/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-After.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 11:39:20,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 11:39:20,137 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 11:39:20,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 11:39:20,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 11:39:20,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 11:39:20,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 11:39:20,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 11:39:20,194 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 11:39:20,195 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 11:39:20,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 11:39:20,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 11:39:20,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 11:39:20,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 11:39:20,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 11:39:20,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 11:39:20,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 11:39:20,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 11:39:20,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 11:39:20,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 11:39:20,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 11:39:20,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 11:39:20,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 11:39:20,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 11:39:20,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-19 11:39:20,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 11:39:20,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 11:39:20,238 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 11:39:20,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 11:39:20,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 11:39:20,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 11:39:20,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 11:39:20,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 11:39:20,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 11:39:20,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 11:39:20,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 11:39:20,244 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-After.epf [2022-01-19 11:39:20,280 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 11:39:20,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 11:39:20,281 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 11:39:20,281 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 11:39:20,282 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 11:39:20,282 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 11:39:20,282 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 11:39:20,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 11:39:20,282 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 11:39:20,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 11:39:20,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 11:39:20,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 11:39:20,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 11:39:20,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 11:39:20,284 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 11:39:20,284 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 11:39:20,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 11:39:20,284 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 11:39:20,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 11:39:20,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 11:39:20,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 11:39:20,285 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 11:39:20,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 11:39:20,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 11:39:20,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 11:39:20,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 11:39:20,285 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 11:39:20,286 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 11:39:20,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 11:39:20,287 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 11:39:20,287 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 11:39:20,287 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=AFTER [2022-01-19 11:39:20,287 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 11:39:20,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 11:39:20,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 11:39:20,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 11:39:20,538 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 11:39:20,539 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 11:39:20,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2022-01-19 11:39:20,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3b9ec840/b53af29a97214f0880b26a0f8637ba85/FLAG4ec0e052c [2022-01-19 11:39:21,058 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 11:39:21,059 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2022-01-19 11:39:21,077 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3b9ec840/b53af29a97214f0880b26a0f8637ba85/FLAG4ec0e052c [2022-01-19 11:39:21,093 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3b9ec840/b53af29a97214f0880b26a0f8637ba85 [2022-01-19 11:39:21,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 11:39:21,097 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 11:39:21,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 11:39:21,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 11:39:21,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 11:39:21,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 11:39:21" (1/1) ... [2022-01-19 11:39:21,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d38454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:39:21, skipping insertion in model container [2022-01-19 11:39:21,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 11:39:21" (1/1) ... [2022-01-19 11:39:21,110 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 11:39:21,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 11:39:21,353 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-C-DAC/pthread-demo-datarace-1.i[820,833] [2022-01-19 11:39:21,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 11:39:21,652 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 11:39:21,660 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-C-DAC/pthread-demo-datarace-1.i[820,833] [2022-01-19 11:39:21,707 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 11:39:21,780 INFO L208 MainTranslator]: Completed translation [2022-01-19 11:39:21,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:39:21 WrapperNode [2022-01-19 11:39:21,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 11:39:21,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 11:39:21,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 11:39:21,783 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 11:39:21,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:39:21" (1/1) ... [2022-01-19 11:39:21,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:39:21" (1/1) ... [2022-01-19 11:39:21,839 INFO L137 Inliner]: procedures = 364, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2022-01-19 11:39:21,840 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 11:39:21,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 11:39:21,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 11:39:21,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 11:39:21,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:39:21" (1/1) ... [2022-01-19 11:39:21,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:39:21" (1/1) ... [2022-01-19 11:39:21,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:39:21" (1/1) ... [2022-01-19 11:39:21,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:39:21" (1/1) ... [2022-01-19 11:39:21,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:39:21" (1/1) ... [2022-01-19 11:39:21,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:39:21" (1/1) ... [2022-01-19 11:39:21,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:39:21" (1/1) ... [2022-01-19 11:39:21,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 11:39:21,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 11:39:21,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 11:39:21,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 11:39:21,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:39:21" (1/1) ... [2022-01-19 11:39:21,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 11:39:21,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 11:39:21,917 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) [2022-01-19 11:39:21,931 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 [2022-01-19 11:39:21,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 11:39:21,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 11:39:21,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 11:39:21,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 11:39:21,952 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-01-19 11:39:21,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 11:39:21,952 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2022-01-19 11:39:21,952 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2022-01-19 11:39:21,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 11:39:21,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 11:39:21,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 11:39:21,955 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 11:39:22,109 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 11:39:22,110 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 11:39:22,276 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 11:39:22,281 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 11:39:22,282 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-19 11:39:22,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 11:39:22 BoogieIcfgContainer [2022-01-19 11:39:22,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 11:39:22,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 11:39:22,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 11:39:22,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 11:39:22,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 11:39:21" (1/3) ... [2022-01-19 11:39:22,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@725c93f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 11:39:22, skipping insertion in model container [2022-01-19 11:39:22,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:39:21" (2/3) ... [2022-01-19 11:39:22,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@725c93f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 11:39:22, skipping insertion in model container [2022-01-19 11:39:22,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 11:39:22" (3/3) ... [2022-01-19 11:39:22,292 INFO L111 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2022-01-19 11:39:22,299 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 11:39:22,300 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 11:39:22,300 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 11:39:22,344 