/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 20:32:09,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 20:32:09,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 20:32:09,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 20:32:09,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 20:32:09,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 20:32:09,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 20:32:09,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 20:32:09,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 20:32:09,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 20:32:09,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 20:32:09,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 20:32:09,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 20:32:09,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 20:32:09,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 20:32:09,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 20:32:09,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 20:32:09,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 20:32:09,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 20:32:09,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 20:32:09,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 20:32:09,587 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 20:32:09,588 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 20:32:09,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 20:32:09,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 20:32:09,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 20:32:09,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 20:32:09,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 20:32:09,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 20:32:09,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 20:32:09,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 20:32:09,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 20:32:09,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 20:32:09,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 20:32:09,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 20:32:09,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 20:32:09,606 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-11 20:32:09,627 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 20:32:09,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 20:32:09,630 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 20:32:09,630 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 20:32:09,630 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 20:32:09,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 20:32:09,631 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 20:32:09,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 20:32:09,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 20:32:09,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 20:32:09,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 20:32:09,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 20:32:09,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 20:32:09,632 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 20:32:09,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 20:32:09,632 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 20:32:09,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 20:32:09,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 20:32:09,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 20:32:09,633 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 20:32:09,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 20:32:09,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:32:09,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 20:32:09,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 20:32:09,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 20:32:09,633 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 20:32:09,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 20:32:09,633 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 20:32:09,634 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 20:32:09,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 20:32:09,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 20:32:09,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 20:32:09,922 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 20:32:09,922 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 20:32:09,923 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i [2021-03-11 20:32:09,975 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdfdb5ea6/8a24111a122e4e2aa2fbef248735a203/FLAGb3ab44274 [2021-03-11 20:32:10,368 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 20:32:10,370 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2.i [2021-03-11 20:32:10,378 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdfdb5ea6/8a24111a122e4e2aa2fbef248735a203/FLAGb3ab44274 [2021-03-11 20:32:10,388 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdfdb5ea6/8a24111a122e4e2aa2fbef248735a203 [2021-03-11 20:32:10,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 20:32:10,393 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 20:32:10,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 20:32:10,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 20:32:10,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 20:32:10,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:32:10" (1/1) ... [2021-03-11 20:32:10,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4053ff8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:32:10, skipping insertion in model container [2021-03-11 20:32:10,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:32:10" (1/1) ... [2021-03-11 20:32:10,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 20:32:10,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 20:32:10,661 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2.i[30003,30016] [2021-03-11 20:32:10,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:32:10,679 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 20:32:10,710 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2.i[30003,30016] [2021-03-11 20:32:10,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:32:10,769 INFO L208 MainTranslator]: Completed translation [2021-03-11 20:32:10,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:32:10 WrapperNode [2021-03-11 20:32:10,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 20:32:10,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 20:32:10,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 20:32:10,773 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 20:32:10,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:32:10" (1/1) ... [2021-03-11 20:32:10,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:32:10" (1/1) ... [2021-03-11 20:32:10,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 20:32:10,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 20:32:10,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 20:32:10,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 20:32:10,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:32:10" (1/1) ... [2021-03-11 20:32:10,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:32:10" (1/1) ... [2021-03-11 20:32:10,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:32:10" (1/1) ... [2021-03-11 20:32:10,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:32:10" (1/1) ... [2021-03-11 20:32:10,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:32:10" (1/1) ... [2021-03-11 20:32:10,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:32:10" (1/1) ... [2021-03-11 20:32:10,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:32:10" (1/1) ... [2021-03-11 20:32:10,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 20:32:10,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 20:32:10,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 