/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-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 08:41:03,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 08:41:03,529 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 08:41:03,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 08:41:03,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 08:41:03,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 08:41:03,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 08:41:03,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 08:41:03,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 08:41:03,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 08:41:03,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 08:41:03,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 08:41:03,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 08:41:03,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 08:41:03,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 08:41:03,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 08:41:03,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 08:41:03,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 08:41:03,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 08:41:03,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 08:41:03,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 08:41:03,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 08:41:03,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 08:41:03,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 08:41:03,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-27 08:41:03,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-27 08:41:03,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-27 08:41:03,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-27 08:41:03,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-27 08:41:03,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-27 08:41:03,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 08:41:03,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 08:41:03,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 08:41:03,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 08:41:03,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 08:41:03,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 08:41:03,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 08:41:03,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 08:41:03,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 08:41:03,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 08:41:03,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 08:41:03,602 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 [2019-12-27 08:41:03,616 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 08:41:03,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 08:41:03,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 08:41:03,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 08:41:03,617 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 08:41:03,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 08:41:03,618 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 08:41:03,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 08:41:03,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 08:41:03,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 08:41:03,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 08:41:03,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 08:41:03,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 08:41:03,619 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 08:41:03,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 08:41:03,619 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 08:41:03,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 08:41:03,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 08:41:03,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 08:41:03,620 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 08:41:03,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 08:41:03,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 08:41:03,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 08:41:03,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 08:41:03,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 08:41:03,621 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 08:41:03,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 08:41:03,622 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2019-12-27 08:41:03,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 08:41:03,622 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 08:41:03,881 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 08:41:03,893 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 08:41:03,895 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 08:41:03,897 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 08:41:03,897 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 08:41:03,897 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-1.i [2019-12-27 08:41:03,969 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77d9c33b0/83400634a8fd46ceb43c49f22ee5aee9/FLAG1446d0604 [2019-12-27 08:41:04,494 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 08:41:04,495 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-1.i [2019-12-27 08:41:04,510 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77d9c33b0/83400634a8fd46ceb43c49f22ee5aee9/FLAG1446d0604 [2019-12-27 08:41:04,846 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77d9c33b0/83400634a8fd46ceb43c49f22ee5aee9 [2019-12-27 08:41:04,857 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 08:41:04,859 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 08:41:04,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 08:41:04,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 08:41:04,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 08:41:04,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 08:41:04" (1/1) ... [2019-12-27 08:41:04,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7af6c622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:41:04, skipping insertion in model container [2019-12-27 08:41:04,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 08:41:04" (1/1) ... [2019-12-27 08:41:04,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 08:41:04,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 08:41:05,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 08:41:05,434 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 08:41:05,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 08:41:05,579 INFO L208 MainTranslator]: Completed translation [2019-12-27 08:41:05,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:41:05 WrapperNode [2019-12-27 08:41:05,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 08:41:05,580 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 08:41:05,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 08:41:05,580 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 08:41:05,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:41:05" (1/1) ... [2019-12-27 08:41:05,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:41:05" (1/1) ... [2019-12-27 08:41:05,636 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 08:41:05,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 08:41:05,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 08:41:05,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 08:41:05,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:41:05" (1/1) ... [2019-12-27 08:41:05,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:41:05" (1/1) ... [2019-12-27 08:41:05,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:41:05" (1/1) ... [2019-12-27 08:41:05,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:41:05" (1/1) ... [2019-12-27 08:41:05,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:41:05" (1/1) ... [2019-12-27 08:41:05,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:41:05" (1/1) ... [2019-12-27 08:41:05,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:41:05" (1/1) ... [2019-12-27 08:41:05,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 08:41:05,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 08:41:05,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 