/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-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/atomic/09b-return-after-end.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-29 03:39:04,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-29 03:39:04,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-29 03:39:04,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-29 03:39:04,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-29 03:39:04,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-29 03:39:04,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-29 03:39:04,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-29 03:39:04,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-29 03:39:04,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-29 03:39:04,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-29 03:39:04,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-29 03:39:04,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-29 03:39:04,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-29 03:39:04,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-29 03:39:04,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-29 03:39:04,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-29 03:39:04,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-29 03:39:04,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-29 03:39:04,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-29 03:39:04,778 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-29 03:39:04,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-29 03:39:04,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-29 03:39:04,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-29 03:39:04,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-29 03:39:04,798 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-29 03:39:04,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-29 03:39:04,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-29 03:39:04,802 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-29 03:39:04,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-29 03:39:04,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-29 03:39:04,805 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-29 03:39:04,805 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-29 03:39:04,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-29 03:39:04,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-29 03:39:04,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-29 03:39:04,808 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-RepeatedSemanticLbeWithPredicates.epf [2021-04-29 03:39:04,858 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-29 03:39:04,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-29 03:39:04,863 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-29 03:39:04,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-29 03:39:04,863 INFO L138 SettingsManager]: * Use SBE=true [2021-04-29 03:39:04,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-29 03:39:04,864 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-29 03:39:04,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-29 03:39:04,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-29 03:39:04,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-29 03:39:04,866 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-29 03:39:04,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-29 03:39:04,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-29 03:39:04,866 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-29 03:39:04,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-29 03:39:04,867 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-29 03:39:04,867 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-29 03:39:04,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-29 03:39:04,868 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-29 03:39:04,868 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-29 03:39:04,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-29 03:39:04,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 03:39:04,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-29 03:39:04,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-29 03:39:04,869 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-29 03:39:04,869 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-29 03:39:04,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-29 03:39:04,870 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-29 03:39:04,870 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-29 03:39:04,870 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-29 03:39:04,870 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-29 03:39:05,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-29 03:39:05,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-29 03:39:05,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-29 03:39:05,275 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-29 03:39:05,276 INFO L275 PluginConnector]: CDTParser initialized [2021-04-29 03:39:05,277 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/09b-return-after-end.c [2021-04-29 03:39:05,365 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67ea39ec2/26e15a5b25714d4a8c26a18c9674ceec/FLAGe899375d3 [2021-04-29 03:39:05,939 INFO L306 CDTParser]: Found 1 translation units. [2021-04-29 03:39:05,940 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/09b-return-after-end.c [2021-04-29 03:39:05,940 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-04-29 03:39:05,986 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67ea39ec2/26e15a5b25714d4a8c26a18c9674ceec/FLAGe899375d3 [2021-04-29 03:39:06,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67ea39ec2/26e15a5b25714d4a8c26a18c9674ceec [2021-04-29 03:39:06,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-29 03:39:06,361 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-29 03:39:06,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-29 03:39:06,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-29 03:39:06,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-29 03:39:06,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 03:39:06" (1/1) ... [2021-04-29 03:39:06,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74b0be7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:39:06, skipping insertion in model container [2021-04-29 03:39:06,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 03:39:06" (1/1) ... [2021-04-29 03:39:06,377 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-29 