/usr/bin/java -Xmx8000000000 -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-NoLbe-OGIterative-CovSimpl.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 04:37:48,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 04:37:48,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 04:37:48,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-13 04:37:48,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-13 04:37:48,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-13 04:37:48,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-13 04:37:48,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-13 04:37:48,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-13 04:37:48,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-13 04:37:48,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-13 04:37:48,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-13 04:37:48,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 04:37:48,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 04:37:48,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 04:37:48,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 04:37:48,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 04:37:48,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 04:37:48,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 04:37:48,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 04:37:48,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 04:37:48,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 04:37:48,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 04:37:48,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 04:37:48,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 04:37:48,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 04:37:48,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 04:37:48,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 04:37:48,659 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-NoLbe-OGIterative-CovSimpl.epf [2021-08-13 04:37:48,691 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 04:37:48,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 04:37:48,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 04:37:48,694 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 04:37:48,694 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 04:37:48,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 04:37:48,694 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 04:37:48,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 04:37:48,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 04:37:48,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 04:37:48,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 04:37:48,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 04:37:48,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 04:37:48,695 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 04:37:48,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 04:37:48,696 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 04:37:48,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 04:37:48,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 04:37:48,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 04:37:48,696 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 04:37:48,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 04:37:48,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 04:37:48,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 04:37:48,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 04:37:48,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 04:37:48,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 04:37:48,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 04:37:48,697 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 04:37:48,697 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 04:37:48,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 04:37:48,697 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 04:37:48,698 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 04:37:48,698 INFO L138 SettingsManager]: * Simplify away covered predicates in OwickiGries annotation=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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 04:37:48,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 04:37:48,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 04:37:48,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 04:37:48,968 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-13 04:37:48,968 INFO L275 PluginConnector]: CDTParser initialized [2021-08-13 04:37:48,969 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/dekker.i [2021-08-13 04:37:49,025 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4828c8e6/4b7cb8356d2645f290f14039c11e2dfe/FLAG13c55b127 [2021-08-13 04:37:49,443 INFO L306 CDTParser]: Found 1 translation units. [2021-08-13 04:37:49,443 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i [2021-08-13 04:37:49,450 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4828c8e6/4b7cb8356d2645f290f14039c11e2dfe/FLAG13c55b127 [2021-08-13 04:37:49,460 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4828c8e6/4b7cb8356d2645f290f14039c11e2dfe [2021-08-13 04:37:49,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 04:37:49,463 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-13 04:37:49,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-13 04:37:49,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-13 04:37:49,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-13 04:37:49,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 04:37:49" (1/1) ... [2021-08-13 04:37:49,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@652bc14e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:37:49, skipping insertion in model container [2021-08-13 04:37:49,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 04:37:49" (1/1) ... [2021-08-13 04:37:49,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-13 04:37:49,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-13 04:37:49,610 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-08-13 04:37:49,715 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[31403,31416] [2021-08-13 04:37:49,724 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[32483,32496] [2021-08-13 04:37:49,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 04:37:49,739 INFO L203 MainTranslator]: Completed pre-run [2021-08-13 04:37:49,764 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-08-13 04:37:49,774 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[31403,31416] [2021-08-13 04:37:49,776 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[32483,32496] [2021-08-13 04:37:49,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 04:37:49,821 INFO L208 MainTranslator]: Completed translation [2021-08-13 04:37:49,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:37:49 WrapperNode [2021-08-13 04:37:49,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-13 04:37:49,822 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 04:37:49,823 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 04:37:49,823 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 04:37:49,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:37:49" (1/1) ... [2021-08-13 04:37:49,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:37:49" (1/1) ... [2021-08-13 04:37:49,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 04:37:49,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 04:37:49,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 04:37:49,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 04:37:49,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:37:49" (1/1) ... [2021-08-13 04:37:49,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:37:49" (1/1) ... [2021-08-13 04:37:49,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:37:49" (1/1) ... [2021-08-13 04:37:49,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:37:49" (1/1) ... [2021-08-13 