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,344 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,344 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,345 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,345 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,345 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,346 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,346 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,346 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,346 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,346 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,347 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,347 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,347 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,347 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,348 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,348 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,349 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,350 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,350 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,350 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,350 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,353 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,354 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,354 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,354 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,355 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,355 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,355 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,355 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,356 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,356 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,357 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,357 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,357 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,357 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,357 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,357 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,358 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,358 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,358 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,358 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,358 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,358 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,358 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,359 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,361 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,362 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,362 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,362 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,362 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,362 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,362 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,363 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,364 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:39:22,369 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-01-19 11:39:22,419 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 11:39:22,426 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 [2022-01-19 11:39:22,427 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-19 11:39:22,437 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 94 places, 97 transitions, 202 flow [2022-01-19 11:39:22,493 INFO L129 PetriNetUnfolder]: 7/96 cut-off events. [2022-01-19 11:39:22,493 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-01-19 11:39:22,496 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 96 events. 7/96 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 82 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2022-01-19 11:39:22,496 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 97 transitions, 202 flow [2022-01-19 11:39:22,500 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 86 transitions, 178 flow [2022-01-19 11:39:22,518 INFO L129 PetriNetUnfolder]: 6/85 cut-off events. [2022-01-19 11:39:22,518 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-01-19 11:39:22,519 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:39:22,519 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] [2022-01-19 11:39:22,520 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-19 11:39:22,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:39:22,525 INFO L85 PathProgramCache]: Analyzing trace with hash 730854198, now seen corresponding path program 1 times [2022-01-19 11:39:22,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:39:22,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480916290] [2022-01-19 11:39:22,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:39:22,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:39:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:39:22,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 11:39:22,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:39:22,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480916290] [2022-01-19 11:39:22,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480916290] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:39:22,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:39:22,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 11:39:22,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509399707] [2022-01-19 11:39:22,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:39:22,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 11:39:22,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:39:22,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 11:39:22,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 11:39:22,799 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 97 [2022-01-19 11:39:22,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 86 transitions, 178 flow. Second operand has 2 states, 2 states have (on average 89.0) internal successors, (178), 2 states have internal predecessors, (178), 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) [2022-01-19 11:39:22,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:39:22,802 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 97 [2022-01-19 11:39:22,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:39:22,825 INFO L129 PetriNetUnfolder]: 2/80 cut-off events. [2022-01-19 11:39:22,826 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-01-19 11:39:22,827 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 80 events. 2/80 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 4/81 useless extension candidates. Maximal degree in co-relation 35. Up to 3 conditions per place. [2022-01-19 11:39:22,828 INFO L132 encePairwiseOnDemand]: 93/97 looper letters, 2 selfloop transitions, 0 changer transitions 0/80 dead transitions. [2022-01-19 11:39:22,828 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 80 transitions, 170 flow [2022-01-19 11:39:22,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 11:39:22,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 11:39:22,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 180 transitions. [2022-01-19 11:39:22,840 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9278350515463918 [2022-01-19 11:39:22,840 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 180 transitions. [2022-01-19 11:39:22,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 180 transitions. [2022-01-19 11:39:22,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:39:22,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 180 transitions. [2022-01-19 11:39:22,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 90.0) internal successors, (180), 2 states have internal predecessors, (180), 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) [2022-01-19 11:39:22,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 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) [2022-01-19 11:39:22,856 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 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) [2022-01-19 11:39:22,858 INFO L186 Difference]: Start difference. First operand has 84 places, 86 transitions, 178 flow. Second operand 2 states and 180 transitions. [2022-01-19 11:39:22,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 80 transitions, 170 flow [2022-01-19 11:39:22,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 80 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 11:39:22,869 INFO L242 Difference]: Finished difference. Result has 81 places, 80 transitions, 162 flow [2022-01-19 11:39:22,870 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=162, PETRI_PLACES=81, PETRI_TRANSITIONS=80} [2022-01-19 11:39:22,873 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, -3 predicate places. [2022-01-19 11:39:22,873 INFO L470 AbstractCegarLoop]: Abstraction has has 81 places, 80 transitions, 162 flow [2022-01-19 11:39:22,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 89.0) internal successors, (178), 2 states have internal predecessors, (178), 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) [2022-01-19 11:39:22,874 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:39:22,874 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] [2022-01-19 11:39:22,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 11:39:22,875 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-19 11:39:22,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:39:22,875 INFO L85 PathProgramCache]: Analyzing trace with hash -137135436, now seen corresponding path program 1 times [2022-01-19 11:39:22,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:39:22,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647185861] [2022-01-19 11:39:22,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:39:22,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:39:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:39:22,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 11:39:22,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:39:22,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647185861] [2022-01-19 11:39:22,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647185861] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:39:22,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:39:22,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 11:39:22,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783102631] [2022-01-19 11:39:22,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:39:22,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 11:39:22,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:39:22,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 11:39:22,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 11:39:22,972 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 97 [2022-01-19 11:39:22,973 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 80 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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) [2022-01-19 11:39:22,973 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:39:22,974 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 97 [2022-01-19 11:39:22,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:39:23,006 INFO L129 PetriNetUnfolder]: 2/87 cut-off events. [2022-01-19 11:39:23,006 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-01-19 11:39:23,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 87 events. 