03:39:06,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-29 03:39:06,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-29 03:39:06,566 INFO L203 MainTranslator]: Completed pre-run [2021-04-29 03:39:06,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-29 03:39:06,598 INFO L208 MainTranslator]: Completed translation [2021-04-29 03:39:06,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:39:06 WrapperNode [2021-04-29 03:39:06,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-29 03:39:06,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-29 03:39:06,600 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-29 03:39:06,600 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-29 03:39:06,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:39:06" (1/1) ... [2021-04-29 03:39:06,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:39:06" (1/1) ... [2021-04-29 03:39:06,636 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-29 03:39:06,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-29 03:39:06,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-29 03:39:06,637 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-29 03:39:06,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:39:06" (1/1) ... [2021-04-29 03:39:06,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:39:06" (1/1) ... [2021-04-29 03:39:06,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:39:06" (1/1) ... [2021-04-29 03:39:06,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:39:06" (1/1) ... [2021-04-29 03:39:06,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:39:06" (1/1) ... [2021-04-29 03:39:06,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:39:06" (1/1) ... [2021-04-29 03:39:06,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:39:06" (1/1) ... [2021-04-29 03:39:06,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-29 03:39:06,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-29 03:39:06,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-29 03:39:06,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-29 03:39:06,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:39:06" (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 [2021-04-29 03:39:06,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-29 03:39:06,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-04-29 03:39:06,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-04-29 03:39:06,764 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-04-29 03:39:06,764 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-04-29 03:39:06,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-29 03:39:06,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-29 03:39:06,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-29 03:39:06,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-29 03:39:06,768 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-29 03:39:07,122 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-29 03:39:07,123 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-04-29 03:39:07,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 03:39:07 BoogieIcfgContainer [2021-04-29 03:39:07,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-29 03:39:07,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-29 03:39:07,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-29 03:39:07,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-29 03:39:07,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 03:39:06" (1/3) ... [2021-04-29 03:39:07,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@762f5d2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 03:39:07, skipping insertion in model container [2021-04-29 03:39:07,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:39:06" (2/3) ... [2021-04-29 03:39:07,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@762f5d2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 03:39:07, skipping insertion in model container [2021-04-29 03:39:07,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 03:39:07" (3/3) ... [2021-04-29 03:39:07,144 INFO L111 eAbstractionObserver]: Analyzing ICFG 09b-return-after-end.c [2021-04-29 03:39:07,163 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-29 03:39:07,167 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-29 03:39:07,168 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-29 03:39:07,195 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:39:07,195 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:39:07,195 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:39:07,196 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:39:07,196 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:39:07,196 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:39:07,196 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:39:07,197 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:39:07,197 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:39:07,197 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:39:07,198 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:39:07,198 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:39:07,198 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:39:07,198 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:39:07,199 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:39:07,199 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:39:07,201 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:39:07,202 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:39:07,202 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:39:07,202 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:39:07,206 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-29 03:39:07,229 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-04-29 03:39:07,256 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-29 03:39:07,256 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-29 03:39:07,256 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-29 03:39:07,256 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-29 03:39:07,256 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-29 03:39:07,257 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-29 03:39:07,257 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-29 03:39:07,257 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-29 03:39:07,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 26 transitions, 57 flow [2021-04-29 03:39:07,295 INFO L129 PetriNetUnfolder]: 1/25 cut-off events. [2021-04-29 03:39:07,296 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 03:39:07,299 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 25 events. 