08:41:05,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 08:41:05,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:41:05" (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 [2019-12-27 08:41:05,737 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2019-12-27 08:41:05,738 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2019-12-27 08:41:05,738 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2019-12-27 08:41:05,738 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2019-12-27 08:41:05,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 08:41:05,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-27 08:41:05,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 08:41:05,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 08:41:05,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-27 08:41:05,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 08:41:05,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 08:41:05,741 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-27 08:41:06,064 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 08:41:06,065 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-27 08:41:06,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 08:41:06 BoogieIcfgContainer [2019-12-27 08:41:06,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 08:41:06,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 08:41:06,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 08:41:06,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 08:41:06,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 08:41:04" (1/3) ... [2019-12-27 08:41:06,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@482675e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 08:41:06, skipping insertion in model container [2019-12-27 08:41:06,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:41:05" (2/3) ... [2019-12-27 08:41:06,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@482675e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 08:41:06, skipping insertion in model container [2019-12-27 08:41:06,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 08:41:06" (3/3) ... [2019-12-27 08:41:06,075 INFO L109 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2019-12-27 08:41:06,085 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 08:41:06,086 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 08:41:06,092 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 08:41:06,094 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 08:41:06,122 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,122 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,123 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,123 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,124 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,124 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,124 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,125 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,125 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,125 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,126 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,126 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,126 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,126 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,127 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,127 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,127 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,128 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,128 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,128 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,129 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,130 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,131 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,131 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,131 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,132 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,132 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,132 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,136 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,136 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,137 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,137 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,137 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,137 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,144 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,144 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,145 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,145 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,145 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,145 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:06,161 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-27 08:41:06,181 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 08:41:06,181 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 08:41:06,181 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 08:41:06,181 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 08:41:06,181 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 08:41:06,182 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 08:41:06,182 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 08:41:06,182 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 08:41:06,193 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 53 places, 51 transitions [2019-12-27 08:41:06,273 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1013 states. [2019-12-27 08:41:06,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states. [2019-12-27 08:41:06,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-27 08:41:06,287 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:06,288 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] [2019-12-27 08:41:06,288 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:06,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:06,295 INFO L82 PathProgramCache]: Analyzing trace with hash -910010, now seen corresponding path program 1 times [2019-12-27 08:41:06,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:06,305 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818857811] [2019-12-27 08:41:06,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:06,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:06,796 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818857811] [2019-12-27 08:41:06,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:41:06,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-27 08:41:06,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146011328] [2019-12-27 08:41:06,804 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 08:41:06,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:06,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 08:41:06,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 08:41:06,819 INFO L87 Difference]: Start difference. First operand 1013 states. Second operand 5 states. [2019-12-27 08:41:07,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:07,005 INFO L93 Difference]: Finished difference Result 1778 states and 5126 transitions. [2019-12-27 08:41:07,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-27 08:41:07,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-12-27 08:41:07,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:07,029 INFO L225 Difference]: With dead ends: 1778 [2019-12-27 08:41:07,030 INFO L226 Difference]: Without dead ends: 500 [2019-12-27 08:41:07,031 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 [2019-12-27 08:41:07,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2019-12-27 08:41:07,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 388. [2019-12-27 08:41:07,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2019-12-27 08:41:07,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 993 transitions. [2019-12-27 08:41:07,124 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 993 transitions. Word has length 20 [2019-12-27 08:41:07,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:07,124 INFO L462 AbstractCegarLoop]: Abstraction has 388 states and 993 transitions. [2019-12-27 08:41:07,125 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 08:41:07,125 