/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-Before.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-lit/fkp2013_variant-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 05:01:44,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 05:01:44,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 05:01:44,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 05:01:44,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 05:01:44,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 05:01:44,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 05:01:44,932 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 05:01:44,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 05:01:44,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 05:01:44,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 05:01:44,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 05:01:44,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 05:01:44,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 05:01:44,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 05:01:44,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 05:01:44,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 05:01:44,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 05:01:44,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 05:01:44,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 05:01:44,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 05:01:44,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 05:01:44,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 05:01:44,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 05:01:44,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-19 05:01:44,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 05:01:44,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 05:01:44,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 05:01:44,986 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-Before.epf [2022-01-19 05:01:45,019 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 05:01:45,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 05:01:45,020 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 05:01:45,020 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 05:01:45,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 05:01:45,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 05:01:45,021 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 05:01:45,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 05:01:45,021 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 05:01:45,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 05:01:45,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 05:01:45,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 05:01:45,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 05:01:45,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 05:01:45,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 05:01:45,022 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 05:01:45,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 05:01:45,022 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 05:01:45,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 05:01:45,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 05:01:45,023 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 05:01:45,023 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 05:01:45,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 05:01:45,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 05:01:45,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 05:01:45,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 05:01:45,023 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 05:01:45,024 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 05:01:45,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 05:01:45,024 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 05:01:45,024 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 05:01:45,024 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 05:01:45,024 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 05:01:45,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 05:01:45,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 05:01:45,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 05:01:45,238 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 05:01:45,239 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 05:01:45,240 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/fkp2013_variant-1.i [2022-01-19 05:01:45,297 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/929745621/ea0f6bded4bf4bb3b1afeeaa23949626/FLAG2da0e8713 [2022-01-19 05:01:45,710 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 05:01:45,710 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2013_variant-1.i [2022-01-19 05:01:45,723 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/929745621/ea0f6bded4bf4bb3b1afeeaa23949626/FLAG2da0e8713 [2022-01-19 05:01:45,733 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/929745621/ea0f6bded4bf4bb3b1afeeaa23949626 [2022-01-19 05:01:45,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 05:01:45,736 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 05:01:45,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 05:01:45,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 05:01:45,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 05:01:45,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 05:01:45" (1/1) ... [2022-01-19 05:01:45,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62ae4cac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:01:45, skipping insertion in model container [2022-01-19 05:01:45,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 05:01:45" (1/1) ... [2022-01-19 05:01:45,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 05:01:45,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 05:01:46,054 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-lit/fkp2013_variant-1.i[30003,30016] [2022-01-19 05:01:46,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 05:01:46,085 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 05:01:46,129 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-lit/fkp2013_variant-1.i[30003,30016] [2022-01-19 05:01:46,132 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 05:01:46,173 INFO L208 MainTranslator]: Completed translation [2022-01-19 05:01:46,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:01:46 WrapperNode [2022-01-19 05:01:46,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 05:01:46,176 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 05:01:46,176 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 05:01:46,176 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 05:01:46,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:01:46" (1/1) ... [2022-01-19 05:01:46,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:01:46" (1/1) ... [2022-01-19 05:01:46,227 INFO L137 Inliner]: procedures = 172, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2022-01-19 05:01:46,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 05:01:46,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 05:01:46,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 05:01:46,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 05:01:46,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:01:46" (1/1) ... [2022-01-19 05:01:46,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:01:46" (1/1) ... [2022-01-19 05:01:46,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:01:46" (1/1) ... [2022-01-19 05:01:46,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:01:46" (1/1) ... [2022-01-19 05:01:46,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:01:46" (1/1) ... [2022-01-19 05:01:46,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:01:46" (1/1) ... [2022-01-19 05:01:46,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:01:46" (1/1) ... [2022-01-19 05:01:46,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 05:01:46,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 05:01:46,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 05:01:46,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 05:01:46,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:01:46" (1/1) ... [2022-01-19 05:01:46,278 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 05:01:46,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 05:01:46,296 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 05:01:46,298 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 05:01:46,330 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-01-19 05:01:46,330 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-01-19 05:01:46,331 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-01-19 05:01:46,331 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-01-19 05:01:46,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 05:01:46,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 05:01:46,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 05:01:46,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 05:01:46,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 05:01:46,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 05:01:46,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 05:01:46,334 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 05:01:46,422 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 05:01:46,424 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 05:01:46,573 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 05:01:46,579 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 05:01:46,580 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-19 05:01:46,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 05:01:46 BoogieIcfgContainer [2022-01-19 