1/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2021-04-29 03:39:07,299 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 26 transitions, 57 flow [2021-04-29 03:39:07,304 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 25 transitions, 53 flow [2021-04-29 03:39:07,305 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:39:07,322 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 25 transitions, 53 flow [2021-04-29 03:39:07,326 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 25 transitions, 53 flow [2021-04-29 03:39:07,327 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 28 places, 25 transitions, 53 flow [2021-04-29 03:39:07,337 INFO L129 PetriNetUnfolder]: 1/25 cut-off events. [2021-04-29 03:39:07,337 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 03:39:07,338 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 25 events. 1/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2021-04-29 03:39:07,340 INFO L146 LiptonReduction]: Number of co-enabled transitions 112 [2021-04-29 03:39:09,719 INFO L158 LiptonReduction]: Checked pairs total: 657 [2021-04-29 03:39:09,719 INFO L160 LiptonReduction]: Total number of compositions: 33 [2021-04-29 03:39:09,724 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2420 [2021-04-29 03:39:09,744 INFO L129 PetriNetUnfolder]: 1/22 cut-off events. [2021-04-29 03:39:09,745 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 03:39:09,745 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:39:09,746 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-04-29 03:39:09,746 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 03:39:09,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:39:09,754 INFO L82 PathProgramCache]: Analyzing trace with hash 3757803, now seen corresponding path program 1 times [2021-04-29 03:39:09,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:39:09,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613020590] [2021-04-29 03:39:09,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:39:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:39:09,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:39:09,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:39:09,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:39:09,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613020590] [2021-04-29 03:39:09,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:39:09,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-29 03:39:09,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48194503] [2021-04-29 03:39:09,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 03:39:09,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:39:09,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 03:39:09,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 03:39:09,949 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 59 [2021-04-29 03:39:09,951 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-04-29 03:39:09,951 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:39:09,951 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 59 [2021-04-29 03:39:09,953 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:39:10,040 INFO L129 PetriNetUnfolder]: 30/90 cut-off events. [2021-04-29 03:39:10,040 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 03:39:10,041 INFO L84 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 90 events. 30/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 453 event pairs, 15 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 153. Up to 44 conditions per place. [2021-04-29 03:39:10,042 INFO L132 encePairwiseOnDemand]: 49/59 looper letters, 1 selfloop transitions, 4 changer transitions 25/33 dead transitions. [2021-04-29 03:39:10,042 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 33 transitions, 115 flow [2021-04-29 03:39:10,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 03:39:10,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 03:39:10,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2021-04-29 03:39:10,057 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6610169491525424 [2021-04-29 03:39:10,057 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 117 transitions. [2021-04-29 03:39:10,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 117 transitions. [2021-04-29 03:39:10,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:39:10,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 117 transitions. [2021-04-29 03:39:10,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2021-04-29 03:39:10,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2021-04-29 03:39:10,070 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2021-04-29 03:39:10,072 INFO L185 Difference]: Start difference. First operand has 31 places, 28 transitions, 59 flow. Second operand 3 states and 117 transitions. [2021-04-29 03:39:10,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 33 transitions, 115 flow [2021-04-29 03:39:10,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 33 transitions, 114 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 03:39:10,078 INFO L241 Difference]: Finished difference. Result has 33 places, 8 transitions, 32 flow [2021-04-29 03:39:10,080 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=32, PETRI_PLACES=33, PETRI_TRANSITIONS=8} [2021-04-29 03:39:10,081 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 2 predicate places. [2021-04-29 03:39:10,081 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:39:10,081 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 8 transitions, 32 flow [2021-04-29 03:39:10,082 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 8 transitions, 32 flow [2021-04-29 03:39:10,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 14 places, 8 transitions, 32 flow [2021-04-29 03:39:10,085 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-04-29 03:39:10,085 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 03:39:10,085 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 10 events. 0/10 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. 