04:37:49,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:37:49" (1/1) ... [2021-08-13 04:37:49,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:37:49" (1/1) ... [2021-08-13 04:37:49,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:37:49" (1/1) ... [2021-08-13 04:37:49,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 04:37:49,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 04:37:49,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 04:37:49,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 04:37:49,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:37:49" (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 [2021-08-13 04:37:49,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-13 04:37:49,927 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-08-13 04:37:49,927 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-08-13 04:37:49,927 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-08-13 04:37:49,927 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-08-13 04:37:49,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-13 04:37:49,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-13 04:37:49,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-13 04:37:49,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-13 04:37:49,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-13 04:37:49,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-13 04:37:49,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 04:37:49,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 04:37:49,929 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 04:37:50,211 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 04:37:50,211 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-08-13 04:37:50,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 04:37:50 BoogieIcfgContainer [2021-08-13 04:37:50,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 04:37:50,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 04:37:50,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 04:37:50,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 04:37:50,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.08 04:37:49" (1/3) ... [2021-08-13 04:37:50,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55622521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 04:37:50, skipping insertion in model container [2021-08-13 04:37:50,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:37:49" (2/3) ... [2021-08-13 04:37:50,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55622521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 04:37:50, skipping insertion in model container [2021-08-13 04:37:50,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 04:37:50" (3/3) ... [2021-08-13 04:37:50,220 INFO L111 eAbstractionObserver]: Analyzing ICFG dekker.i [2021-08-13 04:37:50,224 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 04:37:50,225 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-13 04:37:50,225 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 04:37:50,252 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,253 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,253 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,253 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,253 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,253 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,253 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,253 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,254 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,254 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,254 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,254 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,254 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,254 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,254 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,255 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,255 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,255 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,255 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,255 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,255 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,256 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,256 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,256 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,256 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,256 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,256 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,256 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,256 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,257 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,257 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,257 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,257 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,257 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,258 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,258 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,258 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,258 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,258 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,258 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,258 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,258 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,258 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,259 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,259 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,259 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,259 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,259 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,259 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,259 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,260 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,260 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,260 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,260 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,260 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,260 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,260 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,261 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,261 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,261 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,261 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,261 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,261 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,261 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,261 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,261 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,262 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,262 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,263 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,263 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,264 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,264 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,264 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,264 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,267 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,268 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,268 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,268 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,268 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,268 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 04:37:50,274 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-08-13 04:37:50,290 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-13 04:37:50,310 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 04:37:50,310 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 04:37:50,311 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 04:37:50,311 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 04:37:50,311 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 04:37:50,311 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 04:37:50,311 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 04:37:50,311 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 04:37:50,322 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 94 places, 102 transitions, 226 flow [2021-08-13 04:37:50,371 INFO L129 PetriNetUnfolder]: 14/102 cut-off events. [2021-08-13 04:37:50,371 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-08-13 04:37:50,382 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 102 events. 