/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-atomic/lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 23:12:17,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 23:12:17,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 23:12:17,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 23:12:17,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 23:12:17,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 23:12:17,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 23:12:17,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 23:12:17,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 23:12:17,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 23:12:17,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 23:12:17,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 23:12:17,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 23:12:17,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 23:12:17,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 23:12:17,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 23:12:17,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 23:12:17,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 23:12:17,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 23:12:17,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 23:12:17,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 23:12:17,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 23:12:17,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 23:12:17,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 23:12:17,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-05 23:12:17,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 23:12:17,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 23:12:17,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 23:12:17,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 23:12:17,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 23:12:17,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 23:12:17,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 23:12:17,652 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 23:12:17,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 23:12:17,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 23:12:17,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 23:12:17,656 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-05 23:12:17,692 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 23:12:17,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 23:12:17,694 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 23:12:17,694 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 23:12:17,695 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 23:12:17,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 23:12:17,695 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 23:12:17,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 23:12:17,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 23:12:17,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 23:12:17,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 23:12:17,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 23:12:17,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 23:12:17,697 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 23:12:17,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 23:12:17,698 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 23:12:17,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 23:12:17,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 23:12:17,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 23:12:17,699 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 23:12:17,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 23:12:17,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 23:12:17,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 23:12:17,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-05 23:12:17,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 23:12:17,700 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 23:12:17,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 23:12:17,700 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-05 23:12:17,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 23:12:18,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 23:12:18,022 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 23:12:18,025 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 23:12:18,027 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 23:12:18,027 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 23:12:18,028 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/lamport.i [2020-10-05 23:12:18,098 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca6de6163/9a1b0e5ce3964f3983c201ef82dfd027/FLAG3f3d7d57c [2020-10-05 23:12:18,661 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 23:12:18,662 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i [2020-10-05 23:12:18,674 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca6de6163/9a1b0e5ce3964f3983c201ef82dfd027/FLAG3f3d7d57c [2020-10-05 23:12:18,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca6de6163/9a1b0e5ce3964f3983c201ef82dfd027 [2020-10-05 23:12:18,934 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 23:12:18,935 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 23:12:18,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 23:12:18,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 23:12:18,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 23:12:18,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:12:18" (1/1) ... [2020-10-05 23:12:18,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ec82c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:18, skipping insertion in model container [2020-10-05 23:12:18,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:12:18" (1/1) ... [2020-10-05 23:12:18,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 23:12:19,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 23:12:19,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:12:19,513 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 23:12:19,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:12:19,642 INFO L208 MainTranslator]: Completed translation [2020-10-05 23:12:19,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:19 WrapperNode [2020-10-05 23:12:19,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 23:12:19,644 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 23:12:19,644 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 23:12:19,644 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 23:12:19,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:19" (1/1) ... [2020-10-05 23:12:19,670 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:19" (1/1) ... [2020-10-05 23:12:19,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 23:12:19,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 23:12:19,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 23:12:19,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 23:12:19,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:19" (1/1) ... [2020-10-05 23:12:19,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:19" (1/1) ... [2020-10-05 23:12:19,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:19" (1/1) ... [2020-10-05 23:12:19,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:19" (1/1) ... [2020-10-05 23:12:19,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:19" (1/1) ... [2020-10-05 23:12:19,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:19" (1/1) ... [2020-10-05 23:12:19,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:19" (1/1) ... [2020-10-05 23:12:19,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 23:12:19,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 23:12:19,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 23:12:19,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 23:12:19,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 23:12:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-05 23:12:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-05 23:12:19,808 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-05 23:12:19,808 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-05 23:12:19,808 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-05 23:12:19,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 23:12:19,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 