/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-atomic/peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 10:51:26,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 10:51:26,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 10:51:26,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 10:51:26,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 10:51:26,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 10:51:26,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 10:51:26,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 10:51:26,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 10:51:26,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 10:51:26,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 10:51:26,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 10:51:26,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 10:51:26,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 10:51:26,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 10:51:26,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 10:51:26,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 10:51:26,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 10:51:26,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 10:51:26,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 10:51:26,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 10:51:26,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 10:51:26,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 10:51:26,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 10:51:26,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 10:51:26,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 10:51:26,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 10:51:26,498 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 10:51:26,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 10:51:26,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 10:51:26,499 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 10:51:26,500 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 10:51:26,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 10:51:26,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 10:51:26,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 10:51:26,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 10:51:26,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 10:51:26,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 10:51:26,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 10:51:26,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 10:51:26,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 10:51:26,512 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-16 10:51:26,554 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 10:51:26,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 10:51:26,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 10:51:26,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 10:51:26,558 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 10:51:26,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 10:51:26,558 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 10:51:26,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 10:51:26,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 10:51:26,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 10:51:26,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 10:51:26,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 10:51:26,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 10:51:26,561 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 10:51:26,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 10:51:26,561 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 10:51:26,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 10:51:26,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 10:51:26,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 10:51:26,562 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 10:51:26,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 10:51:26,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 10:51:26,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 10:51:26,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 10:51:26,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 10:51:26,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 10:51:26,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 10:51:26,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 10:51:26,564 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 10:51:26,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 10:51:26,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 10:51:26,895 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 10:51:26,899 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 10:51:26,901 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 10:51:26,901 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 10:51:26,902 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/peterson.i [2020-10-16 10:51:26,972 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/05e7d0664/b655b284d6de4a678198dba32f371664/FLAG474c2468d [2020-10-16 10:51:27,549 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 10:51:27,550 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-atomic/peterson.i [2020-10-16 10:51:27,572 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/05e7d0664/b655b284d6de4a678198dba32f371664/FLAG474c2468d [2020-10-16 10:51:27,841 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/05e7d0664/b655b284d6de4a678198dba32f371664 [2020-10-16 10:51:27,852 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 10:51:27,854 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 10:51:27,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 10:51:27,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 10:51:27,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 10:51:27,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 10:51:27" (1/1) ... [2020-10-16 10:51:27,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2261d3a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:27, skipping insertion in model container [2020-10-16 10:51:27,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 10:51:27" (1/1) ... [2020-10-16 10:51:27,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 10:51:27,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 10:51:28,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 10:51:28,418 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 10:51:28,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 10:51:28,549 INFO L208 MainTranslator]: Completed translation [2020-10-16 10:51:28,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:28 WrapperNode [2020-10-16 10:51:28,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 10:51:28,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 10:51:28,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 10:51:28,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 10:51:28,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:28" (1/1) ... [2020-10-16 10:51:28,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:28" (1/1) ... [2020-10-16 10:51:28,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 10:51:28,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 10:51:28,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 10:51:28,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 10:51:28,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:28" (1/1) ... [2020-10-16 10:51:28,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:28" (1/1) ... [2020-10-16 10:51:28,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:28" (1/1) ... [2020-10-16 10:51:28,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:28" (1/1) ... [2020-10-16 