,498 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 32 [2020-10-16 12:34:23,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:34:23,499 INFO L225 Difference]: With dead ends: 127 [2020-10-16 12:34:23,499 INFO L226 Difference]: Without dead ends: 121 [2020-10-16 12:34:23,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1188 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1278, Invalid=3552, Unknown=0, NotChecked=0, Total=4830 [2020-10-16 12:34:23,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-16 12:34:23,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 99. [2020-10-16 12:34:23,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-16 12:34:23,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 252 transitions. [2020-10-16 12:34:23,503 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 252 transitions. Word has length 32 [2020-10-16 12:34:23,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:34:23,503 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 252 transitions. [2020-10-16 12:34:23,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-16 12:34:23,504 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 252 transitions. [2020-10-16 12:34:23,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-16 12:34:23,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:34:23,504 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:34:23,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,151 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:23,713 INFO L429 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:34:23,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:34:23,714 INFO L82 PathProgramCache]: Analyzing trace with hash -215520824, now seen corresponding path program 152 times [2020-10-16 12:34:23,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:34:23,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491627734] [2020-10-16 12:34:23,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:34:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:34:24,158 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:24,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491627734] [2020-10-16 12:34:24,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039842697] [2020-10-16 12:34:24,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:24,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:34:24,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:34:24,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-16 12:34:24,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:34:24,248 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:24,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:34:24,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2020-10-16 12:34:24,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1754980130] [2020-10-16 12:34:24,249 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:34:24,252 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:34:24,263 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 46 transitions. [2020-10-16 12:34:24,263 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:34:24,264 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:34:24,265 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:34:24,326 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [61039#(and (<= ~j~0 24) (< ~i~0 46))] [2020-10-16 12:34:24,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-16 12:34:24,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:34:24,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-16 12:34:24,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:34:24,327 INFO L87 Difference]: Start difference. First operand 99 states and 252 transitions. Second operand 29 states. [2020-10-16 12:34:26,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:34:26,238 INFO L93 Difference]: Finished difference Result 125 states and 306 transitions. [2020-10-16 12:34:26,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-16 12:34:26,239 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 32 [2020-10-16 12:34:26,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:34:26,240 INFO L225 Difference]: With dead ends: 125 [2020-10-16 12:34:26,240 INFO L226 Difference]: Without dead ends: 119 [2020-10-16 12:34:26,240 INFO L677 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 [2020-10-16 12:34:26,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-16 12:34:26,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 101. [2020-10-16 12:34:26,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-16 12:34:26,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 258 transitions. [2020-10-16 12:34:26,249 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 258 transitions. Word has length 32 [2020-10-16 12:34:26,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:34:26,249 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 258 transitions. [2020-10-16 12:34:26,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-16 12:34:26,249 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 258 transitions. [2020-10-16 12:34:26,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-16 12:34:26,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:34:26,250 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:34:26,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,152 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:26,451 INFO L429 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:34:26,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:34:26,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1959533482, now seen corresponding path program 153 times [2020-10-16 12:34:26,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:34:26,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087315025] [2020-10-16 12:34:26,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:34:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:34:26,864 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:26,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087315025] [2020-10-16 12:34:26,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752711669] [2020-10-16 12:34:26,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:26,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-10-16 12:34:26,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:34:26,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-16 12:34:26,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:34:26,947 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:26,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:34:26,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2020-10-16 12:34:26,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [931053912] [2020-10-16 12:34:26,948 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:34:26,950 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:34:26,957 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 46 transitions. [2020-10-16 12:34:26,957 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:34:26,967 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:34:26,967 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:34:27,003 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [61574#(and (<= ~j~0 26) (< ~i~0 46))] [2020-10-16 12:34:27,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-16 12:34:27,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:34:27,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-16 12:34:27,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:34:27,004 INFO L87 Difference]: Start difference. First operand 