/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-18 22:53:45,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 22:53:45,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 22:53:45,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 22:53:45,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 22:53:45,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 22:53:45,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 22:53:45,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 22:53:45,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 22:53:45,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 22:53:45,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 22:53:45,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 22:53:45,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 22:53:45,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 22:53:45,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 22:53:45,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 22:53:45,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 22:53:45,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 22:53:45,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 22:53:45,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 22:53:45,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 22:53:45,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 22:53:45,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 22:53:45,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 22:53:45,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-18 22:53:45,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-18 22:53:45,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-18 22:53:45,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-18 22:53:45,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-18 22:53:45,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-01-18 22:53:45,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 22:53:45,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 22:53:45,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 22:53:45,610 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.epf [2022-01-18 22:53:45,624 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 22:53:45,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 22:53:45,625 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 22:53:45,625 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 22:53:45,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 22:53:45,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 22:53:45,626 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 22:53:45,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 22:53:45,626 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 22:53:45,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 22:53:45,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 22:53:45,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 22:53:45,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 22:53:45,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 22:53:45,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 22:53:45,627 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 22:53:45,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 22:53:45,628 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 22:53:45,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 22:53:45,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 22:53:45,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 22:53:45,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 22:53:45,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 22:53:45,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 22:53:45,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 22:53:45,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 22:53:45,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 22:53:45,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 22:53:45,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 22:53:45,629 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 22:53:45,629 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-18 22:53:45,629 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 22:53:45,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 22:53:45,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 22:53:45,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 22:53:45,833 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 22:53:45,838 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 22:53:45,839 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-01-18 22:53:45,903 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c42e52728/aecc2f7feaf641eca1e3ac64b0257cec/FLAG6d1807d0a [2022-01-18 22:53:46,305 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 22:53:46,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-01-18 22:53:46,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c42e52728/aecc2f7feaf641eca1e3ac64b0257cec/FLAG6d1807d0a [2022-01-18 22:53:46,331 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c42e52728/aecc2f7feaf641eca1e3ac64b0257cec [2022-01-18 22:53:46,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 22:53:46,334 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 22:53:46,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 22:53:46,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 22:53:46,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 22:53:46,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 10:53:46" (1/1) ... [2022-01-18 22:53:46,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@215d1f9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:53:46, skipping insertion in model container [2022-01-18 22:53:46,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 10:53:46" (1/1) ... [2022-01-18 22:53:46,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 22:53:46,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 22:53:46,511 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-01-18 22:53:46,641 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 22:53:46,647 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 22:53:46,656 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-01-18 22:53:46,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 22:53:46,711 INFO L208 MainTranslator]: Completed translation [2022-01-18 22:53:46,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:53:46 WrapperNode [2022-01-18 22:53:46,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 22:53:46,712 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 22:53:46,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 22:53:46,712 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 22:53:46,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:53:46" (1/1) ... [2022-01-18 22:53:46,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:53:46" (1/1) ... [2022-01-18 22:53:46,740 INFO L137 Inliner]: procedures = 177, calls = 66, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 85 [2022-01-18 22:53:46,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 22:53:46,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 22:53:46,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 22:53:46,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 22:53:46,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:53:46" (1/1) ... [2022-01-18 22:53:46,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:53:46" (1/1) ... [2022-01-18 22:53:46,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:53:46" (1/1) ... [2022-01-18 22:53:46,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:53:46" (1/1) ... [2022-01-18 22:53:46,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:53:46" (1/1) ... [2022-01-18 22:53:46,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:53:46" (1/1) ... [2022-01-18 22:53:46,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:53:46" (1/1) ... [2022-01-18 22:53:46,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 22:53:46,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 22:53:46,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 22:53:46,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 22:53:46,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:53:46" (1/1) ... [2022-01-18 22:53:46,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 22:53:46,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 22:53:46,833 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 22:53:46,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 22:53:46,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 22:53:46,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 