/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-SP.epf -i ../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 02:24:53,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 02:24:53,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 02:24:53,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 02:24:53,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 02:24:53,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 02:24:53,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 02:24:53,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 02:24:53,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 02:24:53,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 02:24:53,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 02:24:53,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 02:24:53,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 02:24:53,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 02:24:53,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 02:24:53,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 02:24:53,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 02:24:53,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 02:24:53,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 02:24:53,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 02:24:53,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 02:24:53,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 02:24:53,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 02:24:53,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 02:24:53,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-22 02:24:53,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 02:24:53,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 02:24:53,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 02:24:53,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 02:24:53,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 02:24:53,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 02:24:53,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 02:24:53,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 02:24:53,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 02:24:53,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 02:24:53,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 02:24:53,274 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-SP.epf [2020-10-22 02:24:53,314 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 02:24:53,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 02:24:53,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 02:24:53,320 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 02:24:53,320 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 02:24:53,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 02:24:53,320 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 02:24:53,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 02:24:53,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 02:24:53,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 02:24:53,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 02:24:53,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 02:24:53,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 02:24:53,322 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 02:24:53,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 02:24:53,322 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 02:24:53,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 02:24:53,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 02:24:53,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 02:24:53,323 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 02:24:53,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 02:24:53,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 02:24:53,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 02:24:53,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 02:24:53,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 02:24:53,327 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 02:24:53,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 02:24:53,328 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 02:24:53,328 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 02:24:53,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 02:24:53,328 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 02:24:53,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 02:24:53,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 02:24:53,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 02:24:53,713 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 02:24:53,714 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 02:24:53,716 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i [2020-10-22 02:24:53,796 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6047177e/231351509a52403dbf59d7284bf7d8df/FLAG9423c73c2 [2020-10-22 02:24:54,384 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 02:24:54,385 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2.i [2020-10-22 02:24:54,400 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6047177e/231351509a52403dbf59d7284bf7d8df/FLAG9423c73c2 [2020-10-22 02:24:54,685 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6047177e/231351509a52403dbf59d7284bf7d8df [2020-10-22 02:24:54,694 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 02:24:54,701 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 02:24:54,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 02:24:54,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 02:24:54,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 02:24:54,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:24:54" (1/1) ... [2020-10-22 02:24:54,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@297ccb29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:54, skipping insertion in model container [2020-10-22 02:24:54,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:24:54" (1/1) ... [2020-10-22 02:24:54,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 02:24:54,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 02:24:55,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:24:55,332 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 02:24:55,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:24:55,494 INFO L208 MainTranslator]: Completed translation [2020-10-22 02:24:55,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:55 WrapperNode [2020-10-22 02:24:55,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 02:24:55,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 02:24:55,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 02:24:55,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 02:24:55,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:55" (1/1) ... [2020-10-22 02:24:55,522 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:55" (1/1) ... [2020-10-22 02:24:55,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 02:24:55,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 02:24:55,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 02:24:55,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 02:24:55,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:55" (1/1) ... [2020-10-22 02:24:55,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:55" (1/1) ... [2020-10-22 