101 states and 258 transitions. Second operand 29 states. [2020-10-16 12:34:29,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:34:29,021 INFO L93 Difference]: Finished difference Result 123 states and 304 transitions. [2020-10-16 12:34:29,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-16 12:34:29,022 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 32 [2020-10-16 12:34:29,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:34:29,022 INFO L225 Difference]: With dead ends: 123 [2020-10-16 12:34:29,023 INFO L226 Difference]: Without dead ends: 117 [2020-10-16 12:34:29,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1406 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1538, Invalid=3864, Unknown=0, NotChecked=0, Total=5402 [2020-10-16 12:34:29,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-16 12:34:29,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 103. [2020-10-16 12:34:29,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-16 12:34:29,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 264 transitions. [2020-10-16 12:34:29,026 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 264 transitions. Word has length 32 [2020-10-16 12:34:29,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:34:29,026 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 264 transitions. [2020-10-16 12:34:29,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-16 12:34:29,026 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 264 transitions. [2020-10-16 12:34:29,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-16 12:34:29,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:34:29,026 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:34:29,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,153 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:29,227 INFO L429 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:34:29,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:34:29,228 INFO L82 PathProgramCache]: Analyzing trace with hash 710401548, now seen corresponding path program 154 times [2020-10-16 12:34:29,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:34:29,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318593869] [2020-10-16 12:34:29,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:34:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:34:29,671 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:29,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318593869] [2020-10-16 12:34:29,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138659299] [2020-10-16 12:34:29,672 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:29,723 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:34:29,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:34:29,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-16 12:34:29,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:34:29,760 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:29,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:34:29,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2020-10-16 12:34:29,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [233687299] [2020-10-16 12:34:29,760 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:34:29,762 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:34:29,784 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 46 transitions. [2020-10-16 12:34:29,784 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:34:29,794 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:34:29,795 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:34:29,832 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [62115#(and (<= ~j~0 28) (< ~i~0 46))] [2020-10-16 12:34:29,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-16 12:34:29,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:34:29,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-16 12:34:29,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:34:29,833 INFO L87 Difference]: Start difference. First operand 103 states and 264 transitions. Second operand 29 states. [2020-10-16 12:34:32,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:34:32,066 INFO L93 Difference]: Finished difference Result 123 states and 307 transitions. [2020-10-16 12:34:32,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-16 12:34:32,067 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 32 [2020-10-16 12:34:32,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:34:32,067 INFO L225 Difference]: With dead ends: 123 [2020-10-16 12:34:32,067 INFO L226 Difference]: Without dead ends: 117 [2020-10-16 12:34:32,068 INFO L677 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 [2020-10-16 12:34:32,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-16 12:34:32,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 105. [2020-10-16 12:34:32,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-16 12:34:32,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 272 transitions. [2020-10-16 12:34:32,070 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 272 transitions. Word has length 32 [2020-10-16 12:34:32,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:34:32,071 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 272 transitions. [2020-10-16 12:34:32,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-16 12:34:32,071 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 272 transitions. [2020-10-16 12:34:32,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-16 12:34:32,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:34:32,071 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:34:32,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155,154 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:32,272 INFO L429 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:34:32,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:34:32,272 INFO L82 PathProgramCache]: Analyzing trace with hash 726978798, now seen corresponding path program 155 times [2020-10-16 12:34:32,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:34:32,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205143349] [2020-10-16 12:34:32,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:34:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:34:32,739 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:32,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205143349] [2020-10-16 12:34:32,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760795314] [2020-10-16 12:34:32,739 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:32,796 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-10-16 12:34:32,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:34:32,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-16 12:34:32,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:34:32,834 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:32,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:34:32,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2020-10-16 12:34:32,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1138805355] [2020-10-16 12:34:32,835 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:34:32,838 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:34:32,846 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 46 transitions. [2020-10-16 12:34:32,846 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:34:32,857 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:34:32,857 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:34:32,895 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [62664#(and (<= ~j~0 30) (< ~i~0 