05:01:46,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 05:01:46,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 05:01:46,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 05:01:46,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 05:01:46,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 05:01:45" (1/3) ... [2022-01-19 05:01:46,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b61c9e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 05:01:46, skipping insertion in model container [2022-01-19 05:01:46,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:01:46" (2/3) ... [2022-01-19 05:01:46,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b61c9e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 05:01:46, skipping insertion in model container [2022-01-19 05:01:46,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 05:01:46" (3/3) ... [2022-01-19 05:01:46,588 INFO L111 eAbstractionObserver]: Analyzing ICFG fkp2013_variant-1.i [2022-01-19 05:01:46,592 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 05:01:46,592 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 05:01:46,592 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 05:01:46,625 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,625 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,625 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,625 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,626 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,626 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,626 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,626 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,626 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,626 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,627 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,627 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,627 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,627 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,628 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,628 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,628 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,628 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,629 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,629 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,629 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,629 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,629 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,630 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,630 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,630 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,630 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,630 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,631 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,631 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,631 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,631 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,631 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,632 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,632 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,632 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,632 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,633 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,633 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,633 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,633 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,634 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,637 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,637 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,638 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,638 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,638 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,640 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,640 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,640 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,641 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,641 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,641 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:46,641 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-19 05:01:46,705 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 05:01:46,714 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 05:01:46,715 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-19 05:01:46,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 80 transitions, 170 flow [2022-01-19 05:01:46,776 INFO L129 PetriNetUnfolder]: 4/93 cut-off events. [2022-01-19 05:01:46,776 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 05:01:46,780 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 93 events. 4/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 106 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 4 conditions per place. [2022-01-19 05:01:46,780 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 80 transitions, 170 flow [2022-01-19 05:01:46,789 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 79 transitions, 166 flow [2022-01-19 05:01:46,803 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2022-01-19 05:01:46,803 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 05:01:46,803 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:01:46,804 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] [2022-01-19 05:01:46,804 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 05:01:46,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:01:46,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1926868283, now seen corresponding path program 1 times [2022-01-19 05:01:46,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:01:46,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344816786] [2022-01-19 05:01:46,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:01:46,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:01:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:01:47,309 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 05:01:47,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:01:47,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344816786] [2022-01-19 05:01:47,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344816786] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:01:47,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:01:47,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 05:01:47,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227433019] [2022-01-19 05:01:47,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:01:47,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 05:01:47,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:01:47,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 05:01:47,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-19 05:01:47,368 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 80 [2022-01-19 05:01:47,375 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 79 transitions, 166 flow. Second operand has 9 states, 9 states have (on average 57.44444444444444) internal successors, (517), 9 states have internal predecessors, (517), 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 05:01:47,375 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:01:47,376 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 80 [2022-01-19 05:01:47,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:01:47,667 INFO L129 PetriNetUnfolder]: 71/288 cut-off events. [2022-01-19 05:01:47,668 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-01-19 05:01:47,671 INFO L84 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 288 events. 71/288 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1479 event pairs, 5 based on Foata normal form. 4/255 useless extension candidates. Maximal degree in co-relation 409. Up to 38 conditions per place. [2022-01-19 05:01:47,676 INFO L132 encePairwiseOnDemand]: 68/80 looper letters, 15 selfloop transitions, 5 changer transitions 28/100 dead transitions. [2022-01-19 05:01:47,681 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 100 transitions, 304 flow [2022-01-19 05:01:47,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 05:01:47,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 05:01:47,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 672 transitions. [2022-01-19 05:01:47,703 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7636363636363637 [2022-01-19 05:01:47,704 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 672 transitions. [2022-01-19 05:01:47,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 672 transitions. [2022-01-19 05:01:47,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:01:47,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 672 transitions. [2022-01-19 05:01:47,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 61.09090909090909) internal successors, (672), 11 states have internal predecessors, (672), 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 05:01:47,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 80.0) internal successors, (960), 12 states have internal predecessors, (960), 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 05:01:47,729 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 80.0) internal successors, (960), 12 states have internal predecessors, (960), 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 05:01:47,731 INFO L186 Difference]: Start difference. First operand has 82 places, 79 transitions, 166 flow. Second operand 11 states and 672 transitions. [2022-01-19 05:01:47,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 100 transitions, 304 flow [2022-01-19 05:01:47,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 100 