2/87 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 100. Up to 10 conditions per place. [2022-01-19 11:39:23,008 INFO L132 encePairwiseOnDemand]: 94/97 looper letters, 10 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2022-01-19 11:39:23,008 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 83 transitions, 192 flow [2022-01-19 11:39:23,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 11:39:23,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 11:39:23,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2022-01-19 11:39:23,010 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8694158075601375 [2022-01-19 11:39:23,011 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 253 transitions. [2022-01-19 11:39:23,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 253 transitions. [2022-01-19 11:39:23,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:39:23,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 253 transitions. [2022-01-19 11:39:23,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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) [2022-01-19 11:39:23,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2022-01-19 11:39:23,014 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2022-01-19 11:39:23,014 INFO L186 Difference]: Start difference. First operand has 81 places, 80 transitions, 162 flow. Second operand 3 states and 253 transitions. [2022-01-19 11:39:23,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 83 transitions, 192 flow [2022-01-19 11:39:23,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 83 transitions, 192 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 11:39:23,017 INFO L242 Difference]: Finished difference. Result has 84 places, 81 transitions, 174 flow [2022-01-19 11:39:23,017 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=84, PETRI_TRANSITIONS=81} [2022-01-19 11:39:23,017 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 0 predicate places. [2022-01-19 11:39:23,018 INFO L470 AbstractCegarLoop]: Abstraction has has 84 places, 81 transitions, 174 flow [2022-01-19 11:39:23,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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) [2022-01-19 11:39:23,018 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:39:23,018 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] [2022-01-19 11:39:23,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 11:39:23,019 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-19 11:39:23,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:39:23,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1409393791, now seen corresponding path program 1 times [2022-01-19 11:39:23,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:39:23,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730508247] [2022-01-19 11:39:23,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:39:23,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:39:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:39:23,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 11:39:23,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:39:23,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730508247] [2022-01-19 11:39:23,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730508247] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 11:39:23,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774488675] [2022-01-19 11:39:23,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:39:23,122 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 11:39:23,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 11:39:23,124 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 11:39:23,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-19 11:39:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:39:23,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-19 11:39:23,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 11:39:23,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 11:39:23,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 11:39:23,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774488675] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:39:23,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 11:39:23,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-01-19 11:39:23,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650842472] [2022-01-19 11:39:23,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:39:23,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 11:39:23,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:39:23,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 11:39:23,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-19 11:39:23,334 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 97 [2022-01-19 11:39:23,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 81 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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) [2022-01-19 11:39:23,334 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:39:23,334 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 97 [2022-01-19 11:39:23,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:39:23,383 INFO L129 PetriNetUnfolder]: 2/97 cut-off events. [2022-01-19 11:39:23,383 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 11:39:23,385 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 97 events. 2/97 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 114. Up to 9 conditions per place. [2022-01-19 11:39:23,386 INFO L132 encePairwiseOnDemand]: 94/97 looper letters, 9 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2022-01-19 11:39:23,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 84 transitions, 202 flow [2022-01-19 11:39:23,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 11:39:23,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 11:39:23,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 255 transitions. [2022-01-19 11:39:23,388 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8762886597938144 [2022-01-19 11:39:23,389 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 255 transitions. [2022-01-19 11:39:23,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 255 transitions. [2022-01-19 11:39:23,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:39:23,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 255 transitions. [2022-01-19 11:39:23,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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) [2022-01-19 11:39:23,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2022-01-19 11:39:23,391 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2022-01-19 11:39:23,392 INFO L186 Difference]: Start difference. First operand has 84 places, 81 transitions, 174 flow. Second operand 3 states and 255 transitions. [2022-01-19 11:39:23,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 84 transitions, 202 flow [2022-01-19 11:39:23,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 84 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 11:39:23,394 INFO L242 Difference]: Finished difference. Result has 86 places, 82 transitions, 184 flow [2022-01-19 11:39:23,394 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=86, PETRI_TRANSITIONS=82} [2022-01-19 11:39:23,395 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 2 predicate places. [2022-01-19 11:39:23,395 INFO L470 AbstractCegarLoop]: Abstraction has has 86 places, 82 transitions, 184 flow [2022-01-19 11:39:23,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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) [2022-01-19 11:39:23,396 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:39:23,396 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, 1] [2022-01-19 11:39:23,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-19 11:39:23,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 11:39:23,597 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-19 11:39:23,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:39:23,597 INFO L85 PathProgramCache]: Analyzing trace with hash -293330369, now seen corresponding path program 1 times [2022-01-19 11:39:23,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:39:23,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213819270] [2022-01-19 11:39:23,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:39:23,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:39:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:39:23,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 11:39:23,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:39:23,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213819270] [2022-01-19 11:39:23,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213819270] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 11:39:23,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219516721] [2022-01-19 11:39:23,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:39:23,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 11:39:23,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 11:39:23,694 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 11:39:23,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-19 11:39:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:39:23,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-19 11:39:23,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 11:39:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 11:39:23,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 11:39:24,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 11:39:24,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219516721] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 11:39:24,139 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 11:39:24,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-19 11:39:24,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596168002] [2022-01-19 11:39:24,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 11:39:24,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 11:39:24,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:39:24,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 11:39:24,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-01-19 11:39:24,143 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 97 [2022-01-19 11:39:24,144 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 82 transitions, 184 flow. Second operand has 10 states, 10 states have (on average 81.9) internal successors, (819), 10 states have internal predecessors, (819), 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) [2022-01-19 11:39:24,144 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:39:24,145 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 97 [2022-01-19 11:39:24,145 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:39:24,236 INFO L129 PetriNetUnfolder]: 2/110 cut-off events. [2022-01-19 11:39:24,237 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-01-19 11:39:24,239 INFO L84 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 110 events. 