14/102 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 158 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 67. Up to 3 conditions per place. [2021-08-13 04:37:50,384 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 102 transitions, 226 flow [2021-08-13 04:37:50,388 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 90 transitions, 192 flow [2021-08-13 04:37:50,402 INFO L129 PetriNetUnfolder]: 4/47 cut-off events. [2021-08-13 04:37:50,402 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 04:37:50,405 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 04:37:50,406 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 04:37:50,406 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 04:37:50,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 04:37:50,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1600769794, now seen corresponding path program 1 times [2021-08-13 04:37:50,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 04:37:50,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266753448] [2021-08-13 04:37:50,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 04:37:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 04:37:50,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 04:37:50,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 04:37:50,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 04:37:50,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 04:37:50,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 04:37:50,571 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 04:37:50,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266753448] [2021-08-13 04:37:50,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266753448] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 04:37:50,571 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 04:37:50,571 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-13 04:37:50,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498522485] [2021-08-13 04:37:50,577 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-08-13 04:37:50,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 04:37:50,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-13 04:37:50,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-13 04:37:50,586 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 102 [2021-08-13 04:37:50,588 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 90 transitions, 192 flow. Second operand has 2 states, 2 states have (on average 95.5) internal successors, (191), 2 states have internal predecessors, (191), 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) [2021-08-13 04:37:50,589 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 04:37:50,589 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 102 [2021-08-13 04:37:50,589 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 04:37:50,609 INFO L129 PetriNetUnfolder]: 6/85 cut-off events. [2021-08-13 04:37:50,609 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-08-13 04:37:50,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 85 events. 6/85 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 145 event pairs, 0 based on Foata normal form. 7/83 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2021-08-13 04:37:50,612 INFO L132 encePairwiseOnDemand]: 95/102 looper letters, 0 selfloop transitions, 0 changer transitions 1/83 dead transitions. [2021-08-13 04:37:50,612 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 83 transitions, 178 flow [2021-08-13 04:37:50,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-13 04:37:50,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-08-13 04:37:50,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 197 transitions. [2021-08-13 04:37:50,620 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9656862745098039 [2021-08-13 04:37:50,620 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 197 transitions. [2021-08-13 04:37:50,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 197 transitions. [2021-08-13 04:37:50,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 04:37:50,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 197 transitions. [2021-08-13 04:37:50,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 98.5) internal successors, (197), 2 states have internal predecessors, (197), 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) [2021-08-13 04:37:50,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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) [2021-08-13 04:37:50,633 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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) [2021-08-13 04:37:50,634 INFO L348 CegarLoopForPetriNet]: 83 programPoint places, 1 predicate places. [2021-08-13 04:37:50,634 INFO L482 AbstractCegarLoop]: Abstraction has has 84 places, 83 transitions, 178 flow [2021-08-13 04:37:50,634 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 95.5) internal successors, (191), 2 states have internal predecessors, (191), 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) [2021-08-13 04:37:50,634 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 04:37:50,634 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 04:37:50,634 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 04:37:50,634 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 04:37:50,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 04:37:50,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1600740003, now seen corresponding path program 1 times [2021-08-13 04:37:50,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 04:37:50,635 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188092744] [2021-08-13 04:37:50,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 04:37:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 04:37:50,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 04:37:50,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 04:37:50,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 04:37:50,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 04:37:50,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 04:37:50,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 04:37:50,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 04:37:50,692 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 04:37:50,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188092744] [2021-08-13 04:37:50,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188092744] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 04:37:50,693 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 04:37:50,693 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 04:37:50,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741348421] [2021-08-13 04:37:50,694 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 04:37:50,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 04:37:50,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 04:37:50,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 04:37:50,695 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 102 [2021-08-13 04:37:50,695 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 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) [2021-08-13 04:37:50,695 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 04:37:50,695 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 102 [2021-08-13 04:37:50,695 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 04:37:50,749 INFO L129 PetriNetUnfolder]: 13/145 cut-off events. [2021-08-13 04:37:50,749 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-08-13 04:37:50,750 INFO L84 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 145 events. 