23:12:19,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 23:12:19,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 23:12:19,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 23:12:19,810 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 23:12:20,151 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 23:12:20,152 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-05 23:12:20,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:12:20 BoogieIcfgContainer [2020-10-05 23:12:20,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 23:12:20,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 23:12:20,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 23:12:20,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 23:12:20,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 11:12:18" (1/3) ... [2020-10-05 23:12:20,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@471d50f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:12:20, skipping insertion in model container [2020-10-05 23:12:20,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:19" (2/3) ... [2020-10-05 23:12:20,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@471d50f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:12:20, skipping insertion in model container [2020-10-05 23:12:20,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:12:20" (3/3) ... [2020-10-05 23:12:20,162 INFO L109 eAbstractionObserver]: Analyzing ICFG lamport.i [2020-10-05 23:12:20,174 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 23:12:20,174 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-05 23:12:20,182 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-05 23:12:20,183 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 23:12:20,214 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,214 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,214 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,215 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,216 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,216 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,218 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,218 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,219 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,219 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,220 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,220 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,225 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,225 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,225 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,226 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,231 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,231 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,231 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,231 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,253 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-05 23:12:20,273 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:12:20,274 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:12:20,274 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:12:20,274 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:12:20,274 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:12:20,275 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:12:20,275 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:12:20,275 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:12:20,294 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 103 transitions, 228 flow [2020-10-05 23:12:20,296 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 103 transitions, 228 flow [2020-10-05 23:12:20,349 INFO L129 PetriNetUnfolder]: 25/103 cut-off events. [2020-10-05 23:12:20,349 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-05 23:12:20,360 INFO L80 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 103 events. 25/103 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 205 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 79. Up to 5 conditions per place. [2020-10-05 23:12:20,364 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 103 transitions, 228 flow [2020-10-05 23:12:20,395 INFO L129 PetriNetUnfolder]: 25/103 cut-off events. [2020-10-05 23:12:20,395 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-05 23:12:20,397 INFO L80 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 103 events. 25/103 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 205 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 79. Up to 5 conditions per place. [2020-10-05 23:12:20,403 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3196 [2020-10-05 23:12:20,404 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:12:21,260 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-10-05 23:12:21,348 INFO L206 etLargeBlockEncoding]: Checked pairs total: 11328 [2020-10-05 23:12:21,348 INFO L214 etLargeBlockEncoding]: Total number of compositions: 38 [2020-10-05 23:12:21,352 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 65 transitions, 152 flow [2020-10-05 23:12:21,410 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 797 states. [2020-10-05 23:12:21,413 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states. [2020-10-05 23:12:21,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-05 23:12:21,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:12:21,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-05 23:12:21,422 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:12:21,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:12:21,429 INFO L82 PathProgramCache]: Analyzing trace with hash 13833324, now seen corresponding path program 1 times [2020-10-05 23:12:21,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:12:21,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99992904] [2020-10-05 23:12:21,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:12:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:12:21,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:12:21,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99992904] [2020-10-05 23:12:21,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:12:21,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:12:21,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405363494] [2020-10-05 23:12:21,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-05 23:12:21,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:12:21,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-05 23:12:21,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-05 23:12:21,645 INFO L87 Difference]: Start difference. First operand 797 states. Second operand 2 states. [2020-10-05 23:12:21,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:12:21,698 INFO L93 Difference]: Finished difference Result 797 states and 2314 transitions. [2020-10-05 23:12:21,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-05 23:12:21,700 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-10-05 23:12:21,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:12:21,728 INFO L225 Difference]: With dead ends: 797 [2020-10-05 23:12:21,728 INFO L226 Difference]: Without dead ends: 758 [2020-10-05 23:12:21,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-05 23:12:21,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2020-10-05 23:12:21,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 758. [2020-10-05 23:12:21,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 758 states. [2020-10-05 23:12:21,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 2229 transitions. [2020-10-05 23:12:21,841 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 2229 transitions. Word has length 4 [2020-10-05 23:12:21,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:12:21,842 INFO L479 AbstractCegarLoop]: Abstraction has 758 states and 2229 transitions. [2020-10-05 23:12:21,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-05 23:12:21,842 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 2229 transitions. [2020-10-05 23:12:21,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 23:12:21,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:12:21,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:12:21,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 23:12:21,844 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:12:21,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:12:21,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1620095088, now seen corresponding path program 