2/110 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 2/111 useless extension candidates. Maximal degree in co-relation 139. Up to 7 conditions per place. [2022-01-19 11:39:24,240 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 9 selfloop transitions, 9 changer transitions 0/90 dead transitions. [2022-01-19 11:39:24,240 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 90 transitions, 238 flow [2022-01-19 11:39:24,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 11:39:24,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 11:39:24,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 740 transitions. [2022-01-19 11:39:24,243 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.847651775486827 [2022-01-19 11:39:24,243 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 740 transitions. [2022-01-19 11:39:24,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 740 transitions. [2022-01-19 11:39:24,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:39:24,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 740 transitions. [2022-01-19 11:39:24,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 82.22222222222223) internal successors, (740), 9 states have internal predecessors, (740), 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) [2022-01-19 11:39:24,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 97.0) internal successors, (970), 10 states have internal predecessors, (970), 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) [2022-01-19 11:39:24,251 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 97.0) internal successors, (970), 10 states have internal predecessors, (970), 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) [2022-01-19 11:39:24,252 INFO L186 Difference]: Start difference. First operand has 86 places, 82 transitions, 184 flow. Second operand 9 states and 740 transitions. [2022-01-19 11:39:24,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 90 transitions, 238 flow [2022-01-19 11:39:24,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 90 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 11:39:24,257 INFO L242 Difference]: Finished difference. Result has 96 places, 88 transitions, 232 flow [2022-01-19 11:39:24,257 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=232, PETRI_PLACES=96, PETRI_TRANSITIONS=88} [2022-01-19 11:39:24,259 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 12 predicate places. [2022-01-19 11:39:24,259 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 88 transitions, 232 flow [2022-01-19 11:39:24,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 81.9) internal successors, (819), 10 states have internal predecessors, (819), 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) [2022-01-19 11:39:24,259 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:39:24,260 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 11:39:24,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-19 11:39:24,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-19 11:39:24,486 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-19 11:39:24,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:39:24,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1717411201, now seen corresponding path program 2 times [2022-01-19 11:39:24,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:39:24,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832588372] [2022-01-19 11:39:24,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:39:24,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:39:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:39:24,597 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-19 11:39:24,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:39:24,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832588372] [2022-01-19 11:39:24,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832588372] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 11:39:24,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108157094] [2022-01-19 11:39:24,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 11:39:24,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 11:39:24,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 11:39:24,604 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 11:39:24,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-19 11:39:24,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 11:39:24,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 11:39:24,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-19 11:39:24,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 11:39:24,822 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-19 11:39:24,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 11:39:24,946 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-19 11:39:24,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108157094] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 11:39:24,947 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 11:39:24,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-19 11:39:24,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996042515] [2022-01-19 11:39:24,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 11:39:24,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 11:39:24,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:39:24,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 11:39:24,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-01-19 11:39:24,950 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 97 [2022-01-19 11:39:24,951 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 88 transitions, 232 flow. Second operand has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 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) [2022-01-19 11:39:24,951 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:39:24,951 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 97 [2022-01-19 11:39:24,951 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:39:25,014 INFO L129 PetriNetUnfolder]: 2/120 cut-off events. [2022-01-19 11:39:25,015 INFO L130 PetriNetUnfolder]: For 7/21 co-relation queries the response was YES. [2022-01-19 11:39:25,015 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 120 events. 2/120 cut-off events. For 7/21 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 9/128 useless extension candidates. Maximal degree in co-relation 170. Up to 8 conditions per place. [2022-01-19 11:39:25,016 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 10 selfloop transitions, 9 changer transitions 0/96 dead transitions. [2022-01-19 11:39:25,016 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 96 transitions, 288 flow [2022-01-19 11:39:25,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 11:39:25,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 11:39:25,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 732 transitions. [2022-01-19 11:39:25,019 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8384879725085911 [2022-01-19 11:39:25,019 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 732 transitions. [2022-01-19 11:39:25,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 732 transitions. [2022-01-19 11:39:25,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:39:25,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 732 transitions. [2022-01-19 11:39:25,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 81.33333333333333) internal successors, (732), 9 states have internal predecessors, (732), 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) [2022-01-19 11:39:25,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 97.0) internal successors, (970), 10 states have internal predecessors, (970), 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) [2022-01-19 11:39:25,023 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 97.0) internal successors, (970), 10 states have internal predecessors, (970), 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) [2022-01-19 11:39:25,023 INFO L186 Difference]: Start difference. First operand has 96 places, 88 transitions, 232 flow. Second operand 9 states and 732 transitions. [2022-01-19 11:39:25,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 96 transitions, 288 flow [2022-01-19 11:39:25,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 96 transitions, 282 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-01-19 11:39:25,027 INFO L242 Difference]: Finished difference. Result has 106 places, 94 transitions, 276 flow [2022-01-19 11:39:25,027 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=276, PETRI_PLACES=106, PETRI_TRANSITIONS=94} [2022-01-19 11:39:25,028 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 22 predicate places. [2022-01-19 11:39:25,028 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 94 transitions, 276 flow [2022-01-19 11:39:25,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 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) [2022-01-19 11:39:25,029 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:39:25,029 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 11:39:25,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-19 11:39:25,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 11:39:25,256 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-19 11:39:25,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:39:25,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1447238555, now seen corresponding path program 3 times [2022-01-19 11:39:25,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:39:25,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769289625] [2022-01-19 11:39:25,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:39:25,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:39:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:39:25,351 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-19 11:39:25,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:39:25,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769289625] [2022-01-19 11:39:25,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769289625] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 11:39:25,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155609888] [2022-01-19 11:39:25,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 11:39:25,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 11:39:25,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 11:39:25,356 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 11:39:25,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-19 11:39:25,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-19 11:39:25,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 11:39:25,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-19 11:39:25,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 11:39:25,667 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-19 11:39:25,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 11:39:25,890 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-19 11:39:25,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155609888] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 11:39:25,890 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 11:39:25,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-01-19 11:39:25,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515403159] [2022-01-19 11:39:25,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 11:39:25,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 11:39:25,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:39:25,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 11:39:25,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-01-19 11:39:25,894 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 97 [2022-01-19 11:39:25,895 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 94 transitions, 276 flow. Second operand has 18 states, 18 states have (on average 81.0) internal successors, (1458), 18 states have internal predecessors, (1458), 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) [2022-01-19 11:39:25,896 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:39:25,896 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 97 [2022-01-19 11:39:25,896 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:39:26,058 INFO L129 PetriNetUnfolder]: 2/152 cut-off events. [2022-01-19 11:39:26,059 INFO L130 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-01-19 11:39:26,060 INFO L84 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 152 events. 