transitions, 303 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 05:01:47,741 INFO L242 Difference]: Finished difference. Result has 95 places, 70 transitions, 169 flow [2022-01-19 05:01:47,742 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=169, PETRI_PLACES=95, PETRI_TRANSITIONS=70} [2022-01-19 05:01:47,746 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 13 predicate places. [2022-01-19 05:01:47,747 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 70 transitions, 169 flow [2022-01-19 05:01:47,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 57.44444444444444) internal successors, (517), 9 states have internal predecessors, (517), 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 05:01:47,748 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:01:47,748 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] [2022-01-19 05:01:47,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 05:01:47,749 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 05:01:47,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:01:47,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1015912410, now seen corresponding path program 1 times [2022-01-19 05:01:47,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:01:47,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892786397] [2022-01-19 05:01:47,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:01:47,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:01:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:01:47,911 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 05:01:47,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:01:47,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892786397] [2022-01-19 05:01:47,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892786397] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:01:47,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:01:47,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 05:01:47,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102939017] [2022-01-19 05:01:47,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:01:47,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 05:01:47,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:01:47,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 05:01:47,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-01-19 05:01:47,915 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2022-01-19 05:01:47,916 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 70 transitions, 169 flow. Second operand has 9 states, 9 states have (on average 56.0) internal successors, (504), 9 states have internal predecessors, (504), 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 05:01:47,916 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:01:47,916 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2022-01-19 05:01:47,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:01:48,049 INFO L129 PetriNetUnfolder]: 24/170 cut-off events. [2022-01-19 05:01:48,050 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-01-19 05:01:48,050 INFO L84 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 170 events. 24/170 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 556 event pairs, 1 based on Foata normal form. 5/167 useless extension candidates. Maximal degree in co-relation 277. Up to 18 conditions per place. [2022-01-19 05:01:48,051 INFO L132 encePairwiseOnDemand]: 69/80 looper letters, 0 selfloop transitions, 0 changer transitions 89/89 dead transitions. [2022-01-19 05:01:48,051 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 89 transitions, 288 flow [2022-01-19 05:01:48,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-19 05:01:48,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-19 05:01:48,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 690 transitions. [2022-01-19 05:01:48,053 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.71875 [2022-01-19 05:01:48,053 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 690 transitions. [2022-01-19 05:01:48,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 690 transitions. [2022-01-19 05:01:48,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:01:48,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 690 transitions. [2022-01-19 05:01:48,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 57.5) internal successors, (690), 12 states have internal predecessors, (690), 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 05:01:48,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 80.0) internal successors, (1040), 13 states have internal predecessors, (1040), 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 05:01:48,058 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 80.0) internal successors, (1040), 13 states have internal predecessors, (1040), 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 05:01:48,058 INFO L186 Difference]: Start difference. First operand has 95 places, 70 transitions, 169 flow. Second operand 12 states and 690 transitions. [2022-01-19 05:01:48,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 89 transitions, 288 flow [2022-01-19 05:01:48,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 89 transitions, 272 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-01-19 05:01:48,060 INFO L242 Difference]: Finished difference. Result has 87 places, 0 transitions, 0 flow [2022-01-19 05:01:48,061 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=87, PETRI_TRANSITIONS=0} [2022-01-19 05:01:48,061 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 5 predicate places. [2022-01-19 05:01:48,061 INFO L470 AbstractCegarLoop]: Abstraction has has 87 places, 0 transitions, 0 flow [2022-01-19 05:01:48,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 56.0) internal successors, (504), 9 states have internal predecessors, (504), 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 05:01:48,065 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-01-19 05:01:48,065 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-01-19 05:01:48,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 05:01:48,068 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-19 05:01:48,069 INFO L309 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE (1/2) [2022-01-19 05:01:48,073 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2022-01-19 05:01:48,074 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 05:01:48,074 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-19 05:01:48,076 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 80 transitions, 170 flow [2022-01-19 05:01:48,082 INFO L129 PetriNetUnfolder]: 4/93 cut-off events. [2022-01-19 05:01:48,083 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 05:01:48,083 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 93 events. 4/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 106 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 4 conditions per place. [2022-01-19 05:01:48,083 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 80 transitions, 170 flow [2022-01-19 05:01:48,084 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 79 transitions, 166 flow [2022-01-19 05:01:48,092 INFO L129 PetriNetUnfolder]: 4/87 cut-off events. [2022-01-19 05:01:48,092 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 05:01:48,092 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:01:48,092 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:48,093 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATION === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-19 05:01:48,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:01:48,093 INFO L85 PathProgramCache]: Analyzing trace with hash -2080092778, now seen corresponding path program 1 times [2022-01-19 05:01:48,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:01:48,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055860137] [2022-01-19 05:01:48,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:01:48,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:01:48,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-19 05:01:48,113 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-19 05:01:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-19 05:01:48,148 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-19 05:01:48,148 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-19 05:01:48,148 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 2 remaining) [2022-01-19 05:01:48,148 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-01-19 05:01:48,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 05:01:48,149 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-19 05:01:48,149 INFO L309 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (2/2) [2022-01-19 05:01:48,150 WARN L235 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-19 05:01:48,150 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-01-19 05:01:48,164 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,164 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,164 WARN L322 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,164 WARN L322 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,165 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,165 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,165 WARN L322 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,165 WARN L322 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,165 WARN L322 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,165 WARN L322 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,166 WARN L322 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,166 WARN L322 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,166 WARN L322 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,166 WARN L322 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,166 