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 993 transitions. [2019-12-27 08:41:07,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-27 08:41:07,126 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:07,127 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] [2019-12-27 08:41:07,127 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:07,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:07,128 INFO L82 PathProgramCache]: Analyzing trace with hash 723642448, now seen corresponding path program 1 times [2019-12-27 08:41:07,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:07,128 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467322030] [2019-12-27 08:41:07,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:07,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:07,259 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467322030] [2019-12-27 08:41:07,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:41:07,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-27 08:41:07,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771543707] [2019-12-27 08:41:07,263 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 08:41:07,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:07,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 08:41:07,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-27 08:41:07,266 INFO L87 Difference]: Start difference. First operand 388 states and 993 transitions. Second operand 5 states. [2019-12-27 08:41:07,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:07,385 INFO L93 Difference]: Finished difference Result 563 states and 1392 transitions. [2019-12-27 08:41:07,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-27 08:41:07,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-12-27 08:41:07,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:07,393 INFO L225 Difference]: With dead ends: 563 [2019-12-27 08:41:07,393 INFO L226 Difference]: Without dead ends: 354 [2019-12-27 08:41:07,395 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-12-27 08:41:07,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2019-12-27 08:41:07,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2019-12-27 08:41:07,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2019-12-27 08:41:07,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 883 transitions. [2019-12-27 08:41:07,444 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 883 transitions. Word has length 23 [2019-12-27 08:41:07,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:07,444 INFO L462 AbstractCegarLoop]: Abstraction has 354 states and 883 transitions. [2019-12-27 08:41:07,447 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 08:41:07,447 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 883 transitions. [2019-12-27 08:41:07,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-27 08:41:07,448 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:07,449 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] [2019-12-27 08:41:07,449 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:07,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:07,449 INFO L82 PathProgramCache]: Analyzing trace with hash -660572760, now seen corresponding path program 1 times [2019-12-27 08:41:07,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:07,452 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131470951] [2019-12-27 08:41:07,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:07,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:07,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:07,575 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131470951] [2019-12-27 08:41:07,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:41:07,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-27 08:41:07,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026230882] [2019-12-27 08:41:07,577 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 08:41:07,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:07,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 08:41:07,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-27 08:41:07,579 INFO L87 Difference]: Start difference. First operand 354 states and 883 transitions. Second operand 5 states. [2019-12-27 08:41:07,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:07,650 INFO L93 Difference]: Finished difference Result 431 states and 1037 transitions. [2019-12-27 08:41:07,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 08:41:07,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-12-27 08:41:07,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:07,653 INFO L225 Difference]: With dead ends: 431 [2019-12-27 08:41:07,653 INFO L226 Difference]: Without dead ends: 301 [2019-12-27 08:41:07,654 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 [2019-12-27 08:41:07,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2019-12-27 08:41:07,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 288. [2019-12-27 08:41:07,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2019-12-27 08:41:07,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 709 transitions. [2019-12-27 08:41:07,668 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 709 transitions. Word has length 23 [2019-12-27 08:41:07,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:07,668 INFO L462 AbstractCegarLoop]: Abstraction has 288 states and 709 transitions. [2019-12-27 08:41:07,669 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 08:41:07,669 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 709 transitions. [2019-12-27 08:41:07,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-27 08:41:07,670 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:07,671 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] [2019-12-27 08:41:07,671 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:07,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:07,672 INFO L82 PathProgramCache]: Analyzing trace with hash -962769584, now seen corresponding path program 1 times [2019-12-27 08:41:07,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:07,672 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468609918] [2019-12-27 08:41:07,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:07,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:07,812 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468609918] [2019-12-27 08:41:07,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:41:07,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-27 08:41:07,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89435616] [2019-12-27 08:41:07,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-27 08:41:07,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:07,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-27 08:41:07,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-12-27 08:41:07,814 INFO L87 Difference]: Start difference. First operand 288 states and 709 transitions. Second operand 6 states. [2019-12-27 08:41:07,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:07,940 INFO L93 Difference]: Finished difference Result 448 states and 1078 transitions. [2019-12-27 08:41:07,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-27 08:41:07,940 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2019-12-27 08:41:07,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:07,943 INFO L225 Difference]: With dead ends: 448 [2019-12-27 08:41:07,943 INFO L226 Difference]: Without dead ends: 320 [2019-12-27 08:41:07,944 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 [2019-12-27 08:41:07,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2019-12-27 08:41:07,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2019-12-27 08:41:07,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2019-12-27 08:41:07,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 773 transitions. [2019-12-27 08:41:07,957 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 773 transitions. Word has length 26 [2019-12-27 08:41:07,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:07,957 INFO L462 AbstractCegarLoop]: Abstraction has 320 states and 773 transitions. [2019-12-27 08:41:07,957 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-27 08:41:07,958 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 773 transitions. [2019-12-27 