/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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread/triangular-longer-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 23:36:38,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 23:36:38,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 23:36:38,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 23:36:38,358 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 23:36:38,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 23:36:38,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 23:36:38,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 23:36:38,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 23:36:38,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 23:36:38,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 23:36:38,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 23:36:38,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 23:36:38,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 23:36:38,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 23:36:38,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 23:36:38,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 23:36:38,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 23:36:38,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 23:36:38,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 23:36:38,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 23:36:38,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 23:36:38,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 23:36:38,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 23:36:38,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-18 23:36:38,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 23:36:38,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 23:36:38,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 23:36:38,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 23:36:38,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 23:36:38,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 23:36:38,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 23:36:38,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 23:36:38,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 23:36:38,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 23:36:38,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 23:36:38,400 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2019-12-18 23:36:38,424 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 23:36:38,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 23:36:38,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 23:36:38,428 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 23:36:38,428 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 23:36:38,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 23:36:38,429 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 23:36:38,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 23:36:38,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 23:36:38,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 23:36:38,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 23:36:38,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 23:36:38,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 23:36:38,431 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 23:36:38,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 23:36:38,431 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 23:36:38,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 23:36:38,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 23:36:38,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 23:36:38,432 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 23:36:38,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 23:36:38,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 23:36:38,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 23:36:38,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 23:36:38,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 23:36:38,434 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 23:36:38,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 23:36:38,434 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2019-12-18 23:36:38,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 23:36:38,435 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 23:36:38,683 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 23:36:38,697 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 23:36:38,702 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 23:36:38,703 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 23:36:38,704 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 23:36:38,705 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-1.i [2019-12-18 23:36:38,777 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c690caa1/e0f7944b596b48908b6349877218fab6/FLAG5cf1c2dc0 [2019-12-18 23:36:39,304 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 23:36:39,305 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i [2019-12-18 23:36:39,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c690caa1/e0f7944b596b48908b6349877218fab6/FLAG5cf1c2dc0 [2019-12-18 23:36:39,595 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c690caa1/e0f7944b596b48908b6349877218fab6 [2019-12-18 23:36:39,606 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 23:36:39,608 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 23:36:39,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 23:36:39,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 23:36:39,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 23:36:39,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:36:39" (1/1) ... [2019-12-18 23:36:39,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f7100ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:36:39, skipping insertion in model container [2019-12-18 23:36:39,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:36:39" (1/1) ... [2019-12-18 23:36:39,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 23:36:39,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 23:36:40,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 23:36:40,227 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 23:36:40,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 23:36:40,342 INFO L208 MainTranslator]: Completed translation [2019-12-18 23:36:40,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:36:40 WrapperNode [2019-12-18 23:36:40,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 23:36:40,343 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 23:36:40,343 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 23:36:40,343 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 23:36:40,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:36:40" (1/1) ... [2019-12-18 23:36:40,368 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:36:40" (1/1) ... [2019-12-18 23:36:40,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 23:36:40,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 23:36:40,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 23:36:40,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 23:36:40,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:36:40" (1/1) ... [2019-12-18 23:36:40,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:36:40" (1/1) ... [2019-12-18 23:36:40,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:36:40" (1/1) ... [2019-12-18 23:36:40,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:36:40" (1/1) ... [2019-12-18 23:36:40,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:36:40" (1/1) ... [2019-12-18 23:36:40,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:36:40" (1/1) ... [2019-12-18 23:36:40,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:36:40" (1/1) ... [2019-12-18 23:36:40,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 23:36:40,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 23:36:40,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 23:36:40,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 23:36:40,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:36:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 23:36:40,482 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2019-12-18 23:36:40,482 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2019-12-18 23:36:40,483 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2019-12-18 23:36:40,483 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2019-12-18 23:36:40,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 23:36:40,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-18 23:36:40,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 23:36:40,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 23:36:40,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-18 23:36:40,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 23:36:40,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 23:36:40,486 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-18 23:36:40,819 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 23:36:40,819 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-18 23:36:40,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:36:40 BoogieIcfgContainer [2019-12-18 23:36:40,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 23:36:40,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 23:36:40,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 23:36:40,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 23:36:40,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 11:36:39" (1/3) ... [2019-12-18 23:36:40,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@376668b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:36:40, skipping insertion in model container [2019-12-18 23:36:40,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:36:40" (2/3) ... [2019-12-18 23:36:40,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@376668b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:36:40, skipping insertion in model container [2019-12-18 23:36:40,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:36:40" (3/3) ... [2019-12-18 23:36:40,830 INFO L109 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2019-12-18 23:36:40,840 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 23:36:40,840 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 23:36:40,845 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-18 23:36:40,846 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 23:36:40,873 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,874 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,874 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,874 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,875 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,875 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,876 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,876 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,876 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,876 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,877 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,877 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,877 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,878 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,878 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,878 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,879 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,879 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,879 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,879 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,880 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,880 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,880 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,881 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,881 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,881 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,881 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,882 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,886 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,886 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,886 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,887 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,887 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,887 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,905 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,905 