22:53:46,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 22:53:46,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 22:53:46,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 22:53:46,883 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-01-18 22:53:46,883 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-01-18 22:53:46,883 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-01-18 22:53:46,883 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-01-18 22:53:46,884 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-01-18 22:53:46,884 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-01-18 22:53:46,884 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-01-18 22:53:46,884 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-01-18 22:53:46,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 22:53:46,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 22:53:46,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 22:53:46,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 22:53:46,885 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 22:53:47,001 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 22:53:47,002 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 22:53:47,148 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 22:53:47,153 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 22:53:47,154 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 22:53:47,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 10:53:47 BoogieIcfgContainer [2022-01-18 22:53:47,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 22:53:47,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 22:53:47,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 22:53:47,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 22:53:47,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 10:53:46" (1/3) ... [2022-01-18 22:53:47,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5bc84d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 10:53:47, skipping insertion in model container [2022-01-18 22:53:47,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:53:46" (2/3) ... [2022-01-18 22:53:47,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5bc84d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 10:53:47, skipping insertion in model container [2022-01-18 22:53:47,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 10:53:47" (3/3) ... [2022-01-18 22:53:47,161 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-01-18 22:53:47,164 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 22:53:47,165 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 22:53:47,165 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 22:53:47,191 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,191 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,191 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,191 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,191 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,192 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,192 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,192 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,192 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,192 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,192 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,192 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,193 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,193 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,193 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,193 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,193 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,193 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,193 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,194 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,194 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,194 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,194 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,194 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,195 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,195 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,195 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,195 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,195 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,195 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,195 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,195 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,196 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,196 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,196 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,196 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,197 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,197 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,197 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,197 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,197 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,197 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,197 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,197 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,198 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,198 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,198 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,198 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,200 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,201 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,201 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,201 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,202 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,202 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,202 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,203 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,210 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,210 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,210 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,210 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,211 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,211 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,211 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,211 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:53:47,212 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 22:53:47,242 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 22:53:47,247 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 22:53:47,247 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-18 22:53:47,263 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 122 places, 111 transitions, 242 flow [2022-01-18 22:53:47,294 INFO L129 PetriNetUnfolder]: 2/107 cut-off events. [2022-01-18 22:53:47,294 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-18 22:53:47,297 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 107 events. 2/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 56 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2022-01-18 22:53:47,297 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 111 transitions, 242 flow [2022-01-18 22:53:47,300 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 91 transitions, 194 flow [2022-01-18 22:53:47,321 INFO L129 PetriNetUnfolder]: 1/90 cut-off events. [2022-01-18 22:53:47,321 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-18 22:53:47,321 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:53:47,322 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:53:47,322 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 22:53:47,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:53:47,326 INFO L85 PathProgramCache]: Analyzing trace with hash -535922452, now seen corresponding path program 1 times [2022-01-18 22:53:47,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:53:47,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257091013] [2022-01-18 22:53:47,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:53:47,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:53:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:53:47,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:53:47,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:53:47,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257091013] [2022-01-18 22:53:47,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257091013] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:53:47,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:53:47,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 22:53:47,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860511324] [2022-01-18 22:53:47,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:53:47,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 22:53:47,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:53:47,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 22:53:47,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 22:53:47,735 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 111 [2022-01-18 22:53:47,752 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 91 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 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) [2022-01-18 22:53:47,753 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:53:47,753 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 111 [2022-01-18 22:53:47,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:53:47,973 INFO L129 PetriNetUnfolder]: 287/787 cut-off events. [2022-01-18 22:53:47,973 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-01-18 22:53:47,979 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1284 conditions, 787 events. 