20:32:10,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 20:32:10,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:32:10" (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 [2021-03-11 20:32:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2021-03-11 20:32:10,907 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2021-03-11 20:32:10,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 20:32:10,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 20:32:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 20:32:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 20:32:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 20:32:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 20:32:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 20:32:10,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 20:32:10,911 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 20:32:11,233 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 20:32:11,234 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-03-11 20:32:11,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:32:11 BoogieIcfgContainer [2021-03-11 20:32:11,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 20:32:11,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 20:32:11,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 20:32:11,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 20:32:11,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 08:32:10" (1/3) ... [2021-03-11 20:32:11,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b14cb79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:32:11, skipping insertion in model container [2021-03-11 20:32:11,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:32:10" (2/3) ... [2021-03-11 20:32:11,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b14cb79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:32:11, skipping insertion in model container [2021-03-11 20:32:11,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:32:11" (3/3) ... [2021-03-11 20:32:11,240 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-2.i [2021-03-11 20:32:11,247 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 20:32:11,252 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 20:32:11,252 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 20:32:11,278 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,278 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,278 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,278 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,278 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,278 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,278 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,279 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,279 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,279 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,279 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,279 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,279 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,279 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,279 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,279 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,280 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,280 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,280 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,280 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,280 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,280 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,281 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,281 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,281 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,281 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,281 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,281 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,281 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,282 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,282 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,282 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,282 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,283 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,283 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,283 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,284 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,284 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,284 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,285 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,286 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,286 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,286 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,287 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,287 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,287 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,287 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,287 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,287 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,288 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,288 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,288 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,288 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,288 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,288 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,288 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,289 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,289 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,291 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,291 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,292 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,292 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,292 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,292 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,294 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,294 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,294 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,294 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,294 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,294 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,295 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,295 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,295 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,295 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,295 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,295 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:32:11,298 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 20:32:11,311 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-11 20:32:11,324 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 20:32:11,325 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 20:32:11,325 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 20:32:11,325 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 20:32:11,325 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 20:32:11,325 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 20:32:11,325 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 20:32:11,325 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 20:32:11,332 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 94 places, 96 transitions, 197 flow [2021-03-11 20:32:11,357 INFO L129 PetriNetUnfolder]: 6/95 cut-off events. [2021-03-11 20:32:11,357 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:32:11,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 95 events. 6/95 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. 