02:24:55,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:55" (1/1) ... [2020-10-22 02:24:55,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:55" (1/1) ... [2020-10-22 02:24:55,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:55" (1/1) ... [2020-10-22 02:24:55,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:55" (1/1) ... [2020-10-22 02:24:55,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:55" (1/1) ... [2020-10-22 02:24:55,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 02:24:55,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 02:24:55,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 02:24:55,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 02:24:55,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:55" (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 [2020-10-22 02:24:55,638 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2020-10-22 02:24:55,638 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2020-10-22 02:24:55,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 02:24:55,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-22 02:24:55,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 02:24:55,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 02:24:55,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 02:24:55,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-22 02:24:55,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 02:24:55,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 02:24:55,641 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 02:24:56,091 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 02:24:56,094 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-10-22 02:24:56,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:24:56 BoogieIcfgContainer [2020-10-22 02:24:56,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 02:24:56,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 02:24:56,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 02:24:56,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 02:24:56,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 02:24:54" (1/3) ... [2020-10-22 02:24:56,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d53448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:24:56, skipping insertion in model container [2020-10-22 02:24:56,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:55" (2/3) ... [2020-10-22 02:24:56,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d53448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:24:56, skipping insertion in model container [2020-10-22 02:24:56,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:24:56" (3/3) ... [2020-10-22 02:24:56,109 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-2.i [2020-10-22 02:24:56,122 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 02:24:56,122 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 02:24:56,129 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 02:24:56,130 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 02:24:56,158 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,159 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,159 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,159 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,160 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,160 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,160 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,161 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,161 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,161 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,161 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,162 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,162 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,162 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,163 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,163 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,163 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,164 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,164 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,164 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,164 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,165 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,165 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,165 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,165 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,166 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,166 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,166 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,166 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,167 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,170 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,171 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,171 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,171 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,171 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,171 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,172 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,172 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,172 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,172 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,172 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,179 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 02:24:56,192 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-22 02:24:56,212 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 02:24:56,212 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 02:24:56,212 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 02:24:56,212 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 02:24:56,212 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 02:24:56,212 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 02:24:56,213 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 02:24:56,213 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 02:24:56,227 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 02:24:56,228 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 96 transitions, 197 flow [2020-10-22 02:24:56,231 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 96 transitions, 197 flow [2020-10-22 02:24:56,234 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 93 places, 96 transitions, 197 flow [2020-10-22 02:24:56,291 INFO L129 PetriNetUnfolder]: 7/95 cut-off events. [2020-10-22 02:24:56,291 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-22 02:24:56,300 INFO L80 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 95 events. 