08:41:07,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-27 08:41:07,959 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:07,959 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] [2019-12-27 08:41:07,960 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:07,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:07,960 INFO L82 PathProgramCache]: Analyzing trace with hash -327915495, now seen corresponding path program 1 times [2019-12-27 08:41:07,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:07,961 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381849020] [2019-12-27 08:41:07,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:08,096 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381849020] [2019-12-27 08:41:08,096 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624229095] [2019-12-27 08:41:08,096 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 [2019-12-27 08:41:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:08,191 INFO L264 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-27 08:41:08,198 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:08,284 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:08,290 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:08,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:08,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:08,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-12-27 08:41:08,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000252074] [2019-12-27 08:41:08,302 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-27 08:41:08,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:08,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-27 08:41:08,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-12-27 08:41:08,303 INFO L87 Difference]: Start difference. First operand 320 states and 773 transitions. Second operand 8 states. [2019-12-27 08:41:08,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:08,439 INFO L93 Difference]: Finished difference Result 565 states and 1361 transitions. [2019-12-27 08:41:08,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-27 08:41:08,440 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2019-12-27 08:41:08,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:08,443 INFO L225 Difference]: With dead ends: 565 [2019-12-27 08:41:08,443 INFO L226 Difference]: Without dead ends: 376 [2019-12-27 08:41:08,444 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 [2019-12-27 08:41:08,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2019-12-27 08:41:08,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 364. [2019-12-27 08:41:08,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2019-12-27 08:41:08,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 865 transitions. [2019-12-27 08:41:08,457 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 865 transitions. Word has length 30 [2019-12-27 08:41:08,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:08,458 INFO L462 AbstractCegarLoop]: Abstraction has 364 states and 865 transitions. [2019-12-27 08:41:08,458 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-27 08:41:08,458 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 865 transitions. [2019-12-27 08:41:08,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-27 08:41:08,459 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:08,459 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] [2019-12-27 08:41:08,668 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:08,669 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:08,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:08,670 INFO L82 PathProgramCache]: Analyzing trace with hash -243930643, now seen corresponding path program 1 times [2019-12-27 08:41:08,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:08,671 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067199427] [2019-12-27 08:41:08,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:08,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:08,797 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067199427] [2019-12-27 08:41:08,797 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442935076] [2019-12-27 08:41:08,797 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 [2019-12-27 08:41:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:08,851 INFO L264 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-27 08:41:08,854 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:08,874 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:08,875 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:08,877 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:08,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:08,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:08,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-12-27 08:41:08,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981348173] [2019-12-27 08:41:08,882 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-27 08:41:08,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:08,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-27 08:41:08,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-12-27 08:41:08,883 INFO L87 Difference]: Start difference. First operand 364 states and 865 transitions. Second operand 8 states. [2019-12-27 08:41:08,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:08,994 INFO L93 Difference]: Finished difference Result 649 states and 1529 transitions. [2019-12-27 08:41:08,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-27 08:41:08,995 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2019-12-27 08:41:08,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:09,000 INFO L225 Difference]: With dead ends: 649 [2019-12-27 08:41:09,000 INFO L226 Difference]: Without dead ends: 460 [2019-12-27 08:41:09,001 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 [2019-12-27 08:41:09,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2019-12-27 08:41:09,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 392. [2019-12-27 08:41:09,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2019-12-27 08:41:09,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 917 transitions. [2019-12-27 08:41:09,018 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 917 transitions. Word has length 30 [2019-12-27 08:41:09,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:09,019 INFO L462 AbstractCegarLoop]: Abstraction has 392 states and 917 transitions. [2019-12-27 08:41:09,019 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-27 08:41:09,019 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 917 transitions. [2019-12-27 08:41:09,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-12-27 08:41:09,022 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:09,023 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] [2019-12-27 08:41:09,226 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:09,228 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:09,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:09,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1246329683, now seen corresponding path program 1 times [2019-12-27 08:41:09,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:09,229 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52368353] [2019-12-27 08:41:09,230 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:09,375 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:09,376 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52368353] [2019-12-27 08:41:09,376 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708593492] [2019-12-27 08:41:09,376 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 [2019-12-27 08:41:09,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:09,456 INFO L264 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-27 08:41:09,458 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:09,490 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:09,493 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:09,498 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:09,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:09,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-12-27 08:41:09,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100298421] [2019-12-27 08:41:09,501 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-27 