/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:23:16,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:23:16,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:23:16,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:23:16,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:23:16,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:23:16,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:23:16,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:23:16,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:23:16,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:23:16,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:23:16,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:23:16,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:23:16,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:23:16,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:23:16,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:23:16,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:23:16,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:23:16,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:23:16,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:23:16,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:23:16,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:23:16,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:23:16,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:23:16,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 11:23:16,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:23:16,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:23:16,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:23:16,874 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-16 11:23:16,896 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:23:16,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:23:16,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:23:16,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:23:16,898 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:23:16,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:23:16,898 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:23:16,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:23:16,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:23:16,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:23:16,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:23:16,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:23:16,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:23:16,899 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:23:16,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:23:16,900 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:23:16,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:23:16,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:23:16,900 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:23:16,901 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:23:16,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:23:16,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:23:16,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:23:16,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 11:23:16,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:23:16,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:23:16,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:23:16,902 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:23:16,903 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 11:23:16,903 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 11:23:17,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:23:17,225 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:23:17,229 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:23:17,232 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:23:17,235 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:23:17,236 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i [2020-10-16 11:23:17,301 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6acd41b17/225b5f5971564990a808cff37fa9c77b/FLAG3d9268495 [2020-10-16 11:23:17,836 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:23:17,836 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-lit/qw2004-2.i [2020-10-16 11:23:17,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6acd41b17/225b5f5971564990a808cff37fa9c77b/FLAG3d9268495 [2020-10-16 11:23:18,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6acd41b17/225b5f5971564990a808cff37fa9c77b [2020-10-16 11:23:18,177 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:23:18,179 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:23:18,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:23:18,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:23:18,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:23:18,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:23:18" (1/1) ... [2020-10-16 11:23:18,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c6ce511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:18, skipping insertion in model container [2020-10-16 11:23:18,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:23:18" (1/1) ... [2020-10-16 11:23:18,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:23:18,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:23:18,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:23:18,685 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:23:18,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:23:18,810 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:23:18,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:18 WrapperNode [2020-10-16 11:23:18,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:23:18,811 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:23:18,812 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:23:18,812 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:23:18,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:18" (1/1) ... [2020-10-16 11:23:18,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:18" (1/1) ... [2020-10-16 11:23:18,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:23:18,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:23:18,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:23:18,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:23:18,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:18" (1/1) ... [2020-10-16 11:23:18,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:18" (1/1) ... [2020-10-16 11:23:18,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:18" (1/1) ... [2020-10-16 11:23:18,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:18" (1/1) ... [2020-10-16 11:23:18,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:18" (1/1) ... [2020-10-16 11:23:18,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:18" (1/1) ... [2020-10-16 11:23:18,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:18" (1/1) ... [2020-10-16 11:23:18,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:23:18,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:23:18,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:23:18,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:23:18,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:23:18,976 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2020-10-16 11:23:18,976 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2020-10-16 11:23:18,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:23:18,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 11:23:18,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:23:18,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:23:18,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 11:23:18,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:23:18,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:23:18,979 