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,906 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,906 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,906 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,906 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:36:40,928 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-18 23:36:40,949 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 23:36:40,949 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 23:36:40,950 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 23:36:40,950 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 23:36:40,950 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 23:36:40,950 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 23:36:40,950 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 23:36:40,951 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 23:36:40,961 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 53 places, 51 transitions [2019-12-18 23:36:41,038 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1013 states. [2019-12-18 23:36:41,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states. [2019-12-18 23:36:41,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-18 23:36:41,054 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:36:41,056 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:36:41,056 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:36:41,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:36:41,063 INFO L82 PathProgramCache]: Analyzing trace with hash -910010, now seen corresponding path program 1 times [2019-12-18 23:36:41,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:36:41,073 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663022416] [2019-12-18 23:36:41,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:36:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:36:41,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:41,457 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663022416] [2019-12-18 23:36:41,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:36:41,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-18 23:36:41,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296379032] [2019-12-18 23:36:41,465 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 23:36:41,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:36:41,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 23:36:41,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 23:36:41,483 INFO L87 Difference]: Start difference. First operand 1013 states. Second operand 5 states. [2019-12-18 23:36:41,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:36:41,674 INFO L93 Difference]: Finished difference Result 1778 states and 5126 transitions. [2019-12-18 23:36:41,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-18 23:36:41,676 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-12-18 23:36:41,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:36:41,696 INFO L225 Difference]: With dead ends: 1778 [2019-12-18 23:36:41,697 INFO L226 Difference]: Without dead ends: 500 [2019-12-18 23:36:41,698 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-18 23:36:41,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2019-12-18 23:36:41,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 388. [2019-12-18 23:36:41,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2019-12-18 23:36:41,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 993 transitions. [2019-12-18 23:36:41,781 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 993 transitions. Word has length 20 [2019-12-18 23:36:41,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:36:41,782 INFO L462 AbstractCegarLoop]: Abstraction has 388 states and 993 transitions. [2019-12-18 23:36:41,782 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 23:36:41,782 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 993 transitions. [2019-12-18 23:36:41,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-18 23:36:41,784 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:36:41,784 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:36:41,784 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:36:41,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:36:41,785 INFO L82 PathProgramCache]: Analyzing trace with hash 723642448, now seen corresponding path program 1 times [2019-12-18 23:36:41,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:36:41,786 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230648186] [2019-12-18 23:36:41,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:36:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:36:41,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:41,928 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230648186] [2019-12-18 23:36:41,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:36:41,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-18 23:36:41,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165006975] [2019-12-18 23:36:41,930 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 23:36:41,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:36:41,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 23:36:41,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-18 23:36:41,931 INFO L87 Difference]: Start difference. First operand 388 states and 993 transitions. Second operand 5 states. [2019-12-18 23:36:42,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:36:42,036 INFO L93 Difference]: Finished difference Result 563 states and 1392 transitions. [2019-12-18 23:36:42,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-18 23:36:42,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-12-18 23:36:42,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:36:42,043 INFO L225 Difference]: With dead ends: 563 [2019-12-18 23:36:42,043 INFO L226 Difference]: Without dead ends: 354 [2019-12-18 23:36:42,044 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-12-18 23:36:42,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2019-12-18 23:36:42,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2019-12-18 23:36:42,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2019-12-18 23:36:42,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 883 transitions. [2019-12-18 23:36:42,096 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 883 transitions. Word has length 23 [2019-12-18 23:36:42,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:36:42,097 INFO L462 AbstractCegarLoop]: Abstraction has 354 states and 883 transitions. [2019-12-18 23:36:42,097 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 23:36:42,097 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 883 transitions. [2019-12-18 23:36:42,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-18 23:36:42,099 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:36:42,100 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:36:42,100 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:36:42,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:36:42,100 INFO L82 PathProgramCache]: Analyzing trace with hash -660572760, now seen corresponding path program 1 times [2019-12-18 23:36:42,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:36:42,102 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737170948] [2019-12-18 23:36:42,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:36:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:36:42,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:42,210 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737170948] [2019-12-18 23:36:42,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:36:42,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-18 23:36:42,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534260556] [2019-12-18 23:36:42,211 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 23:36:42,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:36:42,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 23:36:42,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-18 23:36:42,212 INFO L87 Difference]: Start difference. First operand 354 states and 883 transitions. Second operand 5 states. [2019-12-18 23:36:42,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:36:42,282 INFO L93 Difference]: Finished difference Result 431 states and 1037 transitions. [2019-12-18 23:36:42,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-18 23:36:42,283 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-12-18 23:36:42,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:36:42,285 INFO L225 Difference]: With dead ends: 431 [2019-12-18 23:36:42,286 INFO L226 Difference]: Without dead ends: 301 [2019-12-18 23:36:42,286 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-18 23:36:42,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2019-12-18 23:36:42,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 288. [2019-12-18 23:36:42,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2019-12-18 23:36:42,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 709 transitions. [2019-12-18 23:36:42,298 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 709 transitions. Word has length 23 [2019-12-18 23:36:42,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:36:42,299 INFO L462 AbstractCegarLoop]: Abstraction has 288 states and 709 transitions. [2019-12-18 23:36:42,299 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 23:36:42,299 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 709 transitions. [2019-12-18 23:36:42,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-18 23:36:42,301 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:36:42,301 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:36:42,301 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:36:42,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:36:42,301 INFO L82 PathProgramCache]: Analyzing trace with hash -962769584, now seen corresponding path program 1 times [2019-12-18 23:36:42,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:36:42,302 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475884509] [2019-12-18 23:36:42,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:36:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:36:42,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:42,429 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475884509] [2019-12-18 23:36:42,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:36:42,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-18 23:36:42,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455162360] [2019-12-18 23:36:42,430 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-18 23:36:42,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:36:42,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-18 23:36:42,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-12-18 23:36:42,431 INFO L87 Difference]: Start difference. First operand 288 states and 709 transitions. Second operand 6 states. [2019-12-18 23:36:42,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:36:42,566 INFO L93 Difference]: Finished difference Result 448 states and 1078 transitions. [2019-12-18 23:36:42,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-18 23:36:42,567 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2019-12-18 23:36:42,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:36:42,570 INFO L225 Difference]: With dead ends: 448 [2019-12-18 23:36:42,570 INFO L226 Difference]: Without dead ends: 320 [2019-12-18 23:36:42,571 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-12-18 23:36:42,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2019-12-18 23:36:42,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2019-12-18 23:36:42,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2019-12-18 23:36:42,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 773 transitions. [2019-12-18 23:36:42,585 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 773 transitions. Word has length 26 [2019-12-18 23:36:42,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:36:42,585 INFO L462 AbstractCegarLoop]: Abstraction has 320 states and 773 transitions. [2019-12-18 23:36:42,585 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-18 23:36:42,585 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 773 transitions. [2019-12-18 23:36:42,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-18 23:36:42,591 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:36:42,591 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:36:42,591 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:36:42,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:36:42,592 