13/145 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 488 event pairs, 2 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 184. Up to 18 conditions per place. [2021-08-13 04:37:50,751 INFO L132 encePairwiseOnDemand]: 97/102 looper letters, 7 selfloop transitions, 3 changer transitions 1/86 dead transitions. [2021-08-13 04:37:50,751 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 86 transitions, 204 flow [2021-08-13 04:37:50,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 04:37:50,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 04:37:50,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2021-08-13 04:37:50,756 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9019607843137255 [2021-08-13 04:37:50,756 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 276 transitions. [2021-08-13 04:37:50,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 276 transitions. [2021-08-13 04:37:50,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 04:37:50,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 276 transitions. [2021-08-13 04:37:50,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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) [2021-08-13 04:37:50,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 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) [2021-08-13 04:37:50,760 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 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) [2021-08-13 04:37:50,760 INFO L348 CegarLoopForPetriNet]: 83 programPoint places, 3 predicate places. [2021-08-13 04:37:50,760 INFO L482 AbstractCegarLoop]: Abstraction has has 86 places, 86 transitions, 204 flow [2021-08-13 04:37:50,760 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 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) [2021-08-13 04:37:50,760 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 04:37:50,761 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 04:37:50,761 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 04:37:50,761 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 04:37:50,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 04:37:50,762 INFO L82 PathProgramCache]: Analyzing trace with hash -339940789, now seen corresponding path program 1 times [2021-08-13 04:37:50,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 04:37:50,762 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953564016] [2021-08-13 04:37:50,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 04:37:50,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 04:37:50,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 04:37:50,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 04:37:50,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 04:37:50,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 04:37:50,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 04:37:50,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 04:37:50,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 04:37:50,805 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 04:37:50,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953564016] [2021-08-13 04:37:50,805 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953564016] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 04:37:50,805 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 04:37:50,805 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 04:37:50,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706425541] [2021-08-13 04:37:50,805 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 04:37:50,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 04:37:50,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 04:37:50,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 04:37:50,807 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 102 [2021-08-13 04:37:50,807 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 86 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 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) [2021-08-13 04:37:50,807 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 04:37:50,807 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 102 [2021-08-13 04:37:50,807 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 04:37:50,834 INFO L129 PetriNetUnfolder]: 8/127 cut-off events. [2021-08-13 04:37:50,835 INFO L130 PetriNetUnfolder]: For 11/17 co-relation queries the response was YES. [2021-08-13 04:37:50,835 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 127 events. 8/127 cut-off events. For 11/17 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 379 event pairs, 2 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 175. Up to 11 conditions per place. [2021-08-13 04:37:50,836 INFO L132 encePairwiseOnDemand]: 98/102 looper letters, 6 selfloop transitions, 2 changer transitions 1/84 dead transitions. [2021-08-13 04:37:50,836 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 84 transitions, 212 flow [2021-08-13 04:37:50,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 04:37:50,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 04:37:50,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 274 transitions. [2021-08-13 04:37:50,837 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8954248366013072 [2021-08-13 04:37:50,837 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 274 transitions. [2021-08-13 04:37:50,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 274 transitions. [2021-08-13 04:37:50,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 04:37:50,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 274 transitions. [2021-08-13 04:37:50,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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) [2021-08-13 04:37:50,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 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) [2021-08-13 04:37:50,839 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 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) [2021-08-13 04:37:50,839 INFO L348 CegarLoopForPetriNet]: 83 programPoint places, 5 predicate places. [2021-08-13 04:37:50,839 INFO L482 AbstractCegarLoop]: Abstraction has has 88 places, 84 transitions, 212 flow [2021-08-13 04:37:50,839 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 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) [2021-08-13 04:37:50,840 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 04:37:50,840 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 04:37:50,840 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 04:37:50,840 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 04:37:50,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 04:37:50,840 INFO L82 PathProgramCache]: Analyzing trace with hash 234972812, now seen corresponding path program 1 times [2021-08-13 04:37:50,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 04:37:50,841 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571106146] [2021-08-13 04:37:50,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 04:37:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 04:37:50,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 04:37:50,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 04:37:50,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 04:37:50,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 04:37:50,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 04:37:50,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 04:37:50,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 04:37:50,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 04:37:50,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 04:37:50,895 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 