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 11:23:19,415 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:23:19,415 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-16 11:23:19,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:23:19 BoogieIcfgContainer [2020-10-16 11:23:19,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:23:19,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:23:19,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:23:19,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:23:19,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:23:18" (1/3) ... [2020-10-16 11:23:19,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76de5d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:23:19, skipping insertion in model container [2020-10-16 11:23:19,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:18" (2/3) ... [2020-10-16 11:23:19,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76de5d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:23:19, skipping insertion in model container [2020-10-16 11:23:19,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:23:19" (3/3) ... [2020-10-16 11:23:19,428 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-2.i [2020-10-16 11:23:19,441 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:23:19,442 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:23:19,451 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 11:23:19,452 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:23:19,481 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,481 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,481 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,482 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,482 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,483 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,483 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,483 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,483 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,484 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,484 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,484 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,485 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,485 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,485 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,485 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,486 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,486 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,486 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,487 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,487 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,487 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,487 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,488 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,488 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,488 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,489 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,489 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,489 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,489 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,493 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,494 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,494 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,495 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,495 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,495 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,495 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,496 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,496 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,496 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,496 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,499 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:23:19,514 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-16 11:23:19,534 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:23:19,534 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:23:19,534 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:23:19,534 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:23:19,534 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:23:19,535 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:23:19,535 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:23:19,535 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:23:19,548 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:23:19,551 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 87 transitions, 179 flow [2020-10-16 11:23:19,553 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 87 transitions, 179 flow [2020-10-16 11:23:19,556 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 87 transitions, 179 flow [2020-10-16 11:23:19,603 INFO L129 PetriNetUnfolder]: 6/86 cut-off events. [2020-10-16 11:23:19,603 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 11:23:19,611 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 86 events. 6/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2020-10-16 11:23:19,614 INFO L117 LiptonReduction]: Number of co-enabled transitions 2208 [2020-10-16 11:23:21,614 INFO L132 LiptonReduction]: Checked pairs total: 2663 [2020-10-16 11:23:21,614 INFO L134 LiptonReduction]: Total number of compositions: 97 [2020-10-16 11:23:21,622 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 17 transitions, 39 flow [2020-10-16 11:23:21,651 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-16 11:23:21,658 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-16 11:23:21,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-16 11:23:21,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:21,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-16 11:23:21,673 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:21,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:21,679 INFO L82 PathProgramCache]: Analyzing trace with hash 11055550, now seen corresponding path program 1 times [2020-10-16 11:23:21,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:21,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188169630] [2020-10-16 11:23:21,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:21,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:21,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188169630] [2020-10-16 11:23:21,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:21,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:23:21,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579856051] [2020-10-16 11:23:21,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:23:21,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:21,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:23:21,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:21,914 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-16 11:23:21,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:21,945 INFO L93 Difference]: Finished difference Result 74 states and 151 transitions. [2020-10-16 11:23:21,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:23:21,947 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-16 11:23:21,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:21,959 INFO L225 Difference]: With dead ends: 74 [2020-10-16 11:23:21,960 INFO L226 Difference]: Without dead ends: 41 [2020-10-16 11:23:21,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:21,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-16 11:23:21,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 26. [2020-10-16 11:23:21,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-16 