0/88 useless extension candidates. Maximal degree in co-relation 75. Up to 3 conditions per place. [2021-03-11 20:32:11,361 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 96 transitions, 197 flow [2021-03-11 20:32:11,364 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 95 transitions, 193 flow [2021-03-11 20:32:11,366 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 20:32:11,373 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 95 transitions, 193 flow [2021-03-11 20:32:11,374 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 95 transitions, 193 flow [2021-03-11 20:32:11,374 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 93 places, 95 transitions, 193 flow [2021-03-11 20:32:11,388 INFO L129 PetriNetUnfolder]: 6/95 cut-off events. [2021-03-11 20:32:11,388 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:32:11,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 95 events. 6/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 75. Up to 3 conditions per place. [2021-03-11 20:32:11,391 INFO L116 LiptonReduction]: Number of co-enabled transitions 2500 [2021-03-11 20:32:13,908 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-11 20:32:14,072 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-11 20:32:14,141 INFO L131 LiptonReduction]: Checked pairs total: 2722 [2021-03-11 20:32:14,141 INFO L133 LiptonReduction]: Total number of compositions: 106 [2021-03-11 20:32:14,142 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2778 [2021-03-11 20:32:14,149 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-11 20:32:14,149 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:32:14,149 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:32:14,149 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-03-11 20:32:14,150 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:32:14,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:32:14,153 INFO L82 PathProgramCache]: Analyzing trace with hash 12057711, now seen corresponding path program 1 times [2021-03-11 20:32:14,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:32:14,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825998243] [2021-03-11 20:32:14,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:32:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:32:14,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:32:14,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:32:14,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:32:14,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:32:14,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:32:14,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825998243] [2021-03-11 20:32:14,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:32:14,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:32:14,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601612834] [2021-03-11 20:32:14,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:32:14,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:32:14,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:32:14,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:32:14,274 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 202 [2021-03-11 20:32:14,276 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 15 transitions, 33 flow. Second operand has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:32:14,276 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:32:14,276 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 202 [2021-03-11 20:32:14,276 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:32:14,293 INFO L129 PetriNetUnfolder]: 3/25 cut-off events. [2021-03-11 20:32:14,293 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:32:14,293 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 25 events. 3/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 69 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 28. Up to 5 conditions per place. [2021-03-11 20:32:14,294 INFO L132 encePairwiseOnDemand]: 199/202 looper letters, 3 selfloop transitions, 2 changer transitions 4/16 dead transitions. [2021-03-11 20:32:14,294 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 16 transitions, 45 flow [2021-03-11 20:32:14,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:32:14,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:32:14,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2021-03-11 20:32:14,303 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8514851485148515 [2021-03-11 20:32:14,304 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 516 transitions. [2021-03-11 20:32:14,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 516 transitions. [2021-03-11 20:32:14,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:32:14,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 516 transitions. [2021-03-11 20:32:14,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:32:14,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:32:14,315 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:32:14,316 INFO L185 Difference]: Start difference. First operand has 17 places, 15 transitions, 33 flow. Second operand 3 states and 516 transitions. [2021-03-11 20:32:14,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 16 transitions, 45 flow [2021-03-11 20:32:14,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 16 transitions, 44 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:32:14,319 INFO L241 Difference]: Finished difference. Result has 19 places, 11 transitions, 32 flow [2021-03-11 20:32:14,320 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=32, PETRI_PLACES=19, PETRI_TRANSITIONS=11} [2021-03-11 20:32:14,320 INFO L335 CegarLoopForPetriNet]: 17 programPoint places, 2 predicate places. [2021-03-11 20:32:14,321 INFO L480 AbstractCegarLoop]: Abstraction has has 19 places, 11 transitions, 32 flow [2021-03-11 20:32:14,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:32:14,321 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:32:14,321 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-11 20:32:14,321 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 20:32:14,321 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:32:14,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:32:14,322 INFO L82 PathProgramCache]: Analyzing trace with hash 373776189, now seen corresponding path program 1 times [2021-03-11 20:32:14,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:32:14,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786563383] [2021-03-11 20:32:14,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:32:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:32:14,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:32:14,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:32:14,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:32:14,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786563383] [2021-03-11 20:32:14,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:32:14,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:32:14,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788157256] [2021-03-11 20:32:14,374 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:32:14,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:32:14,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:32:14,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:32:14,376 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 202 [2021-03-11 20:32:14,376 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 11 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:32:14,376 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:32:14,376 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 202 [2021-03-11 20:32:14,376 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:32:14,381 INFO L129 PetriNetUnfolder]: 1/12 cut-off events. [2021-03-11 20:32:14,381 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:32:14,381 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 12 events. 