08:41:09,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:09,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-27 08:41:09,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-12-27 08:41:09,501 INFO L87 Difference]: Start difference. First operand 392 states and 917 transitions. Second operand 10 states. [2019-12-27 08:41:09,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:09,736 INFO L93 Difference]: Finished difference Result 803 states and 1886 transitions. [2019-12-27 08:41:09,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-27 08:41:09,737 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2019-12-27 08:41:09,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:09,740 INFO L225 Difference]: With dead ends: 803 [2019-12-27 08:41:09,740 INFO L226 Difference]: Without dead ends: 508 [2019-12-27 08:41:09,741 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2019-12-27 08:41:09,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2019-12-27 08:41:09,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 424. [2019-12-27 08:41:09,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2019-12-27 08:41:09,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 981 transitions. [2019-12-27 08:41:09,754 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 981 transitions. Word has length 38 [2019-12-27 08:41:09,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:09,755 INFO L462 AbstractCegarLoop]: Abstraction has 424 states and 981 transitions. [2019-12-27 08:41:09,755 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-27 08:41:09,755 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 981 transitions. [2019-12-27 08:41:09,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-12-27 08:41:09,756 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:09,756 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] [2019-12-27 08:41:09,967 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:09,968 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:09,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:09,968 INFO L82 PathProgramCache]: Analyzing trace with hash -40518361, now seen corresponding path program 2 times [2019-12-27 08:41:09,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:09,969 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507841191] [2019-12-27 08:41:09,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:10,084 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:10,084 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507841191] [2019-12-27 08:41:10,085 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857765545] [2019-12-27 08:41:10,085 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 [2019-12-27 08:41:10,145 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-27 08:41:10,146 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:41:10,147 INFO L264 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-27 08:41:10,155 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:10,183 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:10,183 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:10,186 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:10,191 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:10,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:10,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-12-27 08:41:10,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802923931] [2019-12-27 08:41:10,193 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-27 08:41:10,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:10,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-27 08:41:10,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-12-27 08:41:10,194 INFO L87 Difference]: Start difference. First operand 424 states and 981 transitions. Second operand 10 states. [2019-12-27 08:41:10,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:10,402 INFO L93 Difference]: Finished difference Result 807 states and 1894 transitions. [2019-12-27 08:41:10,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-27 08:41:10,403 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2019-12-27 08:41:10,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:10,406 INFO L225 Difference]: With dead ends: 807 [2019-12-27 08:41:10,406 INFO L226 Difference]: Without dead ends: 488 [2019-12-27 08:41:10,407 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 [2019-12-27 08:41:10,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2019-12-27 08:41:10,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 460. [2019-12-27 08:41:10,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2019-12-27 08:41:10,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 1057 transitions. [2019-12-27 08:41:10,420 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 1057 transitions. Word has length 38 [2019-12-27 08:41:10,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:10,420 INFO L462 AbstractCegarLoop]: Abstraction has 460 states and 1057 transitions. [2019-12-27 08:41:10,420 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-27 08:41:10,421 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 1057 transitions. [2019-12-27 08:41:10,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-12-27 08:41:10,422 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:10,422 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] [2019-12-27 08:41:10,625 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:10,625 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:10,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:10,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1361267571, now seen corresponding path program 3 times [2019-12-27 08:41:10,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:10,628 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127740263] [2019-12-27 08:41:10,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:10,768 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:10,768 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127740263] [2019-12-27 08:41:10,768 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648823684] [2019-12-27 08:41:10,768 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 [2019-12-27 08:41:10,851 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-12-27 08:41:10,851 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:41:10,852 INFO L264 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-27 08:41:10,854 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:10,875 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:10,877 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:10,886 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:10,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:10,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-12-27 08:41:10,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461286914] [2019-12-27 08:41:10,887 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-27 08:41:10,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:10,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-27 08:41:10,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-12-27 08:41:10,888 INFO L87 Difference]: Start difference. First operand 460 states and 1057 transitions. Second operand 12 states. [2019-12-27 08:41:11,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:11,088 INFO L93 Difference]: Finished difference Result 717 states and 1665 transitions. [2019-12-27 08:41:11,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-27 08:41:11,089 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2019-12-27 08:41:11,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:11,092 INFO L225 Difference]: With dead ends: 717 [2019-12-27 08:41:11,092 INFO L226 Difference]: Without dead ends: 480 [2019-12-27 08:41:11,093 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2019-12-27 08:41:11,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2019-12-27 08:41:11,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 365. [2019-12-27 08:41:11,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2019-12-27 08:41:11,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 863 transitions. [2019-12-27 08:41:11,107 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 863 transitions. Word has length 46 [2019-12-27 08:41:11,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:11,107 