2/152 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 92 event pairs, 0 based on Foata normal form. 4/155 useless extension candidates. Maximal degree in co-relation 263. Up to 11 conditions per place. [2022-01-19 11:39:26,061 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 14 selfloop transitions, 21 changer transitions 0/112 dead transitions. [2022-01-19 11:39:26,061 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 112 transitions, 442 flow [2022-01-19 11:39:26,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 11:39:26,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 11:39:26,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1698 transitions. [2022-01-19 11:39:26,066 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.833578792341679 [2022-01-19 11:39:26,066 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1698 transitions. [2022-01-19 11:39:26,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1698 transitions. [2022-01-19 11:39:26,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:39:26,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1698 transitions. [2022-01-19 11:39:26,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 80.85714285714286) internal successors, (1698), 21 states have internal predecessors, (1698), 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) [2022-01-19 11:39:26,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 97.0) internal successors, (2134), 22 states have internal predecessors, (2134), 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) [2022-01-19 11:39:26,076 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 97.0) internal successors, (2134), 22 states have internal predecessors, (2134), 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) [2022-01-19 11:39:26,076 INFO L186 Difference]: Start difference. First operand has 106 places, 94 transitions, 276 flow. Second operand 21 states and 1698 transitions. [2022-01-19 11:39:26,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 112 transitions, 442 flow [2022-01-19 11:39:26,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 112 transitions, 428 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-01-19 11:39:26,083 INFO L242 Difference]: Finished difference. Result has 130 places, 107 transitions, 400 flow [2022-01-19 11:39:26,084 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=400, PETRI_PLACES=130, PETRI_TRANSITIONS=107} [2022-01-19 11:39:26,086 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 46 predicate places. [2022-01-19 11:39:26,086 INFO L470 AbstractCegarLoop]: Abstraction has has 130 places, 107 transitions, 400 flow [2022-01-19 11:39:26,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.0) internal successors, (1458), 18 states have internal predecessors, (1458), 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) [2022-01-19 11:39:26,087 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:39:26,087 INFO L254 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 11:39:26,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-19 11:39:26,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 11:39:26,300 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-19 11:39:26,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:39:26,300 INFO L85 PathProgramCache]: Analyzing trace with hash -692690511, now seen corresponding path program 4 times [2022-01-19 11:39:26,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:39:26,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446411733] [2022-01-19 11:39:26,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:39:26,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:39:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:39:26,495 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-19 11:39:26,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:39:26,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446411733] [2022-01-19 11:39:26,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446411733] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 11:39:26,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506508521] [2022-01-19 11:39:26,495 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 11:39:26,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 11:39:26,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 11:39:26,497 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 11:39:26,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-19 11:39:26,612 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 11:39:26,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 11:39:26,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-19 11:39:26,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 11:39:26,852 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-19 11:39:26,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 11:39:27,272 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-19 11:39:27,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506508521] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 11:39:27,272 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 11:39:27,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-01-19 11:39:27,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310354515] [2022-01-19 11:39:27,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 11:39:27,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-19 11:39:27,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:39:27,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-19 11:39:27,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-01-19 11:39:27,277 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 97 [2022-01-19 11:39:27,281 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 107 transitions, 400 flow. Second operand has 34 states, 34 states have (on average 81.0) internal successors, (2754), 34 states have internal predecessors, (2754), 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) [2022-01-19 11:39:27,281 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:39:27,282 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 97 [2022-01-19 11:39:27,282 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:39:27,835 INFO L129 PetriNetUnfolder]: 2/216 cut-off events. [2022-01-19 11:39:27,835 INFO L130 PetriNetUnfolder]: For 267/267 co-relation queries the response was YES. [2022-01-19 11:39:27,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 216 events. 2/216 cut-off events. For 267/267 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 92 event pairs, 0 based on Foata normal form. 8/223 useless extension candidates. Maximal degree in co-relation 485. Up to 27 conditions per place. [2022-01-19 11:39:27,838 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 22 selfloop transitions, 45 changer transitions 0/144 dead transitions. [2022-01-19 11:39:27,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 144 transitions, 822 flow [2022-01-19 11:39:27,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 11:39:27,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 11:39:27,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 3630 transitions. [2022-01-19 11:39:27,847 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8316151202749141 [2022-01-19 11:39:27,847 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 3630 transitions. [2022-01-19 11:39:27,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 3630 transitions. [2022-01-19 11:39:27,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:39:27,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 3630 transitions. [2022-01-19 11:39:27,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 80.66666666666667) internal successors, (3630), 45 states have internal predecessors, (3630), 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) [2022-01-19 11:39:27,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 97.0) internal successors, (4462), 46 states have internal predecessors, (4462), 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) [2022-01-19 11:39:27,864 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 97.0) internal successors, (4462), 46 states have internal predecessors, (4462), 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) [2022-01-19 11:39:27,864 INFO L186 Difference]: Start difference. First operand has 130 places, 107 transitions, 400 flow. Second operand 45 states and 3630 transitions. [2022-01-19 11:39:27,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 144 transitions, 822 flow [2022-01-19 11:39:27,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 144 transitions, 782 flow, removed 14 selfloop flow, removed 6 redundant places. [2022-01-19 11:39:27,869 INFO L242 Difference]: Finished difference. Result has 177 places, 132 transitions, 678 flow [2022-01-19 11:39:27,870 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=678, PETRI_PLACES=177, PETRI_TRANSITIONS=132} [2022-01-19 11:39:27,870 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 93 predicate places. [2022-01-19 11:39:27,870 INFO L470 AbstractCegarLoop]: Abstraction has has 177 places, 132 transitions, 678 flow [2022-01-19 11:39:27,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 81.0) internal successors, (2754), 34 states have internal predecessors, (2754), 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) [2022-01-19 11:39:27,871 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:39:27,872 INFO L254 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 11:39:27,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-19 11:39:28,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 11:39:28,086 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-19 11:39:28,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:39:28,086 INFO L85 PathProgramCache]: Analyzing trace with hash 166775881, now seen corresponding path program 5 times [2022-01-19 11:39:28,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:39:28,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912621886] [2022-01-19 11:39:28,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:39:28,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:39:28,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:39:28,564 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 0 proven. 