287/787 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4441 event pairs, 98 based on Foata normal form. 18/782 useless extension candidates. Maximal degree in co-relation 1242. Up to 276 conditions per place. [2022-01-18 22:53:47,984 INFO L132 encePairwiseOnDemand]: 101/111 looper letters, 20 selfloop transitions, 5 changer transitions 31/128 dead transitions. [2022-01-18 22:53:47,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 128 transitions, 389 flow [2022-01-18 22:53:47,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 22:53:47,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-18 22:53:47,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 861 transitions. [2022-01-18 22:53:48,002 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8618618618618619 [2022-01-18 22:53:48,003 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 861 transitions. [2022-01-18 22:53:48,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 861 transitions. [2022-01-18 22:53:48,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:53:48,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 861 transitions. [2022-01-18 22:53:48,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 95.66666666666667) internal successors, (861), 9 states have internal predecessors, (861), 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) [2022-01-18 22:53:48,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 111.0) internal successors, (1110), 10 states have internal predecessors, (1110), 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) [2022-01-18 22:53:48,020 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 111.0) internal successors, (1110), 10 states have internal predecessors, (1110), 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) [2022-01-18 22:53:48,027 INFO L186 Difference]: Start difference. First operand has 103 places, 91 transitions, 194 flow. Second operand 9 states and 861 transitions. [2022-01-18 22:53:48,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 128 transitions, 389 flow [2022-01-18 22:53:48,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 128 transitions, 382 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-18 22:53:48,034 INFO L242 Difference]: Finished difference. Result has 114 places, 94 transitions, 257 flow [2022-01-18 22:53:48,036 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=257, PETRI_PLACES=114, PETRI_TRANSITIONS=94} [2022-01-18 22:53:48,038 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 11 predicate places. [2022-01-18 22:53:48,038 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 94 transitions, 257 flow [2022-01-18 22:53:48,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 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) [2022-01-18 22:53:48,044 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:53:48,044 INFO L254 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, 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] [2022-01-18 22:53:48,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 22:53:48,044 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 22:53:48,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:53:48,045 INFO L85 PathProgramCache]: Analyzing trace with hash 161379723, now seen corresponding path program 1 times [2022-01-18 22:53:48,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:53:48,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045781860] [2022-01-18 22:53:48,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:53:48,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:53:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:53:48,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:53:48,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:53:48,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045781860] [2022-01-18 22:53:48,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045781860] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:53:48,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:53:48,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:53:48,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472457257] [2022-01-18 22:53:48,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:53:48,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:53:48,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:53:48,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:53:48,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:53:48,231 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 111 [2022-01-18 22:53:48,232 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 94 transitions, 257 flow. Second operand has 7 states, 7 states have (on average 91.14285714285714) internal successors, (638), 7 states have internal predecessors, (638), 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) [2022-01-18 22:53:48,232 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:53:48,232 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 111 [2022-01-18 22:53:48,232 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:53:48,397 INFO L129 PetriNetUnfolder]: 187/527 cut-off events. [2022-01-18 22:53:48,397 INFO L130 PetriNetUnfolder]: For 1298/1523 co-relation queries the response was YES. [2022-01-18 22:53:48,399 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1821 conditions, 527 events. 187/527 cut-off events. For 1298/1523 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2394 event pairs, 13 based on Foata normal form. 14/516 useless extension candidates. Maximal degree in co-relation 1774. Up to 225 conditions per place. [2022-01-18 22:53:48,402 INFO L132 encePairwiseOnDemand]: 104/111 looper letters, 21 selfloop transitions, 4 changer transitions 28/125 dead transitions. [2022-01-18 22:53:48,403 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 125 transitions, 635 flow [2022-01-18 22:53:48,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 22:53:48,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-18 22:53:48,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 941 transitions. [2022-01-18 22:53:48,405 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8477477477477477 [2022-01-18 22:53:48,405 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 941 transitions. [2022-01-18 22:53:48,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 941 transitions. [2022-01-18 22:53:48,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:53:48,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 941 transitions. [2022-01-18 22:53:48,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 94.1) internal successors, (941), 10 states have internal predecessors, (941), 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) [2022-01-18 22:53:48,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 111.0) internal successors, (1221), 11 states have internal predecessors, (1221), 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) [2022-01-18 22:53:48,410 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 111.0) internal successors, (1221), 11 states have internal predecessors, (1221), 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) [2022-01-18 22:53:48,410 INFO L186 Difference]: Start difference. First operand has 114 places, 94 transitions, 257 flow. Second operand 10 states and 941 transitions. [2022-01-18 22:53:48,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 125 transitions, 635 flow [2022-01-18 22:53:48,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 125 transitions, 616 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-01-18 