46))] [2020-10-16 12:34:32,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-16 12:34:32,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:34:32,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-16 12:34:32,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:34:32,896 INFO L87 Difference]: Start difference. First operand 105 states and 272 transitions. Second operand 29 states. [2020-10-16 12:34:35,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:34:35,198 INFO L93 Difference]: Finished difference Result 123 states and 315 transitions. [2020-10-16 12:34:35,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-16 12:34:35,199 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 32 [2020-10-16 12:34:35,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:34:35,200 INFO L225 Difference]: With dead ends: 123 [2020-10-16 12:34:35,200 INFO L226 Difference]: Without dead ends: 111 [2020-10-16 12:34:35,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1640 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1860, Invalid=4146, Unknown=0, NotChecked=0, Total=6006 [2020-10-16 12:34:35,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-16 12:34:35,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 78. [2020-10-16 12:34:35,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-16 12:34:35,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 192 transitions. [2020-10-16 12:34:35,202 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 192 transitions. Word has length 32 [2020-10-16 12:34:35,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:34:35,202 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 192 transitions. [2020-10-16 12:34:35,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-16 12:34:35,202 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 192 transitions. [2020-10-16 12:34:35,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-16 12:34:35,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:34:35,203 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:34:35,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2020-10-16 12:34:35,404 INFO L429 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:34:35,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:34:35,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1801619636, now seen corresponding path program 156 times [2020-10-16 12:34:35,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:34:35,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613677006] [2020-10-16 12:34:35,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:34:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:34:35,980 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:35,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613677006] [2020-10-16 12:34:35,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705897352] [2020-10-16 12:34:35,981 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:36,037 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-10-16 12:34:36,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:34:36,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-16 12:34:36,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:34:36,052 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:36,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:34:36,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-10-16 12:34:36,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1138105723] [2020-10-16 12:34:36,052 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:34:36,054 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:34:36,063 INFO L258 McrAutomatonBuilder]: Finished intersection with 43 states and 53 transitions. [2020-10-16 12:34:36,063 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:34:36,067 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:34:36,067 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:34:36,104 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:34:36,104 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:34:36,139 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:34:36,140 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:34:36,149 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:34:36,149 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:34:36,161 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [63167#(and (<= ~j~0 4) (< ~i~0 46))] [2020-10-16 12:34:36,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-16 12:34:36,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:34:36,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-16 12:34:36,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=656, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:34:36,162 INFO L87 Difference]: Start difference. First operand 78 states and 192 transitions. Second operand 30 states. [2020-10-16 12:34:37,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:34:37,277 INFO L93 Difference]: Finished difference Result 120 states and 280 transitions. [2020-10-16 12:34:37,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-16 12:34:37,278 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 33 [2020-10-16 12:34:37,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:34:37,278 INFO L225 Difference]: With dead ends: 120 [2020-10-16 12:34:37,278 INFO L226 Difference]: Without dead ends: 114 [2020-10-16 12:34:37,279 INFO L677 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 [2020-10-16 12:34:37,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-16 12:34:37,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 86. [2020-10-16 12:34:37,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-16 12:34:37,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 212 transitions. [2020-10-16 12:34:37,281 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 212 transitions. Word has length 33 [2020-10-16 12:34:37,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:34:37,281 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 212 transitions. [2020-10-16 12:34:37,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-16 12:34:37,281 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 212 transitions. [2020-10-16 12:34:37,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-16 12:34:37,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:34:37,282 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:34:37,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:37,483 INFO L429 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:34:37,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:34:37,483 INFO L82 PathProgramCache]: Analyzing trace with hash -750635858, now seen corresponding path program 157 times [2020-10-16 12:34:37,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:34:37,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107247618] [2020-10-16 12:34:37,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:34:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:34:38,054 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:38,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107247618] [2020-10-16 12:34:38,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093219171] [2020-10-16 12:34:38,055 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:34:38,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-16 12:34:38,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:34:38,123 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:38,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:34:38,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-10-16 