11:23:22,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 49 transitions. [2020-10-16 11:23:22,001 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 49 transitions. Word has length 4 [2020-10-16 11:23:22,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:22,002 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 49 transitions. [2020-10-16 11:23:22,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:23:22,002 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 49 transitions. [2020-10-16 11:23:22,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-16 11:23:22,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:22,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 11:23:22,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:23:22,004 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:22,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:22,004 INFO L82 PathProgramCache]: Analyzing trace with hash 342711158, now seen corresponding path program 1 times [2020-10-16 11:23:22,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:22,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436442077] [2020-10-16 11:23:22,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:22,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:22,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436442077] [2020-10-16 11:23:22,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:22,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:23:22,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293995003] [2020-10-16 11:23:22,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:23:22,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:22,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:23:22,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:22,064 INFO L87 Difference]: Start difference. First operand 26 states and 49 transitions. Second operand 3 states. [2020-10-16 11:23:22,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:22,078 INFO L93 Difference]: Finished difference Result 21 states and 38 transitions. [2020-10-16 11:23:22,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:23:22,078 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-16 11:23:22,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:22,079 INFO L225 Difference]: With dead ends: 21 [2020-10-16 11:23:22,079 INFO L226 Difference]: Without dead ends: 21 [2020-10-16 11:23:22,080 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 [2020-10-16 11:23:22,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-16 11:23:22,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-16 11:23:22,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-16 11:23:22,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 38 transitions. [2020-10-16 11:23:22,088 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 38 transitions. Word has length 5 [2020-10-16 11:23:22,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:22,088 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 38 transitions. [2020-10-16 11:23:22,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:23:22,088 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 38 transitions. [2020-10-16 11:23:22,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-16 11:23:22,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:22,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:22,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 11:23:22,093 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:22,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:22,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1391157156, now seen corresponding path program 1 times [2020-10-16 11:23:22,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:22,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988191077] [2020-10-16 11:23:22,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:22,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:22,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:22,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988191077] [2020-10-16 11:23:22,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:22,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:23:22,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360247230] [2020-10-16 11:23:22,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:23:22,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:22,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:23:22,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:22,225 INFO L87 Difference]: Start difference. First operand 21 states and 38 transitions. Second operand 3 states. [2020-10-16 11:23:22,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:22,231 INFO L93 Difference]: Finished difference Result 26 states and 43 transitions. [2020-10-16 11:23:22,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:23:22,232 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-16 11:23:22,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:22,233 INFO L225 Difference]: With dead ends: 26 [2020-10-16 11:23:22,233 INFO L226 Difference]: Without dead ends: 21 [2020-10-16 11:23:22,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:22,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-16 11:23:22,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-16 11:23:22,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-16 11:23:22,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 33 transitions. [2020-10-16 11:23:22,237 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 33 transitions. Word has length 7 [2020-10-16 11:23:22,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:22,238 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 33 transitions. [2020-10-16 11:23:22,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:23:22,238 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 33 transitions. [2020-10-16 11:23:22,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 11:23:22,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:22,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:22,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 11:23:22,239 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:22,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:22,240 INFO L82 PathProgramCache]: Analyzing trace with hash 570241712, now seen corresponding path program 1 times [2020-10-16 11:23:22,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:22,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013825435] [2020-10-16 11:23:22,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:22,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:22,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013825435] [2020-10-16 11:23:22,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:22,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 11:23:22,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339386178] [2020-10-16 11:23:22,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:22,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:22,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:22,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:22,341 INFO L87 Difference]: Start difference. First operand 21 states and 33 transitions. Second operand 5 states. [2020-10-16 11:23:22,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:22,398 INFO L93 Difference]: Finished difference Result 26 states and 36 transitions. [2020-10-16 11:23:22,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:23:22,401 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-16 11:23:22,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:22,401 INFO L225 Difference]: With dead ends: 26 [2020-10-16 11:23:22,402 INFO L226 Difference]: Without dead ends: 25 [2020-10-16 11:23:22,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 11:23:22,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-16 11:23:22,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2020-10-16 11:23:22,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-16 11:23:22,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 32 transitions. [2020-10-16 11:23:22,410 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 32 transitions. Word has length 8 [2020-10-16 11:23:22,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:22,411 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 32 transitions. [2020-10-16 11:23:22,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:22,411 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 32 transitions. [2020-10-16 11:23:22,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 11:23:22,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:22,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:22,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 11:23:22,414 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:22,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:22,414 INFO L82 PathProgramCache]: Analyzing trace with hash 561679202, now seen corresponding path program 2 times [2020-10-16 11:23:22,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:22,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972627380] [2020-10-16 11:23:22,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:23:22,448 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:23:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:23:22,467 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:23:22,512 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 11:23:22,512 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 11:23:22,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 11:23:22,514 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 11:23:22,520 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [320] [320] L674-->BCSP_PnpStopEXIT: Formula: (and (= |BCSP_PnpStopThread1of1ForFork0_#res.offset_Out-1512140943| 0) (= |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_In-1512140943| BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_Out-1512140943) (= |BCSP_PnpStopThread1of1ForFork0_#res.base_Out-1512140943| 0) (not (= BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_Out-1512140943 0)) (= ~stopped~0_Out-1512140943 1)) InVars {BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond=|BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_In-1512140943|} OutVars{BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond=BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_Out-1512140943, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond=|BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_In-1512140943|, BCSP_PnpStopThread1of1ForFork0_#res.base=|BCSP_PnpStopThread1of1ForFork0_#res.base_Out-1512140943|, ~stopped~0=~stopped~0_Out-1512140943, BCSP_PnpStopThread1of1ForFork0_#res.offset=|BCSP_PnpStopThread1of1ForFork0_#res.offset_Out-1512140943|} AuxVars[] AssignedVars[BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond, BCSP_PnpStopThread1of1ForFork0_#res.base, ~stopped~0, BCSP_PnpStopThread1of1ForFork0_#res.offset] because there is no mapped edge [2020-10-16 11:23:22,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:23:22 BasicIcfg [2020-10-16 11:23:22,543 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:23:22,546 INFO L168 Benchmark]: Toolchain (without parser) took 4366.63 ms. Allocated memory was 139.5 MB in the beginning and 249.6 MB in the end (delta: 110.1 MB). Free memory was 100.9 MB in the beginning and 177.1 MB in the end (delta: -76.2 MB). Peak memory consumption was 33.9 MB. Max. memory is 7.1 GB. [2020-10-16 11:23:22,547 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 139.5 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 11:23:22,548 INFO L168 Benchmark]: CACSL2BoogieTranslator took 630.36 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 100.5 MB in the beginning and 157.6 MB in the end (delta: -57.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-10-16 11:23:22,549 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.96 ms. Allocated memory is still 201.9 MB. Free memory was 157.6 MB in the beginning and 155.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:23:22,550 INFO L168 Benchmark]: Boogie Preprocessor took 28.55 ms. Allocated memory is still 201.9 MB. Free memory was 155.5 MB in the beginning and 154.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-16 11:23:22,551 INFO L168 Benchmark]: RCFGBuilder took 521.78 ms. Allocated memory is still 201.9 MB. Free memory was 153.5 MB in the beginning and 127.9 MB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-10-16 11:23:22,552 INFO L168 Benchmark]: TraceAbstraction took 3123.30 ms. Allocated memory was 201.9 MB in the beginning and 249.6 MB in the end (delta: 47.7 MB). Free memory was 127.2 MB in the beginning and 177.1 MB in the end (delta: -49.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 11:23:22,556 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 139.5 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 630.36 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 100.5 MB in the beginning and 157.6 MB in the end (delta: -57.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.96 ms. Allocated memory is still 201.9 MB. Free memory was 157.6 MB in the beginning and 155.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.55 ms. Allocated memory is still 201.9 MB. Free memory was 155.5 MB in the beginning and 154.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 521.78 ms. Allocated memory is still 201.9 MB. Free memory was 153.5 MB in the beginning and 127.9 MB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3123.30 ms. Allocated memory was 201.9 MB in the beginning and 249.6 MB in the end (delta: 47.7 MB). Free memory was 127.2 MB in the beginning and 177.1 MB in the end (delta: -49.9 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 1732 VarBasedMoverChecksPositive, 58 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 41 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 64 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 85 PlacesBefore, 18 PlacesAfterwards, 87 TransitionsBefore, 17 TransitionsAfterwards, 2208 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 54 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 26 ConcurrentYvCompositions, 3 ChoiceCompositions, 97 TotalNumberOfCompositions, 2663 MoverChecksTotal - CounterExampleResult [Line: 679]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L686] 0 volatile int stoppingFlag; [L687] 0 volatile int pendingIo; [L688] 0 volatile int stoppingEvent; [L689] 0 volatile int stopped; [L729] 0 pthread_t t; [L730] 0 pendingIo = 1 [L731] 0 stoppingFlag = 0 [L732] 0 stoppingEvent = 0 [L733] 0 stopped = 0 [L734] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L713] 0 int status; [L691] COND FALSE 0 !(\read(stoppingFlag)) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L722] 1 stoppingFlag = 1 [L706] 1 int pending; [L700] 1 pendingIo-- [L701] 1 int tmp = pendingIo; [L703] 1 return tmp; [L707] 1 pending = dec() [L694] 0 pendingIo = pendingIo + 1 [L696] 0 return 0; [L708] COND TRUE 1 pending == 0 [L709] 1 stoppingEvent = 1 [L714] 0 status = BCSP_IoIncrement() [L715] COND TRUE 0 status == 0 [L678] COND TRUE 0 !(cond) [L679] 0 __VERIFIER_error() VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 82 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 61 SDtfs, 24 SDslu, 39 SDs, 0 SdLazy, 30 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 292 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 incorrect! Received shutdown request...