855 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-19 11:39:28,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:39:28,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912621886] [2022-01-19 11:39:28,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912621886] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 11:39:28,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872862712] [2022-01-19 11:39:28,565 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-19 11:39:28,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 11:39:28,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 11:39:28,567 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 11:39:28,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-19 11:39:28,727 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2022-01-19 11:39:28,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 11:39:28,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-19 11:39:28,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 11:39:29,154 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked. [2022-01-19 11:39:29,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 11:39:29,549 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked. [2022-01-19 11:39:29,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872862712] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 11:39:29,550 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 11:39:29,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 9, 9] total 47 [2022-01-19 11:39:29,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954263157] [2022-01-19 11:39:29,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 11:39:29,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-19 11:39:29,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:39:29,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-19 11:39:29,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=1803, Unknown=0, NotChecked=0, Total=2162 [2022-01-19 11:39:29,556 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 97 [2022-01-19 11:39:29,559 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 132 transitions, 678 flow. Second operand has 47 states, 47 states have (on average 74.29787234042553) internal successors, (3492), 47 states have internal predecessors, (3492), 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) [2022-01-19 11:39:29,559 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:39:29,559 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 97 [2022-01-19 11:39:29,560 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:40:18,865 INFO L129 PetriNetUnfolder]: 2209/6985 cut-off events. [2022-01-19 11:40:18,865 INFO L130 PetriNetUnfolder]: For 20041/20041 co-relation queries the response was YES. [2022-01-19 11:40:18,897 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22861 conditions, 6985 events. 2209/6985 cut-off events. For 20041/20041 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 50444 event pairs, 20 based on Foata normal form. 308/7289 useless extension candidates. Maximal degree in co-relation 22836. Up to 928 conditions per place. [2022-01-19 11:40:18,928 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 961 selfloop transitions, 1927 changer transitions 0/2951 dead transitions. [2022-01-19 11:40:18,928 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1117 places, 2951 transitions, 26324 flow [2022-01-19 11:40:18,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 941 states. [2022-01-19 11:40:18,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 941 states. [2022-01-19 11:40:18,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 70848 transitions. [2022-01-19 11:40:19,003 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.776186772133177 [2022-01-19 11:40:19,003 INFO L72 ComplementDD]: Start complementDD. Operand 941 states and 70848 transitions. [2022-01-19 11:40:19,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 941 states and 70848 transitions. [2022-01-19 11:40:19,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:40:19,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 941 states and 70848 transitions. [2022-01-19 11:40:19,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 942 states, 941 states have (on average 75.29011689691818) internal successors, (70848), 941 states have internal predecessors, (70848), 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) [2022-01-19 11:40:19,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 942 states, 942 states have (on average 97.0) internal successors, (91374), 942 states have internal predecessors, (91374), 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) [2022-01-19 11:40:19,333 INFO L81 ComplementDD]: Finished complementDD. Result has 942 states, 942 states have (on average 97.0) internal successors, (91374), 942 states have internal predecessors, (91374), 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) [2022-01-19 11:40:19,334 INFO L186 Difference]: Start difference. First operand has 177 places, 132 transitions, 678 flow. Second operand 941 states and 70848 transitions. [2022-01-19 11:40:19,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1117 places, 2951 transitions, 26324 flow [2022-01-19 11:40:19,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1099 places, 2951 transitions, 25164 flow, removed 220 selfloop flow, removed 18 redundant places. [2022-01-19 11:40:19,426 INFO L242 Difference]: Finished difference. Result has 1379 places, 2119 transitions, 18814 flow [2022-01-19 11:40:19,427 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=941, PETRI_FLOW=18814, PETRI_PLACES=1379, PETRI_TRANSITIONS=2119} [2022-01-19 11:40:19,429 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 1295 predicate places. [2022-01-19 11:40:19,429 INFO L470 AbstractCegarLoop]: Abstraction has has 1379 places, 2119 transitions, 18814 flow [2022-01-19 11:40:19,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 74.29787234042553) internal successors, (3492), 47 states have internal predecessors, (3492), 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) [2022-01-19 11:40:19,430 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:40:19,430 INFO L254 CegarLoopForPetriNet]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 11:40:19,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-19 11:40:19,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 11:40:19,643 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-19 11:40:19,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:40:19,644 INFO L85 PathProgramCache]: Analyzing trace with hash -516955466, now seen corresponding path program 6 times [2022-01-19 11:40:19,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:40:19,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718261987] [2022-01-19 11:40:19,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:40:19,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:40:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:40:20,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1214 backedges. 0 proven. 976 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2022-01-19 11:40:20,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:40:20,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718261987] [2022-01-19 11:40:20,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718261987] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 11:40:20,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420017103] [2022-01-19 11:40:20,149 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-19 11:40:20,149 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 11:40:20,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 11:40:20,150 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 11:40:20,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-19 11:40:20,409 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2022-01-19 11:40:20,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 11:40:20,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-19 11:40:20,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 11:40:20,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1214 backedges. 31 proven. 238 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2022-01-19 11:40:20,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 11:40:21,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1214 backedges. 31 proven. 238 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2022-01-19 11:40:21,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420017103] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 11:40:21,598 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 11:40:21,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 17, 17] total 65 [2022-01-19 11:40:21,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577837316] [2022-01-19 11:40:21,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 11:40:21,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-01-19 11:40:21,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:40:21,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-01-19 11:40:21,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=594, Invalid=3566, Unknown=0, NotChecked=0, Total=4160 [2022-01-19 11:40:21,604 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 97 [2022-01-19 11:40:21,607 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1379 places, 2119 transitions, 18814 flow. Second operand has 65 states, 65 states have (on average 74.23076923076923) internal successors, (4825), 65 states have internal predecessors, (4825), 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) [2022-01-19 11:40:21,607 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:40:21,607 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 97 [2022-01-19 11:40:21,607 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:44:34,823 INFO L129 PetriNetUnfolder]: 4673/15415 cut-off events. [2022-01-19 11:44:34,824 INFO L130 PetriNetUnfolder]: For 12501653/12501752 co-relation queries the response was YES. [2022-01-19 11:44:35,199 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93802 conditions, 15415 events. 