12:34:38,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [620813815] [2020-10-16 12:34:38,124 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:34:38,125 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:34:38,133 INFO L258 McrAutomatonBuilder]: Finished intersection with 39 states and 43 transitions. [2020-10-16 12:34:38,133 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:34:38,141 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:34:38,141 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:34:38,178 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [63639#(and (<= ~j~0 6) (< ~i~0 46))] [2020-10-16 12:34:38,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-16 12:34:38,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:34:38,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-16 12:34:38,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=679, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:34:38,179 INFO L87 Difference]: Start difference. First operand 86 states and 212 transitions. Second operand 30 states. [2020-10-16 12:34:39,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:34:39,366 INFO L93 Difference]: Finished difference Result 172 states and 386 transitions. [2020-10-16 12:34:39,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-16 12:34:39,366 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 33 [2020-10-16 12:34:39,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:34:39,367 INFO L225 Difference]: With dead ends: 172 [2020-10-16 12:34:39,367 INFO L226 Difference]: Without dead ends: 166 [2020-10-16 12:34:39,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1005, Invalid=2655, Unknown=0, NotChecked=0, Total=3660 [2020-10-16 12:34:39,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-16 12:34:39,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 88. [2020-10-16 12:34:39,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-16 12:34:39,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 218 transitions. [2020-10-16 12:34:39,369 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 218 transitions. Word has length 33 [2020-10-16 12:34:39,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:34:39,370 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 218 transitions. [2020-10-16 12:34:39,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-16 12:34:39,370 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 218 transitions. [2020-10-16 12:34:39,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-16 12:34:39,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:34:39,370 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:34:39,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2020-10-16 12:34:39,571 INFO L429 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:34:39,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:34:39,572 INFO L82 PathProgramCache]: Analyzing trace with hash 895148688, now seen corresponding path program 158 times [2020-10-16 12:34:39,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:34:39,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288992991] [2020-10-16 12:34:39,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:34:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:34:40,101 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:40,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288992991] [2020-10-16 12:34:40,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715280415] [2020-10-16 12:34:40,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:40,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:34:40,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:34:40,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-16 12:34:40,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:34:40,174 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:40,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:34:40,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-10-16 12:34:40,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1910106616] [2020-10-16 12:34:40,174 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:34:40,176 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:34:40,184 INFO L258 McrAutomatonBuilder]: Finished intersection with 39 states and 43 transitions. [2020-10-16 12:34:40,184 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:34:40,189 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:34:40,189 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:34:40,233 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [64175#(and (<= ~j~0 8) (< ~i~0 46))] [2020-10-16 12:34:40,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-16 12:34:40,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:34:40,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-16 12:34:40,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=698, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:34:40,234 INFO L87 Difference]: Start difference. First operand 88 states and 218 transitions. Second operand 30 states. [2020-10-16 12:34:41,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:34:41,591 INFO L93 Difference]: Finished difference Result 169 states and 382 transitions. [2020-10-16 12:34:41,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-16 12:34:41,592 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 33 [2020-10-16 12:34:41,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:34:41,593 INFO L225 Difference]: With dead ends: 169 [2020-10-16 12:34:41,593 INFO L226 Difference]: Without dead ends: 163 [2020-10-16 12:34:41,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 832 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1028, Invalid=2878, Unknown=0, NotChecked=0, Total=3906 [2020-10-16 12:34:41,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-16 12:34:41,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 90. [2020-10-16 12:34:41,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-16 12:34:41,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 224 transitions. [2020-10-16 12:34:41,596 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 224 transitions. Word has length 33 [2020-10-16 12:34:41,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:34:41,596 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 224 transitions. [2020-10-16 12:34:41,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-16 12:34:41,597 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 224 transitions. [2020-10-16 12:34:41,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-16 12:34:41,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:34:41,597 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:34:41,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,158 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:41,798 INFO L429 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:34:41,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:34:41,798 INFO L82 PathProgramCache]: Analyzing trace with hash 271163634, now seen corresponding path program 159 times [2020-10-16 12:34:41,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:34:41,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466196149] [2020-10-16 12:34:41,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:34:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:34:42,374 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:42,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466196149] [2020-10-16 12:34:42,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214556060] [2020-10-16 12:34:42,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:42,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-10-16 