1 times [2020-10-05 23:12:21,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:12:21,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112684062] [2020-10-05 23:12:21,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:12:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:12:21,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:12:21,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112684062] [2020-10-05 23:12:21,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:12:21,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:12:21,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978974000] [2020-10-05 23:12:21,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:12:21,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:12:21,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:12:21,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:12:21,956 INFO L87 Difference]: Start difference. First operand 758 states and 2229 transitions. Second operand 3 states. [2020-10-05 23:12:21,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:12:21,992 INFO L93 Difference]: Finished difference Result 761 states and 2195 transitions. [2020-10-05 23:12:21,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:12:21,993 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-05 23:12:21,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:12:22,018 INFO L225 Difference]: With dead ends: 761 [2020-10-05 23:12:22,019 INFO L226 Difference]: Without dead ends: 635 [2020-10-05 23:12:22,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:12:22,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2020-10-05 23:12:22,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 617. [2020-10-05 23:12:22,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-10-05 23:12:22,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 1829 transitions. [2020-10-05 23:12:22,053 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 1829 transitions. Word has length 10 [2020-10-05 23:12:22,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:12:22,053 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 1829 transitions. [2020-10-05 23:12:22,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:12:22,054 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 1829 transitions. [2020-10-05 23:12:22,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:12:22,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:12:22,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:12:22,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 23:12:22,057 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:12:22,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:12:22,057 INFO L82 PathProgramCache]: Analyzing trace with hash -563128116, now seen corresponding path program 1 times [2020-10-05 23:12:22,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:12:22,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865958144] [2020-10-05 23:12:22,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:12:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:12:22,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:12:22,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865958144] [2020-10-05 23:12:22,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:12:22,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:12:22,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233931390] [2020-10-05 23:12:22,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:12:22,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:12:22,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:12:22,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:12:22,141 INFO L87 Difference]: Start difference. First operand 617 states and 1829 transitions. Second operand 3 states. [2020-10-05 23:12:22,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:12:22,165 INFO L93 Difference]: Finished difference Result 596 states and 1750 transitions. [2020-10-05 23:12:22,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:12:22,166 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-05 23:12:22,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:12:22,169 INFO L225 Difference]: With dead ends: 596 [2020-10-05 23:12:22,170 INFO L226 Difference]: Without dead ends: 464 [2020-10-05 23:12:22,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:12:22,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-10-05 23:12:22,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2020-10-05 23:12:22,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-10-05 23:12:22,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1401 transitions. [2020-10-05 23:12:22,187 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1401 transitions. Word has length 12 [2020-10-05 23:12:22,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:12:22,189 INFO L479 AbstractCegarLoop]: Abstraction has 464 states and 1401 transitions. [2020-10-05 23:12:22,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:12:22,189 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1401 transitions. [2020-10-05 23:12:22,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-05 23:12:22,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:12:22,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:12:22,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 23:12:22,193 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:12:22,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:12:22,194 INFO L82 PathProgramCache]: Analyzing trace with hash -561689065, now seen corresponding path program 1 times [2020-10-05 23:12:22,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:12:22,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807075329] [2020-10-05 23:12:22,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:12:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:12:22,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:12:22,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807075329] [2020-10-05 23:12:22,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:12:22,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:12:22,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102534788] [2020-10-05 23:12:22,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:12:22,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:12:22,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:12:22,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:12:22,233 INFO L87 Difference]: Start difference. First operand 464 states and 1401 transitions. Second operand 3 states. [2020-10-05 23:12:22,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:12:22,259 INFO L93 Difference]: Finished difference Result 848 states and 2563 transitions. [2020-10-05 23:12:22,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:12:22,260 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-05 23:12:22,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:12:22,266 INFO L225 Difference]: With dead ends: 848 [2020-10-05 23:12:22,267 INFO L226 Difference]: Without dead ends: 848 [2020-10-05 23:12:22,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:12:22,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-10-05 23:12:22,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 542. [2020-10-05 23:12:22,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 542 states. [2020-10-05 23:12:22,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1652 transitions. [2020-10-05 23:12:22,291 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1652 transitions. Word has length 19 [2020-10-05 23:12:22,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:12:22,292 INFO L479 AbstractCegarLoop]: Abstraction has 542 states and 1652 transitions. [2020-10-05 23:12:22,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:12:22,292 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1652 transitions. [2020-10-05 23:12:22,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-05 23:12:22,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:12:22,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:12:22,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 23:12:22,295 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:12:22,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:12:22,295 INFO L82 PathProgramCache]: Analyzing trace with hash 417736639, now seen corresponding path program 1 times [2020-10-05 23:12:22,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:12:22,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183886137] [2020-10-05 