22:53:48,418 INFO L242 Difference]: Finished difference. Result has 120 places, 94 transitions, 271 flow [2022-01-18 22:53:48,418 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=271, PETRI_PLACES=120, PETRI_TRANSITIONS=94} [2022-01-18 22:53:48,418 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 17 predicate places. [2022-01-18 22:53:48,419 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 94 transitions, 271 flow [2022-01-18 22:53:48,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 91.14285714285714) internal successors, (638), 7 states have internal predecessors, (638), 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) [2022-01-18 22:53:48,419 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:53:48,419 INFO L254 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, 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] [2022-01-18 22:53:48,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 22:53:48,419 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 22:53:48,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:53:48,420 INFO L85 PathProgramCache]: Analyzing trace with hash -632887251, now seen corresponding path program 1 times [2022-01-18 22:53:48,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:53:48,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347907942] [2022-01-18 22:53:48,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:53:48,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:53:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:53:48,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:53:48,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:53:48,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347907942] [2022-01-18 22:53:48,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347907942] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:53:48,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:53:48,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:53:48,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337742208] [2022-01-18 22:53:48,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:53:48,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:53:48,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:53:48,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:53:48,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:53:48,544 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 111 [2022-01-18 22:53:48,545 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 94 transitions, 271 flow. Second operand has 7 states, 7 states have (on average 89.28571428571429) internal successors, (625), 7 states have internal predecessors, (625), 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) [2022-01-18 22:53:48,545 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:53:48,545 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 111 [2022-01-18 22:53:48,545 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:53:48,816 INFO L129 PetriNetUnfolder]: 282/759 cut-off events. [2022-01-18 22:53:48,816 INFO L130 PetriNetUnfolder]: For 2032/3004 co-relation queries the response was YES. [2022-01-18 22:53:48,819 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2615 conditions, 759 events. 282/759 cut-off events. For 2032/3004 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3995 event pairs, 8 based on Foata normal form. 23/752 useless extension candidates. Maximal degree in co-relation 2561. Up to 284 conditions per place. [2022-01-18 22:53:48,822 INFO L132 encePairwiseOnDemand]: 100/111 looper letters, 29 selfloop transitions, 13 changer transitions 50/162 dead transitions. [2022-01-18 22:53:48,822 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 162 transitions, 984 flow [2022-01-18 22:53:48,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 22:53:48,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-18 22:53:48,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1572 transitions. [2022-01-18 22:53:48,826 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8330683624801272 [2022-01-18 22:53:48,826 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1572 transitions. [2022-01-18 22:53:48,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1572 transitions. [2022-01-18 22:53:48,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:53:48,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1572 transitions. [2022-01-18 22:53:48,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 92.47058823529412) internal successors, (1572), 17 states have internal predecessors, (1572), 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) [2022-01-18 22:53:48,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 111.0) internal successors, (1998), 18 states have internal predecessors, (1998), 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) [2022-01-18 22:53:48,840 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 111.0) internal successors, (1998), 18 states have internal predecessors, (1998), 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) [2022-01-18 22:53:48,840 INFO L186 Difference]: Start difference. First operand has 120 places, 94 transitions, 271 flow. Second operand 17 states and 1572 transitions. [2022-01-18 22:53:48,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 162 transitions, 984 flow [2022-01-18 22:53:48,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 162 transitions, 918 flow, removed 28 selfloop flow, removed 9 redundant places. [2022-01-18 22:53:48,851 INFO L242 Difference]: Finished difference. Result has 136 places, 101 transitions, 432 flow [2022-01-18 22:53:48,851 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=432, PETRI_PLACES=136, PETRI_TRANSITIONS=101} [2022-01-18 22:53:48,852 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 33 predicate places. [2022-01-18 22:53:48,853 INFO L470 AbstractCegarLoop]: Abstraction has has 136 places, 101 transitions, 432 flow [2022-01-18 22:53:48,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.28571428571429) internal successors, (625), 7 states have internal predecessors, (625), 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) [2022-01-18 22:53:48,853 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:53:48,853 INFO L254 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, 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] [2022-01-18 22:53:48,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 22:53:48,854 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 22:53:48,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:53:48,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1387759690, now seen corresponding path program 1 times [2022-01-18 22:53:48,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:53:48,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652398506] [2022-01-18 22:53:48,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:53:48,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:53:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:53:48,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:53:48,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:53:48,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652398506] [2022-01-18 22:53:48,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652398506] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:53:48,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:53:48,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 22:53:48,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100826365] [2022-01-18 22:53:48,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:53:48,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 22:53:48,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:53:48,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 22:53:48,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-18 22:53:48,991 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 111 [2022-01-18 22:53:48,992 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 101 transitions, 432 flow. Second operand has 8 states, 8 states have (on average 89.125) internal successors, (713), 8 states have internal predecessors, (713), 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) [2022-01-18 22:53:48,992 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:53:48,992 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 111 [2022-01-18 22:53:48,992 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:53:49,145 INFO L129 PetriNetUnfolder]: 148/527 cut-off events. [2022-01-18 22:53:49,145 INFO L130 PetriNetUnfolder]: For 6385/7459 co-relation queries the response was YES. [2022-01-18 22:53:49,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2679 conditions, 527 events. 148/527 cut-off events. For 6385/7459 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2715 event pairs, 14 based on Foata normal form. 15/515 useless extension candidates. Maximal degree in co-relation 2615. Up to 170 conditions per place. [2022-01-18 22:53:49,149 INFO L132 encePairwiseOnDemand]: 102/111 looper letters, 23 selfloop transitions, 5 changer transitions 34/132 dead transitions. [2022-01-18 22:53:49,149 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 132 transitions, 1117 flow [2022-01-18 22:53:49,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 22:53:49,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-18 22:53:49,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1011 transitions. [2022-01-18 22:53:49,152 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.828009828009828 [2022-01-18 22:53:49,152 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1011 transitions. [2022-01-18 22:53:49,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1011 transitions. [2022-01-18 22:53:49,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:53:49,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1011 transitions. [2022-01-18 22:53:49,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 91.9090909090909) internal successors, (1011), 11 states have internal predecessors, (1011), 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) [2022-01-18 22:53:49,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 111.0) internal successors, (1332), 12 states have internal predecessors, (1332), 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) [2022-01-18 22:53:49,156 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 111.0) internal successors, (1332), 12 states have internal predecessors, (1332), 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) [2022-01-18 22:53:49,157 INFO L186 Difference]: Start difference. First operand has 136 places, 101 transitions, 432 flow. Second operand 11 states and 1011 transitions. [2022-01-18 22:53:49,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 132 transitions, 1117 flow [2022-01-18 22:53:49,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 132 transitions, 784 flow, removed 163 selfloop flow, removed 13 redundant places. [2022-01-18 22:53:49,166 INFO L242 Difference]: Finished difference. Result has 129 places, 93 transitions, 314 flow [2022-01-18 22:53:49,166 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=314, PETRI_PLACES=129, PETRI_TRANSITIONS=93} [2022-01-18 22:53:49,166 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 26 predicate places. [2022-01-18 22:53:49,167 INFO L470 AbstractCegarLoop]: Abstraction has has 129 places, 93 transitions, 314 flow [2022-01-18 22:53:49,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 89.125) internal successors, (713), 8 states have internal predecessors, (713), 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) [2022-01-18 22:53:49,167 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:53:49,167 INFO L254 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, 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] [2022-01-18 22:53:49,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 22:53:49,167 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 22:53:49,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:53:49,168 INFO L85 PathProgramCache]: Analyzing trace with hash 644322064, now seen corresponding path program 1 times [2022-01-18 22:53:49,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:53:49,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381406601] [2022-01-18 22:53:49,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:53:49,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:53:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:53:49,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:53:49,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:53:49,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381406601] [2022-01-18 22:53:49,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381406601] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:53:49,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:53:49,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:53:49,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633613948] [2022-01-18 22:53:49,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:53:49,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:53:49,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:53:49,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:53:49,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:53:49,248 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 111 [2022-01-18 22:53:49,248 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 93 transitions, 314 flow. Second operand has 7 states, 7 states have (on average 91.28571428571429) internal successors, (639), 7 states have internal predecessors, (639), 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) [2022-01-18 22:53:49,248 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:53:49,248 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 111 [2022-01-18 22:53:49,248 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:53:49,337 INFO L129 PetriNetUnfolder]: 45/258 cut-off events. [2022-01-18 22:53:49,337 INFO L130 PetriNetUnfolder]: For 719/859 co-relation queries the response was YES. [2022-01-18 22:53:49,338 INFO L84 FinitePrefix]: Finished finitePrefix Result has 824 conditions, 258 events. 45/258 cut-off events. For 719/859 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 914 event pairs, 5 based on Foata normal form. 4/250 useless extension candidates. Maximal degree in co-relation 785. Up to 63 conditions per place. [2022-01-18 22:53:49,339 INFO L132 encePairwiseOnDemand]: 104/111 looper letters, 22 selfloop transitions, 4 changer transitions 16/114 dead transitions. [2022-01-18 22:53:49,339 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 114 transitions, 624 flow [2022-01-18 22:53:49,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 22:53:49,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-18 22:53:49,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 931 transitions. [2022-01-18 22:53:49,341 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8387387387387387 [2022-01-18 22:53:49,341 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 931 transitions. [2022-01-18 22:53:49,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 931 transitions. [2022-01-18 22:53:49,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:53:49,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 931 transitions. [2022-01-18 22:53:49,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.1) internal successors, (931), 10 states have internal predecessors, (931), 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) [2022-01-18 22:53:49,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 111.0) internal successors, (1221), 11 states have internal predecessors, (1221), 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) [2022-01-18 22:53:49,344 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 111.0) internal successors, (1221), 11 states have internal predecessors, (1221), 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) [2022-01-18 22:53:49,344 INFO L186 Difference]: Start difference. First operand has 129 places, 93 transitions, 314 flow. Second operand 10 states and 931 transitions. [2022-01-18 22:53:49,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 114 transitions, 624 flow [2022-01-18 22:53:49,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 114 transitions, 490 flow, removed 50 selfloop flow, removed 17 redundant places. [2022-01-18 22:53:49,347 INFO L242 Difference]: Finished difference. Result has 122 places, 93 transitions, 275 flow [2022-01-18 22:53:49,347 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=275, PETRI_PLACES=122, PETRI_TRANSITIONS=93} [2022-01-18 22:53:49,348 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 19 predicate places. [2022-01-18 22:53:49,348 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 93 transitions, 275 flow [2022-01-18 22:53:49,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 91.28571428571429) internal successors, (639), 7 states have internal predecessors, (639), 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) [2022-01-18 22:53:49,348 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:53:49,348 INFO L254 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, 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] [2022-01-18 