12:34:42,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:34:42,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-16 12:34:42,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:34:42,461 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:42,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:34:42,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-10-16 12:34:42,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1059818837] [2020-10-16 12:34:42,462 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:34:42,465 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:34:42,474 INFO L258 McrAutomatonBuilder]: Finished intersection with 39 states and 43 transitions. [2020-10-16 12:34:42,475 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:34:42,478 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:34:42,478 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:34:42,522 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [64716#(and (<= ~j~0 10) (< ~i~0 46))] [2020-10-16 12:34:42,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-16 12:34:42,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:34:42,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-16 12:34:42,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=713, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:34:42,523 INFO L87 Difference]: Start difference. First operand 90 states and 224 transitions. Second operand 30 states. [2020-10-16 12:34:43,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:34:43,948 INFO L93 Difference]: Finished difference Result 167 states and 380 transitions. [2020-10-16 12:34:43,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-16 12:34:43,949 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 33 [2020-10-16 12:34:43,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:34:43,950 INFO L225 Difference]: With dead ends: 167 [2020-10-16 12:34:43,950 INFO L226 Difference]: Without dead ends: 161 [2020-10-16 12:34:43,950 INFO L677 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 [2020-10-16 12:34:43,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-16 12:34:43,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 92. [2020-10-16 12:34:43,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-16 12:34:43,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 230 transitions. [2020-10-16 12:34:43,953 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 230 transitions. Word has length 33 [2020-10-16 12:34:43,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:34:43,953 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 230 transitions. [2020-10-16 12:34:43,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-16 12:34:43,954 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 230 transitions. [2020-10-16 12:34:43,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-16 12:34:43,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:34:43,954 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:34:44,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable160 [2020-10-16 12:34:44,162 INFO L429 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:34:44,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:34:44,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1660456916, now seen corresponding path program 160 times [2020-10-16 12:34:44,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:34:44,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544033655] [2020-10-16 12:34:44,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:34:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:34:44,661 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:44,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544033655] [2020-10-16 12:34:44,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250119997] [2020-10-16 12:34:44,662 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:44,713 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:34:44,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:34:44,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-16 12:34:44,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:34:44,736 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:44,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:34:44,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-10-16 12:34:44,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [909765648] [2020-10-16 12:34:44,737 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:34:44,739 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:34:44,747 INFO L258 McrAutomatonBuilder]: Finished intersection with 39 states and 43 transitions. [2020-10-16 12:34:44,747 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:34:44,752 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:34:44,752 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:34:44,797 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [65263#(and (<= ~j~0 12) (< ~i~0 46))] [2020-10-16 12:34:44,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-16 12:34:44,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:34:44,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-16 12:34:44,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=724, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:34:44,798 INFO L87 Difference]: Start difference. First operand 92 states and 230 transitions. Second operand 30 states. [2020-10-16 12:34:46,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:34:46,352 INFO L93 Difference]: Finished difference Result 165 states and 378 transitions. [2020-10-16 12:34:46,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-16 12:34:46,353 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 33 [2020-10-16 12:34:46,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:34:46,354 INFO L225 Difference]: With dead ends: 165 [2020-10-16 12:34:46,356 INFO L226 Difference]: Without dead ends: 159 [2020-10-16 12:34:46,357 INFO L677 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 [2020-10-16 12:34:46,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-16 12:34:46,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 94. [2020-10-16 12:34:46,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-16 12:34:46,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 236 transitions. [2020-10-16 12:34:46,359 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 236 transitions. Word has length 33 [2020-10-16 12:34:46,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:34:46,359 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 236 transitions. [2020-10-16 12:34:46,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-16 12:34:46,359 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 236 transitions. [2020-10-16 12:34:46,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-16 12:34:46,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:34:46,359 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:34:46,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,160 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:46,567 INFO L429 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:34:46,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:34:46,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1189490890, now seen corresponding path program 161 times [2020-10-16 12:34:46,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:34:46,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41801360] [2020-10-16 12:34:46,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:34:46,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:34:47,084 