INFO L82 PathProgramCache]: Analyzing trace with hash -327915495, now seen corresponding path program 1 times [2019-12-18 23:36:42,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:36:42,592 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960630140] [2019-12-18 23:36:42,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:36:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:36:42,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:42,762 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960630140] [2019-12-18 23:36:42,762 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708411613] [2019-12-18 23:36:42,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:36:42,839 INFO L264 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-18 23:36:42,849 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:36:42,939 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:42,942 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:42,950 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:42,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:42,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:36:42,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-12-18 23:36:42,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688208829] [2019-12-18 23:36:42,982 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-18 23:36:42,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:36:42,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-18 23:36:42,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-12-18 23:36:42,983 INFO L87 Difference]: Start difference. First operand 320 states and 773 transitions. Second operand 8 states. [2019-12-18 23:36:43,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:36:43,124 INFO L93 Difference]: Finished difference Result 565 states and 1361 transitions. [2019-12-18 23:36:43,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-18 23:36:43,125 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2019-12-18 23:36:43,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:36:43,129 INFO L225 Difference]: With dead ends: 565 [2019-12-18 23:36:43,130 INFO L226 Difference]: Without dead ends: 376 [2019-12-18 23:36:43,136 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2019-12-18 23:36:43,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2019-12-18 23:36:43,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 364. [2019-12-18 23:36:43,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2019-12-18 23:36:43,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 865 transitions. [2019-12-18 23:36:43,160 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 865 transitions. Word has length 30 [2019-12-18 23:36:43,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:36:43,160 INFO L462 AbstractCegarLoop]: Abstraction has 364 states and 865 transitions. [2019-12-18 23:36:43,160 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-18 23:36:43,160 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 865 transitions. [2019-12-18 23:36:43,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-18 23:36:43,162 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:36:43,162 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:36:43,367 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:43,368 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:36:43,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:36:43,369 INFO L82 PathProgramCache]: Analyzing trace with hash -243930643, now seen corresponding path program 1 times [2019-12-18 23:36:43,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:36:43,369 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763847414] [2019-12-18 23:36:43,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:36:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:36:43,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:43,503 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763847414] [2019-12-18 23:36:43,503 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358797762] [2019-12-18 23:36:43,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:43,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:36:43,571 INFO L264 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-18 23:36:43,577 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:36:43,602 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:43,604 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:43,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:43,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:36:43,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-12-18 23:36:43,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662694060] [2019-12-18 23:36:43,609 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-18 23:36:43,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:36:43,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-18 23:36:43,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-12-18 23:36:43,610 INFO L87 Difference]: Start difference. First operand 364 states and 865 transitions. Second operand 8 states. [2019-12-18 23:36:43,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:36:43,713 INFO L93 Difference]: Finished difference Result 649 states and 1529 transitions. [2019-12-18 23:36:43,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-18 23:36:43,713 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2019-12-18 23:36:43,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:36:43,717 INFO L225 Difference]: With dead ends: 649 [2019-12-18 23:36:43,717 INFO L226 Difference]: Without dead ends: 460 [2019-12-18 23:36:43,717 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-12-18 23:36:43,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2019-12-18 23:36:43,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 392. [2019-12-18 23:36:43,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2019-12-18 23:36:43,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 917 transitions. [2019-12-18 23:36:43,730 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 917 transitions. Word has length 30 [2019-12-18 23:36:43,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:36:43,731 INFO L462 AbstractCegarLoop]: Abstraction has 392 states and 917 transitions. [2019-12-18 23:36:43,731 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-18 23:36:43,731 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 917 transitions. [2019-12-18 23:36:43,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-12-18 23:36:43,732 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:36:43,732 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:36:43,935 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:43,936 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:36:43,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:36:43,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1246329683, now seen corresponding path program 1 times [2019-12-18 23:36:43,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:36:43,937 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074227313] [2019-12-18 23:36:43,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:36:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:36:44,069 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:44,069 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074227313] [2019-12-18 23:36:44,070 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660541775] [2019-12-18 23:36:44,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:36:44,151 INFO L264 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-18 23:36:44,154 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:36:44,177 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:44,179 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:44,180 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:44,186 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:44,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:36:44,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-12-18 23:36:44,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766096368] [2019-12-18 23:36:44,190 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-18 23:36:44,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:36:44,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-18 23:36:44,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-12-18 23:36:44,191 INFO L87 Difference]: Start difference. First operand 392 states and 917 transitions. Second operand 10 states. [2019-12-18 23:36:44,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:36:44,410 INFO L93 Difference]: Finished difference Result 677 states and 1585 transitions. [2019-12-18 23:36:44,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-12-18 23:36:44,411 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2019-12-18 23:36:44,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:36:44,414 INFO L225 Difference]: With dead ends: 677 [2019-12-18 23:36:44,414 INFO L226 Difference]: Without dead ends: 440 [2019-12-18 23:36:44,415 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2019-12-18 23:36:44,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2019-12-18 23:36:44,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 412. [2019-12-18 23:36:44,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2019-12-18 23:36:44,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 961 transitions. [2019-12-18 23:36:44,428 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 961 transitions. Word has length 38 [2019-12-18 23:36:44,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:36:44,429 INFO L462 AbstractCegarLoop]: Abstraction has 412 states and 961 transitions. [2019-12-18 23:36:44,429 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-18 23:36:44,431 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 961 transitions. [2019-12-18 23:36:44,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-12-18 23:36:44,432 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:36:44,432 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:36:44,635 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:44,635 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:36:44,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:36:44,636 INFO L82 PathProgramCache]: Analyzing trace with hash -40518361, now seen corresponding path program 2 times [2019-12-18 23:36:44,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:36:44,636 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876097841] [2019-12-18 23:36:44,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:36:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:36:44,759 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:44,759 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876097841] [2019-12-18 23:36:44,760 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702834921] [2019-12-18 23:36:44,760 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:44,819 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-18 23:36:44,819 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 23:36:44,820 INFO L264 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-18 23:36:44,832 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:36:44,859 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:44,860 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:44,862 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:44,866 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:44,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:36:44,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-12-18 23:36:44,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639583703] [2019-12-18 23:36:44,869 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-18 23:36:44,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:36:44,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-18 23:36:44,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-12-18 23:36:44,870 INFO L87 Difference]: Start difference. First operand 412 states and 961 transitions. Second operand 10 states. [2019-12-18 23:36:45,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:36:45,092 INFO L93 Difference]: Finished difference Result 767 states and 1814 transitions. [2019-12-18 23:36:45,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-18 23:36:45,093 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2019-12-18 23:36:45,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:36:45,096 INFO L225 Difference]: With dead ends: 767 [2019-12-18 23:36:45,096 INFO L226 