22:53:49,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 22:53:49,349 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 22:53:49,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:53:49,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1288274173, now seen corresponding path program 1 times [2022-01-18 22:53:49,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:53:49,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177905207] [2022-01-18 22:53:49,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:53:49,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:53:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:53:49,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:53:49,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:53:49,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177905207] [2022-01-18 22:53:49,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177905207] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:53:49,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:53:49,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:53:49,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98677223] [2022-01-18 22:53:49,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:53:49,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:53:49,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:53:49,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:53:49,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:53:49,434 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 111 [2022-01-18 22:53:49,434 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 93 transitions, 275 flow. Second operand has 7 states, 7 states have (on average 91.42857142857143) internal successors, (640), 7 states have internal predecessors, (640), 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) [2022-01-18 22:53:49,434 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:53:49,434 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 111 [2022-01-18 22:53:49,434 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:53:49,516 INFO L129 PetriNetUnfolder]: 29/235 cut-off events. [2022-01-18 22:53:49,517 INFO L130 PetriNetUnfolder]: For 288/328 co-relation queries the response was YES. [2022-01-18 22:53:49,517 INFO L84 FinitePrefix]: Finished finitePrefix Result has 556 conditions, 235 events. 29/235 cut-off events. For 288/328 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 806 event pairs, 11 based on Foata normal form. 2/227 useless extension candidates. Maximal degree in co-relation 535. Up to 44 conditions per place. [2022-01-18 22:53:49,518 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 24 selfloop transitions, 3 changer transitions 10/109 dead transitions. [2022-01-18 22:53:49,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 109 transitions, 470 flow [2022-01-18 22:53:49,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 22:53:49,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-18 22:53:49,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 837 transitions. [2022-01-18 22:53:49,520 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8378378378378378 [2022-01-18 22:53:49,520 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 837 transitions. [2022-01-18 22:53:49,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 837 transitions. [2022-01-18 22:53:49,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:53:49,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 837 transitions. [2022-01-18 22:53:49,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 93.0) internal successors, (837), 9 states have internal predecessors, (837), 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) [2022-01-18 22:53:49,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 111.0) internal successors, (1110), 10 states have internal predecessors, (1110), 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) [2022-01-18 22:53:49,523 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 111.0) internal successors, (1110), 10 states have internal predecessors, (1110), 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) [2022-01-18 22:53:49,523 INFO L186 Difference]: Start difference. First operand has 122 places, 93 transitions, 275 flow. Second operand 9 states and 837 transitions. [2022-01-18 22:53:49,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 109 transitions, 470 flow [2022-01-18 22:53:49,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 109 transitions, 432 flow, removed 14 selfloop flow, removed 9 redundant places. [2022-01-18 22:53:49,525 INFO L242 Difference]: Finished difference. Result has 122 places, 93 transitions, 278 flow [2022-01-18 22:53:49,526 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=278, PETRI_PLACES=122, PETRI_TRANSITIONS=93} [2022-01-18 22:53:49,526 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 19 predicate places. [2022-01-18 22:53:49,526 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 93 transitions, 278 flow [2022-01-18 22:53:49,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 91.42857142857143) internal successors, (640), 7 states have internal predecessors, (640), 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) [2022-01-18 22:53:49,527 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:53:49,527 INFO L254 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, 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] [2022-01-18 22:53:49,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 22:53:49,527 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 22:53:49,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:53:49,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1788436744, now seen corresponding path program 1 times [2022-01-18 22:53:49,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:53:49,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112355345] [2022-01-18 22:53:49,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:53:49,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:53:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:53:49,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:53:49,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:53:49,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112355345] [2022-01-18 22:53:49,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112355345] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:53:49,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:53:49,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 22:53:49,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657541483] [2022-01-18 22:53:49,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:53:49,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 22:53:49,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:53:49,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 22:53:49,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-18 22:53:49,604 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 111 [2022-01-18 22:53:49,605 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 93 transitions, 278 flow. Second operand has 8 states, 8 states have (on average 89.375) internal successors, (715), 8 states have internal predecessors, (715), 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) [2022-01-18 22:53:49,605 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:53:49,605 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 111 [2022-01-18 22:53:49,605 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:53:49,708 INFO L129 PetriNetUnfolder]: 33/233 cut-off events. [2022-01-18 22:53:49,708 INFO L130 PetriNetUnfolder]: For 322/425 co-relation queries the response was YES. [2022-01-18 22:53:49,709 INFO L84 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 233 events. 