04:37:50,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571106146] [2021-08-13 04:37:50,896 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571106146] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 04:37:50,896 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 04:37:50,896 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-13 04:37:50,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101808776] [2021-08-13 04:37:50,896 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 04:37:50,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 04:37:50,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 04:37:50,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 04:37:50,897 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 102 [2021-08-13 04:37:50,898 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 84 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 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) [2021-08-13 04:37:50,898 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 04:37:50,898 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 102 [2021-08-13 04:37:50,898 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 04:37:50,970 INFO L129 PetriNetUnfolder]: 47/280 cut-off events. [2021-08-13 04:37:50,971 INFO L130 PetriNetUnfolder]: For 22/28 co-relation queries the response was YES. [2021-08-13 04:37:50,974 INFO L84 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 280 events. 47/280 cut-off events. For 22/28 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1350 event pairs, 9 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 410. Up to 27 conditions per place. [2021-08-13 04:37:50,975 INFO L132 encePairwiseOnDemand]: 95/102 looper letters, 11 selfloop transitions, 10 changer transitions 1/95 dead transitions. [2021-08-13 04:37:50,975 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 95 transitions, 276 flow [2021-08-13 04:37:50,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 04:37:50,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 04:37:50,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 448 transitions. [2021-08-13 04:37:50,978 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8784313725490196 [2021-08-13 04:37:50,978 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 448 transitions. [2021-08-13 04:37:50,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 448 transitions. [2021-08-13 04:37:50,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 04:37:50,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 448 transitions. [2021-08-13 04:37:50,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 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) [2021-08-13 04:37:50,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 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) [2021-08-13 04:37:50,980 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 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) [2021-08-13 04:37:50,980 INFO L348 CegarLoopForPetriNet]: 83 programPoint places, 9 predicate places. [2021-08-13 04:37:50,980 INFO L482 AbstractCegarLoop]: Abstraction has has 92 places, 95 transitions, 276 flow [2021-08-13 04:37:50,981 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 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) [2021-08-13 04:37:50,981 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 04:37:50,981 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 04:37:50,981 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 04:37:50,981 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 04:37:50,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 04:37:50,981 INFO L82 PathProgramCache]: Analyzing trace with hash 303952502, now seen corresponding path program 2 times [2021-08-13 04:37:50,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 04:37:50,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62426787] [2021-08-13 04:37:50,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 04:37:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 04:37:51,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 04:37:51,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 04:37:51,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 04:37:51,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 04:37:51,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 04:37:51,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 04:37:51,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 04:37:51,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 04:37:51,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 04:37:51,041 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 04:37:51,041 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62426787] [2021-08-13 04:37:51,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62426787] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 04:37:51,042 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 04:37:51,042 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-13 04:37:51,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19475118] [2021-08-13 04:37:51,043 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 04:37:51,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 04:37:51,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 04:37:51,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 04:37:51,044 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 102 [2021-08-13 04:37:51,044 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 95 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 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) [2021-08-13 04:37:51,045 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 04:37:51,045 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 102 [2021-08-13 04:37:51,045 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 04:37:51,103 INFO L129 PetriNetUnfolder]: 120/453 cut-off events. [2021-08-13 04:37:51,103 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2021-08-13 04:37:51,105 INFO L84 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 453 events. 120/453 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2473 event pairs, 15 based on Foata normal form. 0/393 useless extension candidates. Maximal degree in co-relation 705. Up to 39 conditions per place. [2021-08-13 04:37:51,105 INFO L132 encePairwiseOnDemand]: 95/102 looper letters, 0 selfloop transitions, 0 changer transitions 103/103 dead transitions. [2021-08-13 04:37:51,105 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 103 transitions, 331 flow [2021-08-13 04:37:51,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 04:37:51,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 04:37:51,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 449 transitions. [2021-08-13 04:37:51,107 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8803921568627451 [2021-08-13 04:37:51,107 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 449 transitions. [2021-08-13 04:37:51,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 449 transitions. [2021-08-13 04:37:51,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 04:37:51,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 449 transitions. [2021-08-13 04:37:51,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 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) [2021-08-13 04:37:51,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 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) [2021-08-13 04:37:51,112 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 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) [2021-08-13 04:37:51,113 INFO L348 CegarLoopForPetriNet]: 83 programPoint places, 9 predicate places. [2021-08-13 04:37:51,113 INFO L482 AbstractCegarLoop]: Abstraction has has 92 places, 103 transitions, 331 flow [2021-08-13 04:37:51,114 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 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) [2021-08-13 04:37:51,114 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown