/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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 10:59:26,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 10:59:26,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 10:59:26,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 10:59:26,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 10:59:26,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 10:59:26,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 10:59:26,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 10:59:26,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 10:59:26,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 10:59:26,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 10:59:26,800 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 10:59:26,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 10:59:26,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 10:59:26,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 10:59:26,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 10:59:26,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 10:59:26,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 10:59:26,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 10:59:26,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 10:59:26,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 10:59:26,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 10:59:26,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 10:59:26,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 10:59:26,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 10:59:26,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 10:59:26,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 10:59:26,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 10:59:26,833 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-VariableLbe.epf [2021-03-24 10:59:26,870 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 10:59:26,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 10:59:26,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 10:59:26,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 10:59:26,874 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 10:59:26,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 10:59:26,874 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 10:59:26,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 10:59:26,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 10:59:26,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 10:59:26,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 10:59:26,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 10:59:26,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 10:59:26,876 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 10:59:26,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 10:59:26,876 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 10:59:26,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 10:59:26,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 10:59:26,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 10:59:26,876 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 10:59:26,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 10:59:26,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 10:59:26,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 10:59:26,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 10:59:26,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 10:59:26,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 10:59:26,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 10:59:26,877 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 10:59:26,878 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 10:59:26,878 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 10:59:27,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 10:59:27,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 10:59:27,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 10:59:27,189 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 10:59:27,190 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 10:59:27,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.opt.i [2021-03-24 10:59:27,255 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5f3f8378/108abaed2ef743e2aad1685f7ff3f48b/FLAG1d0da1378 [2021-03-24 10:59:27,799 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 10:59:27,799 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_pso.opt.i [2021-03-24 10:59:27,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5f3f8378/108abaed2ef743e2aad1685f7ff3f48b/FLAG1d0da1378 [2021-03-24 10:59:28,087 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5f3f8378/108abaed2ef743e2aad1685f7ff3f48b [2021-03-24 10:59:28,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 10:59:28,090 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 10:59:28,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 10:59:28,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 10:59:28,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 10:59:28,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 10:59:28" (1/1) ... [2021-03-24 10:59:28,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f604107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:59:28, skipping insertion in model container [2021-03-24 10:59:28,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 10:59:28" (1/1) ... [2021-03-24 10:59:28,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 10:59:28,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 10:59:28,270 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_pso.opt.i[949,962] [2021-03-24 10:59:28,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 10:59:28,411 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 10:59:28,425 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_pso.opt.i[949,962] [2021-03-24 10:59:28,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 10:59:28,534 INFO L208 MainTranslator]: Completed translation [2021-03-24 10:59:28,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:59:28 WrapperNode [2021-03-24 10:59:28,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 10:59:28,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 10:59:28,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 10:59:28,538 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 10:59:28,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:59:28" (1/1) ... [2021-03-24 10:59:28,573 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:59:28" (1/1) ... [2021-03-24 10:59:28,588 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 10:59:28,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 10:59:28,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 10:59:28,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 10:59:28,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:59:28" (1/1) ... [2021-03-24 10:59:28,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:59:28" (1/1) ... [2021-03-24 10:59:28,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:59:28" (1/1) ... [2021-03-24 10:59:28,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:59:28" (1/1) ... [2021-03-24 10:59:28,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:59:28" (1/1) ... [2021-03-24 10:59:28,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:59:28" (1/1) ... [2021-03-24 10:59:28,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:59:28" (1/1) ... [2021-03-24 10:59:28,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 10:59:28,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 10:59:28,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 10:59:28,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 10:59:28,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:59:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 10:59:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 10:59:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 10:59:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 10:59:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 10:59:28,660 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 10:59:28,660 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 10:59:28,660 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 10:59:28,660 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 10:59:28,660 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 10:59:28,660 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 10:59:28,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 10:59:28,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 10:59:28,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 10:59:28,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 10:59:28,662 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 10:59:28,976 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 10:59:28,976 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 10:59:28,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:59:28 BoogieIcfgContainer [2021-03-24 10:59:28,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 10:59:28,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 10:59:28,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 10:59:28,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 10:59:28,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 10:59:28" (1/3) ... [2021-03-24 10:59:28,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2822b444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 10:59:28, skipping insertion in model container [2021-03-24 10:59:28,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:59:28" (2/3) ... [2021-03-24 10:59:28,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2822b444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 10:59:28, skipping insertion in model container [2021-03-24 10:59:28,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:59:28" (3/3) ... [2021-03-24 10:59:28,986 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_pso.opt.i [2021-03-24 10:59:28,991 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 10:59:28,995 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 10:59:28,996 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 10:59:29,031 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,032 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,032 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,032 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,032 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,032 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,032 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,032 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,033 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,033 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,033 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,033 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,034 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,034 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,034 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,034 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,035 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,035 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,035 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,035 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,035 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,035 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,035 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,036 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,037 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,037 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,038 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,038 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,038 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,038 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,039 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,039 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,039 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,039 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,040 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,040 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,042 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,042 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,043 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,043 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,048 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,048 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,048 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,049 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,054 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,054 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,054 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,054 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:29,057 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 10:59:29,073 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-24 10:59:29,100 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 10:59:29,100 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 10:59:29,100 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 10:59:29,100 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 10:59:29,101 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 10:59:29,101 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 10:59:29,101 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 10:59:29,101 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 10:59:29,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-24 10:59:29,164 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-24 10:59:29,165 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:59:29,170 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-24 10:59:29,171 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-24 10:59:29,182 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-24 10:59:29,184 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 10:59:29,190 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-24 10:59:29,194 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-24 10:59:29,195 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-24 10:59:29,218 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-24 10:59:29,218 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:59:29,219 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-24 10:59:29,221 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-24 10:59:30,745 INFO L154 LiptonReduction]: Checked pairs total: 1328 [2021-03-24 10:59:30,745 INFO L156 LiptonReduction]: Total number of compositions: 41 [2021-03-24 10:59:30,747 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1564 [2021-03-24 10:59:30,754 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-24 10:59:30,754 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:59:30,755 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:59:30,755 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:59:30,755 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:59:30,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:59:30,759 INFO L82 PathProgramCache]: Analyzing trace with hash -864788976, now seen corresponding path program 1 times [2021-03-24 10:59:30,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:59:30,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521485708] [2021-03-24 10:59:30,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:59:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:59:30,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:30,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:59:30,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:30,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:59:30,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:30,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 10:59:30,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:59:30,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521485708] [2021-03-24 10:59:30,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:59:30,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 10:59:30,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672888310] [2021-03-24 10:59:30,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 10:59:30,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:59:30,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 10:59:30,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 10:59:30,988 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 116 [2021-03-24 10:59:30,992 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:59:30,992 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:59:30,996 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 116 [2021-03-24 10:59:30,997 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:59:31,064 INFO L129 PetriNetUnfolder]: 41/111 cut-off events. [2021-03-24 10:59:31,065 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:59:31,066 INFO L84 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 111 events. 41/111 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 422 event pairs, 9 based on Foata normal form. 12/119 useless extension candidates. Maximal degree in co-relation 190. Up to 53 conditions per place. [2021-03-24 10:59:31,069 INFO L132 encePairwiseOnDemand]: 111/116 looper letters, 8 selfloop transitions, 3 changer transitions 9/34 dead transitions. [2021-03-24 10:59:31,069 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 34 transitions, 117 flow [2021-03-24 10:59:31,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 10:59:31,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 10:59:31,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 487 transitions. [2021-03-24 10:59:31,085 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8396551724137931 [2021-03-24 10:59:31,086 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 487 transitions. [2021-03-24 10:59:31,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 487 transitions. [2021-03-24 10:59:31,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:59:31,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 487 transitions. [2021-03-24 10:59:31,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 97.4) internal successors, (487), 5 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:59:31,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:59:31,102 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:59:31,104 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 5 states and 487 transitions. [2021-03-24 10:59:31,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 34 transitions, 117 flow [2021-03-24 10:59:31,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 114 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 10:59:31,108 INFO L241 Difference]: Finished difference. Result has 35 places, 23 transitions, 75 flow [2021-03-24 10:59:31,109 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=75, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2021-03-24 10:59:31,110 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2021-03-24 10:59:31,110 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 75 flow [2021-03-24 10:59:31,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:59:31,110 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:59:31,110 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:59:31,111 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 10:59:31,111 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:59:31,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:59:31,111 INFO L82 PathProgramCache]: Analyzing trace with hash -2134296910, now seen corresponding path program 1 times [2021-03-24 10:59:31,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:59:31,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168468684] [2021-03-24 10:59:31,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:59:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:59:31,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:31,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:59:31,195 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 10:59:31,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 10:59:31,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:31,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 10:59:31,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:59:31,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168468684] [2021-03-24 10:59:31,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:59:31,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 10:59:31,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818441062] [2021-03-24 10:59:31,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 10:59:31,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:59:31,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 10:59:31,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 10:59:31,218 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-24 10:59:31,218 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 75 flow. Second operand has 5 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:59:31,218 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:59:31,218 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-24 10:59:31,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:59:31,290 INFO L129 PetriNetUnfolder]: 35/123 cut-off events. [2021-03-24 10:59:31,290 INFO L130 PetriNetUnfolder]: For 62/73 co-relation queries the response was YES. [2021-03-24 10:59:31,291 INFO L84 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 123 events. 35/123 cut-off events. For 62/73 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 529 event pairs, 6 based on Foata normal form. 13/133 useless extension candidates. Maximal degree in co-relation 287. Up to 41 conditions per place. [2021-03-24 10:59:31,291 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 15 selfloop transitions, 8 changer transitions 13/48 dead transitions. [2021-03-24 10:59:31,291 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 48 transitions, 249 flow [2021-03-24 10:59:31,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 10:59:31,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 10:59:31,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 615 transitions. [2021-03-24 10:59:31,296 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7573891625615764 [2021-03-24 10:59:31,296 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 615 transitions. [2021-03-24 10:59:31,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 615 transitions. [2021-03-24 10:59:31,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:59:31,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 615 transitions. [2021-03-24 10:59:31,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.85714285714286) internal successors, (615), 7 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:59:31,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:59:31,299 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:59:31,300 INFO L185 Difference]: Start difference. First operand has 35 places, 23 transitions, 75 flow. Second operand 7 states and 615 transitions. [2021-03-24 10:59:31,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 48 transitions, 249 flow [2021-03-24 10:59:31,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 48 transitions, 238 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-24 10:59:31,303 INFO L241 Difference]: Finished difference. Result has 43 places, 29 transitions, 154 flow [2021-03-24 10:59:31,303 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=154, PETRI_PLACES=43, PETRI_TRANSITIONS=29} [2021-03-24 10:59:31,304 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2021-03-24 10:59:31,304 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 29 transitions, 154 flow [2021-03-24 10:59:31,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:59:31,304 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:59:31,304 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:59:31,305 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 10:59:31,305 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:59:31,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:59:31,305 INFO L82 PathProgramCache]: Analyzing trace with hash 2071418111, now seen corresponding path program 1 times [2021-03-24 10:59:31,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:59:31,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480379741] [2021-03-24 10:59:31,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:59:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:59:31,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:31,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:59:31,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:31,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:59:31,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:31,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:59:31,383 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 10:59:31,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 10:59:31,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:31,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 10:59:31,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:59:31,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480379741] [2021-03-24 10:59:31,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:59:31,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 10:59:31,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945446064] [2021-03-24 10:59:31,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 10:59:31,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:59:31,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 10:59:31,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-24 10:59:31,403 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 116 [2021-03-24 10:59:31,404 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 29 transitions, 154 flow. Second operand has 6 states, 6 states have (on average 82.16666666666667) internal successors, (493), 6 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:59:31,404 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:59:31,404 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 116 [2021-03-24 10:59:31,404 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:59:31,513 INFO L129 PetriNetUnfolder]: 49/156 cut-off events. [2021-03-24 10:59:31,513 INFO L130 PetriNetUnfolder]: For 358/413 co-relation queries the response was YES. [2021-03-24 10:59:31,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 156 events. 49/156 cut-off events. For 358/413 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 728 event pairs, 10 based on Foata normal form. 19/171 useless extension candidates. Maximal degree in co-relation 514. Up to 55 conditions per place. [2021-03-24 10:59:31,518 INFO L132 encePairwiseOnDemand]: 107/116 looper letters, 14 selfloop transitions, 10 changer transitions 28/63 dead transitions. [2021-03-24 10:59:31,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 63 transitions, 516 flow [2021-03-24 10:59:31,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 10:59:31,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 10:59:31,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 766 transitions. [2021-03-24 10:59:31,521 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7337164750957854 [2021-03-24 10:59:31,524 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 766 transitions. [2021-03-24 10:59:31,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 766 transitions. [2021-03-24 10:59:31,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:59:31,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 766 transitions. [2021-03-24 10:59:31,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 85.11111111111111) internal successors, (766), 9 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:59:31,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 116.0) internal successors, (1160), 10 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:59:31,531 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 116.0) internal successors, (1160), 10 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:59:31,532 INFO L185 Difference]: Start difference. First operand has 43 places, 29 transitions, 154 flow. Second operand 9 states and 766 transitions. [2021-03-24 10:59:31,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 63 transitions, 516 flow [2021-03-24 10:59:31,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 63 transitions, 470 flow, removed 22 selfloop flow, removed 3 redundant places. [2021-03-24 10:59:31,541 INFO L241 Difference]: Finished difference. Result has 53 places, 29 transitions, 192 flow [2021-03-24 10:59:31,541 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=192, PETRI_PLACES=53, PETRI_TRANSITIONS=29} [2021-03-24 10:59:31,541 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2021-03-24 10:59:31,541 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 29 transitions, 192 flow [2021-03-24 10:59:31,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 82.16666666666667) internal successors, (493), 6 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:59:31,542 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:59:31,542 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:59:31,542 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 10:59:31,542 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:59:31,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:59:31,543 INFO L82 PathProgramCache]: Analyzing trace with hash 2105718233, now seen corresponding path program 1 times [2021-03-24 10:59:31,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:59:31,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614124655] [2021-03-24 10:59:31,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:59:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:59:31,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:31,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:59:31,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:31,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:59:31,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:31,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:59:31,621 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 10:59:31,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 10:59:31,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:31,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 10:59:31,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:59:31,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614124655] [2021-03-24 10:59:31,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:59:31,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 10:59:31,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715141541] [2021-03-24 10:59:31,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 10:59:31,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:59:31,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 10:59:31,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-24 10:59:31,646 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-24 10:59:31,648 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 29 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:59:31,648 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:59:31,648 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-24 10:59:31,648 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:59:31,705 INFO L129 PetriNetUnfolder]: 7/58 cut-off events. [2021-03-24 10:59:31,705 INFO L130 PetriNetUnfolder]: For 176/179 co-relation queries the response was YES. [2021-03-24 10:59:31,705 INFO L84 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 58 events. 7/58 cut-off events. For 176/179 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 162 event pairs, 0 based on Foata normal form. 4/62 useless extension candidates. Maximal degree in co-relation 227. Up to 18 conditions per place. [2021-03-24 10:59:31,706 INFO L132 encePairwiseOnDemand]: 109/116 looper letters, 5 selfloop transitions, 5 changer transitions 15/37 dead transitions. [2021-03-24 10:59:31,706 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 37 transitions, 319 flow [2021-03-24 10:59:31,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 10:59:31,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 10:59:31,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 518 transitions. [2021-03-24 10:59:31,707 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7442528735632183 [2021-03-24 10:59:31,707 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 518 transitions. [2021-03-24 10:59:31,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 518 transitions. [2021-03-24 10:59:31,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:59:31,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 518 transitions. [2021-03-24 10:59:31,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:59:31,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:59:31,711 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:59:31,711 INFO L185 Difference]: Start difference. First operand has 53 places, 29 transitions, 192 flow. Second operand 6 states and 518 transitions. [2021-03-24 10:59:31,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 37 transitions, 319 flow [2021-03-24 10:59:31,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 37 transitions, 301 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-03-24 10:59:31,714 INFO L241 Difference]: Finished difference. Result has 51 places, 21 transitions, 120 flow [2021-03-24 10:59:31,714 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=120, PETRI_PLACES=51, PETRI_TRANSITIONS=21} [2021-03-24 10:59:31,714 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2021-03-24 10:59:31,714 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 21 transitions, 120 flow [2021-03-24 10:59:31,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:59:31,715 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:59:31,715 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:59:31,715 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 10:59:31,715 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:59:31,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:59:31,715 INFO L82 PathProgramCache]: Analyzing trace with hash 2108691463, now seen corresponding path program 2 times [2021-03-24 10:59:31,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:59:31,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196606948] [2021-03-24 10:59:31,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:59:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:59:31,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:31,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:59:31,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:31,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:59:31,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:31,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:59:31,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:31,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 10:59:31,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:59:31,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196606948] [2021-03-24 10:59:31,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:59:31,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 10:59:31,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203072000] [2021-03-24 10:59:31,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 10:59:31,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:59:31,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 10:59:31,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 10:59:31,783 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 116 [2021-03-24 10:59:31,784 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 21 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 89.4) internal successors, (447), 5 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:59:31,784 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:59:31,784 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 116 [2021-03-24 10:59:31,784 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:59:31,810 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-03-24 10:59:31,810 INFO L130 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2021-03-24 10:59:31,810 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 22 events. 0/22 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 8 event pairs, 0 based on Foata normal form. 2/24 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-24 10:59:31,810 INFO L132 encePairwiseOnDemand]: 111/116 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2021-03-24 10:59:31,811 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 21 transitions, 146 flow [2021-03-24 10:59:31,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 10:59:31,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 10:59:31,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 449 transitions. [2021-03-24 10:59:31,812 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7741379310344828 [2021-03-24 10:59:31,812 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 449 transitions. [2021-03-24 10:59:31,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 449 transitions. [2021-03-24 10:59:31,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:59:31,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 449 transitions. [2021-03-24 10:59:31,813 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) [2021-03-24 10:59:31,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:59:31,814 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:59:31,815 INFO L185 Difference]: Start difference. First operand has 51 places, 21 transitions, 120 flow. Second operand 5 states and 449 transitions. [2021-03-24 10:59:31,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 21 transitions, 146 flow [2021-03-24 10:59:31,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 21 transitions, 104 flow, removed 6 selfloop flow, removed 10 redundant places. [2021-03-24 10:59:31,816 INFO L241 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2021-03-24 10:59:31,816 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2021-03-24 10:59:31,816 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2021-03-24 10:59:31,817 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2021-03-24 10:59:31,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 89.4) internal successors, (447), 5 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:59:31,817 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 10:59:31,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 10:59:31 BasicIcfg [2021-03-24 10:59:31,820 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 10:59:31,821 INFO L168 Benchmark]: Toolchain (without parser) took 3730.98 ms. Allocated memory was 362.8 MB in the beginning and 436.2 MB in the end (delta: 73.4 MB). Free memory was 325.9 MB in the beginning and 389.5 MB in the end (delta: -63.6 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.0 GB. [2021-03-24 10:59:31,822 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 362.8 MB. Free memory was 343.9 MB in the beginning and 343.9 MB in the end (delta: 69.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 10:59:31,822 INFO L168 Benchmark]: CACSL2BoogieTranslator took 444.42 ms. Allocated memory is still 362.8 MB. Free memory was 325.7 MB in the beginning and 325.5 MB in the end (delta: 218.7 kB). Peak memory consumption was 9.5 MB. Max. memory is 16.0 GB. [2021-03-24 10:59:31,823 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.87 ms. Allocated memory is still 362.8 MB. Free memory was 325.5 MB in the beginning and 323.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 10:59:31,823 INFO L168 Benchmark]: Boogie Preprocessor took 16.84 ms. Allocated memory is still 362.8 MB. Free memory was 323.4 MB in the beginning and 322.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 10:59:31,823 INFO L168 Benchmark]: RCFGBuilder took 372.86 ms. Allocated memory is still 362.8 MB. Free memory was 322.4 MB in the beginning and 297.4 MB in the end (delta: 25.0 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-24 10:59:31,824 INFO L168 Benchmark]: TraceAbstraction took 2839.20 ms. Allocated memory was 362.8 MB in the beginning and 436.2 MB in the end (delta: 73.4 MB). Free memory was 297.4 MB in the beginning and 389.5 MB in the end (delta: -92.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 10:59:31,826 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 362.8 MB. Free memory was 343.9 MB in the beginning and 343.9 MB in the end (delta: 69.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 444.42 ms. Allocated memory is still 362.8 MB. Free memory was 325.7 MB in the beginning and 325.5 MB in the end (delta: 218.7 kB). Peak memory consumption was 9.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 50.87 ms. Allocated memory is still 362.8 MB. Free memory was 325.5 MB in the beginning and 323.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 16.84 ms. Allocated memory is still 362.8 MB. Free memory was 323.4 MB in the beginning and 322.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 372.86 ms. Allocated memory is still 362.8 MB. Free memory was 322.4 MB in the beginning and 297.4 MB in the end (delta: 25.0 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2839.20 ms. Allocated memory was 362.8 MB in the beginning and 436.2 MB in the end (delta: 73.4 MB). Free memory was 297.4 MB in the beginning and 389.5 MB in the end (delta: -92.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1551.6ms, 69 PlacesBefore, 31 PlacesAfterwards, 60 TransitionsBefore, 21 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 41 TotalNumberOfCompositions, 1328 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 681, positive: 634, positive conditional: 0, positive unconditional: 634, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 447, positive: 428, positive conditional: 0, positive unconditional: 428, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 447, positive: 428, positive conditional: 0, positive unconditional: 428, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 681, positive: 206, positive conditional: 0, positive unconditional: 206, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 447, unknown conditional: 0, unknown unconditional: 447] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 35, Positive conditional cache size: 0, Positive unconditional cache size: 35, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2721.7ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 460.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1649.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 52 SDtfs, 71 SDslu, 71 SDs, 0 SdLazy, 84 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 80.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 166.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=192occurred in iteration=3, InterpolantAutomatonStates: 32, 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: 11.8ms SsaConstructionTime, 115.6ms SatisfiabilityAnalysisTime, 328.8ms InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 330 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...