/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-atomic/peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:30:45,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:30:45,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:30:45,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:30:45,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:30:45,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:30:45,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:30:45,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:30:45,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:30:45,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:30:45,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:30:45,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:30:45,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:30:45,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:30:45,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:30:45,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:30:45,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:30:45,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:30:45,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:30:45,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:30:45,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:30:45,367 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:30:45,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:30:45,370 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:30:45,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 12:30:45,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 12:30:45,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 12:30:45,384 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 12:30:45,385 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 12:30:45,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 12:30:45,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:30:45,387 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:30:45,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:30:45,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:30:45,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:30:45,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:30:45,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:30:45,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:30:45,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:30:45,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:30:45,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:30:45,393 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 12:30:45,415 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:30:45,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:30:45,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:30:45,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:30:45,417 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:30:45,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:30:45,418 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:30:45,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:30:45,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:30:45,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:30:45,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:30:45,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:30:45,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:30:45,419 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:30:45,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:30:45,419 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:30:45,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:30:45,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:30:45,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:30:45,425 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:30:45,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:30:45,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:30:45,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:30:45,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:30:45,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:30:45,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:30:45,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:30:45,427 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 12:30:45,427 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:30:45,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:30:45,427 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 12:30:45,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:30:45,733 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:30:45,738 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:30:45,739 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:30:45,740 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:30:45,742 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/peterson.i [2020-10-16 12:30:45,821 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1499ab004/e7161b3df3944b98a170f25b44c32bb0/FLAGad55016e8 [2020-10-16 12:30:46,326 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:30:46,327 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-atomic/peterson.i [2020-10-16 12:30:46,343 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1499ab004/e7161b3df3944b98a170f25b44c32bb0/FLAGad55016e8 [2020-10-16 12:30:46,624 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1499ab004/e7161b3df3944b98a170f25b44c32bb0 [2020-10-16 12:30:46,632 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:30:46,634 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:30:46,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:30:46,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:30:46,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:30:46,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:30:46" (1/1) ... [2020-10-16 12:30:46,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@489c61a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:46, skipping insertion in model container [2020-10-16 12:30:46,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:30:46" (1/1) ... [2020-10-16 12:30:46,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:30:46,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:30:47,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:30:47,211 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:30:47,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:30:47,327 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:30:47,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:47 WrapperNode [2020-10-16 12:30:47,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:30:47,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:30:47,329 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:30:47,329 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:30:47,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:47" (1/1) ... [2020-10-16 12:30:47,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:47" (1/1) ... [2020-10-16 12:30:47,372 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:30:47,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:30:47,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:30:47,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:30:47,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:47" (1/1) ... [2020-10-16 12:30:47,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:47" (1/1) ... [2020-10-16 12:30:47,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:47" (1/1) ... [2020-10-16 12:30:47,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:47" (1/1) ... [2020-10-16 12:30:47,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:47" (1/1) ... [2020-10-16 12:30:47,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:47" (1/1) ... [2020-10-16 12:30:47,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:47" (1/1) ... [2020-10-16 12:30:47,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:30:47,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:30:47,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:30:47,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:30:47,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:30:47,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 12:30:47,464 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-16 12:30:47,464 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-16 12:30:47,465 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 12:30:47,465 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 12:30:47,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:30:47,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:30:47,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:30:47,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:30:47,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:30:47,466 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 12:30:47,824 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:30:47,824 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-16 12:30:47,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:30:47 BoogieIcfgContainer [2020-10-16 12:30:47,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:30:47,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:30:47,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:30:47,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:30:47,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:30:46" (1/3) ... [2020-10-16 12:30:47,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab3f6b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:30:47, skipping insertion in model container [2020-10-16 12:30:47,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:47" (2/3) ... [2020-10-16 12:30:47,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab3f6b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:30:47, skipping insertion in model container [2020-10-16 12:30:47,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:30:47" (3/3) ... [2020-10-16 12:30:47,836 INFO L111 eAbstractionObserver]: Analyzing ICFG peterson.i [2020-10-16 12:30:47,847 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:30:47,847 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:30:47,854 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 12:30:47,855 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:30:47,881 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,881 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,881 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,882 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,883 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,883 