4673/15415 cut-off events. For 12501653/12501752 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 127388 event pairs, 20 based on Foata normal form. 734/16143 useless extension candidates. Maximal degree in co-relation 93497. Up to 1984 conditions per place. [2022-01-19 11:44:35,296 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 1974 selfloop transitions, 4834 changer transitions 0/6871 dead transitions. [2022-01-19 11:44:35,297 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3579 places, 6871 transitions, 125300 flow [2022-01-19 11:44:35,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2201 states. [2022-01-19 11:44:35,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2201 states. [2022-01-19 11:44:35,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 165332 transitions. [2022-01-19 11:44:35,687 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7743996402759757 [2022-01-19 11:44:35,687 INFO L72 ComplementDD]: Start complementDD. Operand 2201 states and 165332 transitions. [2022-01-19 11:44:35,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2201 states and 165332 transitions. [2022-01-19 11:44:35,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:44:35,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2201 states and 165332 transitions. [2022-01-19 11:44:35,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 2202 states, 2201 states have (on average 75.11676510676965) internal successors, (165332), 2201 states have internal predecessors, (165332), 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) [2022-01-19 11:44:36,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 2202 states, 2202 states have (on average 97.0) internal successors, (213594), 2202 states have internal predecessors, (213594), 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) [2022-01-19 11:44:36,197 INFO L81 ComplementDD]: Finished complementDD. Result has 2202 states, 2202 states have (on average 97.0) internal successors, (213594), 2202 states have internal predecessors, (213594), 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) [2022-01-19 11:44:36,198 INFO L186 Difference]: Start difference. First operand has 1379 places, 2119 transitions, 18814 flow. Second operand 2201 states and 165332 transitions. [2022-01-19 11:44:36,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 3579 places, 6871 transitions, 125300 flow [2022-01-19 11:44:45,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 3531 places, 6871 transitions, 118724 flow, removed 804 selfloop flow, removed 48 redundant places. [2022-01-19 11:44:45,311 INFO L242 Difference]: Finished difference. Result has 4086 places, 5079 transitions, 58746 flow [2022-01-19 11:44:45,315 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=15926, PETRI_DIFFERENCE_MINUEND_PLACES=1331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1974, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2201, PETRI_FLOW=58746, PETRI_PLACES=4086, PETRI_TRANSITIONS=5079} [2022-01-19 11:44:45,316 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 4002 predicate places. [2022-01-19 11:44:45,316 INFO L470 AbstractCegarLoop]: Abstraction has has 4086 places, 5079 transitions, 58746 flow [2022-01-19 11:44:45,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 74.23076923076923) internal successors, (4825), 65 states have internal predecessors, (4825), 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) [2022-01-19 11:44:45,317 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:44:45,318 INFO L254 CegarLoopForPetriNet]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 11:44:45,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-19 11:44:45,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 11:44:45,526 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-19 11:44:45,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:44:45,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1027475895, now seen corresponding path program 7 times [2022-01-19 11:44:45,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:44:45,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774961771] [2022-01-19 11:44:45,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:44:45,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:44:45,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:44:46,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2275 backedges. 29 proven. 1105 refuted. 0 times theorem prover too weak. 1141 trivial. 0 not checked. [2022-01-19 11:44:46,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:44:46,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774961771] [2022-01-19 11:44:46,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774961771] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 11:44:46,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573655897] [2022-01-19 11:44:46,137 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-19 11:44:46,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 11:44:46,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 11:44:46,138 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 11:44:46,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-19 11:44:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:44:46,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 36 conjunts are in the unsatisfiable core [2022-01-19 11:44:46,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 11:44:46,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2275 backedges. 29 proven. 1105 refuted. 0 times theorem prover too weak. 1141 trivial. 0 not checked. [2022-01-19 11:44:46,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 11:44:47,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2275 backedges. 29 proven. 1105 refuted. 0 times theorem prover too weak. 1141 trivial. 0 not checked. [2022-01-19 11:44:47,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573655897] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 11:44:47,617 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 11:44:47,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 43 [2022-01-19 11:44:47,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436954164] [2022-01-19 11:44:47,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 11:44:47,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-19 11:44:47,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:44:47,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-19 11:44:47,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2022-01-19 11:44:47,622 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 97 [2022-01-19 11:44:47,668 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 4086 places, 5079 transitions, 58746 flow. Second operand has 43 states, 43 states have (on average 81.04651162790698) internal successors, (3485), 43 states have internal predecessors, (3485), 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) [2022-01-19 11:44:47,668 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:44:47,668 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 97 [2022-01-19 11:44:47,668 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:45:02,580 INFO L129 PetriNetUnfolder]: 3043/12055 cut-off events. [2022-01-19 11:45:02,581 INFO L130 PetriNetUnfolder]: For 5861795/5863713 co-relation queries the response was YES. [2022-01-19 11:45:03,309 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82367 conditions, 12055 events. 3043/12055 cut-off events. For 5861795/5863713 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 101603 event pairs, 154 based on Foata normal form. 297/12284 useless extension candidates. Maximal degree in co-relation 81507. Up to 1369 conditions per place. [2022-01-19 11:45:03,471 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 27 selfloop transitions, 2651 changer transitions 0/5142 dead transitions. [2022-01-19 11:45:03,471 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 4145 places, 5142 transitions, 65940 flow [2022-01-19 11:45:03,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-19 11:45:03,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-01-19 11:45:03,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 4830 transitions. [2022-01-19 11:45:03,475 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8298969072164949 [2022-01-19 11:45:03,475 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 4830 transitions. [2022-01-19 11:45:03,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 4830 transitions. [2022-01-19 11:45:03,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:45:03,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 4830 transitions. [2022-01-19 11:45:03,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 80.5) internal successors, (4830), 60 states have internal predecessors, (4830), 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) [2022-01-19 11:45:03,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 97.0) internal successors, (5917), 61 states have internal predecessors, (5917), 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) [2022-01-19 11:45:03,485 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 97.0) internal successors, (5917), 61 states have internal predecessors, (5917), 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) [2022-01-19 11:45:03,485 INFO L186 Difference]: Start difference. First operand has 4086 places, 5079 transitions, 58746 flow. Second operand 60 states and 4830 transitions. [2022-01-19 11:45:03,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 4145 places, 5142 transitions, 65940 flow [2022-01-19 11:46:03,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 3317 places, 5142 transitions, 57964 flow, removed 2314 selfloop flow, removed 828 redundant places. [2022-01-19 11:46:03,697 INFO L242 Difference]: Finished difference. Result has 3321 places, 5126 transitions, 57849 flow [2022-01-19 11:46:03,704 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=50770, PETRI_DIFFERENCE_MINUEND_PLACES=3258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5079, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2606, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=57849, PETRI_PLACES=3321, PETRI_TRANSITIONS=5126} [2022-01-19 11:46:03,704 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 3237 predicate places. [2022-01-19 11:46:03,704 INFO L470 AbstractCegarLoop]: Abstraction has has 3321 places, 5126 transitions, 57849 flow [2022-01-19 11:46:03,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 81.04651162790698) internal successors, (3485), 43 states have internal predecessors, (3485), 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) [2022-01-19 11:46:03,705 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:46:03,705 INFO L254 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 11:46:03,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-19 11:46:03,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-19 11:46:03,920 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-19 11:46:03,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:46:03,920 INFO L85 PathProgramCache]: Analyzing trace with hash 712703486, now seen corresponding path program 8 times [2022-01-19 11:46:03,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:46:03,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606924353] [2022-01-19 11:46:03,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:46:03,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:46:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:46:04,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2710 backedges. 438 proven. 1170 refuted. 0 times theorem prover too weak. 1102 trivial. 0 not checked. [2022-01-19 11:46:04,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:46:04,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606924353] [2022-01-19 11:46:04,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606924353] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 11:46:04,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066600789] [2022-01-19 11:46:04,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 11:46:04,395 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 11:46:04,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 11:46:04,396 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 11:46:04,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-19 11:46:04,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 11:46:04,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 11:46:04,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-19 11:46:04,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 11:46:05,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2710 backedges. 438 proven. 1170 refuted. 0 times theorem prover too weak. 1102 trivial. 0 not checked. [2022-01-19 11:46:05,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 11:46:05,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2710 backedges. 438 proven. 1170 refuted. 0 times theorem prover too weak. 1102 trivial. 