23:12:22,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:12:22,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:12:22,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:12:22,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183886137] [2020-10-05 23:12:22,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:12:22,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:12:22,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630836505] [2020-10-05 23:12:22,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:12:22,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:12:22,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:12:22,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:12:22,358 INFO L87 Difference]: Start difference. First operand 542 states and 1652 transitions. Second operand 3 states. [2020-10-05 23:12:22,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:12:22,421 INFO L93 Difference]: Finished difference Result 726 states and 2129 transitions. [2020-10-05 23:12:22,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:12:22,422 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-05 23:12:22,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:12:22,427 INFO L225 Difference]: With dead ends: 726 [2020-10-05 23:12:22,427 INFO L226 Difference]: Without dead ends: 576 [2020-10-05 23:12:22,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:12:22,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-10-05 23:12:22,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 530. [2020-10-05 23:12:22,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2020-10-05 23:12:22,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1543 transitions. [2020-10-05 23:12:22,448 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1543 transitions. Word has length 19 [2020-10-05 23:12:22,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:12:22,448 INFO L479 AbstractCegarLoop]: Abstraction has 530 states and 1543 transitions. [2020-10-05 23:12:22,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:12:22,448 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1543 transitions. [2020-10-05 23:12:22,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-05 23:12:22,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:12:22,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:12:22,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-05 23:12:22,451 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:12:22,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:12:22,451 INFO L82 PathProgramCache]: Analyzing trace with hash -691043045, now seen corresponding path program 2 times [2020-10-05 23:12:22,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:12:22,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132620717] [2020-10-05 23:12:22,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:12:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:12:22,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:12:22,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132620717] [2020-10-05 23:12:22,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:12:22,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:12:22,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077206661] [2020-10-05 23:12:22,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:12:22,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:12:22,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:12:22,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:12:22,493 INFO L87 Difference]: Start difference. First operand 530 states and 1543 transitions. Second operand 3 states. [2020-10-05 23:12:22,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:12:22,513 INFO L93 Difference]: Finished difference Result 748 states and 2068 transitions. [2020-10-05 23:12:22,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:12:22,513 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-05 23:12:22,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:12:22,519 INFO L225 Difference]: With dead ends: 748 [2020-10-05 23:12:22,519 INFO L226 Difference]: Without dead ends: 742 [2020-10-05 23:12:22,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:12:22,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2020-10-05 23:12:22,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 556. [2020-10-05 23:12:22,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-10-05 23:12:22,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1586 transitions. [2020-10-05 23:12:22,542 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1586 transitions. Word has length 19 [2020-10-05 23:12:22,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:12:22,543 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 1586 transitions. [2020-10-05 23:12:22,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:12:22,543 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1586 transitions. [2020-10-05 23:12:22,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-05 23:12:22,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:12:22,545 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:12:22,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-05 23:12:22,546 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:12:22,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:12:22,546 INFO L82 PathProgramCache]: Analyzing trace with hash 962803841, now seen corresponding path program 2 times [2020-10-05 23:12:22,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:12:22,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558122201] [2020-10-05 23:12:22,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:12:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:12:22,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:12:22,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558122201] [2020-10-05 23:12:22,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:12:22,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:12:22,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542971176] [2020-10-05 23:12:22,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:12:22,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:12:22,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:12:22,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:12:22,605 INFO L87 Difference]: Start difference. First operand 556 states and 1586 transitions. Second operand 3 states. [2020-10-05 23:12:22,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:12:22,650 INFO L93 Difference]: Finished difference Result 498 states and 1291 transitions. [2020-10-05 23:12:22,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:12:22,651 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-05 23:12:22,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:12:22,654 INFO L225 Difference]: With dead ends: 498 [2020-10-05 23:12:22,654 INFO L226 Difference]: Without dead ends: 316 [2020-10-05 23:12:22,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:12:22,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-05 23:12:22,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 274. [2020-10-05 23:12:22,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-05 23:12:22,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 645 transitions. [2020-10-05 23:12:22,666 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 645 transitions. Word has length 19 [2020-10-05 23:12:22,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:12:22,666 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 645 transitions. [2020-10-05 23:12:22,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:12:22,666 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 645 transitions. [2020-10-05 23:12:22,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-05 23:12:22,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:12:22,668 INFO L422 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] [2020-10-05 23:12:22,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-05 23:12:22,668 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:12:22,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:12:22,669 INFO L82 PathProgramCache]: Analyzing trace with hash -95552411, now seen corresponding path program 1 times [2020-10-05 23:12:22,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:12:22,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935457986] [2020-10-05 