33/233 cut-off events. For 322/425 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 797 event pairs, 14 based on Foata normal form. 4/225 useless extension candidates. Maximal degree in co-relation 575. Up to 54 conditions per place. [2022-01-18 22:53:49,709 INFO L132 encePairwiseOnDemand]: 103/111 looper letters, 20 selfloop transitions, 4 changer transitions 13/107 dead transitions. [2022-01-18 22:53:49,709 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 107 transitions, 449 flow [2022-01-18 22:53:49,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 22:53:49,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-18 22:53:49,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 906 transitions. [2022-01-18 22:53:49,711 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8162162162162162 [2022-01-18 22:53:49,711 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 906 transitions. [2022-01-18 22:53:49,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 906 transitions. [2022-01-18 22:53:49,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:53:49,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 906 transitions. [2022-01-18 22:53:49,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 90.6) internal successors, (906), 10 states have internal predecessors, (906), 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) [2022-01-18 22:53:49,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 111.0) internal successors, (1221), 11 states have internal predecessors, (1221), 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) [2022-01-18 22:53:49,714 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 111.0) internal successors, (1221), 11 states have internal predecessors, (1221), 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) [2022-01-18 22:53:49,714 INFO L186 Difference]: Start difference. First operand has 122 places, 93 transitions, 278 flow. Second operand 10 states and 906 transitions. [2022-01-18 22:53:49,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 107 transitions, 449 flow [2022-01-18 22:53:49,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 107 transitions, 399 flow, removed 21 selfloop flow, removed 8 redundant places. [2022-01-18 22:53:49,717 INFO L242 Difference]: Finished difference. Result has 125 places, 92 transitions, 279 flow [2022-01-18 22:53:49,717 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=279, PETRI_PLACES=125, PETRI_TRANSITIONS=92} [2022-01-18 22:53:49,717 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 22 predicate places. [2022-01-18 22:53:49,717 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 92 transitions, 279 flow [2022-01-18 22:53:49,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 89.375) internal successors, (715), 8 states have internal predecessors, (715), 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) [2022-01-18 22:53:49,718 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:53:49,718 INFO L254 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, 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] [2022-01-18 22:53:49,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 22:53:49,718 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 22:53:49,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:53:49,718 INFO L85 PathProgramCache]: Analyzing trace with hash 12634660, now seen corresponding path program 1 times [2022-01-18 22:53:49,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:53:49,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261229617] [2022-01-18 22:53:49,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:53:49,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:53:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:53:49,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:53:49,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:53:49,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261229617] [2022-01-18 22:53:49,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261229617] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:53:49,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:53:49,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 22:53:49,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976648575] [2022-01-18 22:53:49,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:53:49,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 22:53:49,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:53:49,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 22:53:49,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-18 22:53:49,792 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 111 [2022-01-18 22:53:49,792 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 92 transitions, 279 flow. Second operand has 8 states, 8 states have (on average 89.375) internal successors, (715), 8 states have internal predecessors, (715), 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) [2022-01-18 22:53:49,793 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:53:49,793 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 111 [2022-01-18 22:53:49,793 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:53:49,884 INFO L129 PetriNetUnfolder]: 18/211 cut-off events. [2022-01-18 22:53:49,885 INFO L130 PetriNetUnfolder]: For 270/307 co-relation queries the response was YES. [2022-01-18 22:53:49,885 INFO L84 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 211 events. 18/211 cut-off events. For 270/307 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 725 event pairs, 4 based on Foata normal form. 4/208 useless extension candidates. Maximal degree in co-relation 436. Up to 25 conditions per place. [2022-01-18 22:53:49,886 INFO L132 encePairwiseOnDemand]: 102/111 looper letters, 18 selfloop transitions, 5 changer transitions 18/111 dead transitions. [2022-01-18 22:53:49,886 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 111 transitions, 497 flow [2022-01-18 22:53:49,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 22:53:49,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-18 22:53:49,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 998 transitions. [2022-01-18 22:53:49,888 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8173628173628174 [2022-01-18 22:53:49,888 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 998 transitions. [2022-01-18 22:53:49,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 998 transitions. [2022-01-18 22:53:49,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:53:49,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 998 transitions. [2022-01-18 22:53:49,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 90.72727272727273) internal successors, (998), 11 states have internal predecessors, (998), 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) [2022-01-18 22:53:49,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 111.0) internal successors, (1332), 12 states have internal predecessors, (1332), 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) [2022-01-18 22:53:49,892 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 111.0) internal successors, (1332), 12 states have internal predecessors, (1332), 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) [2022-01-18 22:53:49,892 INFO L186 Difference]: Start difference. First operand has 125 places, 92 transitions, 279 flow. Second operand 11 states and 998 transitions. [2022-01-18 22:53:49,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 111 transitions, 497 flow [2022-01-18 22:53:49,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 111 transitions, 379 flow, removed 50 selfloop flow, removed 14 redundant places. [2022-01-18 22:53:49,894 INFO L242 Difference]: Finished difference. Result has 123 places, 90 transitions, 248 flow [2022-01-18 22:53:49,895 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=248, PETRI_PLACES=123, PETRI_TRANSITIONS=90} [2022-01-18 22:53:49,897 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 20 predicate places. [2022-01-18 22:53:49,897 INFO L470 AbstractCegarLoop]: Abstraction has has 123 places, 90 transitions, 248 flow [2022-01-18 22:53:49,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 89.375) internal successors, (715), 8 states have internal predecessors, (715), 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) [2022-01-18 22:53:49,897 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:53:49,897 INFO L254 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, 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] [2022-01-18 22:53:49,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-18 22:53:49,897 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 22:53:49,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:53:49,898 INFO L85 PathProgramCache]: Analyzing trace with hash -561098704, now seen corresponding path program 1 times [2022-01-18 22:53:49,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:53:49,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893728092] [2022-01-18 22:53:49,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:53:49,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:53:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:53:49,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:53:49,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:53:49,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893728092] [2022-01-18 22:53:49,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893728092] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:53:49,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:53:49,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:53:49,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77195818] [2022-01-18 22:53:49,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:53:49,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:53:49,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:53:49,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:53:49,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:53:49,980 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 111 [2022-01-18 22:53:49,981 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 90 transitions, 248 flow. Second operand has 7 states, 7 states have (on average 94.85714285714286) internal successors, (664), 7 states have internal predecessors, (664), 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) [2022-01-18 22:53:49,981 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:53:49,981 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 111 [2022-01-18 22:53:49,981 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:53:50,073 INFO L129 PetriNetUnfolder]: 6/116 cut-off events. [2022-01-18 22:53:50,073 INFO L130 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2022-01-18 22:53:50,073 INFO L84 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 116 events. 6/116 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 134 event pairs, 2 based on Foata normal form. 2/115 useless extension candidates. Maximal degree in co-relation 202. Up to 10 conditions per place. [2022-01-18 22:53:50,074 INFO L132 encePairwiseOnDemand]: 104/111 looper letters, 0 selfloop transitions, 0 changer transitions 95/95 dead transitions. [2022-01-18 22:53:50,074 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 95 transitions, 312 flow [2022-01-18 22:53:50,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 22:53:50,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-18 22:53:50,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 952 transitions. [2022-01-18 22:53:50,075 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8576576576576577 [2022-01-18 22:53:50,075 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 952 transitions. [2022-01-18 22:53:50,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 952 transitions. [2022-01-18 22:53:50,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:53:50,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 952 transitions. [2022-01-18 22:53:50,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 95.2) internal successors, (952), 10 states have internal predecessors, (952), 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) [2022-01-18 22:53:50,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 111.0) internal successors, (1221), 11 states have internal predecessors, (1221), 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) [2022-01-18 22:53:50,079 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 111.0) internal successors, (1221), 11 states have internal predecessors, (1221), 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) [2022-01-18 22:53:50,079 INFO L186 Difference]: Start difference. First operand has 123 places, 90 transitions, 248 flow. Second operand 10 states and 952 transitions. [2022-01-18 22:53:50,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 95 transitions, 312 flow [2022-01-18 22:53:50,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 95 transitions, 264 flow, removed 16 selfloop flow, removed 11 redundant places. [2022-01-18 22:53:50,081 INFO L242 Difference]: Finished difference. Result has 113 places, 0 transitions, 0 flow [2022-01-18 22:53:50,081 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=113, PETRI_TRANSITIONS=0} [2022-01-18 22:53:50,081 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 10 predicate places. [2022-01-18 22:53:50,081 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 0 transitions, 0 flow [2022-01-18 22:53:50,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 94.85714285714286) internal successors, (664), 7 states have internal predecessors, (664), 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) [2022-01-18 22:53:50,086 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-01-18 22:53:50,086 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 5 remaining) [2022-01-18 22:53:50,087 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 5 remaining) [2022-01-18 22:53:50,087 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 5 remaining) [2022-01-18 22:53:50,087 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION (0 of 5 remaining) [2022-01-18 22:53:50,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 22:53:50,089 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:53:50,091 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 22:53:50,091 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 22:53:50,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 10:53:50 BasicIcfg [2022-01-18 22:53:50,097 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 22:53:50,098 INFO L158 Benchmark]: Toolchain (without parser) took 3763.53ms. Allocated memory was 358.6MB in the beginning and 432.0MB in the end (delta: 73.4MB). Free memory was 304.3MB in the beginning and 391.3MB in the end (delta: -87.0MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 22:53:50,098 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 358.6MB. Free memory is still 321.9MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 22:53:50,098 INFO L158 Benchmark]: CACSL2BoogieTranslator took 375.47ms. Allocated memory was 358.6MB in the beginning and 432.0MB in the end (delta: 73.4MB). Free memory was 304.1MB in the beginning and 396.6MB in the end (delta: -92.5MB). Peak memory consumption was 7.2MB. Max. memory is 16.0GB. [2022-01-18 22:53:50,098 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.34ms. Allocated memory is still 432.0MB. Free memory was 396.6MB in the beginning and 394.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 22:53:50,098 INFO L158 Benchmark]: Boogie Preprocessor took 33.73ms. Allocated memory is still 432.0MB. Free memory was 394.5MB in the beginning and 392.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 22:53:50,099 INFO L158 Benchmark]: RCFGBuilder took 380.19ms. Allocated memory is still 432.0MB. Free memory was 392.4MB in the beginning and 377.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2022-01-18 22:53:50,099 INFO L158 Benchmark]: TraceAbstraction took 2940.56ms. Allocated memory is still 432.0MB. Free memory was 376.7MB in the beginning and 391.3MB in the end (delta: -14.6MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 22:53:50,100 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 358.6MB. Free memory is still 321.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 375.47ms. Allocated memory was 358.6MB in the beginning and 432.0MB in the end (delta: 73.4MB). Free memory was 304.1MB in the beginning and 396.6MB in the end (delta: -92.5MB). Peak memory consumption was 7.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 28.34ms. Allocated memory is still 432.0MB. Free memory was 396.6MB in the beginning and 394.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.73ms. Allocated memory is still 432.0MB. Free memory was 394.5MB in the beginning and 392.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 380.19ms. Allocated memory is still 432.0MB. Free memory was 392.4MB in the beginning and 377.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 2940.56ms. Allocated memory is still 432.0MB. Free memory was 376.7MB in the beginning and 391.3MB in the end (delta: -14.6MB). There was no memory consumed. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 with 1 thread instances CFG has 9 procedures, 142 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.9s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 422 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 422 mSDsluCounter, 634 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 606 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 460 IncrementalHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 164 mSDtfsCounter, 460 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=432occurred in iteration=3, InterpolantAutomatonStates: 97, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 635 NumberOfCodeBlocks, 635 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 626 ConstructedInterpolants, 0 QuantifiedInterpolants, 3378 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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! [2022-01-18 22:53:50,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...