10:51:28,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:28" (1/1) ... [2020-10-16 10:51:28,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:28" (1/1) ... [2020-10-16 10:51:28,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:28" (1/1) ... [2020-10-16 10:51:28,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 10:51:28,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 10:51:28,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 10:51:28,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 10:51:28,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 10:51:28,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 10:51:28,723 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-16 10:51:28,723 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-16 10:51:28,724 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 10:51:28,724 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 10:51:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 10:51:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 10:51:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 10:51:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 10:51:28,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 10:51:28,728 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 10:51:29,078 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 10:51:29,079 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-16 10:51:29,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 10:51:29 BoogieIcfgContainer [2020-10-16 10:51:29,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 10:51:29,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 10:51:29,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 10:51:29,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 10:51:29,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 10:51:27" (1/3) ... [2020-10-16 10:51:29,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1813a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 10:51:29, skipping insertion in model container [2020-10-16 10:51:29,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:28" (2/3) ... [2020-10-16 10:51:29,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1813a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 10:51:29, skipping insertion in model container [2020-10-16 10:51:29,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 10:51:29" (3/3) ... [2020-10-16 10:51:29,091 INFO L111 eAbstractionObserver]: Analyzing ICFG peterson.i [2020-10-16 10:51:29,104 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 10:51:29,104 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 10:51:29,115 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 10:51:29,122 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 10:51:29,152 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,152 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,152 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,152 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,154 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,154 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,155 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,155 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,155 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,156 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,157 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,157 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,161 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,162 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,162 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,162 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,175 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,176 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,176 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,176 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:29,185 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-10-16 10:51:29,199 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 10:51:29,218 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 10:51:29,218 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 10:51:29,218 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 10:51:29,218 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 10:51:29,218 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 10:51:29,219 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 10:51:29,219 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 10:51:29,219 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 10:51:29,232 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 10:51:29,234 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 62 transitions, 146 flow [2020-10-16 10:51:29,236 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 62 transitions, 146 flow [2020-10-16 10:51:29,239 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 62 transitions, 146 flow [2020-10-16 10:51:29,277 INFO L129 PetriNetUnfolder]: 7/62 cut-off events. [2020-10-16 10:51:29,278 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 10:51:29,284 INFO L80 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 62 events. 7/62 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 39. Up to 3 conditions per place. [2020-10-16 10:51:29,287 INFO L117 LiptonReduction]: Number of co-enabled transitions 756 [2020-10-16 10:51:30,124 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-10-16 10:51:30,183 INFO L132 LiptonReduction]: Checked pairs total: 2346 [2020-10-16 10:51:30,183 INFO L134 LiptonReduction]: Total number of compositions: 34 [2020-10-16 10:51:30,190 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 34 transitions, 90 flow [2020-10-16 10:51:30,212 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 197 states. [2020-10-16 10:51:30,215 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2020-10-16 10:51:30,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-16 10:51:30,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:51:30,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 10:51:30,224 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:51:30,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:51:30,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1379963486, now seen corresponding path program 1 times [2020-10-16 10:51:30,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:51:30,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722979268] [2020-10-16 10:51:30,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:51:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:51:30,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:51:30,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722979268] [2020-10-16 10:51:30,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:51:30,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 10:51:30,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552589740] [2020-10-16 10:51:30,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 10:51:30,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:51:30,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 10:51:30,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 10:51:30,445 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 2 states. [2020-10-16 10:51:30,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:51:30,486 INFO L93 Difference]: Finished difference Result 197 states and 454 transitions. [2020-10-16 10:51:30,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 10:51:30,488 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-16 10:51:30,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:51:30,517 INFO L225 Difference]: With dead ends: 197 [2020-10-16 10:51:30,518 INFO L226 Difference]: Without dead ends: 174 [2020-10-16 