7/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 97 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 75. Up to 3 conditions per place. [2020-10-22 02:24:56,304 INFO L116 LiptonReduction]: Number of co-enabled transitions 2448 [2020-10-22 02:24:58,126 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-22 02:24:58,273 INFO L131 LiptonReduction]: Checked pairs total: 3189 [2020-10-22 02:24:58,273 INFO L133 LiptonReduction]: Total number of compositions: 108 [2020-10-22 02:24:58,280 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 20 transitions, 45 flow [2020-10-22 02:24:58,304 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 56 states. [2020-10-22 02:24:58,306 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-22 02:24:58,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-22 02:24:58,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:58,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-22 02:24:58,315 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:24:58,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:58,321 INFO L82 PathProgramCache]: Analyzing trace with hash 12060795, now seen corresponding path program 1 times [2020-10-22 02:24:58,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:58,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475769707] [2020-10-22 02:24:58,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:24:58,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:24:58,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475769707] [2020-10-22 02:24:58,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:24:58,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:24:58,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1308288109] [2020-10-22 02:24:58,523 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:24:58,526 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:24:58,540 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-10-22 02:24:58,540 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:24:58,546 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:24:58,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:24:58,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:24:58,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:24:58,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:24:58,567 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 3 states. [2020-10-22 02:24:58,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:24:58,595 INFO L93 Difference]: Finished difference Result 96 states and 195 transitions. [2020-10-22 02:24:58,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:24:58,597 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-22 02:24:58,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:24:58,610 INFO L225 Difference]: With dead ends: 96 [2020-10-22 02:24:58,610 INFO L226 Difference]: Without dead ends: 41 [2020-10-22 02:24:58,612 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 [2020-10-22 02:24:58,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-22 02:24:58,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 26. [2020-10-22 02:24:58,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-22 02:24:58,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 49 transitions. [2020-10-22 02:24:58,657 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 49 transitions. Word has length 4 [2020-10-22 02:24:58,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:24:58,657 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 49 transitions. [2020-10-22 02:24:58,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:24:58,658 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 49 transitions. [2020-10-22 02:24:58,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-22 02:24:58,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:58,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-22 02:24:58,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 02:24:58,660 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:24:58,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:58,660 INFO L82 PathProgramCache]: Analyzing trace with hash 373841738, now seen corresponding path program 1 times [2020-10-22 02:24:58,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:58,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774172345] [2020-10-22 02:24:58,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:24:58,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:24:58,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774172345] [2020-10-22 02:24:58,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:24:58,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 02:24:58,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [993343420] [2020-10-22 02:24:58,720 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:24:58,720 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:24:58,721 INFO L252 McrAutomatonBuilder]: Finished intersection with 6 states and 5 transitions. [2020-10-22 02:24:58,722 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:24:58,722 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:24:58,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:24:58,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:24:58,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:24:58,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:24:58,725 INFO L87 Difference]: Start difference. First operand 26 states and 49 transitions. Second operand 3 states. [2020-10-22 02:24:58,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:24:58,734 INFO L93 Difference]: Finished difference Result 21 states and 38 transitions. [2020-10-22 02:24:58,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:24:58,735 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-22 02:24:58,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:24:58,736 INFO L225 Difference]: With dead ends: 21 [2020-10-22 02:24:58,736 INFO L226 Difference]: Without dead ends: 21 [2020-10-22 02:24:58,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:24:58,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-22 02:24:58,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-22 02:24:58,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-22 02:24:58,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 38 transitions. [2020-10-22 02:24:58,742 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 38 transitions. Word has length 5 [2020-10-22 02:24:58,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:24:58,743 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 38 transitions. [2020-10-22 02:24:58,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:24:58,743 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 38 transitions. [2020-10-22 02:24:58,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-22 02:24:58,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:58,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:24:58,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 02:24:58,745 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:24:58,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:58,745 INFO L82 PathProgramCache]: Analyzing trace with hash 268410658, now seen corresponding path program 1 times [2020-10-22 02:24:58,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:58,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600747045] [2020-10-22 02:24:58,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:24:58,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:24:58,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600747045] [2020-10-22 02:24:58,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:24:58,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:24:58,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1895249230] [2020-10-22 02:24:58,874 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:24:58,875 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:24:58,879 INFO L252 McrAutomatonBuilder]: Finished intersection with 12 states and 14 transitions. [2020-10-22 02:24:58,880 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:24:58,954 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:24:58,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:24:58,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:24:58,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:24:58,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:24:58,955 INFO L87 Difference]: Start difference. First operand 21 states and 38 transitions. Second operand 4 states. [2020-10-22 02:24:58,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:24:58,978 INFO L93 Difference]: Finished difference Result 24 states and 41 transitions. [2020-10-22 02:24:58,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 02:24:58,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-22 02:24:58,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:24:58,979 INFO L225 Difference]: With dead ends: 24 [2020-10-22 02:24:58,979 INFO L226 Difference]: Without dead ends: 21 [2020-10-22 02:24:58,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:24:58,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-22 02:24:58,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-22 02:24:58,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-22 02:24:58,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 35 transitions. [2020-10-22 02:24:58,982 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 35 transitions. Word has length 8 [2020-10-22 02:24:58,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:24:58,983 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 35 transitions. [2020-10-22 02:24:58,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:24:58,983 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 35 transitions. [2020-10-22 02:24:58,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 02:24:58,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:58,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:24:58,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 02:24:58,984 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:24:58,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:58,985 INFO L82 PathProgramCache]: Analyzing trace with hash -269161076, now seen corresponding path program 1 times [2020-10-22 02:24:58,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:58,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899075365] [2020-10-22 02:24:58,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:24:59,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:24:59,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899075365] [2020-10-22 02:24:59,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:24:59,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:24:59,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1591904415] [2020-10-22 02:24:59,026 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:24:59,027 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:24:59,029 INFO L252 McrAutomatonBuilder]: Finished intersection with 14 states and 17 transitions. [2020-10-22 02:24:59,029 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:24:59,054 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:24:59,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:24:59,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:24:59,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:24:59,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:24:59,056 INFO L87 Difference]: Start difference. First operand 21 states and 35 transitions. Second operand 3 states. [2020-10-22 02:24:59,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:24:59,062 INFO L93 Difference]: Finished difference Result 26 states and 39 transitions. [2020-10-22 02:24:59,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:24:59,063 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-22 02:24:59,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:24:59,063 INFO L225 Difference]: With dead ends: 26 [2020-10-22 02:24:59,064 INFO L226 Difference]: Without dead ends: 21 [2020-10-22 02:24:59,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:24:59,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-22 02:24:59,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-22 02:24:59,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-22 02:24:59,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 30 transitions. [2020-10-22 02:24:59,067 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 30 transitions. Word has length 9 [2020-10-22 02:24:59,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:24:59,068 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 30 transitions. [2020-10-22 02:24:59,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:24:59,068 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 30 transitions. [2020-10-22 02:24:59,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 02:24:59,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:59,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:24:59,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-22 02:24:59,069 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:24:59,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:59,070 INFO L82 PathProgramCache]: Analyzing trace with hash -766886899, now seen corresponding path program 1 times [2020-10-22 02:24:59,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:59,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798245037] [2020-10-22 02:24:59,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:24:59,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:24:59,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798245037] [2020-10-22 02:24:59,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:24:59,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:24:59,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [19084478] [2020-10-22 02:24:59,127 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:24:59,128 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:24:59,130 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 24 transitions. [2020-10-22 02:24:59,130 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:24:59,181 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [571#(not (= ~stoppingFlag~0 0))] [2020-10-22 02:24:59,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:24:59,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:24:59,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:24:59,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:24:59,183 INFO L87 Difference]: Start difference. First operand 21 states and 30 transitions. Second operand 4 states. [2020-10-22 02:24:59,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:24:59,191 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2020-10-22 02:24:59,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:24:59,192 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-22 02:24:59,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:24:59,192 INFO L225 Difference]: With dead ends: 21 [2020-10-22 02:24:59,193 INFO L226 Difference]: Without dead ends: 16 [2020-10-22 02:24:59,193 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 [2020-10-22 02:24:59,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-22 02:24:59,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-22 02:24:59,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-22 02:24:59,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2020-10-22 02:24:59,196 