0/8 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-04-29 03:39:10,086 INFO L146 LiptonReduction]: Number of co-enabled transitions 8 [2021-04-29 03:39:10,108 INFO L158 LiptonReduction]: Checked pairs total: 10 [2021-04-29 03:39:10,108 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:39:10,109 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 28 [2021-04-29 03:39:10,111 INFO L480 AbstractCegarLoop]: Abstraction has has 14 places, 8 transitions, 32 flow [2021-04-29 03:39:10,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-04-29 03:39:10,111 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:39:10,111 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-04-29 03:39:10,112 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-29 03:39:10,112 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 03:39:10,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:39:10,113 INFO L82 PathProgramCache]: Analyzing trace with hash -683690327, now seen corresponding path program 1 times [2021-04-29 03:39:10,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:39:10,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564782041] [2021-04-29 03:39:10,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:39:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:39:10,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:39:10,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:39:10,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:39:10,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:39:10,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:39:10,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:39:10,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:39:10,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564782041] [2021-04-29 03:39:10,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:39:10,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 03:39:10,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854542737] [2021-04-29 03:39:10,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 03:39:10,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:39:10,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 03:39:10,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 03:39:10,148 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 59 [2021-04-29 03:39:10,149 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 8 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2021-04-29 03:39:10,149 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:39:10,149 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 59 [2021-04-29 03:39:10,149 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:39:10,171 INFO L129 PetriNetUnfolder]: 3/17 cut-off events. [2021-04-29 03:39:10,172 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-04-29 03:39:10,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 17 events. 3/17 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 35 event pairs, 0 based on Foata normal form. 1/14 useless extension candidates. Maximal degree in co-relation 42. Up to 10 conditions per place. [2021-04-29 03:39:10,172 INFO L132 encePairwiseOnDemand]: 57/59 looper letters, 8 selfloop transitions, 1 changer transitions 0/11 dead transitions. [2021-04-29 03:39:10,173 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 11 transitions, 65 flow [2021-04-29 03:39:10,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 03:39:10,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 03:39:10,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2021-04-29 03:39:10,175 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6497175141242938 [2021-04-29 03:39:10,175 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2021-04-29 03:39:10,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2021-04-29 03:39:10,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:39:10,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2021-04-29 03:39:10,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2021-04-29 03:39:10,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2021-04-29 03:39:10,179 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2021-04-29 03:39:10,179 INFO L185 Difference]: Start difference. First operand has 14 places, 8 transitions, 32 flow. Second operand 3 states and 115 transitions. [2021-04-29 03:39:10,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 11 transitions, 65 flow [2021-04-29 03:39:10,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 11 transitions, 51 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-29 03:39:10,180 INFO L241 Difference]: Finished difference. Result has 15 places, 8 transitions, 29 flow [2021-04-29 03:39:10,181 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=29, PETRI_PLACES=15, PETRI_TRANSITIONS=8} [2021-04-29 03:39:10,181 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, -16 predicate places. [2021-04-29 03:39:10,182 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:39:10,182 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 15 places, 8 transitions, 29 flow [2021-04-29 03:39:10,182 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 15 places, 8 transitions, 29 flow [2021-04-29 03:39:10,183 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 15 places, 8 transitions, 29 flow [2021-04-29 03:39:10,185 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-04-29 03:39:10,186 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 03:39:10,186 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 11 events. 0/11 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 16 event pairs, 0 based on Foata normal form. 0/8 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-04-29 03:39:10,186 INFO L146 LiptonReduction]: Number of co-enabled transitions 6 [2021-04-29 03:39:10,192 INFO L158 LiptonReduction]: Checked pairs total: 3 [2021-04-29 03:39:10,192 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:39:10,193 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12 [2021-04-29 03:39:10,194 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 8 transitions, 29 flow [2021-04-29 03:39:10,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2021-04-29 03:39:10,195 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:39:10,195 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-04-29 03:39:10,195 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-29 03:39:10,196 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 03:39:10,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:39:10,196 INFO L82 PathProgramCache]: Analyzing trace with hash -683628947, now seen corresponding path program 2 times [2021-04-29 03:39:10,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:39:10,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623402039] [2021-04-29 03:39:10,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:39:10,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:39:10,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:39:10,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:39:10,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:39:10,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-29 