INFO L462 AbstractCegarLoop]: Abstraction has 365 states and 863 transitions. [2019-12-27 08:41:11,107 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-27 08:41:11,107 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 863 transitions. [2019-12-27 08:41:11,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-12-27 08:41:11,108 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:11,108 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] [2019-12-27 08:41:11,320 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:11,321 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:11,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:11,321 INFO L82 PathProgramCache]: Analyzing trace with hash 2041820769, now seen corresponding path program 4 times [2019-12-27 08:41:11,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:11,322 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520065633] [2019-12-27 08:41:11,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:11,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:11,423 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:11,423 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520065633] [2019-12-27 08:41:11,424 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138466689] [2019-12-27 08:41:11,424 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 [2019-12-27 08:41:11,481 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-27 08:41:11,481 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:41:11,482 INFO L264 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-27 08:41:11,484 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:11,504 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:11,504 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:11,507 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:11,511 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:11,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:11,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-12-27 08:41:11,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381713311] [2019-12-27 08:41:11,513 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-27 08:41:11,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:11,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-27 08:41:11,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-12-27 08:41:11,513 INFO L87 Difference]: Start difference. First operand 365 states and 863 transitions. Second operand 12 states. [2019-12-27 08:41:11,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:11,712 INFO L93 Difference]: Finished difference Result 709 states and 1649 transitions. [2019-12-27 08:41:11,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-27 08:41:11,713 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2019-12-27 08:41:11,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:11,715 INFO L225 Difference]: With dead ends: 709 [2019-12-27 08:41:11,715 INFO L226 Difference]: Without dead ends: 496 [2019-12-27 08:41:11,715 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2019-12-27 08:41:11,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2019-12-27 08:41:11,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 378. [2019-12-27 08:41:11,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2019-12-27 08:41:11,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 889 transitions. [2019-12-27 08:41:11,726 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 889 transitions. Word has length 46 [2019-12-27 08:41:11,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:11,726 INFO L462 AbstractCegarLoop]: Abstraction has 378 states and 889 transitions. [2019-12-27 08:41:11,726 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-27 08:41:11,726 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 889 transitions. [2019-12-27 08:41:11,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-12-27 08:41:11,727 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:11,727 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] [2019-12-27 08:41:11,930 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:11,931 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:11,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:11,932 INFO L82 PathProgramCache]: Analyzing trace with hash 216399870, now seen corresponding path program 5 times [2019-12-27 08:41:11,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:11,933 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779940885] [2019-12-27 08:41:11,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:12,054 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:12,054 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779940885] [2019-12-27 08:41:12,055 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698597034] [2019-12-27 08:41:12,055 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 [2019-12-27 08:41:12,131 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-12-27 08:41:12,131 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:41:12,132 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjunts are in the unsatisfiable core [2019-12-27 08:41:12,135 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:12,153 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:12,154 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:12,156 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:12,159 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:12,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:12,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-12-27 08:41:12,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795571140] [2019-12-27 08:41:12,161 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-27 08:41:12,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:12,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-27 08:41:12,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-12-27 08:41:12,161 INFO L87 Difference]: Start difference. First operand 378 states and 889 transitions. Second operand 13 states. [2019-12-27 08:41:12,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:12,384 INFO L93 Difference]: Finished difference Result 741 states and 1713 transitions. [2019-12-27 08:41:12,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-12-27 08:41:12,384 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 50 [2019-12-27 08:41:12,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:12,387 INFO L225 Difference]: With dead ends: 741 [2019-12-27 08:41:12,387 INFO L226 Difference]: Without dead ends: 528 [2019-12-27 08:41:12,387 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 [2019-12-27 08:41:12,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2019-12-27 08:41:12,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 397. [2019-12-27 08:41:12,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2019-12-27 08:41:12,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 927 transitions. [2019-12-27 08:41:12,398 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 927 transitions. Word has length 50 [2019-12-27 08:41:12,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:12,398 INFO L462 AbstractCegarLoop]: Abstraction has 397 states and 927 transitions. [2019-12-27 08:41:12,398 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-27 08:41:12,398 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 927 transitions. [2019-12-27 08:41:12,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-12-27 08:41:12,399 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:12,399 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] [2019-12-27 08:41:12,603 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:12,603 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:12,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:12,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1337338469, now seen corresponding path program 6 times [2019-12-27 08:41:12,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:12,605 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125159872] [2019-12-27 08:41:12,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:12,728 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:12,728 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125159872] [2019-12-27 08:41:12,729 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632394651] [2019-12-27 