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 10 [2020-10-22 02:24:59,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:24:59,196 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2020-10-22 02:24:59,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:24:59,197 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2020-10-22 02:24:59,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 02:24:59,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:59,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:24:59,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-22 02:24:59,198 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:24:59,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:59,198 INFO L82 PathProgramCache]: Analyzing trace with hash -58457807, now seen corresponding path program 2 times [2020-10-22 02:24:59,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:59,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500161665] [2020-10-22 02:24:59,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 02:24:59,218 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 02:24:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 02:24:59,229 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 02:24:59,254 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-22 02:24:59,254 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-22 02:24:59,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-22 02:24:59,256 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-22 02:24:59,262 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [353] [353] L686-->BCSP_PnpStopEXIT: Formula: (and (= |BCSP_PnpStopThread1of1ForFork0_#res.offset_Out1393350749| 0) (= |BCSP_PnpStopThread1of1ForFork0_#res.base_Out1393350749| 0) (= ~stopped~0_Out1393350749 1) (not (= BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_In1393350749 0))) InVars {BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond=BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_In1393350749} OutVars{BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond=BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_In1393350749, BCSP_PnpStopThread1of1ForFork0_#res.base=|BCSP_PnpStopThread1of1ForFork0_#res.base_Out1393350749|, ~stopped~0=~stopped~0_Out1393350749, BCSP_PnpStopThread1of1ForFork0_#res.offset=|BCSP_PnpStopThread1of1ForFork0_#res.offset_Out1393350749|} AuxVars[] AssignedVars[BCSP_PnpStopThread1of1ForFork0_#res.base, ~stopped~0, BCSP_PnpStopThread1of1ForFork0_#res.offset] because there is no mapped edge [2020-10-22 02:24:59,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 02:24:59 BasicIcfg [2020-10-22 02:24:59,293 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 02:24:59,295 INFO L168 Benchmark]: Toolchain (without parser) took 4598.73 ms. Allocated memory was 136.8 MB in the beginning and 255.3 MB in the end (delta: 118.5 MB). Free memory was 98.8 MB in the beginning and 179.4 MB in the end (delta: -80.6 MB). Peak memory consumption was 37.9 MB. Max. memory is 7.1 GB. [2020-10-22 02:24:59,297 INFO L168 Benchmark]: CDTParser took 2.99 ms. Allocated memory is still 136.8 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-22 02:24:59,299 INFO L168 Benchmark]: CACSL2BoogieTranslator took 793.51 ms. Allocated memory was 136.8 MB in the beginning and 199.2 MB in the end (delta: 62.4 MB). Free memory was 98.0 MB in the beginning and 153.3 MB in the end (delta: -55.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-10-22 02:24:59,305 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.09 ms. Allocated memory is still 199.2 MB. Free memory was 153.3 MB in the beginning and 151.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-22 02:24:59,306 INFO L168 Benchmark]: Boogie Preprocessor took 27.25 ms. Allocated memory is still 199.2 MB. Free memory was 151.2 MB in the beginning and 149.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-22 02:24:59,307 INFO L168 Benchmark]: RCFGBuilder took 522.90 ms. Allocated memory is still 199.2 MB. Free memory was 149.8 MB in the beginning and 121.9 MB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. [2020-10-22 02:24:59,308 INFO L168 Benchmark]: TraceAbstraction took 3193.32 ms. Allocated memory was 199.2 MB in the beginning and 255.3 MB in the end (delta: 56.1 MB). Free memory was 121.2 MB in the beginning and 179.4 MB in the end (delta: -58.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-22 02:24:59,321 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.99 ms. Allocated memory is still 136.8 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 793.51 ms. Allocated memory was 136.8 MB in the beginning and 199.2 MB in the end (delta: 62.4 MB). Free memory was 98.0 MB in the beginning and 153.3 MB in the end (delta: -55.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.09 ms. Allocated memory is still 199.2 MB. Free memory was 153.3 MB in the beginning and 151.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.25 ms. Allocated memory is still 199.2 MB. Free memory was 151.2 MB in the beginning and 149.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 522.90 ms. Allocated memory is still 199.2 MB. Free memory was 149.8 MB in the beginning and 121.9 MB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3193.32 ms. Allocated memory was 199.2 MB in the beginning and 255.3 MB in the end (delta: 56.1 MB). Free memory was 121.2 MB in the beginning and 179.4 MB in the end (delta: -58.2 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1482 VarBasedMoverChecksPositive, 34 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 48 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 93 PlacesBefore, 20 PlacesAfterwards, 96 TransitionsBefore, 20 TransitionsAfterwards, 2448 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 65 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 22 ConcurrentYvCompositions, 3 ChoiceCompositions, 108 TotalNumberOfCompositions, 3189 MoverChecksTotal - CounterExampleResult [Line: 683]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L697] 0 volatile int stoppingFlag; [L698] 0 volatile int pendingIo; [L699] 0 volatile int stoppingEvent; [L700] 0 volatile int stopped; [L740] 0 pthread_t t; [L741] 0 pendingIo = 1 [L742] 0 stoppingFlag = 0 [L743] 0 stoppingEvent = 0 [L744] 0 stopped = 0 [L745] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L724] 0 int status; [L702] COND FALSE 0 !(\read(stoppingFlag)) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L733] 1 stoppingFlag = 1 [L717] 1 int pending; [L711] 1 pendingIo-- [L712] 1 int tmp = pendingIo; [L714] 1 return tmp; [L705] 0 pendingIo = pendingIo + 1 [L707] 0 return 0; [L718] 1 pending = dec() [L719] COND TRUE 1 pending == 0 [L720] 1 stoppingEvent = 1 VAL [pendingIo=1, stopped=0, stoppingEvent=1, stoppingFlag=1] [L725] 0 status = BCSP_IoIncrement() [L726] COND TRUE 0 status == 0 [L689] COND TRUE 0 !(cond) [L683] COND FALSE 0 !(0) [L683] 0 __assert_fail ("0", "assert.h", 6, __extension__ __PRETTY_FUNCTION__) VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 90 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 81 SDtfs, 31 SDslu, 40 SDs, 0 SdLazy, 18 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred 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, 15 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 543 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 incorrect! Received shutdown request...