1/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 2/13 useless extension candidates. Maximal degree in co-relation 16. Up to 4 conditions per place. [2021-03-11 20:32:14,381 INFO L132 encePairwiseOnDemand]: 199/202 looper letters, 1 selfloop transitions, 2 changer transitions 0/11 dead transitions. [2021-03-11 20:32:14,381 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 38 flow [2021-03-11 20:32:14,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:32:14,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:32:14,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 514 transitions. [2021-03-11 20:32:14,383 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8481848184818482 [2021-03-11 20:32:14,383 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 514 transitions. [2021-03-11 20:32:14,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 514 transitions. [2021-03-11 20:32:14,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:32:14,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 514 transitions. [2021-03-11 20:32:14,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:32:14,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:32:14,386 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:32:14,386 INFO L185 Difference]: Start difference. First operand has 19 places, 11 transitions, 32 flow. Second operand 3 states and 514 transitions. [2021-03-11 20:32:14,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 38 flow [2021-03-11 20:32:14,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 34 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:32:14,387 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 36 flow [2021-03-11 20:32:14,387 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-11 20:32:14,387 INFO L335 CegarLoopForPetriNet]: 17 programPoint places, 0 predicate places. [2021-03-11 20:32:14,387 INFO L480 AbstractCegarLoop]: Abstraction has has 17 places, 11 transitions, 36 flow [2021-03-11 20:32:14,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:32:14,388 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:32:14,388 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:32:14,388 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 20:32:14,388 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:32:14,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:32:14,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1625075932, now seen corresponding path program 1 times [2021-03-11 20:32:14,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:32:14,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222457950] [2021-03-11 20:32:14,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:32:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:32:14,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:32:14,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 20:32:14,433 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-11 20:32:14,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 20:32:14,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:32:14,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 20:32:14,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:32:14,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-11 20:32:14,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:32:14,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:32:14,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:32:14,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:32:14,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:32:14,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222457950] [2021-03-11 20:32:14,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:32:14,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 20:32:14,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618837619] [2021-03-11 20:32:14,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 20:32:14,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:32:14,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 20:32:14,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 20:32:14,463 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 202 [2021-03-11 20:32:14,464 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 11 transitions, 36 flow. Second operand has 7 states, 7 states have (on average 119.28571428571429) internal successors, (835), 7 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:32:14,464 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:32:14,464 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 202 [2021-03-11 20:32:14,464 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:32:14,564 INFO L129 PetriNetUnfolder]: 16/43 cut-off events. [2021-03-11 20:32:14,564 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-11 20:32:14,564 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 43 events. 16/43 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 103 event pairs, 1 based on Foata normal form. 1/44 useless extension candidates. Maximal degree in co-relation 98. Up to 26 conditions per place. [2021-03-11 20:32:14,565 INFO L132 encePairwiseOnDemand]: 196/202 looper letters, 11 selfloop transitions, 7 changer transitions 4/23 dead transitions. [2021-03-11 20:32:14,565 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 23 transitions, 108 flow [2021-03-11 20:32:14,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 20:32:14,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 20:32:14,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 967 transitions. [2021-03-11 20:32:14,567 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5983910891089109 [2021-03-11 20:32:14,567 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 967 transitions. [2021-03-11 20:32:14,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 967 transitions. [2021-03-11 20:32:14,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:32:14,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 967 transitions. [2021-03-11 20:32:14,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 120.875) internal successors, (967), 8 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:32:14,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 202.0) internal successors, (1818), 9 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:32:14,572 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 202.0) internal successors, (1818), 9 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:32:14,572 INFO L185 Difference]: Start difference. First operand has 17 places, 11 transitions, 36 flow. Second operand 8 states and 967 transitions. [2021-03-11 20:32:14,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 23 transitions, 108 flow [2021-03-11 20:32:14,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 23 transitions, 104 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:32:14,573 INFO L241 Difference]: Finished difference. Result has 26 places, 16 transitions, 74 flow [2021-03-11 20:32:14,574 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=74, PETRI_PLACES=26, PETRI_TRANSITIONS=16} [2021-03-11 20:32:14,574 INFO L335 CegarLoopForPetriNet]: 17 programPoint places, 9 predicate places. [2021-03-11 20:32:14,574 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 16 transitions, 74 flow [2021-03-11 20:32:14,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 119.28571428571429) internal successors, (835), 7 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:32:14,574 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:32:14,574 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:32:14,575 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 20:32:14,575 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:32:14,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:32:14,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1683707221, now seen corresponding path program 1 times [2021-03-11 20:32:14,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:32:14,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231924467] [2021-03-11 