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:47,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41801360] [2020-10-16 12:34:47,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085215238] [2020-10-16 12:34:47,085 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:47,144 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2020-10-16 12:34:47,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:34:47,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-16 12:34:47,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:34:47,170 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:47,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:34:47,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-10-16 12:34:47,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1909070303] [2020-10-16 12:34:47,171 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:34:47,173 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:34:47,181 INFO L258 McrAutomatonBuilder]: Finished intersection with 39 states and 43 transitions. [2020-10-16 12:34:47,182 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:34:47,198 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:34:47,198 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:34:47,236 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [65816#(and (<= ~j~0 14) (< ~i~0 46))] [2020-10-16 12:34:47,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-16 12:34:47,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:34:47,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-16 12:34:47,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:34:47,237 INFO L87 Difference]: Start difference. First operand 94 states and 236 transitions. Second operand 30 states. [2020-10-16 12:34:48,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:34:48,884 INFO L93 Difference]: Finished difference Result 163 states and 376 transitions. [2020-10-16 12:34:48,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-16 12:34:48,885 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 33 [2020-10-16 12:34:48,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:34:48,885 INFO L225 Difference]: With dead ends: 163 [2020-10-16 12:34:48,885 INFO L226 Difference]: Without dead ends: 157 [2020-10-16 12:34:48,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1141 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1193, Invalid=3499, Unknown=0, NotChecked=0, Total=4692 [2020-10-16 12:34:48,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-16 12:34:48,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 96. [2020-10-16 12:34:48,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-16 12:34:48,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 242 transitions. [2020-10-16 12:34:48,888 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 242 transitions. Word has length 33 [2020-10-16 12:34:48,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:34:48,888 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 242 transitions. [2020-10-16 12:34:48,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-16 12:34:48,889 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 242 transitions. [2020-10-16 12:34:48,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-16 12:34:48,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:34:48,889 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:34:49,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,161 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:49,090 INFO L429 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:34:49,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:34:49,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1947762920, now seen corresponding path program 162 times [2020-10-16 12:34:49,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:34:49,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602838777] [2020-10-16 12:34:49,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:34:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:34:49,587 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:49,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602838777] [2020-10-16 12:34:49,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782046684] [2020-10-16 12:34:49,588 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:49,647 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-10-16 12:34:49,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:34:49,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-16 12:34:49,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:34:49,674 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:49,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:34:49,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-10-16 12:34:49,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [170465214] [2020-10-16 12:34:49,675 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:34:49,677 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:34:49,685 INFO L258 McrAutomatonBuilder]: Finished intersection with 39 states and 43 transitions. [2020-10-16 12:34:49,685 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:34:49,694 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:34:49,694 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:34:49,733 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [66375#(and (<= ~j~0 16) (< ~i~0 46))] [2020-10-16 12:34:49,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-16 12:34:49,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:34:49,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-16 12:34:49,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:34:49,734 INFO L87 Difference]: Start difference. First operand 96 states and 242 transitions. Second operand 30 states. [2020-10-16 12:34:51,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:34:51,529 INFO L93 Difference]: Finished difference Result 161 states and 374 transitions. [2020-10-16 12:34:51,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-16 12:34:51,530 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 33 [2020-10-16 12:34:51,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:34:51,531 INFO L225 Difference]: With dead ends: 161 [2020-10-16 12:34:51,531 INFO L226 Difference]: Without dead ends: 155 [2020-10-16 12:34:51,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1280, Invalid=3690, Unknown=0, NotChecked=0, Total=4970 [2020-10-16 12:34:51,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-16 12:34:51,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 98. [2020-10-16 12:34:51,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-16 12:34:51,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 248 transitions. [2020-10-16 12:34:51,534 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 248 transitions. Word has length 33 [2020-10-16 12:34:51,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:34:51,534 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 248 transitions. [2020-10-16 12:34:51,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-16 12:34:51,534 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 248 transitions. [2020-10-16 12:34:51,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-16 12:34:51,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:34:51,534 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:34:51,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,162 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:51,735 INFO L429 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:34:51,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:34:51,736 