10:51:30,519 INFO L677 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 [2020-10-16 10:51:30,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-16 10:51:30,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-10-16 10:51:30,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-16 10:51:30,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 406 transitions. [2020-10-16 10:51:30,591 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 406 transitions. Word has length 6 [2020-10-16 10:51:30,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:51:30,592 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 406 transitions. [2020-10-16 10:51:30,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 10:51:30,592 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 406 transitions. [2020-10-16 10:51:30,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-16 10:51:30,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:51:30,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:51:30,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 10:51:30,594 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:51:30,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:51:30,594 INFO L82 PathProgramCache]: Analyzing trace with hash 170777462, now seen corresponding path program 1 times [2020-10-16 10:51:30,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:51:30,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602216295] [2020-10-16 10:51:30,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:51:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:51:30,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:51:30,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602216295] [2020-10-16 10:51:30,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:51:30,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 10:51:30,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146695883] [2020-10-16 10:51:30,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 10:51:30,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:51:30,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 10:51:30,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:51:30,663 INFO L87 Difference]: Start difference. First operand 174 states and 406 transitions. Second operand 3 states. [2020-10-16 10:51:30,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:51:30,696 INFO L93 Difference]: Finished difference Result 189 states and 416 transitions. [2020-10-16 10:51:30,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 10:51:30,697 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-16 10:51:30,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:51:30,699 INFO L225 Difference]: With dead ends: 189 [2020-10-16 10:51:30,699 INFO L226 Difference]: Without dead ends: 154 [2020-10-16 10:51:30,700 INFO L677 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 [2020-10-16 10:51:30,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-16 10:51:30,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 140. [2020-10-16 10:51:30,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-16 10:51:30,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 317 transitions. [2020-10-16 10:51:30,714 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 317 transitions. Word has length 7 [2020-10-16 10:51:30,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:51:30,715 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 317 transitions. [2020-10-16 10:51:30,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 10:51:30,715 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 317 transitions. [2020-10-16 10:51:30,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 10:51:30,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:51:30,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:51:30,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 10:51:30,716 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:51:30,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:51:30,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1618546552, now seen corresponding path program 1 times [2020-10-16 10:51:30,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:51:30,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242732851] [2020-10-16 10:51:30,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:51:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:51:30,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:51:30,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242732851] [2020-10-16 10:51:30,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:51:30,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 10:51:30,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342437017] [2020-10-16 10:51:30,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 10:51:30,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:51:30,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 10:51:30,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:51:30,778 INFO L87 Difference]: Start difference. First operand 140 states and 317 transitions. Second operand 3 states. [2020-10-16 10:51:30,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:51:30,796 INFO L93 Difference]: Finished difference Result 135 states and 290 transitions. [2020-10-16 10:51:30,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 10:51:30,797 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-16 10:51:30,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:51:30,798 INFO L225 Difference]: With dead ends: 135 [2020-10-16 10:51:30,799 INFO L226 Difference]: Without dead ends: 96 [2020-10-16 10:51:30,799 INFO L677 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 [2020-10-16 10:51:30,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-16 10:51:30,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-16 10:51:30,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-16 10:51:30,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 204 transitions. [2020-10-16 10:51:30,809 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 204 transitions. Word has length 9 [2020-10-16 10:51:30,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:51:30,810 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 204 transitions. [2020-10-16 10:51:30,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 10:51:30,810 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 204 transitions. [2020-10-16 10:51:30,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:51:30,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:51:30,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:51:30,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 10:51:30,812 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:51:30,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:51:30,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1612301587, now seen corresponding path program 1 times [2020-10-16 10:51:30,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:51:30,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705558706] [2020-10-16 10:51:30,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:51:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:51:30,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:51:30,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705558706] [2020-10-16 10:51:30,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:51:30,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 10:51:30,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681336552] [2020-10-16 10:51:30,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 10:51:30,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:51:30,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 10:51:30,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 10:51:30,867 INFO L87 