03:39:10,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:39:10,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-29 03:39:10,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:39:10,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623402039] [2021-04-29 03:39:10,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:39:10,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 03:39:10,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22018330] [2021-04-29 03:39:10,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 03:39:10,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:39:10,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 03:39:10,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 03:39:10,248 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2021-04-29 03:39:10,248 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 8 transitions, 29 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2021-04-29 03:39:10,248 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:39:10,249 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2021-04-29 03:39:10,249 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:39:10,297 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-04-29 03:39:10,298 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2021-04-29 03:39:10,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 17 events. 0/17 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 34 event pairs, 0 based on Foata normal form. 3/16 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2021-04-29 03:39:10,298 INFO L132 encePairwiseOnDemand]: 53/59 looper letters, 2 selfloop transitions, 5 changer transitions 3/11 dead transitions. [2021-04-29 03:39:10,298 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 58 flow [2021-04-29 03:39:10,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 03:39:10,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 03:39:10,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2021-04-29 03:39:10,301 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4872881355932203 [2021-04-29 03:39:10,301 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 115 transitions. [2021-04-29 03:39:10,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 115 transitions. [2021-04-29 03:39:10,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:39:10,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 115 transitions. [2021-04-29 03:39:10,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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) [2021-04-29 03:39:10,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 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) [2021-04-29 03:39:10,304 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 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) [2021-04-29 03:39:10,304 INFO L185 Difference]: Start difference. First operand has 15 places, 8 transitions, 29 flow. Second operand 4 states and 115 transitions. [2021-04-29 03:39:10,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 58 flow [2021-04-29 03:39:10,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 11 transitions, 57 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 03:39:10,306 INFO L241 Difference]: Finished difference. Result has 18 places, 8 transitions, 44 flow [2021-04-29 03:39:10,306 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=44, PETRI_PLACES=18, PETRI_TRANSITIONS=8} [2021-04-29 03:39:10,306 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, -13 predicate places. [2021-04-29 03:39:10,306 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:39:10,307 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 18 places, 8 transitions, 44 flow [2021-04-29 03:39:10,307 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 18 places, 8 transitions, 44 flow [2021-04-29 03:39:10,307 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 18 places, 8 transitions, 44 flow [2021-04-29 03:39:10,310 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-04-29 03:39:10,310 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-04-29 03:39:10,311 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 11 events. 0/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 0/9 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-04-29 03:39:10,311 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-29 03:39:10,312 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 03:39:10,312 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:39:10,312 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-04-29 03:39:10,314 INFO L480 AbstractCegarLoop]: Abstraction has has 18 places, 8 transitions, 44 flow [2021-04-29 03:39:10,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2021-04-29 03:39:10,314 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:39:10,314 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-04-29 03:39:10,314 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-29 03:39:10,315 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 03:39:10,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:39:10,315 INFO L82 PathProgramCache]: Analyzing trace with hash -683632667, now seen corresponding path program 3 times [2021-04-29 03:39:10,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:39:10,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557191579] [2021-04-29 03:39:10,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:39:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-04-29 03:39:10,326 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-04-29 03:39:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-04-29 03:39:10,334 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-04-29 03:39:10,353 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-04-29 03:39:10,354 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-04-29 03:39:10,354 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-29 03:39:10,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 03:39:10 BasicIcfg [2021-04-29 03:39:10,378 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-29 03:39:10,380 INFO L168 Benchmark]: Toolchain (without parser) took 4064.03 ms. Allocated memory is still 302.0 MB. Free memory was 275.6 MB in the beginning and 182.9 MB in the end (delta: 92.8 MB). Peak memory consumption was 95.7 MB. Max. memory is 16.0 GB. [2021-04-29 03:39:10,380 INFO L168 Benchmark]: CDTParser took 0.96 ms. Allocated memory is still 302.0 MB. Free memory was 273.0 MB in the beginning and 272.9 MB in the end (delta: 137.