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,884 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,884 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,884 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,885 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,885 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,886 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,890 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,890 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,890 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,891 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,896 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,896 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,897 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,897 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:47,915 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-10-16 12:30:47,927 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 12:30:47,948 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:30:47,949 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:30:47,949 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:30:47,949 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 12:30:47,949 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:30:47,949 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:30:47,950 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:30:47,950 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:30:47,963 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:30:47,964 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 62 transitions, 146 flow [2020-10-16 12:30:47,967 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 62 transitions, 146 flow [2020-10-16 12:30:47,969 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 62 transitions, 146 flow [2020-10-16 12:30:48,007 INFO L129 PetriNetUnfolder]: 7/62 cut-off events. [2020-10-16 12:30:48,007 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 12:30:48,013 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 12:30:48,015 INFO L117 LiptonReduction]: Number of co-enabled transitions 756 [2020-10-16 12:30:48,726 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-10-16 12:30:48,779 INFO L132 LiptonReduction]: Checked pairs total: 2556 [2020-10-16 12:30:48,779 INFO L134 LiptonReduction]: Total number of compositions: 33 [2020-10-16 12:30:48,785 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 35 transitions, 92 flow [2020-10-16 12:30:48,808 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 216 states. [2020-10-16 12:30:48,811 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2020-10-16 12:30:48,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-16 12:30:48,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:48,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 12:30:48,818 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 12:30:48,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:48,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1408592637, now seen corresponding path program 1 times [2020-10-16 12:30:48,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:48,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789308765] [2020-10-16 12:30:48,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:49,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:49,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789308765] [2020-10-16 12:30:49,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:30:49,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:30:49,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2033583884] [2020-10-16 12:30:49,006 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:49,009 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:49,020 INFO L258 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-10-16 12:30:49,020 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:49,024 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:49,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 12:30:49,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:49,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 12:30:49,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 12:30:49,044 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 2 states. [2020-10-16 12:30:49,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:49,062 INFO L93 Difference]: Finished difference Result 216 states and 500 transitions. [2020-10-16 12:30:49,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 12:30:49,064 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-16 12:30:49,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:49,078 INFO L225 Difference]: With dead ends: 216 [2020-10-16 12:30:49,079 INFO L226 Difference]: Without dead ends: 186 [2020-10-16 12:30:49,080 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 12:30:49,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-16 12:30:49,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-10-16 12:30:49,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-16 12:30:49,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 436 transitions. [2020-10-16 12:30:49,137 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 436 transitions. Word has length 6 [2020-10-16 12:30:49,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:49,137 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 436 transitions. [2020-10-16 12:30:49,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 12:30:49,138 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 436 transitions. [2020-10-16 12:30:49,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-16 12:30:49,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:49,139 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:49,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:30:49,139 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 12:30:49,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:49,140 INFO L82 PathProgramCache]: Analyzing trace with hash -716726219, now seen corresponding path program 1 times [2020-10-16 12:30:49,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:49,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332390963] [2020-10-16 12:30:49,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:49,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:49,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332390963] [2020-10-16 12:30:49,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:30:49,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:30:49,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1674405621] [2020-10-16 12:30:49,226 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:49,226 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:49,227 INFO L258 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-10-16 12:30:49,227 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:49,228 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:49,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:30:49,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:49,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:30:49,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:30:49,230 INFO L87 Difference]: Start difference. First operand 186 states and 436 transitions. Second operand 3 states. [2020-10-16 12:30:49,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:49,262 INFO L93 Difference]: Finished difference Result 203 states and 449 transitions. [2020-10-16 12:30:49,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:30:49,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-16 12:30:49,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:49,265 INFO L225 Difference]: With dead ends: 203 [2020-10-16 12:30:49,265 INFO L226 Difference]: Without dead ends: 158 [2020-10-16 12:30:49,266 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 12:30:49,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-16 12:30:49,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 144. [2020-10-16 12:30:49,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-16 12:30:49,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 325 transitions. [2020-10-16 12:30:49,285 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 325 transitions. Word has length 7 [2020-10-16 12:30:49,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:49,285 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 325 transitions. [2020-10-16 12:30:49,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:30:49,286 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 325 transitions. [2020-10-16 12:30:49,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:30:49,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:49,287 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:49,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:30:49,287 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 12:30:49,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:49,288 INFO L82 PathProgramCache]: Analyzing trace with hash 188907911, now seen corresponding path program 1 times [2020-10-16 12:30:49,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:49,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763673079] [2020-10-16 12:30:49,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:49,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:49,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763673079] [2020-10-16 12:30:49,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:30:49,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:30:49,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1452530771] [2020-10-16 12:30:49,348 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:49,349 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:49,350 INFO L258 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-16 12:30:49,351 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:49,351 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:49,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:30:49,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:49,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:30:49,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:30:49,352 INFO L87 Difference]: Start difference. First operand 144 states and 325 transitions. Second operand 3 states. [2020-10-16 12:30:49,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:49,372 INFO L93 Difference]: Finished difference Result 135 states and 290 transitions. [2020-10-16 12:30:49,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:30:49,373 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-16 12:30:49,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:49,374 INFO L225 Difference]: With dead ends: 135 [2020-10-16 12:30:49,374 INFO L226 Difference]: Without dead ends: 96 [2020-10-16 12:30:49,375 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 12:30:49,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-16 12:30:49,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-16 12:30:49,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-16 12:30:49,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 204 transitions. [2020-10-16 12:30:49,385 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 204 transitions. Word has length 9 [2020-10-16 12:30:49,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:49,387 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 204 transitions. [2020-10-16 12:30:49,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:30:49,387 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 204 transitions. [2020-10-16 12:30:49,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:30:49,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:49,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:49,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 12:30:49,389 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 12:30:49,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:49,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1905704594, now seen corresponding path program 1 times [2020-10-16 12:30:49,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:49,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699500905] [2020-10-16 12:30:49,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:49,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:49,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699500905] [2020-10-16 12:30:49,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:30:49,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 12:30:49,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2107835067] [2020-10-16 12:30:49,504 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:49,506 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:49,514 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 36 transitions. [2020-10-16 12:30:49,514 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:49,577 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:49,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:30:49,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:49,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:30:49,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:30:49,580 INFO L87 Difference]: Start difference. First operand 96 states and 204 transitions. Second operand 4 states. [2020-10-16 12:30:49,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:49,625 INFO L93 Difference]: Finished difference Result 106 states and 227 transitions. [2020-10-16 12:30:49,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:30:49,628 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-16 12:30:49,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:49,631 INFO L225 Difference]: With dead ends: 106 [2020-10-16 12:30:49,631 INFO L226 Difference]: Without dead ends: 82 [2020-10-16 12:30:49,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 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 12:30:49,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-16 12:30:49,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-10-16 12:30:49,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-16 12:30:49,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 160 transitions. [2020-10-16 12:30:49,652 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 160 transitions. Word has length 13 [2020-10-16 12:30:49,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:49,653 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 160 transitions. [2020-10-16 12:30:49,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:30:49,653 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 160 transitions. [2020-10-16 12:30:49,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:30:49,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:49,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:49,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 12:30:49,659 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 12:30:49,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:49,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1601567116, now seen corresponding path program 2 times [2020-10-16 12:30:49,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:49,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107527172] [2020-10-16 12:30:49,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:49,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:49,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107527172] [2020-10-16 12:30:49,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:30:49,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 12:30:49,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [92623086] [2020-10-16 12:30:49,740 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:49,745 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:49,749 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 37 transitions. [2020-10-16 12:30:49,749 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:49,766 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:49,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:30:49,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:49,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:30:49,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:30:49,768 INFO L87 Difference]: Start difference. First operand 82 states and 160 transitions. Second operand 4 states. [2020-10-16 12:30:49,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:49,784 INFO L93 Difference]: Finished difference Result 36 states and 77 transitions. [2020-10-16 12:30:49,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:30:49,785 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-16 12:30:49,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:49,785 INFO L225 Difference]: With dead ends: 36 [2020-10-16 12:30:49,786 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 12:30:49,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 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 12:30:49,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 12:30:49,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 12:30:49,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 12:30:49,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 12:30:49,787 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-10-16 12:30:49,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:49,788 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 12:30:49,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:30:49,788 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 12:30:49,788 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 12:30:49,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 12:30:49,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:30:49 BasicIcfg [2020-10-16 12:30:49,795 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:30:49,799 INFO L168 Benchmark]: Toolchain (without parser) took 3163.39 ms. Allocated memory was 147.8 MB in the beginning and 234.9 MB in the end (delta: 87.0 MB). Free memory was 102.0 MB in the beginning and 87.5 MB in the end (delta: 14.5 MB). Peak memory consumption was 101.6 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:49,801 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 147.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 12:30:49,803 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.83 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 101.8 MB in the beginning and 165.8 MB in the end (delta: -64.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:49,809 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.23 ms. Allocated memory is still 205.0 MB. Free memory was 165.8 MB in the beginning and 163.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:49,810 INFO L168 Benchmark]: Boogie Preprocessor took 28.65 ms. Allocated memory is still 205.0 MB. Free memory was 163.7 MB in the beginning and 162.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:49,811 INFO L168 Benchmark]: RCFGBuilder took 424.82 ms. Allocated memory is still 205.0 MB. Free memory was 162.4 MB in the beginning and 142.2 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:49,812 INFO L168 Benchmark]: TraceAbstraction took 1967.56 ms. Allocated memory was 205.0 MB in the beginning and 234.9 MB in the end (delta: 29.9 MB). Free memory was 141.5 MB in the beginning and 87.5 MB in the end (delta: 54.0 MB). Peak memory consumption was 83.9 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:49,836 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 147.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 692.83 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 101.8 MB in the beginning and 165.8 MB in the end (delta: -64.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.23 ms. Allocated memory is still 205.0 MB. Free memory was 165.8 MB in the beginning and 163.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.65 ms. Allocated memory is still 205.0 MB. Free memory was 163.7 MB in the beginning and 162.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 424.82 ms. Allocated memory is still 205.0 MB. Free memory was 162.4 MB in the beginning and 142.2 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1967.56 ms. Allocated memory was 205.0 MB in the beginning and 234.9 MB in the end (delta: 29.9 MB). Free memory was 141.5 MB in the beginning and 87.5 MB in the end (delta: 54.0 MB). Peak memory consumption was 83.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 388 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 133 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.8s, 61 PlacesBefore, 35 PlacesAfterwards, 62 TransitionsBefore, 35 TransitionsAfterwards, 756 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 10 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 33 TotalNumberOfCompositions, 2556 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: 1.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 141 SDtfs, 58 SDslu, 60 SDs, 0 SdLazy, 35 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred 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, 0.2s 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...