08:41:12,729 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 [2019-12-27 08:41:12,783 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-12-27 08:41:12,784 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:41:12,785 INFO L264 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 16 conjunts are in the unsatisfiable core [2019-12-27 08:41:12,787 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:12,816 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:12,817 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:12,818 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:12,822 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:12,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:12,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2019-12-27 08:41:12,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325051543] [2019-12-27 08:41:12,824 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-12-27 08:41:12,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:12,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-12-27 08:41:12,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2019-12-27 08:41:12,824 INFO L87 Difference]: Start difference. First operand 397 states and 927 transitions. Second operand 14 states. [2019-12-27 08:41:13,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:13,074 INFO L93 Difference]: Finished difference Result 801 states and 1833 transitions. [2019-12-27 08:41:13,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-12-27 08:41:13,074 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2019-12-27 08:41:13,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:13,078 INFO L225 Difference]: With dead ends: 801 [2019-12-27 08:41:13,078 INFO L226 Difference]: Without dead ends: 612 [2019-12-27 08:41:13,078 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 [2019-12-27 08:41:13,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2019-12-27 08:41:13,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 572. [2019-12-27 08:41:13,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2019-12-27 08:41:13,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 1281 transitions. [2019-12-27 08:41:13,093 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 1281 transitions. Word has length 54 [2019-12-27 08:41:13,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:13,093 INFO L462 AbstractCegarLoop]: Abstraction has 572 states and 1281 transitions. [2019-12-27 08:41:13,093 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-12-27 08:41:13,093 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 1281 transitions. [2019-12-27 08:41:13,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-12-27 08:41:13,095 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:13,095 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] [2019-12-27 08:41:13,298 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:13,298 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:13,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:13,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1662726712, now seen corresponding path program 7 times [2019-12-27 08:41:13,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:13,299 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675727165] [2019-12-27 08:41:13,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:13,480 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:13,481 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675727165] [2019-12-27 08:41:13,482 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041557612] [2019-12-27 08:41:13,482 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 [2019-12-27 08:41:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:13,561 INFO L264 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 16 conjunts are in the unsatisfiable core [2019-12-27 08:41:13,570 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:13,603 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:13,604 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:13,606 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:13,619 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:13,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:13,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-12-27 08:41:13,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859137919] [2019-12-27 08:41:13,621 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-12-27 08:41:13,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:13,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-12-27 08:41:13,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2019-12-27 08:41:13,623 INFO L87 Difference]: Start difference. First operand 572 states and 1281 transitions. Second operand 15 states. [2019-12-27 08:41:13,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:13,977 INFO L93 Difference]: Finished difference Result 829 states and 1889 transitions. [2019-12-27 08:41:13,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-12-27 08:41:13,977 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 58 [2019-12-27 08:41:13,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:13,981 INFO L225 Difference]: With dead ends: 829 [2019-12-27 08:41:13,981 INFO L226 Difference]: Without dead ends: 616 [2019-12-27 08:41:13,982 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=207, Invalid=495, Unknown=0, NotChecked=0, Total=702 [2019-12-27 08:41:13,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-12-27 08:41:13,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 604. [2019-12-27 08:41:13,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2019-12-27 08:41:13,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 1345 transitions. [2019-12-27 08:41:13,996 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 1345 transitions. Word has length 58 [2019-12-27 08:41:13,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:13,997 INFO L462 AbstractCegarLoop]: Abstraction has 604 states and 1345 transitions. [2019-12-27 08:41:13,997 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-12-27 08:41:13,997 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 1345 transitions. [2019-12-27 08:41:13,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-12-27 08:41:13,998 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:13,998 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] [2019-12-27 08:41:14,202 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:14,205 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:14,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:14,206 INFO L82 PathProgramCache]: Analyzing trace with hash -774759723, now seen corresponding path program 8 times [2019-12-27 08:41:14,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:14,207 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392414466] [2019-12-27 08:41:14,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:14,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:14,338 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 60 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:14,338 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392414466] [2019-12-27 08:41:14,338 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549602859] [2019-12-27 08:41:14,338 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 [2019-12-27 08:41:14,394 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-27 08:41:14,394 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:41:14,395 INFO L264 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-27 08:41:14,396 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:14,425 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:14,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-27 08:41:14,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 15 [2019-12-27 08:41:14,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019572937] [2019-12-27 08:41:14,426 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-27 08:41:14,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:14,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-27 08:41:14,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2019-12-27 08:41:14,427 INFO L87 Difference]: Start difference. First operand 604 states and 1345 transitions. Second operand 13 states. [2019-12-27 