INFO L82 PathProgramCache]: Analyzing trace with hash 616808314, now seen corresponding path program 163 times [2020-10-16 12:34:51,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:34:51,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892610852] [2020-10-16 12:34:51,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:34:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:34:52,219 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:52,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892610852] [2020-10-16 12:34:52,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855132366] [2020-10-16 12:34:52,220 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:34:52,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-16 12:34:52,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:34:52,312 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:52,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:34:52,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-10-16 12:34:52,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1055544979] [2020-10-16 12:34:52,313 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:34:52,315 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:34:52,323 INFO L258 McrAutomatonBuilder]: Finished intersection with 39 states and 43 transitions. [2020-10-16 12:34:52,323 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:34:52,327 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:34:52,327 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:34:52,377 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [66940#(and (<= ~j~0 18) (< ~i~0 46))] [2020-10-16 12:34:52,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-16 12:34:52,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:34:52,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-16 12:34:52,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=733, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:34:52,378 INFO L87 Difference]: Start difference. First operand 98 states and 248 transitions. Second operand 30 states. [2020-10-16 12:34:54,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:34:54,317 INFO L93 Difference]: Finished difference Result 159 states and 372 transitions. [2020-10-16 12:34:54,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-16 12:34:54,318 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 33 [2020-10-16 12:34:54,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:34:54,319 INFO L225 Difference]: With dead ends: 159 [2020-10-16 12:34:54,319 INFO L226 Difference]: Without dead ends: 153 [2020-10-16 12:34:54,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1369 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1383, Invalid=3873, Unknown=0, NotChecked=0, Total=5256 [2020-10-16 12:34:54,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-16 12:34:54,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 100. [2020-10-16 12:34:54,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-16 12:34:54,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 254 transitions. [2020-10-16 12:34:54,322 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 254 transitions. Word has length 33 [2020-10-16 12:34:54,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:34:54,322 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 254 transitions. [2020-10-16 12:34:54,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-16 12:34:54,322 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 254 transitions. [2020-10-16 12:34:54,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-16 12:34:54,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:34:54,322 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:34:54,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,163 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:54,523 INFO L429 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:34:54,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:34:54,524 INFO L82 PathProgramCache]: Analyzing trace with hash -15159204, now seen corresponding path program 164 times [2020-10-16 12:34:54,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:34:54,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80778019] [2020-10-16 12:34:54,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:34:54,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:34:54,992 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:54,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80778019] [2020-10-16 12:34:54,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015446791] [2020-10-16 12:34:54,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:55,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:34:55,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:34:55,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-16 12:34:55,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:34:55,071 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:55,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:34:55,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-10-16 12:34:55,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [765784613] [2020-10-16 12:34:55,072 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:34:55,074 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:34:55,082 INFO L258 McrAutomatonBuilder]: Finished intersection with 39 states and 43 transitions. [2020-10-16 12:34:55,083 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:34:55,091 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:34:55,092 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:34:55,131 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [67511#(and (<= ~j~0 20) (< ~i~0 46))] [2020-10-16 12:34:55,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-16 12:34:55,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:34:55,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-16 12:34:55,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=728, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:34:55,132 INFO L87 Difference]: Start difference. First operand 100 states and 254 transitions. Second operand 30 states. [2020-10-16 12:34:57,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:34:57,114 INFO L93 Difference]: Finished difference Result 157 states and 370 transitions. [2020-10-16 12:34:57,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-16 12:34:57,115 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 33 [2020-10-16 12:34:57,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:34:57,116 INFO L225 Difference]: With dead ends: 157 [2020-10-16 12:34:57,116 INFO L226 Difference]: Without dead ends: 151 [2020-10-16 12:34:57,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1489 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1502, Invalid=4048, Unknown=0, NotChecked=0, Total=5550 [2020-10-16 12:34:57,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-16 12:34:57,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 102. [2020-10-16 12:34:57,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-16 12:34:57,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 260 transitions. [2020-10-16 12:34:57,119 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 260 transitions. Word has length 33 [2020-10-16 12:34:57,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:34:57,119 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 260 transitions. [2020-10-16 12:34:57,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-16 12:34:57,119 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 