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 03:39:10,381 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.87 ms. Allocated memory is still 302.0 MB. Free memory was 272.4 MB in the beginning and 263.9 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-04-29 03:39:10,382 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.76 ms. Allocated memory is still 302.0 MB. Free memory was 263.9 MB in the beginning and 262.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-29 03:39:10,383 INFO L168 Benchmark]: Boogie Preprocessor took 21.14 ms. Allocated memory is still 302.0 MB. Free memory was 262.5 MB in the beginning and 261.7 MB in the end (delta: 754.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 03:39:10,383 INFO L168 Benchmark]: RCFGBuilder took 469.54 ms. Allocated memory is still 302.0 MB. Free memory was 261.5 MB in the beginning and 281.4 MB in the end (delta: -19.9 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.0 GB. [2021-04-29 03:39:10,384 INFO L168 Benchmark]: TraceAbstraction took 3247.53 ms. Allocated memory is still 302.0 MB. Free memory was 281.4 MB in the beginning and 182.9 MB in the end (delta: 98.6 MB). Peak memory consumption was 99.6 MB. Max. memory is 16.0 GB. [2021-04-29 03:39:10,388 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.96 ms. Allocated memory is still 302.0 MB. Free memory was 273.0 MB in the beginning and 272.9 MB in the end (delta: 137.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 235.87 ms. Allocated memory is still 302.0 MB. Free memory was 272.4 MB in the beginning and 263.9 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 36.76 ms. Allocated memory is still 302.0 MB. Free memory was 263.9 MB in the beginning and 262.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 21.14 ms. Allocated memory is still 302.0 MB. Free memory was 262.5 MB in the beginning and 261.7 MB in the end (delta: 754.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 469.54 ms. Allocated memory is still 302.0 MB. Free memory was 261.5 MB in the beginning and 281.4 MB in the end (delta: -19.9 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3247.53 ms. Allocated memory is still 302.0 MB. Free memory was 281.4 MB in the beginning and 182.9 MB in the end (delta: 98.6 MB). Peak memory consumption was 99.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2393.6ms, 28 PlacesBefore, 31 PlacesAfterwards, 25 TransitionsBefore, 28 TransitionsAfterwards, 112 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 13 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 33 TotalNumberOfCompositions, 657 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 251, positive: 187, positive conditional: 187, positive unconditional: 0, negative: 64, negative conditional: 64, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 114, positive: 93, positive conditional: 0, positive unconditional: 93, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 114, positive: 93, positive conditional: 0, positive unconditional: 93, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 114, positive: 90, positive conditional: 0, positive unconditional: 90, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 24, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 162, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 142, negative conditional: 0, negative unconditional: 142, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 251, positive: 94, positive conditional: 94, positive unconditional: 0, negative: 43, negative conditional: 43, negative unconditional: 0, unknown: 114, unknown conditional: 114, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 114, Positive cache size: 93, Positive conditional cache size: 93, Positive unconditional cache size: 0, Negative cache size: 21, Negative conditional cache size: 21, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 26.8ms, 33 PlacesBefore, 14 PlacesAfterwards, 8 TransitionsBefore, 8 TransitionsAfterwards, 8 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 10 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 19, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 19, negative conditional: 19, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 7, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 3, unknown conditional: 3, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 117, Positive cache size: 93, Positive conditional cache size: 93, Positive unconditional cache size: 0, Negative cache size: 24, Negative conditional cache size: 24, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.3ms, 15 PlacesBefore, 15 PlacesAfterwards, 8 TransitionsBefore, 8 TransitionsAfterwards, 6 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 1, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 118, Positive cache size: 93, Positive conditional cache size: 93, Positive unconditional cache size: 0, Negative cache size: 25, Negative conditional cache size: 25, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.1ms, 18 PlacesBefore, 18 PlacesAfterwards, 8 TransitionsBefore, 8 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 118, Positive cache size: 93, Positive conditional cache size: 93, Positive unconditional cache size: 0, Negative cache size: 25, Negative conditional cache size: 25, Negative unconditional cache size: 0 - CounterExampleResult [Line: 36]: assertion can be violated assertion can be violated We found a FailurePath: [L15] 0 int x = 1; [L16] 0 int y = 1; [L31] 0 pthread_t threadId; [L32] FCALL, FORK 0 pthread_create(&threadId, NULL, &foo, NULL) VAL [arg={0:0}, x=1, y=1] [L20] COND TRUE 1 \read(y) VAL [arg={0:0}, arg={0:0}, x=1, y=1] [L34] 0 y = 0 VAL [arg={0:0}, arg={0:0}, x=1, y=0] [L22] 1 x = y [L23] 1 return (void*) NULL; VAL [\result={0:0}, arg={0:0}, arg={0:0}, x=0, y=0] [L36] 0 CodeAnnotStmt[Assertion] VAL [\result={0:0}, arg={0:0}, arg={0:0}, x=0, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 9.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 3104.8ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 232.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2478.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 22 SDtfs, 9 SDslu, 1 SDs, 0 SdLazy, 34 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 83.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=0, InterpolantAutomatonStates: 10, 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: 8.5ms SsaConstructionTime, 42.0ms SatisfiabilityAnalysisTime, 109.7ms InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...