Difference]: Without dead ends: 448 [2019-12-18 23:36:45,096 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2019-12-18 23:36:45,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2019-12-18 23:36:45,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 346. [2019-12-18 23:36:45,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2019-12-18 23:36:45,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 825 transitions. [2019-12-18 23:36:45,107 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 825 transitions. Word has length 38 [2019-12-18 23:36:45,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:36:45,108 INFO L462 AbstractCegarLoop]: Abstraction has 346 states and 825 transitions. [2019-12-18 23:36:45,108 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-18 23:36:45,108 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 825 transitions. [2019-12-18 23:36:45,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-12-18 23:36:45,110 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:36:45,110 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:36:45,312 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:45,313 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:36:45,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:36:45,313 INFO L82 PathProgramCache]: Analyzing trace with hash 57013188, now seen corresponding path program 3 times [2019-12-18 23:36:45,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:36:45,314 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554576402] [2019-12-18 23:36:45,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:36:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:36:45,426 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:45,426 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554576402] [2019-12-18 23:36:45,426 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913879582] [2019-12-18 23:36:45,427 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:45,492 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-12-18 23:36:45,494 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 23:36:45,495 INFO L264 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-18 23:36:45,497 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:36:45,540 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:45,541 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:45,542 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:45,546 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:45,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:36:45,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-12-18 23:36:45,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730207139] [2019-12-18 23:36:45,547 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-18 23:36:45,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:36:45,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-18 23:36:45,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-12-18 23:36:45,548 INFO L87 Difference]: Start difference. First operand 346 states and 825 transitions. Second operand 11 states. [2019-12-18 23:36:45,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:36:45,741 INFO L93 Difference]: Finished difference Result 693 states and 1617 transitions. [2019-12-18 23:36:45,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-18 23:36:45,741 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2019-12-18 23:36:45,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:36:45,744 INFO L225 Difference]: With dead ends: 693 [2019-12-18 23:36:45,745 INFO L226 Difference]: Without dead ends: 504 [2019-12-18 23:36:45,745 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2019-12-18 23:36:45,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2019-12-18 23:36:45,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 476. [2019-12-18 23:36:45,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2019-12-18 23:36:45,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 1089 transitions. [2019-12-18 23:36:45,759 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 1089 transitions. Word has length 42 [2019-12-18 23:36:45,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:36:45,759 INFO L462 AbstractCegarLoop]: Abstraction has 476 states and 1089 transitions. [2019-12-18 23:36:45,759 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-18 23:36:45,759 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 1089 transitions. [2019-12-18 23:36:45,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-12-18 23:36:45,760 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:36:45,760 INFO L411 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:36:45,963 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:45,968 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:36:45,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:36:45,968 INFO L82 PathProgramCache]: Analyzing trace with hash 2041820769, now seen corresponding path program 4 times [2019-12-18 23:36:45,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:36:45,969 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439767951] [2019-12-18 23:36:45,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:36:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:36:46,098 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:46,098 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439767951] [2019-12-18 23:36:46,098 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326616613] [2019-12-18 23:36:46,099 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2019-12-18 23:36:46,162 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-18 23:36:46,163 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 23:36:46,163 INFO L264 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-18 23:36:46,168 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:36:46,213 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:46,214 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:46,220 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:46,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:36:46,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-12-18 23:36:46,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593353633] [2019-12-18 23:36:46,224 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-18 23:36:46,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:36:46,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-18 23:36:46,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-12-18 23:36:46,224 INFO L87 Difference]: Start difference. First operand 476 states and 1089 transitions. Second operand 12 states. [2019-12-18 23:36:46,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:36:46,409 INFO L93 Difference]: Finished difference Result 733 states and 1697 transitions. [2019-12-18 23:36:46,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-18 23:36:46,409 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2019-12-18 23:36:46,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:36:46,412 INFO L225 Difference]: With dead ends: 733 [2019-12-18 23:36:46,412 INFO L226 Difference]: Without dead ends: 496 [2019-12-18 23:36:46,413 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2019-12-18 23:36:46,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2019-12-18 23:36:46,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 378. [2019-12-18 23:36:46,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2019-12-18 23:36:46,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 889 transitions. [2019-12-18 23:36:46,424 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 889 transitions. Word has length 46 [2019-12-18 23:36:46,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:36:46,424 INFO L462 AbstractCegarLoop]: Abstraction has 378 states and 889 transitions. [2019-12-18 23:36:46,424 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-18 23:36:46,425 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 889 transitions. [2019-12-18 23:36:46,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-12-18 23:36:46,425 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:36:46,426 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:36:46,629 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:46,630 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:36:46,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:36:46,630 INFO L82 PathProgramCache]: Analyzing trace with hash 216399870, now seen corresponding path program 5 times [2019-12-18 23:36:46,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:36:46,631 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006271341] [2019-12-18 23:36:46,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:36:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:36:46,780 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:46,780 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006271341] [2019-12-18 23:36:46,781 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093386622] [2019-12-18 23:36:46,781 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:46,842 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-12-18 23:36:46,843 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 23:36:46,844 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjunts are in the unsatisfiable core [2019-12-18 23:36:46,846 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:36:46,897 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:46,899 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:46,905 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:46,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:36:46,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-12-18 23:36:46,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715398733] [2019-12-18 23:36:46,907 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-18 23:36:46,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:36:46,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-18 23:36:46,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-12-18 23:36:46,910 INFO L87 Difference]: Start difference. First operand 378 states and 889 transitions. Second operand 13 states. [2019-12-18 23:36:47,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:36:47,120 INFO L93 Difference]: Finished difference Result 757 states and 1745 transitions. [2019-12-18 23:36:47,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-12-18 23:36:47,121 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 50 [2019-12-18 23:36:47,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:36:47,124 INFO L225 Difference]: With dead ends: 757 [2019-12-18 23:36:47,124 INFO L226 Difference]: Without dead ends: 568 [2019-12-18 23:36:47,125 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2019-12-18 23:36:47,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2019-12-18 23:36:47,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 540. [2019-12-18 23:36:47,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2019-12-18 23:36:47,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 1217 transitions. [2019-12-18 23:36:47,138 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 1217 transitions. Word has length 50 [2019-12-18 23:36:47,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:36:47,138 INFO L462 AbstractCegarLoop]: Abstraction has 540 states and 1217 transitions. [2019-12-18 23:36:47,138 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-18 23:36:47,139 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 1217 transitions. [2019-12-18 23:36:47,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-12-18 23:36:47,139 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:36:47,140 INFO L411 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:36:47,343 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:47,343 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:36:47,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:36:47,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1337338469, now seen corresponding path program 6 times [2019-12-18 23:36:47,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:36:47,344 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784678370] [2019-12-18 23:36:47,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:36:47,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:36:47,528 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:47,528 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784678370] [2019-12-18 23:36:47,529 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229743915] [2019-12-18 23:36:47,529 