260 transitions. [2020-10-16 12:34:57,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-16 12:34:57,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:34:57,120 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:34:57,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable165 [2020-10-16 12:34:57,320 INFO L429 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:34:57,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:34:57,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1437044290, now seen corresponding path program 165 times [2020-10-16 12:34:57,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:34:57,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196956054] [2020-10-16 12:34:57,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:34:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:34:57,809 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:57,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196956054] [2020-10-16 12:34:57,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811817524] [2020-10-16 12:34:57,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:57,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-10-16 12:34:57,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:34:57,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-16 12:34:57,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:34:57,918 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:57,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:34:57,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-10-16 12:34:57,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1239058831] [2020-10-16 12:34:57,919 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:34:57,921 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:34:57,929 INFO L258 McrAutomatonBuilder]: Finished intersection with 39 states and 43 transitions. [2020-10-16 12:34:57,929 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:34:57,932 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:34:57,932 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:34:57,980 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [68088#(and (<= ~j~0 22) (< ~i~0 46))] [2020-10-16 12:34:57,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-16 12:34:57,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:34:57,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-16 12:34:57,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=719, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:34:57,981 INFO L87 Difference]: Start difference. First operand 102 states and 260 transitions. Second operand 30 states. Received shutdown request... [2020-10-16 12:34:59,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-16 12:34:59,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2020-10-16 12:34:59,619 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-16 12:34:59,625 WARN L235 ceAbstractionStarter]: Timeout [2020-10-16 12:34:59,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:34:59 BasicIcfg [2020-10-16 12:34:59,626 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:34:59,628 INFO L168 Benchmark]: Toolchain (without parser) took 257198.38 ms. Allocated memory was 141.0 MB in the beginning and 317.2 MB in the end (delta: 176.2 MB). Free memory was 102.4 MB in the beginning and 253.1 MB in the end (delta: -150.7 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-10-16 12:34:59,628 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 141.0 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 12:34:59,629 INFO L168 Benchmark]: CACSL2BoogieTranslator took 752.22 ms. Allocated memory was 141.0 MB in the beginning and 206.0 MB in the end (delta: 65.0 MB). Free memory was 102.0 MB in the beginning and 165.8 MB in the end (delta: -63.8 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-10-16 12:34:59,629 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.18 ms. Allocated memory is still 206.0 MB. Free memory was 165.8 MB in the beginning and 163.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-16 12:34:59,630 INFO L168 Benchmark]: Boogie Preprocessor took 24.88 ms. Allocated memory is still 206.0 MB. Free memory was 163.8 MB in the beginning and 162.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-16 12:34:59,630 INFO L168 Benchmark]: RCFGBuilder took 449.84 ms. Allocated memory is still 206.0 MB. Free memory was 162.4 MB in the beginning and 141.7 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-10-16 12:34:59,630 INFO L168 Benchmark]: TraceAbstraction took 255919.51 ms. Allocated memory was 206.0 MB in the beginning and 317.2 MB in the end (delta: 111.1 MB). Free memory was 141.7 MB in the beginning and 253.1 MB in the end (delta: -111.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 12:34:59,632 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 141.0 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 752.22 ms. Allocated memory was 141.0 MB in the beginning and 206.0 MB in the end (delta: 65.0 MB). Free memory was 102.0 MB in the beginning and 165.8 MB in the end (delta: -63.8 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.18 ms. Allocated memory is still 206.0 MB. Free memory was 165.8 MB in the beginning and 163.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.88 ms. Allocated memory is still 206.0 MB. Free memory was 163.8 MB in the beginning and 162.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 449.84 ms. Allocated memory is still 206.0 MB. Free memory was 162.4 MB in the beginning and 141.7 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 255919.51 ms. Allocated memory was 206.0 MB in the beginning and 317.2 MB in the end (delta: 111.1 MB). Free memory was 141.7 MB in the beginning and 253.1 MB in the end (delta: -111.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 488 VarBasedMoverChecksPositive, 13 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 19 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 57 PlacesBefore, 20 PlacesAfterwards, 55 TransitionsBefore, 15 TransitionsAfterwards, 924 CoEnabledTransitionPairs, 5 FixpointIterations, 12 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 45 TotalNumberOfCompositions, 911 MoverChecksTotal - TimeoutResultAtElement [Line: 703]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 703). Cancelled while BasicCegarLoop was constructing difference of abstraction (102states) and FLOYD_HOARE automaton (currently 37 states, 30 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 65 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 255.8s, OverallIterations: 167, TraceHistogramMax: 13, AutomataDifference: 154.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 2364 SDtfs, 10865 SDslu, 21025 SDs, 0 SdLazy, 23364 SolverSat, 14794 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12622 GetRequests, 4597 SyntacticMatches, 200 SemanticMatches, 7824 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103310 ImplicationChecksByTransitivity, 164.5s 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, 166 MinimizatonAttempts, 5236 StatesRemovedByMinimization, 165 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.3s SsaConstructionTime, 4.3s SatisfiabilityAnalysisTime, 45.9s InterpolantComputationTime, 8186 NumberOfCodeBlocks, 8186 NumberOfCodeBlocksAsserted, 1018 NumberOfCheckSat, 7855 ConstructedInterpolants, 0 QuantifiedInterpolants, 930351 SizeOfPredicates, 2769 NumberOfNonLiveVariables, 24341 ConjunctsInSsa, 3425 ConjunctsInUnsatCore, 331 InterpolantComputations, 3 PerfectInterpolantSequences, 0/23472 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