Difference]: Start difference. First operand 96 states and 204 transitions. Second operand 4 states. [2020-10-16 10:51:30,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:51:30,897 INFO L93 Difference]: Finished difference Result 106 states and 227 transitions. [2020-10-16 10:51:30,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 10:51:30,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-16 10:51:30,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:51:30,899 INFO L225 Difference]: With dead ends: 106 [2020-10-16 10:51:30,899 INFO L226 Difference]: Without dead ends: 82 [2020-10-16 10:51:30,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 10:51:30,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-16 10:51:30,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-10-16 10:51:30,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-16 10:51:30,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 160 transitions. [2020-10-16 10:51:30,907 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 160 transitions. Word has length 13 [2020-10-16 10:51:30,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:51:30,907 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 160 transitions. [2020-10-16 10:51:30,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 10:51:30,908 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 160 transitions. [2020-10-16 10:51:30,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:51:30,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:51:30,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:51:30,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 10:51:30,909 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:51:30,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:51:30,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1894970123, now seen corresponding path program 2 times [2020-10-16 10:51:30,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:51:30,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94208081] [2020-10-16 10:51:30,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:51:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:51:30,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:51:30,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94208081] [2020-10-16 10:51:30,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:51:30,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 10:51:30,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894243060] [2020-10-16 10:51:30,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 10:51:30,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:51:30,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 10:51:30,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 10:51:30,952 INFO L87 Difference]: Start difference. First operand 82 states and 160 transitions. Second operand 4 states. [2020-10-16 10:51:30,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:51:30,965 INFO L93 Difference]: Finished difference Result 36 states and 77 transitions. [2020-10-16 10:51:30,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 10:51:30,966 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-16 10:51:30,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:51:30,967 INFO L225 Difference]: With dead ends: 36 [2020-10-16 10:51:30,967 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 10:51:30,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 10:51:30,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 10:51:30,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 10:51:30,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 10:51:30,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 10:51:30,968 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-10-16 10:51:30,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:51:30,969 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 10:51:30,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 10:51:30,969 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 10:51:30,969 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 10:51:30,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 10:51:30,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 10:51:30 BasicIcfg [2020-10-16 10:51:30,974 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 10:51:30,976 INFO L168 Benchmark]: Toolchain (without parser) took 3122.28 ms. Allocated memory was 144.7 MB in the beginning and 231.7 MB in the end (delta: 87.0 MB). Free memory was 99.7 MB in the beginning and 80.7 MB in the end (delta: 19.0 MB). Peak memory consumption was 106.1 MB. Max. memory is 7.1 GB. [2020-10-16 10:51:30,977 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 144.7 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 10:51:30,978 INFO L168 Benchmark]: CACSL2BoogieTranslator took 695.70 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 99.5 MB in the beginning and 159.7 MB in the end (delta: -60.2 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-10-16 10:51:30,979 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.64 ms. Allocated memory is still 201.9 MB. Free memory was 159.7 MB in the beginning and 157.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-10-16 10:51:30,979 INFO L168 Benchmark]: Boogie Preprocessor took 33.32 ms. Allocated memory is still 201.9 MB. Free memory was 157.5 MB in the beginning and 156.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-16 10:51:30,980 INFO L168 Benchmark]: RCFGBuilder took 419.08 ms. Allocated memory is still 201.9 MB. Free memory was 156.1 MB in the beginning and 135.4 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-10-16 10:51:30,981 INFO L168 Benchmark]: TraceAbstraction took 1891.20 ms. Allocated memory was 201.9 MB in the beginning and 231.7 MB in the end (delta: 29.9 MB). Free memory was 135.4 MB in the beginning and 80.7 MB in the end (delta: 54.7 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2020-10-16 10:51:30,986 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 144.7 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 695.70 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 99.5 MB in the beginning and 159.7 MB in the end (delta: -60.2 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 76.64 ms. Allocated memory is still 201.9 MB. Free memory was 159.7 MB in the beginning and 157.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.32 ms. Allocated memory is still 201.9 MB. Free memory was 157.5 MB in the beginning and 156.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 419.08 ms. Allocated memory is still 201.9 MB. Free memory was 156.1 MB in the beginning and 135.4 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1891.20 ms. Allocated memory was 201.9 MB in the beginning and 231.7 MB in the end (delta: 29.9 MB). Free memory was 135.4 MB in the beginning and 80.7 MB in the end (delta: 54.7 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 488 VarBasedMoverChecksPositive, 34 VarBasedMoverChecksNegative, 14 SemBasedMoverChecksPositive, 20 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 179 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.9s, 61 PlacesBefore, 34 PlacesAfterwards, 62 TransitionsBefore, 34 TransitionsAfterwards, 756 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 34 TotalNumberOfCompositions, 2346 MoverChecksTotal - PositiveResult [Line: 690]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 681]: 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, 55 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 139 SDtfs, 60 SDslu, 60 SDs, 0 SdLazy, 33 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=197occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 14 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 801 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...