20:32:14,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:32:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:32:14,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:32:14,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:32:14,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:32:14,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:32:14,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:32:14,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231924467] [2021-03-11 20:32:14,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:32:14,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:32:14,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807031500] [2021-03-11 20:32:14,606 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:32:14,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:32:14,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:32:14,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:32:14,607 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 202 [2021-03-11 20:32:14,607 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:32:14,607 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:32:14,607 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 202 [2021-03-11 20:32:14,607 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:32:14,613 INFO L129 PetriNetUnfolder]: 2/20 cut-off events. [2021-03-11 20:32:14,613 INFO L130 PetriNetUnfolder]: For 12/15 co-relation queries the response was YES. [2021-03-11 20:32:14,613 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 20 events. 2/20 cut-off events. For 12/15 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 2/22 useless extension candidates. Maximal degree in co-relation 52. Up to 7 conditions per place. [2021-03-11 20:32:14,613 INFO L132 encePairwiseOnDemand]: 200/202 looper letters, 4 selfloop transitions, 0 changer transitions 1/16 dead transitions. [2021-03-11 20:32:14,614 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 16 transitions, 84 flow [2021-03-11 20:32:14,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:32:14,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:32:14,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2021-03-11 20:32:14,615 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8498349834983498 [2021-03-11 20:32:14,615 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2021-03-11 20:32:14,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2021-03-11 20:32:14,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:32:14,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2021-03-11 20:32:14,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:32:14,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:32:14,617 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:32:14,618 INFO L185 Difference]: Start difference. First operand has 26 places, 16 transitions, 74 flow. Second operand 3 states and 515 transitions. [2021-03-11 20:32:14,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 16 transitions, 84 flow [2021-03-11 20:32:14,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 16 transitions, 82 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-11 20:32:14,619 INFO L241 Difference]: Finished difference. Result has 26 places, 15 transitions, 70 flow [2021-03-11 20:32:14,619 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=26, PETRI_TRANSITIONS=15} [2021-03-11 20:32:14,619 INFO L335 CegarLoopForPetriNet]: 17 programPoint places, 9 predicate places. [2021-03-11 20:32:14,619 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 15 transitions, 70 flow [2021-03-11 20:32:14,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:32:14,619 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:32:14,619 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:32:14,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 20:32:14,619 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:32:14,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:32:14,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1897740316, now seen corresponding path program 2 times [2021-03-11 20:32:14,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:32:14,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270570052] [2021-03-11 20:32:14,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:32:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:32:14,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:32:14,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:32:14,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:32:14,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 20:32:14,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:32:14,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 20:32:14,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:32:14,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:32:14,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:32:14,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:32:14,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:32:14,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:32:14,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:32:14,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270570052] [2021-03-11 20:32:14,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:32:14,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 20:32:14,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462282588] [2021-03-11 20:32:14,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 20:32:14,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:32:14,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 20:32:14,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-11 20:32:14,663 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 202 [2021-03-11 20:32:14,664 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 15 transitions, 70 flow. Second operand has 7 states, 7 states have (on average 137.0) internal successors, (959), 7 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:32:14,664 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:32:14,664 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 202 [2021-03-11 20:32:14,665 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:32:14,716 INFO L129 PetriNetUnfolder]: 7/32 cut-off events. [2021-03-11 20:32:14,716 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-03-11 20:32:14,717 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 32 events. 7/32 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 73 event pairs, 0 based on Foata normal form. 4/36 useless extension candidates. Maximal degree in co-relation 96. Up to 11 conditions per place. [2021-03-11 20:32:14,717 INFO L132 encePairwiseOnDemand]: 197/202 looper letters, 7 selfloop transitions, 5 changer transitions 4/21 dead transitions. [2021-03-11 20:32:14,717 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 21 transitions, 123 flow [2021-03-11 20:32:14,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 20:32:14,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 20:32:14,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 967 transitions. [2021-03-11 20:32:14,721 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6838755304101839 [2021-03-11 20:32:14,723 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 967 transitions. [2021-03-11 20:32:14,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 967 transitions. [2021-03-11 20:32:14,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:32:14,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 967 transitions. [2021-03-11 20:32:14,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 138.14285714285714) internal successors, (967), 7 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:32:14,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 202.0) internal successors, (1616), 8 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:32:14,728 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 202.0) internal successors, (1616), 8 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:32:14,728 INFO L185 Difference]: Start difference. First operand has 26 places, 15 transitions, 70 flow. Second operand 7 states