23:12:22,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:12:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:12:22,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:12:22,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935457986] [2020-10-05 23:12:22,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:12:22,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:12:22,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771056540] [2020-10-05 23:12:22,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:12:22,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:12:22,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:12:22,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:12:22,742 INFO L87 Difference]: Start difference. First operand 274 states and 645 transitions. Second operand 3 states. [2020-10-05 23:12:22,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:12:22,755 INFO L93 Difference]: Finished difference Result 274 states and 637 transitions. [2020-10-05 23:12:22,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:12:22,756 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-05 23:12:22,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:12:22,758 INFO L225 Difference]: With dead ends: 274 [2020-10-05 23:12:22,758 INFO L226 Difference]: Without dead ends: 246 [2020-10-05 23:12:22,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:12:22,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-05 23:12:22,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2020-10-05 23:12:22,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-10-05 23:12:22,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 575 transitions. [2020-10-05 23:12:22,766 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 575 transitions. Word has length 22 [2020-10-05 23:12:22,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:12:22,767 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 575 transitions. [2020-10-05 23:12:22,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:12:22,767 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 575 transitions. [2020-10-05 23:12:22,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-05 23:12:22,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:12:22,768 INFO L422 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] [2020-10-05 23:12:22,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-05 23:12:22,769 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:12:22,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:12:22,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1640844081, now seen corresponding path program 1 times [2020-10-05 23:12:22,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:12:22,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076923863] [2020-10-05 23:12:22,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:12:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:12:22,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:12:22,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076923863] [2020-10-05 23:12:22,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:12:22,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:12:22,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841931857] [2020-10-05 23:12:22,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:12:22,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:12:22,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:12:22,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:12:22,816 INFO L87 Difference]: Start difference. First operand 246 states and 575 transitions. Second operand 3 states. [2020-10-05 23:12:22,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:12:22,825 INFO L93 Difference]: Finished difference Result 158 states and 401 transitions. [2020-10-05 23:12:22,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:12:22,825 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-05 23:12:22,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:12:22,826 INFO L225 Difference]: With dead ends: 158 [2020-10-05 23:12:22,826 INFO L226 Difference]: Without dead ends: 0 [2020-10-05 23:12:22,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:12:22,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-05 23:12:22,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-05 23:12:22,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-05 23:12:22,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-05 23:12:22,827 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-10-05 23:12:22,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:12:22,827 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-05 23:12:22,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:12:22,828 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-05 23:12:22,828 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-05 23:12:22,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-05 23:12:22,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 11:12:22 BasicIcfg [2020-10-05 23:12:22,833 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 23:12:22,835 INFO L168 Benchmark]: Toolchain (without parser) took 3899.39 ms. Allocated memory was 138.9 MB in the beginning and 249.0 MB in the end (delta: 110.1 MB). Free memory was 100.4 MB in the beginning and 97.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 112.8 MB. Max. memory is 7.1 GB. [2020-10-05 23:12:22,836 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-05 23:12:22,837 INFO L168 Benchmark]: CACSL2BoogieTranslator took 707.13 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.2 MB in the beginning and 159.8 MB in the end (delta: -59.6 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-10-05 23:12:22,838 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.28 ms. Allocated memory is still 201.9 MB. Free memory was 159.8 MB in the beginning and 157.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-05 23:12:22,844 INFO L168 Benchmark]: Boogie Preprocessor took 35.26 ms. Allocated memory is still 201.9 MB. Free memory was 157.8 MB in the beginning and 155.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-05 23:12:22,845 INFO L168 Benchmark]: RCFGBuilder took 426.40 ms. Allocated memory is still 201.9 MB. Free memory was 155.7 MB in the beginning and 131.4 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-10-05 23:12:22,847 INFO L168 Benchmark]: TraceAbstraction took 2677.38 ms. Allocated memory was 201.9 MB in the beginning and 249.0 MB in the end (delta: 47.2 MB). Free memory was 130.8 MB in the beginning and 97.7 MB in the end (delta: 33.1 MB). Peak memory consumption was 80.3 MB. Max. memory is 7.1 GB. [2020-10-05 23:12:22,859 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 707.13 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.2 MB in the beginning and 159.8 MB in the end (delta: -59.6 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.28 ms. Allocated memory is still 201.9 MB. Free memory was 159.8 MB in the beginning and 157.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.26 ms. Allocated memory is still 201.9 MB. Free memory was 157.8 MB in the beginning and 155.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 426.40 ms. Allocated memory is still 201.9 MB. Free memory was 155.7 MB in the beginning and 131.4 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2677.38 ms. Allocated memory was 201.9 MB in the beginning and 249.0 MB in the end (delta: 47.2 MB). Free memory was 130.8 MB in the beginning and 97.7 MB in the end (delta: 33.1 MB). Peak memory consumption was 80.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.0s, 84 ProgramPointsBefore, 54 ProgramPointsAfterwards, 103 TransitionsBefore, 65 TransitionsAfterwards, 3196 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 1143 VarBasedMoverChecksPositive, 48 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 11328 CheckedPairsTotal, 38 TotalNumberOfCompositions - PositiveResult [Line: 723]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 697]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 78 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.1s, HoareTripleCheckerStatistics: 573 SDtfs, 230 SDslu, 283 SDs, 0 SdLazy, 89 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=797occurred 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, 9 MinimizatonAttempts, 598 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 137 ConstructedInterpolants, 0 QuantifiedInterpolants, 4067 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...