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:47,600 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-12-18 23:36:47,600 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 23:36:47,601 INFO L264 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 16 conjunts are in the unsatisfiable core [2019-12-18 23:36:47,603 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:36:47,625 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:47,626 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:47,627 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:47,631 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:47,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:36:47,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2019-12-18 23:36:47,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783850312] [2019-12-18 23:36:47,632 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-12-18 23:36:47,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:36:47,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-12-18 23:36:47,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2019-12-18 23:36:47,633 INFO L87 Difference]: Start difference. First operand 540 states and 1217 transitions. Second operand 14 states. [2019-12-18 23:36:47,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:36:47,897 INFO L93 Difference]: Finished difference Result 797 states and 1825 transitions. [2019-12-18 23:36:47,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-12-18 23:36:47,898 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2019-12-18 23:36:47,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:36:47,901 INFO L225 Difference]: With dead ends: 797 [2019-12-18 23:36:47,902 INFO L226 Difference]: Without dead ends: 608 [2019-12-18 23:36:47,902 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2019-12-18 23:36:47,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2019-12-18 23:36:47,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 434. [2019-12-18 23:36:47,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2019-12-18 23:36:47,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1001 transitions. [2019-12-18 23:36:47,914 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1001 transitions. Word has length 54 [2019-12-18 23:36:47,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:36:47,914 INFO L462 AbstractCegarLoop]: Abstraction has 434 states and 1001 transitions. [2019-12-18 23:36:47,914 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-12-18 23:36:47,914 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1001 transitions. [2019-12-18 23:36:47,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-12-18 23:36:47,915 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:36:47,915 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:36:48,127 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:48,128 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:36:48,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:36:48,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1662726712, now seen corresponding path program 7 times [2019-12-18 23:36:48,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:36:48,128 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831449699] [2019-12-18 23:36:48,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:36:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:36:48,291 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:48,291 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831449699] [2019-12-18 23:36:48,291 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979954281] [2019-12-18 23:36:48,292 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:36:48,344 INFO L264 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 16 conjunts are in the unsatisfiable core [2019-12-18 23:36:48,346 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:36:48,378 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:48,379 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:48,388 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:48,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:36:48,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-12-18 23:36:48,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148096270] [2019-12-18 23:36:48,390 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-12-18 23:36:48,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:36:48,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-12-18 23:36:48,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2019-12-18 23:36:48,391 INFO L87 Difference]: Start difference. First operand 434 states and 1001 transitions. Second operand 15 states. [2019-12-18 23:36:48,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:36:48,708 INFO L93 Difference]: Finished difference Result 967 states and 2214 transitions. [2019-12-18 23:36:48,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-12-18 23:36:48,708 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 58 [2019-12-18 23:36:48,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:36:48,714 INFO L225 Difference]: With dead ends: 967 [2019-12-18 23:36:48,715 INFO L226 Difference]: Without dead ends: 672 [2019-12-18 23:36:48,715 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=217, Invalid=539, Unknown=0, NotChecked=0, Total=756 [2019-12-18 23:36:48,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2019-12-18 23:36:48,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 453. [2019-12-18 23:36:48,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2019-12-18 23:36:48,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 1039 transitions. [2019-12-18 23:36:48,727 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 1039 transitions. Word has length 58 [2019-12-18 23:36:48,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:36:48,728 INFO L462 AbstractCegarLoop]: Abstraction has 453 states and 1039 transitions. [2019-12-18 23:36:48,728 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-12-18 23:36:48,728 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 1039 transitions. [2019-12-18 23:36:48,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-12-18 23:36:48,729 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:36:48,729 INFO L411 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:36:48,931 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:48,932 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:36:48,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:36:48,933 INFO L82 PathProgramCache]: Analyzing trace with hash -774759723, now seen corresponding path program 8 times [2019-12-18 23:36:48,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:36:48,934 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337901642] [2019-12-18 23:36:48,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:36:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:36:49,075 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:49,076 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337901642] [2019-12-18 23:36:49,076 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617486911] [2019-12-18 23:36:49,076 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:49,136 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-18 23:36:49,136 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 23:36:49,137 INFO L264 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 18 conjunts are in the unsatisfiable core [2019-12-18 23:36:49,139 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:36:49,183 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:49,184 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:49,184 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:49,190 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:49,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:36:49,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2019-12-18 23:36:49,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207455917] [2019-12-18 23:36:49,191 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-12-18 23:36:49,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:36:49,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-12-18 23:36:49,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2019-12-18 23:36:49,192 INFO L87 Difference]: Start difference. First operand 453 states and 1039 transitions. Second operand 16 states. [2019-12-18 23:36:49,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:36:49,558 INFO L93 Difference]: Finished difference Result 983 states and 2246 transitions. [2019-12-18 23:36:49,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-12-18 23:36:49,559 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 62 [2019-12-18 23:36:49,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:36:49,563 INFO L225 Difference]: With dead ends: 983 [2019-12-18 23:36:49,563 INFO L226 Difference]: Without dead ends: 688 [2019-12-18 23:36:49,563 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=230, Invalid=640, Unknown=0, NotChecked=0, Total=870 [2019-12-18 23:36:49,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2019-12-18 23:36:49,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 466. [2019-12-18 23:36:49,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2019-12-18 23:36:49,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 1065 transitions. [2019-12-18 23:36:49,576 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 1065 transitions. Word has length 62 [2019-12-18 23:36:49,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:36:49,576 INFO L462 AbstractCegarLoop]: Abstraction has 466 states and 1065 transitions. [2019-12-18 23:36:49,576 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-12-18 23:36:49,576 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 1065 transitions. [2019-12-18 23:36:49,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-12-18 23:36:49,577 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:36:49,578 INFO L411 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:36:49,789 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:49,790 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:36:49,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:36:49,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1451259278, now seen corresponding path program 9 times [2019-12-18 23:36:49,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:36:49,791 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909140746] [2019-12-18 23:36:49,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:36:49,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:36:49,964 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:49,964 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909140746] [2019-12-18 23:36:49,964 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516154582] [2019-12-18 23:36:49,964 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:50,025 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-12-18 23:36:50,025 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 23:36:50,026 INFO L264 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 18 conjunts are in the unsatisfiable core [2019-12-18 23:36:50,027 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:36:50,054 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:50,056 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:50,061 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:50,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:36:50,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2019-12-18 23:36:50,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345448388] [2019-12-18 23:36:50,062 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-12-18 23:36:50,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:36:50,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-12-18 23:36:50,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2019-12-18 23:36:50,063 INFO L87 Difference]: Start difference. First operand 466 states and 1065 transitions. Second operand 17 states. [2019-12-18 23:36:50,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:36:50,420 INFO L93 Difference]: Finished difference Result 1031 states and 2342 transitions. [2019-12-18 23:36:50,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-12-18 23:36:50,421 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 66 [2019-12-18 23:36:50,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:36:50,425 INFO L225 Difference]: With dead ends: 1031 [2019-12-18 23:36:50,425 INFO L226 Difference]: Without dead ends: 736 [2019-12-18 23:36:50,426 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=285, Invalid=707, Unknown=0, NotChecked=0, Total=992 [2019-12-18 23:36:50,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2019-12-18 23:36:50,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 485. [2019-12-18 23:36:50,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2019-12-18 23:36:50,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 1103 transitions. [2019-12-18 23:36:50,438 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 1103 transitions. Word has length 66 [2019-12-18 23:36:50,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:36:50,438 INFO L462 AbstractCegarLoop]: Abstraction has 485 states and 1103 transitions. [2019-12-18 23:36:50,438 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-12-18 23:36:50,439 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 1103 transitions. [2019-12-18 23:36:50,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-12-18 23:36:50,439 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:36:50,440 INFO L411 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:36:50,643 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:50,643 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:36:50,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:36:50,643 INFO L82 PathProgramCache]: Analyzing trace with hash -188316145, now seen corresponding path program 10 times [2019-12-18 23:36:50,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:36:50,644 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691349520] [2019-12-18 23:36:50,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:36:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:36:50,833 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:50,833 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691349520] [2019-12-18 23:36:50,833 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039520576] [2019-12-18 23:36:50,833 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2019-12-18 23:36:50,883 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-18 23:36:50,883 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 23:36:50,884 INFO L264 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 19 conjunts are in the unsatisfiable core [2019-12-18 23:36:50,885 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:36:50,916 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:50,918 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:50,922 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:50,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:36:50,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2019-12-18 23:36:50,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158019918] [2019-12-18 23:36:50,923 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-12-18 23:36:50,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:36:50,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-12-18 23:36:50,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2019-12-18 23:36:50,924 INFO L87 Difference]: Start difference. First operand 485 states and 1103 transitions. Second operand 18 states. [2019-12-18 23:36:51,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:36:51,314 INFO L93 Difference]: Finished difference Result 1047 states and 2374 transitions. [2019-12-18 23:36:51,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-12-18 23:36:51,314 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 70 [2019-12-18 23:36:51,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:36:51,318 INFO L225 Difference]: With dead ends: 1047 [2019-12-18 23:36:51,318 INFO L226 Difference]: Without dead ends: 752 [2019-12-18 23:36:51,320 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=296, Invalid=760, Unknown=0, NotChecked=0, Total=1056 [2019-12-18 23:36:51,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2019-12-18 23:36:51,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 498. [2019-12-18 23:36:51,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2019-12-18 23:36:51,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1129 transitions. [2019-12-18 23:36:51,338 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1129 transitions. Word has length 70 [2019-12-18 23:36:51,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:36:51,338 INFO L462 AbstractCegarLoop]: Abstraction has 498 states and 1129 transitions. [2019-12-18 23:36:51,338 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-12-18 23:36:51,338 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1129 transitions. [2019-12-18 23:36:51,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-12-18 23:36:51,339 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:36:51,339 INFO L411 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:36:51,543 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:51,543 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:36:51,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:36:51,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1770850476, now seen corresponding path program 11 times [2019-12-18 23:36:51,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:36:51,544 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223839882] [2019-12-18 23:36:51,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:36:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:36:51,737 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:51,738 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223839882] [2019-12-18 23:36:51,738 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957184638] [2019-12-18 23:36:51,738 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:51,826 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-12-18 23:36:51,826 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 23:36:51,827 INFO L264 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 20 conjunts are in the unsatisfiable core [2019-12-18 23:36:51,829 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:36:51,864 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:51,868 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:51,878 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:51,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:36:51,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2019-12-18 23:36:51,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257375619] [2019-12-18 23:36:51,880 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-12-18 23:36:51,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:36:51,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-12-18 23:36:51,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-12-18 23:36:51,881 INFO L87 Difference]: Start difference. First operand 498 states and 1129 transitions. Second operand 19 states. [2019-12-18 23:36:52,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:36:52,387 INFO L93 Difference]: Finished difference Result 1079 states and 2438 transitions. [2019-12-18 23:36:52,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-12-18 23:36:52,388 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 74 [2019-12-18 23:36:52,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:36:52,391 INFO L225 Difference]: With dead ends: 1079 [2019-12-18 23:36:52,391 INFO L226 Difference]: Without dead ends: 760 [2019-12-18 23:36:52,391 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=363, Invalid=897, Unknown=0, NotChecked=0, Total=1260 [2019-12-18 23:36:52,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2019-12-18 23:36:52,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 732. [2019-12-18 23:36:52,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2019-12-18 23:36:52,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1601 transitions. [2019-12-18 23:36:52,406 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1601 transitions. Word has length 74 [2019-12-18 23:36:52,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:36:52,406 INFO L462 AbstractCegarLoop]: Abstraction has 732 states and 1601 transitions. [2019-12-18 23:36:52,406 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-12-18 23:36:52,406 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1601 transitions. [2019-12-18 23:36:52,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-12-18 23:36:52,408 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:36:52,408 INFO L411 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:36:52,610 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:52,611 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:36:52,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:36:52,612 INFO L82 PathProgramCache]: Analyzing trace with hash 362878793, now seen corresponding path program 12 times [2019-12-18 23:36:52,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:36:52,612 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135756981] [2019-12-18 23:36:52,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:36:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:36:52,835 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:52,836 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135756981] [2019-12-18 23:36:52,839 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837711869] [2019-12-18 23:36:52,839 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:52,915 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2019-12-18 23:36:52,915 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 23:36:52,916 INFO L264 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 22 conjunts are in the unsatisfiable core [2019-12-18 23:36:52,917 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:36:52,946 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:52,947 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:52,948 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:52,956 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:52,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:36:52,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2019-12-18 23:36:52,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995621314] [2019-12-18 23:36:52,958 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-12-18 23:36:52,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:36:52,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-12-18 23:36:52,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2019-12-18 23:36:52,961 INFO L87 Difference]: Start difference. First operand 732 states and 1601 transitions. Second operand 20 states. [2019-12-18 23:36:53,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:36:53,418 INFO L93 Difference]: Finished difference Result 1115 states and 2510 transitions. [2019-12-18 23:36:53,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-12-18 23:36:53,420 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 78 [2019-12-18 23:36:53,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:36:53,423 INFO L225 Difference]: With dead ends: 1115 [2019-12-18 23:36:53,423 INFO L226 Difference]: Without dead ends: 820 [2019-12-18 23:36:53,424 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=371, Invalid=1035, Unknown=0, NotChecked=0, Total=1406 [2019-12-18 23:36:53,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2019-12-18 23:36:53,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 764. [2019-12-18 23:36:53,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 764 states. [2019-12-18 23:36:53,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1665 transitions. [2019-12-18 23:36:53,438 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1665 transitions. Word has length 78 [2019-12-18 23:36:53,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:36:53,439 INFO L462 AbstractCegarLoop]: Abstraction has 764 states and 1665 transitions. [2019-12-18 23:36:53,439 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-12-18 23:36:53,439 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1665 transitions. [2019-12-18 23:36:53,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-12-18 23:36:53,441 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:36:53,441 INFO L411 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:36:53,644 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:53,644 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:36:53,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:36:53,645 INFO L82 PathProgramCache]: Analyzing trace with hash 314420454, now seen corresponding path program 13 times [2019-12-18 23:36:53,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:36:53,646 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138731393] [2019-12-18 23:36:53,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:36:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:36:53,900 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:53,901 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138731393] [2019-12-18 23:36:53,901 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488053912] [2019-12-18 23:36:53,901 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:36:53,967 INFO L264 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 22 conjunts are in the unsatisfiable core [2019-12-18 23:36:53,969 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:36:54,001 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:54,002 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:54,018 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:54,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:36:54,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2019-12-18 23:36:54,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371608983] [2019-12-18 23:36:54,022 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-12-18 23:36:54,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:36:54,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-12-18 23:36:54,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2019-12-18 23:36:54,022 INFO L87 Difference]: Start difference. First operand 764 states and 1665 transitions. Second operand 21 states. [2019-12-18 23:36:54,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:36:54,459 INFO L93 Difference]: Finished difference Result 1037 states and 2305 transitions. [2019-12-18 23:36:54,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-12-18 23:36:54,459 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 82 [2019-12-18 23:36:54,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:36:54,463 INFO L225 Difference]: With dead ends: 1037 [2019-12-18 23:36:54,463 INFO L226 Difference]: Without dead ends: 848 [2019-12-18 23:36:54,463 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=441, Invalid=1041, Unknown=0, NotChecked=0, Total=1482 [2019-12-18 23:36:54,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2019-12-18 23:36:54,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 549. [2019-12-18 23:36:54,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2019-12-18 23:36:54,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1231 transitions. [2019-12-18 23:36:54,476 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1231 transitions. Word has length 82 [2019-12-18 23:36:54,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:36:54,476 INFO L462 AbstractCegarLoop]: Abstraction has 549 states and 1231 transitions. [2019-12-18 23:36:54,477 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-12-18 23:36:54,477 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1231 transitions. [2019-12-18 23:36:54,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-12-18 23:36:54,478 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:36:54,478 INFO L411 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:36:54,693 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:54,693 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:36:54,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:36:54,693 INFO L82 PathProgramCache]: Analyzing trace with hash 383504003, now seen corresponding path program 14 times [2019-12-18 23:36:54,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:36:54,694 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405393133] [2019-12-18 23:36:54,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:36:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:36:54,948 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:54,949 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405393133] [2019-12-18 23:36:54,949 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234022423] [2019-12-18 23:36:54,949 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:55,020 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-18 23:36:55,020 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 23:36:55,021 INFO L264 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 24 conjunts are in the unsatisfiable core [2019-12-18 23:36:55,023 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:36:55,055 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:55,056 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:55,057 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:55,098 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:55,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:36:55,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2019-12-18 23:36:55,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086888787] [2019-12-18 23:36:55,100 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-12-18 23:36:55,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:36:55,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-12-18 23:36:55,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2019-12-18 23:36:55,101 INFO L87 Difference]: Start difference. First operand 549 states and 1231 transitions. Second operand 22 states. [2019-12-18 23:36:55,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:36:55,628 INFO L93 Difference]: Finished difference Result 1175 states and 2630 transitions. [2019-12-18 23:36:55,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-12-18 23:36:55,628 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 86 [2019-12-18 23:36:55,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:36:55,633 INFO L225 Difference]: With dead ends: 1175 [2019-12-18 23:36:55,633 INFO L226 Difference]: Without dead ends: 880 [2019-12-18 23:36:55,634 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=455, Invalid=1267, Unknown=0, NotChecked=0, Total=1722 [2019-12-18 23:36:55,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2019-12-18 23:36:55,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 562. [2019-12-18 23:36:55,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2019-12-18 23:36:55,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1257 transitions. [2019-12-18 23:36:55,647 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 1257 transitions. Word has length 86 [2019-12-18 23:36:55,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:36:55,647 INFO L462 AbstractCegarLoop]: Abstraction has 562 states and 1257 transitions. [2019-12-18 23:36:55,647 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-12-18 23:36:55,648 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 1257 transitions. [2019-12-18 23:36:55,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-12-18 23:36:55,649 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:36:55,649 INFO L411 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:36:55,852 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:55,853 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:36:55,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:36:55,853 INFO L82 PathProgramCache]: Analyzing trace with hash -91523296, now seen corresponding path program 15 times [2019-12-18 23:36:55,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:36:55,854 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014043076] [2019-12-18 23:36:55,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:36:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:36:56,099 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:56,099 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014043076] [2019-12-18 23:36:56,099 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570083028] [2019-12-18 23:36:56,100 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:56,163 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2019-12-18 23:36:56,163 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 23:36:56,165 INFO L264 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 25 conjunts are in the unsatisfiable core [2019-12-18 23:36:56,166 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:36:56,203 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:56,204 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:56,204 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:56,210 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:56,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:36:56,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2019-12-18 23:36:56,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289896672] [2019-12-18 23:36:56,211 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-12-18 23:36:56,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:36:56,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-12-18 23:36:56,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2019-12-18 23:36:56,212 INFO L87 Difference]: Start difference. First operand 562 states and 1257 transitions. Second operand 23 states. [2019-12-18 23:36:56,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:36:56,792 INFO L93 Difference]: Finished difference Result 1207 states and 2694 transitions. [2019-12-18 23:36:56,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-12-18 23:36:56,793 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 90 [2019-12-18 23:36:56,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:36:56,797 INFO L225 Difference]: With dead ends: 1207 [2019-12-18 23:36:56,797 INFO L226 Difference]: Without dead ends: 888 [2019-12-18 23:36:56,798 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=494, Invalid=1398, Unknown=0, NotChecked=0, Total=1892 [2019-12-18 23:36:56,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2019-12-18 23:36:56,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 860. [2019-12-18 23:36:56,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 860 states. [2019-12-18 23:36:56,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1857 transitions. [2019-12-18 23:36:56,811 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1857 transitions. Word has length 90 [2019-12-18 23:36:56,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:36:56,811 INFO L462 AbstractCegarLoop]: Abstraction has 860 states and 1857 transitions. [2019-12-18 23:36:56,811 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-12-18 23:36:56,812 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1857 transitions. [2019-12-18 23:36:56,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-12-18 23:36:56,814 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:36:56,814 INFO L411 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:36:57,017 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:57,017 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:36:57,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:36:57,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1057969219, now seen corresponding path program 16 times [2019-12-18 23:36:57,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:36:57,019 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851499001] [2019-12-18 23:36:57,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:36:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:36:57,264 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:57,265 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851499001] [2019-12-18 23:36:57,265 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664566830] [2019-12-18 23:36:57,265 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2019-12-18 23:36:57,324 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-18 23:36:57,325 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 23:36:57,326 INFO L264 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 25 conjunts are in the unsatisfiable core [2019-12-18 23:36:57,327 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:36:57,362 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:57,363 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:57,370 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:57,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:36:57,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2019-12-18 23:36:57,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026105728] [2019-12-18 23:36:57,371 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-12-18 23:36:57,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:36:57,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-12-18 23:36:57,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2019-12-18 23:36:57,372 INFO L87 Difference]: Start difference. First operand 860 states and 1857 transitions. Second operand 24 states. [2019-12-18 23:36:58,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:36:58,036 INFO L93 Difference]: Finished difference Result 1215 states and 2710 transitions. [2019-12-18 23:36:58,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-12-18 23:36:58,037 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 94 [2019-12-18 23:36:58,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:36:58,042 INFO L225 Difference]: With dead ends: 1215 [2019-12-18 23:36:58,042 INFO L226 Difference]: Without dead ends: 896 [2019-12-18 23:36:58,043 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=563, Invalid=1417, Unknown=0, NotChecked=0, Total=1980 [2019-12-18 23:36:58,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2019-12-18 23:36:58,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 570. [2019-12-18 23:36:58,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2019-12-18 23:36:58,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1273 transitions. [2019-12-18 23:36:58,058 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1273 transitions. Word has length 94 [2019-12-18 23:36:58,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:36:58,058 INFO L462 AbstractCegarLoop]: Abstraction has 570 states and 1273 transitions. [2019-12-18 23:36:58,059 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-12-18 23:36:58,059 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1273 transitions. [2019-12-18 23:36:58,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-12-18 23:36:58,061 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:36:58,061 INFO L411 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:36:58,264 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:58,265 INFO L410 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:36:58,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:36:58,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1550870362, now seen corresponding path program 17 times [2019-12-18 23:36:58,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:36:58,266 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045949022] [2019-12-18 23:36:58,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:36:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:36:58,570 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:58,570 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045949022] [2019-12-18 23:36:58,570 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437400033] [2019-12-18 23:36:58,570 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:58,641 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2019-12-18 23:36:58,642 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 23:36:58,643 INFO L264 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 26 conjunts are in the unsatisfiable core [2019-12-18 23:36:58,645 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:36:58,667 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:58,668 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-18 23:36:58,678 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:58,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:36:58,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2019-12-18 23:36:58,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694431610] [2019-12-18 23:36:58,679 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-12-18 23:36:58,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:36:58,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-12-18 23:36:58,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2019-12-18 23:36:58,680 INFO L87 Difference]: Start difference. First operand 570 states and 1273 transitions. Second operand 25 states. [2019-12-18 23:36:59,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:36:59,342 INFO L93 Difference]: Finished difference Result 1125 states and 2481 transitions. [2019-12-18 23:36:59,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-12-18 23:36:59,343 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 98 [2019-12-18 23:36:59,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:36:59,348 INFO L225 Difference]: With dead ends: 1125 [2019-12-18 23:36:59,349 INFO L226 Difference]: Without dead ends: 912 [2019-12-18 23:36:59,350 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=647, Invalid=1515, Unknown=0, NotChecked=0, Total=2162 [2019-12-18 23:36:59,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2019-12-18 23:36:59,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 589. [2019-12-18 23:36:59,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2019-12-18 23:36:59,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 1311 transitions. [2019-12-18 23:36:59,363 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 1311 transitions. Word has length 98 [2019-12-18 23:36:59,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:36:59,363 INFO L462 AbstractCegarLoop]: Abstraction has 589 states and 1311 transitions. [2019-12-18 23:36:59,363 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-12-18 23:36:59,364 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 1311 transitions. [2019-12-18 23:36:59,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-12-18 23:36:59,365 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:36:59,365 INFO L411 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:36:59,569 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:59,569 INFO L410 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:36:59,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:36:59,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1034309897, now seen corresponding path program 18 times [2019-12-18 23:36:59,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:36:59,570 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009679577] [2019-12-18 23:36:59,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:36:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:36:59,848 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 315 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:36:59,848 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009679577] [2019-12-18 23:36:59,849 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231609163] [2019-12-18 23:36:59,849 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:36:59,943 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-12-18 23:36:59,943 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-18 23:36:59,944 INFO L264 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 22 conjunts are in the unsatisfiable core [2019-12-18 23:36:59,946 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:37:00,005 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 343 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:37:00,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-18 23:37:00,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 25 [2019-12-18 23:37:00,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181923292] [2019-12-18 23:37:00,007 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-12-18 23:37:00,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:37:00,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-12-18 23:37:00,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2019-12-18 23:37:00,008 INFO L87 Difference]: Start difference. First operand 589 states and 1311 transitions. Second operand 23 states. [2019-12-18 23:37:00,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:37:00,373 INFO L93 Difference]: Finished difference Result 2013 states and 3924 transitions. [2019-12-18 23:37:00,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-12-18 23:37:00,374 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 102 [2019-12-18 23:37:00,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:37:00,374 INFO L225 Difference]: With dead ends: 2013 [2019-12-18 23:37:00,374 INFO L226 Difference]: Without dead ends: 0 [2019-12-18 23:37:00,375 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=609, Invalid=1371, Unknown=0, NotChecked=0, Total=1980 [2019-12-18 23:37:00,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-18 23:37:00,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-18 23:37:00,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-18 23:37:00,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-18 23:37:00,376 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 102 [2019-12-18 23:37:00,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:37:00,376 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-18 23:37:00,377 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-12-18 23:37:00,377 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-18 23:37:00,377 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-18 23:37:00,581 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:37:00,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 11:37:00 BasicIcfg [2019-12-18 23:37:00,587 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 23:37:00,589 INFO L168 Benchmark]: Toolchain (without parser) took 20981.43 ms. Allocated memory was 146.3 MB in the beginning and 436.7 MB in the end (delta: 290.5 MB). Free memory was 101.6 MB in the beginning and 312.3 MB in the end (delta: -210.7 MB). Peak memory consumption was 79.7 MB. Max. memory is 7.1 GB. [2019-12-18 23:37:00,590 INFO L168 Benchmark]: CDTParser took 0.71 ms. Allocated memory is still 146.3 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-12-18 23:37:00,590 INFO L168 Benchmark]: CACSL2BoogieTranslator took 733.66 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 101.2 MB in the beginning and 163.8 MB in the end (delta: -62.6 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2019-12-18 23:37:00,590 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.25 ms. Allocated memory is still 203.4 MB. Free memory was 163.8 MB in the beginning and 161.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-18 23:37:00,591 INFO L168 Benchmark]: Boogie Preprocessor took 27.44 ms. Allocated memory is still 203.4 MB. Free memory was 161.9 MB in the beginning and 159.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-18 23:37:00,591 INFO L168 Benchmark]: RCFGBuilder took 402.33 ms. Allocated memory is still 203.4 MB. Free memory was 159.9 MB in the beginning and 140.9 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2019-12-18 23:37:00,592 INFO L168 Benchmark]: TraceAbstraction took 19765.03 ms. Allocated memory was 203.4 MB in the beginning and 436.7 MB in the end (delta: 233.3 MB). Free memory was 140.2 MB in the beginning and 312.3 MB in the end (delta: -172.1 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. [2019-12-18 23:37:00,596 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71 ms. Allocated memory is still 146.3 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 733.66 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 101.2 MB in the beginning and 163.8 MB in the end (delta: -62.6 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.25 ms. Allocated memory is still 203.4 MB. Free memory was 163.8 MB in the beginning and 161.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.44 ms. Allocated memory is still 203.4 MB. Free memory was 161.9 MB in the beginning and 159.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 402.33 ms. Allocated memory is still 203.4 MB. Free memory was 159.9 MB in the beginning and 140.9 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19765.03 ms. Allocated memory was 203.4 MB in the beginning and 436.7 MB in the end (delta: 233.3 MB). Free memory was 140.2 MB in the beginning and 312.3 MB in the end (delta: -172.1 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 703]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 47 locations, 1 error locations. Result: SAFE, OverallTime: 19.6s, OverallIterations: 24, TraceHistogramMax: 11, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1606 SDtfs, 6574 SDslu, 10342 SDs, 0 SdLazy, 2074 SolverSat, 903 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1885 GetRequests, 1295 SyntacticMatches, 0 SemanticMatches, 590 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3392 ImplicationChecksByTransitivity, 8.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1013occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 24 MinimizatonAttempts, 3007 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 2668 NumberOfCodeBlocks, 2668 NumberOfCodeBlocksAsserted, 104 NumberOfCheckSat, 2624 ConstructedInterpolants, 0 QuantifiedInterpolants, 542692 SizeOfPredicates, 289 NumberOfNonLiveVariables, 3156 ConjunctsInSsa, 354 ConjunctsInUnsatCore, 44 InterpolantComputations, 5 PerfectInterpolantSequences, 658/4592 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...