and 967 transitions. [2021-03-11 20:32:14,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 21 transitions, 123 flow [2021-03-11 20:32:14,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 21 transitions, 119 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-11 20:32:14,729 INFO L241 Difference]: Finished difference. Result has 33 places, 15 transitions, 93 flow [2021-03-11 20:32:14,729 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=93, PETRI_PLACES=33, PETRI_TRANSITIONS=15} [2021-03-11 20:32:14,730 INFO L335 CegarLoopForPetriNet]: 17 programPoint places, 16 predicate places. [2021-03-11 20:32:14,730 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 15 transitions, 93 flow [2021-03-11 20:32:14,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 137.0) internal successors, (959), 7 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:32:14,730 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:32:14,730 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:32:14,730 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 20:32:14,730 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:32:14,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:32:14,731 INFO L82 PathProgramCache]: Analyzing trace with hash -599073892, now seen corresponding path program 3 times [2021-03-11 20:32:14,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:32:14,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071491777] [2021-03-11 20:32:14,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:32:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 20:32:14,755 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 20:32:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 20:32:14,762 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 20:32:14,775 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-11 20:32:14,775 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-03-11 20:32:14,775 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 20:32:14,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 08:32:14 BasicIcfg [2021-03-11 20:32:14,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 20:32:14,794 INFO L168 Benchmark]: Toolchain (without parser) took 4403.43 ms. Allocated memory was 367.0 MB in the beginning and 440.4 MB in the end (delta: 73.4 MB). Free memory was 330.4 MB in the beginning and 365.6 MB in the end (delta: -35.2 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.0 GB. [2021-03-11 20:32:14,794 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 367.0 MB. Free memory is still 348.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:32:14,795 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.38 ms. Allocated memory is still 367.0 MB. Free memory was 329.8 MB in the beginning and 328.9 MB in the end (delta: 920.6 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. [2021-03-11 20:32:14,795 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.01 ms. Allocated memory is still 367.0 MB. Free memory was 328.9 MB in the beginning and 326.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:32:14,795 INFO L168 Benchmark]: Boogie Preprocessor took 27.56 ms. Allocated memory is still 367.0 MB. Free memory was 326.8 MB in the beginning and 325.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:32:14,796 INFO L168 Benchmark]: RCFGBuilder took 385.12 ms. Allocated memory is still 367.0 MB. Free memory was 325.7 MB in the beginning and 296.4 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2021-03-11 20:32:14,796 INFO L168 Benchmark]: TraceAbstraction took 3557.55 ms. Allocated memory was 367.0 MB in the beginning and 440.4 MB in the end (delta: 73.4 MB). Free memory was 296.4 MB in the beginning and 365.6 MB in the end (delta: -69.3 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.0 GB. [2021-03-11 20:32:14,798 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 367.0 MB. Free memory is still 348.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 377.38 ms. Allocated memory is still 367.0 MB. Free memory was 329.8 MB in the beginning and 328.9 MB in the end (delta: 920.6 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 49.01 ms. Allocated memory is still 367.0 MB. Free memory was 328.9 MB in the beginning and 326.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 27.56 ms. Allocated memory is still 367.0 MB. Free memory was 326.8 MB in the beginning and 325.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 385.12 ms. Allocated memory is still 367.0 MB. Free memory was 325.7 MB in the beginning and 296.4 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3557.55 ms. Allocated memory was 367.0 MB in the beginning and 440.4 MB in the end (delta: 73.4 MB). Free memory was 296.4 MB in the beginning and 365.6 MB in the end (delta: -69.3 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2767.0ms, 93 PlacesBefore, 17 PlacesAfterwards, 95 TransitionsBefore, 15 TransitionsAfterwards, 2500 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 63 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 21 ConcurrentYvCompositions, 4 ChoiceCompositions, 106 TotalNumberOfCompositions, 2722 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2340, positive: 2266, positive conditional: 0, positive unconditional: 2266, negative: 74, negative conditional: 0, negative unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1876, positive: 1843, positive conditional: 0, positive unconditional: 1843, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1876, positive: 1836, positive conditional: 0, positive unconditional: 1836, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 40, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 156, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 135, negative conditional: 0, negative unconditional: 135, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2340, positive: 423, positive conditional: 0, positive unconditional: 423, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 1876, unknown conditional: 0, unknown unconditional: 1876] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - CounterExampleResult [Line: 690]: a call to reach_error is reachable a call to reach_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; [L755] 0 pthread_t t; [L756] 0 pendingIo = 1 [L757] 0 stoppingFlag = 0 [L758] 0 stoppingEvent = 0 [L759] 0 stopped = 0 [L760] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L734] 0 int status; [L703] 0 int lsf = stoppingFlag; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L705] COND FALSE 0 !(\read(lsf)) [L709] 0 int lp = pendingIo; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L744] 1 stoppingFlag = 1 [L725] 1 int pending; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L719] 1 pendingIo-- [L720] 1 int tmp = pendingIo; [L722] 1 return tmp; [L726] 1 pending = dec() VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L712] 0 pendingIo = lp + 1 [L715] 0 return 0; [L727] COND TRUE 1 pending == 0 [L729] 1 stoppingEvent = 1 [L748] 1 int lse = stoppingEvent; [L686] COND FALSE 1 !(!cond) [L751] 1 stopped = 1 [L752] 1 return 0; [L735] 0 status = BCSP_IoIncrement() [L736] COND TRUE 0 status == 0 [L689] COND TRUE 0 !(cond) [L690] 0 reach_error() VAL [pendingIo=2, stopped=1, stoppingEvent=1, stoppingFlag=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 91 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 3453.9ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 254.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2821.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 26 SDtfs, 18 SDslu, 32 SDs, 0 SdLazy, 93 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 57.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 109.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=5, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.0ms SsaConstructionTime, 62.2ms SatisfiabilityAnalysisTime, 177.6ms InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 133 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...