08:41:14,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:14,645 INFO L93 Difference]: Finished difference Result 1276 states and 2576 transitions. [2019-12-27 08:41:14,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-12-27 08:41:14,646 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 62 [2019-12-27 08:41:14,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:14,649 INFO L225 Difference]: With dead ends: 1276 [2019-12-27 08:41:14,650 INFO L226 Difference]: Without dead ends: 420 [2019-12-27 08:41:14,650 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=416, Unknown=0, NotChecked=0, Total=600 [2019-12-27 08:41:14,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2019-12-27 08:41:14,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2019-12-27 08:41:14,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2019-12-27 08:41:14,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 916 transitions. [2019-12-27 08:41:14,660 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 916 transitions. Word has length 62 [2019-12-27 08:41:14,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:14,660 INFO L462 AbstractCegarLoop]: Abstraction has 420 states and 916 transitions. [2019-12-27 08:41:14,660 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-27 08:41:14,661 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 916 transitions. [2019-12-27 08:41:14,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-12-27 08:41:14,661 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:14,662 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] [2019-12-27 08:41:14,865 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:14,866 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:14,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:14,867 INFO L82 PathProgramCache]: Analyzing trace with hash -944506201, now seen corresponding path program 9 times [2019-12-27 08:41:14,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:14,868 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747840138] [2019-12-27 08:41:14,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:14,998 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 47 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:14,998 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747840138] [2019-12-27 08:41:14,999 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68944875] [2019-12-27 08:41:14,999 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 [2019-12-27 08:41:15,060 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-12-27 08:41:15,061 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:41:15,061 INFO L264 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-27 08:41:15,063 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:15,091 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:15,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-27 08:41:15,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 15 [2019-12-27 08:41:15,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681501509] [2019-12-27 08:41:15,092 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-27 08:41:15,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:15,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-27 08:41:15,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2019-12-27 08:41:15,093 INFO L87 Difference]: Start difference. First operand 420 states and 916 transitions. Second operand 13 states. [2019-12-27 08:41:15,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:15,243 INFO L93 Difference]: Finished difference Result 556 states and 987 transitions. [2019-12-27 08:41:15,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-12-27 08:41:15,243 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 62 [2019-12-27 08:41:15,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:15,244 INFO L225 Difference]: With dead ends: 556 [2019-12-27 08:41:15,244 INFO L226 Difference]: Without dead ends: 0 [2019-12-27 08:41:15,245 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=416, Unknown=0, NotChecked=0, Total=600 [2019-12-27 08:41:15,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-27 08:41:15,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-27 08:41:15,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-27 08:41:15,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-27 08:41:15,245 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2019-12-27 08:41:15,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:15,245 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-27 08:41:15,246 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-27 08:41:15,246 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-27 08:41:15,246 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-27 08:41:15,449 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:15,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 08:41:15 BasicIcfg [2019-12-27 08:41:15,457 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 08:41:15,459 INFO L168 Benchmark]: Toolchain (without parser) took 10600.11 ms. Allocated memory was 145.2 MB in the beginning and 308.3 MB in the end (delta: 163.1 MB). Free memory was 101.9 MB in the beginning and 195.8 MB in the end (delta: -93.9 MB). Peak memory consumption was 69.2 MB. Max. memory is 7.1 GB. [2019-12-27 08:41:15,459 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-12-27 08:41:15,460 INFO L168 Benchmark]: CACSL2BoogieTranslator took 720.04 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 101.7 MB in the beginning and 159.5 MB in the end (delta: -57.8 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2019-12-27 08:41:15,461 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.84 ms. Allocated memory is still 202.4 MB. Free memory was 159.5 MB in the beginning and 157.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-27 08:41:15,462 INFO L168 Benchmark]: Boogie Preprocessor took 30.28 ms. Allocated memory is still 202.4 MB. Free memory was 157.4 MB in the beginning and 156.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-27 08:41:15,462 INFO L168 Benchmark]: RCFGBuilder took 399.55 ms. Allocated memory is still 202.4 MB. Free memory was 156.1 MB in the beginning and 136.3 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2019-12-27 08:41:15,463 INFO L168 Benchmark]: TraceAbstraction took 9389.17 ms. Allocated memory was 202.4 MB in the beginning and 308.3 MB in the end (delta: 105.9 MB). Free memory was 136.3 MB in the beginning and 195.8 MB in the end (delta: -59.5 MB). Peak memory consumption was 46.4 MB. Max. memory is 7.1 GB. [2019-12-27 08:41:15,466 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 720.04 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 101.7 MB in the beginning and 159.5 MB in the end (delta: -57.8 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.84 ms. Allocated memory is still 202.4 MB. Free memory was 159.5 MB in the beginning and 157.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.28 ms. Allocated memory is still 202.4 MB. Free memory was 157.4 MB in the beginning and 156.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 399.55 ms. Allocated memory is still 202.4 MB. Free memory was 156.1 MB in the beginning and 136.3 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9389.17 ms. Allocated memory was 202.4 MB in the beginning and 308.3 MB in the end (delta: 105.9 MB). Free memory was 136.3 MB in the beginning and 195.8 MB in the end (delta: -59.5 MB). Peak memory consumption was 46.4 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: 9.2s, OverallIterations: 15, TraceHistogramMax: 6, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 984 SDtfs, 2611 SDslu, 4192 SDs, 0 SdLazy, 823 SolverSat, 279 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 749 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 2.7s 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: 0.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 733 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 1120 NumberOfCodeBlocks, 1120 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 1094 ConstructedInterpolants, 0 QuantifiedInterpolants, 143058 SizeOfPredicates, 106 NumberOfNonLiveVariables, 1347 ConjunctsInSsa, 137 ConjunctsInUnsatCore, 26 InterpolantComputations, 6 PerfectInterpolantSequences, 253/666 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...