0 not checked. [2022-01-19 11:46:05,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066600789] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 11:46:05,750 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 11:46:05,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 43 [2022-01-19 11:46:05,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146239606] [2022-01-19 11:46:05,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 11:46:05,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-19 11:46:05,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:46:05,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-19 11:46:05,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2022-01-19 11:46:05,754 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 97 [2022-01-19 11:46:05,755 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3321 places, 5126 transitions, 57849 flow. Second operand has 43 states, 43 states have (on average 82.02325581395348) internal successors, (3527), 43 states have internal predecessors, (3527), 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) [2022-01-19 11:46:05,755 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:46:05,755 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 97 [2022-01-19 11:46:05,755 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:46:28,740 INFO L129 PetriNetUnfolder]: 4128/17234 cut-off events. [2022-01-19 11:46:28,740 INFO L130 PetriNetUnfolder]: For 20559052/20563383 co-relation queries the response was YES. [2022-01-19 11:46:29,770 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103252 conditions, 17234 events. 4128/17234 cut-off events. For 20559052/20563383 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 154015 event pairs, 164 based on Foata normal form. 151/17308 useless extension candidates. Maximal degree in co-relation 102388. Up to 1939 conditions per place. [2022-01-19 11:46:29,864 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 737 selfloop transitions, 3000 changer transitions 0/6460 dead transitions. [2022-01-19 11:46:29,865 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3380 places, 6460 transitions, 79631 flow [2022-01-19 11:46:29,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-19 11:46:29,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-01-19 11:46:29,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 4891 transitions. [2022-01-19 11:46:29,868 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8403780068728522 [2022-01-19 11:46:29,868 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 4891 transitions. [2022-01-19 11:46:29,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 4891 transitions. [2022-01-19 11:46:29,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:46:29,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 4891 transitions. [2022-01-19 11:46:29,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 81.51666666666667) internal successors, (4891), 60 states have internal predecessors, (4891), 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) [2022-01-19 11:46:29,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 97.0) internal successors, (5917), 61 states have internal predecessors, (5917), 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) [2022-01-19 11:46:29,878 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 97.0) internal successors, (5917), 61 states have internal predecessors, (5917), 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) [2022-01-19 11:46:29,878 INFO L186 Difference]: Start difference. First operand has 3321 places, 5126 transitions, 57849 flow. Second operand 60 states and 4891 transitions. [2022-01-19 11:46:29,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 3380 places, 6460 transitions, 79631 flow [2022-01-19 11:47:36,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 3232 places, 6460 transitions, 73237 flow, removed 513 selfloop flow, removed 148 redundant places. [2022-01-19 11:47:36,623 INFO L242 Difference]: Finished difference. Result has 3238 places, 5926 transitions, 65675 flow [2022-01-19 11:47:36,629 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=51455, PETRI_DIFFERENCE_MINUEND_PLACES=3173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2776, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=65675, PETRI_PLACES=3238, PETRI_TRANSITIONS=5926} [2022-01-19 11:47:36,630 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 3154 predicate places. [2022-01-19 11:47:36,630 INFO L470 AbstractCegarLoop]: Abstraction has has 3238 places, 5926 transitions, 65675 flow [2022-01-19 11:47:36,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 82.02325581395348) internal successors, (3527), 43 states have internal predecessors, (3527), 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) [2022-01-19 11:47:36,631 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:47:36,631 INFO L254 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 11:47:36,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-19 11:47:36,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 11:47:36,847 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-19 11:47:36,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:47:36,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1248089284, now seen corresponding path program 9 times [2022-01-19 11:47:36,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:47:36,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006924802] [2022-01-19 11:47:36,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:47:36,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:47:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:47:39,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 11:47:39,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:47:39,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006924802] [2022-01-19 11:47:39,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006924802] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 11:47:39,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291840902] [2022-01-19 11:47:39,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 11:47:39,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 11:47:39,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 11:47:39,059 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 11:47:39,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-19 11:47:39,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2022-01-19 11:47:39,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 11:47:39,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 165 conjunts are in the unsatisfiable core [2022-01-19 11:47:39,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 11:47:41,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 11:47:41,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 11:47:43,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 11:47:43,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291840902] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 11:47:43,340 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 11:47:43,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67, 67] total 69 [2022-01-19 11:47:43,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995213540] [2022-01-19 11:47:43,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 11:47:43,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-01-19 11:47:43,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:47:43,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-01-19 11:47:43,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=4555, Unknown=0, NotChecked=0, Total=4692 [2022-01-19 11:47:43,345 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 97 [2022-01-19 11:47:43,348 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3238 places, 5926 transitions, 65675 flow. Second operand has 69 states, 69 states have (on average 76.34782608695652) internal successors, (5268), 69 states have internal predecessors, (5268), 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) [2022-01-19 11:47:43,348 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:47:43,348 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 97 [2022-01-19 11:47:43,348 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:48:01,363 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([182] L1350-->L1351: Formula: (= v_~myglobal~0_3 (+ v_~myglobal~0_4 1)) InVars {~myglobal~0=v_~myglobal~0_4} OutVars{~myglobal~0=v_~myglobal~0_3} AuxVars[] AssignedVars[~myglobal~0][2917], [Black: 1404#(<= |ULTIMATE.start_main_~i~1#1| 3), Black: 1939#(< |ULTIMATE.start_main_~i~1#1| 18), Black: 1913#(< |ULTIMATE.start_main_~i~1#1| 19), Black: 1396#true, Black: 102#(= |ULTIMATE.start_main_~i~1#1| 0), 3667#(<= thread_function_mutexThread1of1ForFork0_~i~0 1), Black: 272#(<= thread_function_mutexThread1of1ForFork0_~i~0 0), Black: 19785#(< thread_function_mutexThread1of1ForFork0_~i~0 17), Black: 18438#(<= thread_function_mutexThread1of1ForFork0_~i~0 15), Black: 18406#true, Black: 19750#(< thread_function_mutexThread1of1ForFork0_~i~0 18), Black: 19704#(< thread_function_mutexThread1of1ForFork0_~i~0 20), Black: 19715#(< thread_function_mutexThread1of1ForFork0_~i~0 19), 8020#(<= thread_function_mutexThread1of1ForFork0_~i~0 1), 1902#(< |ULTIMATE.start_main_~i~1#1| 20), 1126#(< |ULTIMATE.start_main_~i~1#1| 20), Black: 308#true, Black: 621#(< thread_function_mutexThread1of1ForFork0_~i~0 20), 97#true, 18410#(<= thread_function_mutexThread1of1ForFork0_~i~0 1), 23530#(and (<= thread_function_mutexThread1of1ForFork0_~j~0 20) (<= 21 ~myglobal~0) (<= ~myglobal~0 21) (<= 20 thread_function_mutexThread1of1ForFork0_~j~0)), Black: 7124#(and (< thread_function_mutexThread1of1ForFork0_~i~0 19) (< |thread_function_mutexThread1of1ForFork0_#t~post31| 19) (<= |ULTIMATE.start_main_~i~1#1| 15)), Black: 5931#(and (< thread_function_mutexThread1of1ForFork0_~i~0 19) (<= |ULTIMATE.start_main_#t~post40#1| 5) (<= |ULTIMATE.start_main_~i~1#1| 6)), Black: 6743#(and (<= |ULTIMATE.start_main_~i~1#1| 11) (< thread_function_mutexThread1of1ForFork0_~i~0 19) (<= |ULTIMATE.start_main_#t~post40#1| 10)), Black: 4643#(and (<= 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thread_function_mutexThread1of1ForFork0_~i~0 19)), Black: 14344#(and (<= |ULTIMATE.start_main_~i~1#1| 10) (< thread_function_mutexThread1of1ForFork0_~i~0 17) (<= |ULTIMATE.start_main_#t~post40#1| 9)), Black: 14999#(and (< thread_function_mutexThread1of1ForFork0_~i~0 16) (<= |ULTIMATE.start_main_~i~1#1| 14) (<= |ULTIMATE.start_main_#t~post40#1| 14)), 87#L1330true, Black: 16170#(<= |ULTIMATE.start_main_~i~1#1| 17), Black: 16134#true, Black: 17807#(< |ULTIMATE.start_main_~i~1#1| 19)]) [2022-01-19 11:48:01,366 INFO L384 tUnfolder$Statistics]: this new event has 226 ancestors and is cut-off event [2022-01-19 11:48:01,366 INFO L387 tUnfolder$Statistics]: existing Event has 226 ancestors and is cut-off event [2022-01-19 11:48:01,366 INFO L387 tUnfolder$Statistics]: existing Event has 218 ancestors and is cut-off event [2022-01-19 11:48:01,367 INFO L387 tUnfolder$Statistics]: existing Event has 218 ancestors and is cut-off event Received shutdown request... [2022-01-19 11:50:30,037 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 11:50:30,038 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 11:50:31,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-19 11:50:31,115 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 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown