/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 0.1.25-1d1d2b5 [2020-10-21 23:43:03,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 23:43:03,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 23:43:03,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 23:43:03,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 23:43:03,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 23:43:03,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 23:43:03,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 23:43:03,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 23:43:03,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 23:43:03,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 23:43:03,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 23:43:03,279 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 23:43:03,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 23:43:03,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 23:43:03,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 23:43:03,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 23:43:03,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 23:43:03,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 23:43:03,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 23:43:03,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 23:43:03,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 23:43:03,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 23:43:03,300 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 23:43:03,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-21 23:43:03,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 23:43:03,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 23:43:03,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 23:43:03,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 23:43:03,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 23:43:03,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 23:43:03,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 23:43:03,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 23:43:03,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 23:43:03,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 23:43:03,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 23:43:03,321 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-21 23:43:03,342 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 23:43:03,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 23:43:03,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 23:43:03,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 23:43:03,344 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 23:43:03,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 23:43:03,344 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 23:43:03,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 23:43:03,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 23:43:03,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 23:43:03,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 23:43:03,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 23:43:03,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 23:43:03,346 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 23:43:03,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 23:43:03,346 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 23:43:03,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 23:43:03,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 23:43:03,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 23:43:03,347 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 23:43:03,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 23:43:03,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 23:43:03,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 23:43:03,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-21 23:43:03,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 23:43:03,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 23:43:03,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 23:43:03,348 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-21 23:43:03,348 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-21 23:43:03,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 23:43:03,349 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-21 23:43:03,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 23:43:03,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 23:43:03,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 23:43:03,653 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 23:43:03,653 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 23:43:03,654 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/peterson.i [2020-10-21 23:43:03,714 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/056aaf75f/c948f427a4d3433699a5dd30722ecfd5/FLAG41afd4147 [2020-10-21 23:43:04,182 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 23:43:04,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i [2020-10-21 23:43:04,196 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/056aaf75f/c948f427a4d3433699a5dd30722ecfd5/FLAG41afd4147 [2020-10-21 23:43:04,527 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/056aaf75f/c948f427a4d3433699a5dd30722ecfd5 [2020-10-21 23:43:04,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 23:43:04,542 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 23:43:04,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 23:43:04,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 23:43:04,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 23:43:04,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 11:43:04" (1/1) ... [2020-10-21 23:43:04,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25adfd6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:43:04, skipping insertion in model container [2020-10-21 23:43:04,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 11:43:04" (1/1) ... [2020-10-21 23:43:04,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 23:43:04,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 23:43:04,895 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-21 23:43:05,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 23:43:05,055 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 23:43:05,072 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-21 23:43:05,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 23:43:05,197 INFO L208 MainTranslator]: Completed translation [2020-10-21 23:43:05,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:43:05 WrapperNode [2020-10-21 23:43:05,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 23:43:05,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 23:43:05,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 23:43:05,206 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 23:43:05,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:43:05" (1/1) ... [2020-10-21 23:43:05,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:43:05" (1/1) ... [2020-10-21 23:43:05,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 23:43:05,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 23:43:05,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 23:43:05,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 23:43:05,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:43:05" (1/1) ... [2020-10-21 23:43:05,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:43:05" (1/1) ... [2020-10-21 23:43:05,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:43:05" (1/1) ... [2020-10-21 23:43:05,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:43:05" (1/1) ... [2020-10-21 23:43:05,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:43:05" (1/1) ... [2020-10-21 23:43:05,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:43:05" (1/1) ... [2020-10-21 23:43:05,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:43:05" (1/1) ... [2020-10-21 23:43:05,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 23:43:05,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 23:43:05,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 23:43:05,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 23:43:05,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:43:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 23:43:05,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-21 23:43:05,370 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-21 23:43:05,370 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-21 23:43:05,370 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-21 23:43:05,371 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-21 23:43:05,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 23:43:05,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-21 23:43:05,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 23:43:05,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 23:43:05,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 23:43:05,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-21 23:43:05,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 23:43:05,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 23:43:05,375 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 23:43:05,758 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 23:43:05,758 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-21 23:43:05,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 11:43:05 BoogieIcfgContainer [2020-10-21 23:43:05,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 23:43:05,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 23:43:05,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 23:43:05,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 23:43:05,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 11:43:04" (1/3) ... [2020-10-21 23:43:05,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3625f504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 11:43:05, skipping insertion in model container [2020-10-21 23:43:05,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:43:05" (2/3) ... [2020-10-21 23:43:05,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3625f504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 11:43:05, skipping insertion in model container [2020-10-21 23:43:05,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 11:43:05" (3/3) ... [2020-10-21 23:43:05,769 INFO L111 eAbstractionObserver]: Analyzing ICFG peterson.i [2020-10-21 23:43:05,781 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 23:43:05,781 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-21 23:43:05,789 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-21 23:43:05,790 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 23:43:05,819 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,819 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,820 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,820 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,821 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,821 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,821 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,821 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,822 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,822 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,822 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,822 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,823 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,823 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,823 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,823 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,824 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,825 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,825 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,825 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,825 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,826 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,826 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,826 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,827 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,827 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,827 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,828 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,828 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,828 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,829 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,829 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,832 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,833 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,833 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,833 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,834 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,834 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,834 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,834 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,842 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,842 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,842 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,843 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,843 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,843 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,843 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,843 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:43:05,852 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-10-21 23:43:05,864 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-21 23:43:05,882 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 23:43:05,882 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 23:43:05,883 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 23:43:05,883 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-21 23:43:05,883 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 23:43:05,883 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 23:43:05,883 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 23:43:05,883 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 23:43:05,895 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 23:43:05,896 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 78 transitions, 178 flow [2020-10-21 23:43:05,898 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 78 transitions, 178 flow [2020-10-21 23:43:05,899 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 78 transitions, 178 flow [2020-10-21 23:43:05,939 INFO L129 PetriNetUnfolder]: 9/78 cut-off events. [2020-10-21 23:43:05,940 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-21 23:43:05,946 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 78 events. 9/78 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 51. Up to 3 conditions per place. [2020-10-21 23:43:05,950 INFO L116 LiptonReduction]: Number of co-enabled transitions 1320 [2020-10-21 23:43:07,171 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-10-21 23:43:07,275 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-21 23:43:07,289 INFO L131 LiptonReduction]: Checked pairs total: 4998 [2020-10-21 23:43:07,289 INFO L133 LiptonReduction]: Total number of compositions: 56 [2020-10-21 23:43:07,296 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 38 transitions, 98 flow [2020-10-21 23:43:07,320 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 285 states. [2020-10-21 23:43:07,322 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states. [2020-10-21 23:43:07,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-21 23:43:07,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:43:07,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:43:07,330 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:43:07,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:43:07,336 INFO L82 PathProgramCache]: Analyzing trace with hash -248016852, now seen corresponding path program 1 times [2020-10-21 23:43:07,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:43:07,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332663820] [2020-10-21 23:43:07,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:43:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:43:07,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:43:07,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332663820] [2020-10-21 23:43:07,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:43:07,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 23:43:07,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1942816129] [2020-10-21 23:43:07,551 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:43:07,555 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:43:07,569 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-21 23:43:07,569 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:43:07,576 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-21 23:43:07,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:43:07,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:43:07,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:43:07,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:43:07,594 INFO L87 Difference]: Start difference. First operand 285 states. Second operand 3 states. [2020-10-21 23:43:07,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:43:07,662 INFO L93 Difference]: Finished difference Result 318 states and 700 transitions. [2020-10-21 23:43:07,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:43:07,666 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-21 23:43:07,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:43:07,686 INFO L225 Difference]: With dead ends: 318 [2020-10-21 23:43:07,687 INFO L226 Difference]: Without dead ends: 195 [2020-10-21 23:43:07,688 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 [2020-10-21 23:43:07,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-21 23:43:07,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 181. [2020-10-21 23:43:07,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-21 23:43:07,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 413 transitions. [2020-10-21 23:43:07,770 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 413 transitions. Word has length 8 [2020-10-21 23:43:07,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:43:07,770 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 413 transitions. [2020-10-21 23:43:07,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:43:07,771 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 413 transitions. [2020-10-21 23:43:07,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-21 23:43:07,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:43:07,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:43:07,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 23:43:07,773 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:43:07,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:43:07,773 INFO L82 PathProgramCache]: Analyzing trace with hash 312448463, now seen corresponding path program 1 times [2020-10-21 23:43:07,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:43:07,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105800090] [2020-10-21 23:43:07,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:43:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:43:07,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:43:07,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105800090] [2020-10-21 23:43:07,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:43:07,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 23:43:07,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1579253247] [2020-10-21 23:43:07,832 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:43:07,833 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:43:07,834 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-10-21 23:43:07,835 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:43:07,835 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-21 23:43:07,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:43:07,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:43:07,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:43:07,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:43:07,837 INFO L87 Difference]: Start difference. First operand 181 states and 413 transitions. Second operand 3 states. [2020-10-21 23:43:07,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:43:07,857 INFO L93 Difference]: Finished difference Result 168 states and 368 transitions. [2020-10-21 23:43:07,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:43:07,858 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-21 23:43:07,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:43:07,859 INFO L225 Difference]: With dead ends: 168 [2020-10-21 23:43:07,859 INFO L226 Difference]: Without dead ends: 120 [2020-10-21 23:43:07,860 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 [2020-10-21 23:43:07,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-21 23:43:07,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2020-10-21 23:43:07,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-21 23:43:07,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 263 transitions. [2020-10-21 23:43:07,878 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 263 transitions. Word has length 10 [2020-10-21 23:43:07,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:43:07,879 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 263 transitions. [2020-10-21 23:43:07,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:43:07,880 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 263 transitions. [2020-10-21 23:43:07,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 23:43:07,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:43:07,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:43:07,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 23:43:07,886 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:43:07,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:43:07,887 INFO L82 PathProgramCache]: Analyzing trace with hash -104298639, now seen corresponding path program 1 times [2020-10-21 23:43:07,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:43:07,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965505707] [2020-10-21 23:43:07,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:43:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:43:08,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:43:08,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965505707] [2020-10-21 23:43:08,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:43:08,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-21 23:43:08,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2124441667] [2020-10-21 23:43:08,011 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:43:08,012 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:43:08,016 INFO L252 McrAutomatonBuilder]: Finished intersection with 32 states and 46 transitions. [2020-10-21 23:43:08,016 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:43:08,141 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-21 23:43:08,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-21 23:43:08,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:43:08,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-21 23:43:08,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-21 23:43:08,143 INFO L87 Difference]: Start difference. First operand 120 states and 263 transitions. Second operand 6 states. [2020-10-21 23:43:08,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:43:08,227 INFO L93 Difference]: Finished difference Result 162 states and 368 transitions. [2020-10-21 23:43:08,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-21 23:43:08,227 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-21 23:43:08,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:43:08,229 INFO L225 Difference]: With dead ends: 162 [2020-10-21 23:43:08,229 INFO L226 Difference]: Without dead ends: 100 [2020-10-21 23:43:08,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:43:08,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-21 23:43:08,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-10-21 23:43:08,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-21 23:43:08,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 197 transitions. [2020-10-21 23:43:08,238 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 197 transitions. Word has length 15 [2020-10-21 23:43:08,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:43:08,238 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 197 transitions. [2020-10-21 23:43:08,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-21 23:43:08,239 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 197 transitions. [2020-10-21 23:43:08,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 23:43:08,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:43:08,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:43:08,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 23:43:08,240 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:43:08,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:43:08,241 INFO L82 PathProgramCache]: Analyzing trace with hash 810049139, now seen corresponding path program 2 times [2020-10-21 23:43:08,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:43:08,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679699938] [2020-10-21 23:43:08,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:43:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:43:08,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:43:08,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679699938] [2020-10-21 23:43:08,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:43:08,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-21 23:43:08,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1211662840] [2020-10-21 23:43:08,341 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:43:08,346 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:43:08,351 INFO L252 McrAutomatonBuilder]: Finished intersection with 37 states and 52 transitions. [2020-10-21 23:43:08,351 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:43:08,412 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-21 23:43:08,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-21 23:43:08,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:43:08,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-21 23:43:08,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-21 23:43:08,414 INFO L87 Difference]: Start difference. First operand 100 states and 197 transitions. Second operand 6 states. [2020-10-21 23:43:08,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:43:08,465 INFO L93 Difference]: Finished difference Result 58 states and 122 transitions. [2020-10-21 23:43:08,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:43:08,466 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-21 23:43:08,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:43:08,467 INFO L225 Difference]: With dead ends: 58 [2020-10-21 23:43:08,467 INFO L226 Difference]: Without dead ends: 0 [2020-10-21 23:43:08,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-21 23:43:08,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-21 23:43:08,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-21 23:43:08,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-21 23:43:08,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-21 23:43:08,469 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-21 23:43:08,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:43:08,469 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-21 23:43:08,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-21 23:43:08,469 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-21 23:43:08,469 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-21 23:43:08,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-21 23:43:08,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 11:43:08 BasicIcfg [2020-10-21 23:43:08,473 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 23:43:08,475 INFO L168 Benchmark]: Toolchain (without parser) took 3938.01 ms. Allocated memory was 140.0 MB in the beginning and 245.9 MB in the end (delta: 105.9 MB). Free memory was 100.5 MB in the beginning and 95.6 MB in the end (delta: 4.9 MB). Peak memory consumption was 110.8 MB. Max. memory is 7.1 GB. [2020-10-21 23:43:08,476 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-21 23:43:08,477 INFO L168 Benchmark]: CACSL2BoogieTranslator took 661.35 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 99.5 MB in the beginning and 159.3 MB in the end (delta: -59.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-10-21 23:43:08,478 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.18 ms. Allocated memory is still 202.9 MB. Free memory was 159.3 MB in the beginning and 156.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-21 23:43:08,479 INFO L168 Benchmark]: Boogie Preprocessor took 26.97 ms. Allocated memory is still 202.9 MB. Free memory was 156.7 MB in the beginning and 155.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-21 23:43:08,479 INFO L168 Benchmark]: RCFGBuilder took 456.81 ms. Allocated memory is still 202.9 MB. Free memory was 155.4 MB in the beginning and 132.4 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-10-21 23:43:08,480 INFO L168 Benchmark]: TraceAbstraction took 2710.84 ms. Allocated memory was 202.9 MB in the beginning and 245.9 MB in the end (delta: 43.0 MB). Free memory was 131.7 MB in the beginning and 95.6 MB in the end (delta: 36.1 MB). Peak memory consumption was 79.1 MB. Max. memory is 7.1 GB. [2020-10-21 23:43:08,486 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 661.35 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 99.5 MB in the beginning and 159.3 MB in the end (delta: -59.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 71.18 ms. Allocated memory is still 202.9 MB. Free memory was 159.3 MB in the beginning and 156.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.97 ms. Allocated memory is still 202.9 MB. Free memory was 156.7 MB in the beginning and 155.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 456.81 ms. Allocated memory is still 202.9 MB. Free memory was 155.4 MB in the beginning and 132.4 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2710.84 ms. Allocated memory was 202.9 MB in the beginning and 245.9 MB in the end (delta: 43.0 MB). Free memory was 131.7 MB in the beginning and 95.6 MB in the end (delta: 36.1 MB). Peak memory consumption was 79.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 712 VarBasedMoverChecksPositive, 28 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 178 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 75 PlacesBefore, 38 PlacesAfterwards, 78 TransitionsBefore, 38 TransitionsAfterwards, 1320 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 3 ChoiceCompositions, 56 TotalNumberOfCompositions, 4998 MoverChecksTotal - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: 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, 69 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 146 SDtfs, 103 SDslu, 176 SDs, 0 SdLazy, 91 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=285occurred 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, 4 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, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1338 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...