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,166 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,167 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,167 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,167 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,167 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,167 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,167 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,167 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,168 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,168 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,168 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,168 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,168 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,168 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,168 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,169 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,169 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,169 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,169 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,169 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,169 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,170 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,170 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,170 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,170 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,170 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,170 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,170 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,170 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,171 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,171 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,171 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,171 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,171 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,171 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,171 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,172 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,172 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,172 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,172 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,172 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,172 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,173 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,173 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,173 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,173 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,173 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,173 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,173 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,174 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,174 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,174 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,174 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,174 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,174 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,174 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,175 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,175 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,175 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,175 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,175 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,175 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,175 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,176 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,176 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,176 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,176 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,176 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,176 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,177 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,177 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,177 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,177 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,177 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,178 WARN L322 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,178 WARN L322 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,178 WARN L322 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,178 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,179 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,179 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,179 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,179 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,180 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,180 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,180 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,181 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,181 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,181 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,181 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,181 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,181 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:01:48,182 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-19 05:01:48,183 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 05:01:48,184 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 05:01:48,184 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-19 05:01:48,186 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 107 places, 101 transitions, 226 flow [2022-01-19 05:01:48,197 INFO L129 PetriNetUnfolder]: 5/119 cut-off events. [2022-01-19 05:01:48,197 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 05:01:48,198 INFO L84 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 119 events. 5/119 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 147 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 128. Up to 6 conditions per place. [2022-01-19 05:01:48,198 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 101 transitions, 226 flow [2022-01-19 05:01:48,199 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 86 transitions, 187 flow [2022-01-19 05:01:48,204 INFO L129 PetriNetUnfolder]: 3/58 cut-off events. [2022-01-19 05:01:48,205 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 05:01:48,205 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:01:48,205 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] [2022-01-19 05:01:48,205 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 05:01:48,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:01:48,206 INFO L85 PathProgramCache]: Analyzing trace with hash 51703260, now seen corresponding path program 1 times [2022-01-19 05:01:48,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:01:48,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761998727] [2022-01-19 05:01:48,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:01:48,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:01:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:01:48,378 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 05:01:48,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:01:48,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761998727] [2022-01-19 05:01:48,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761998727] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:01:48,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:01:48,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 05:01:48,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33759428] [2022-01-19 05:01:48,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:01:48,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 05:01:48,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:01:48,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 05:01:48,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-19 05:01:48,387 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 101 [2022-01-19 05:01:48,388 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 86 transitions, 187 flow. Second operand has 9 states, 9 states have (on average 71.44444444444444) internal successors, (643), 9 states have internal predecessors, (643), 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 05:01:48,388 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:01:48,388 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 101 [2022-01-19 05:01:48,388 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:01:48,679 INFO L129 PetriNetUnfolder]: 429/1137 cut-off events. [2022-01-19 05:01:48,679 INFO L130 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2022-01-19 05:01:48,684 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1939 conditions, 1137 events. 429/1137 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8608 event pairs, 24 based on Foata normal form. 19/1036 useless extension candidates. Maximal degree in co-relation 1887. Up to 213 conditions per place. [2022-01-19 05:01:48,687 INFO L132 encePairwiseOnDemand]: 88/101 looper letters, 22 selfloop transitions, 6 changer transitions 49/133 dead transitions. [2022-01-19 05:01:48,687 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 133 transitions, 465 flow [2022-01-19 05:01:48,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 05:01:48,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 05:01:48,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 855 transitions. [2022-01-19 05:01:48,690 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7695769576957696 [2022-01-19 05:01:48,690 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 855 transitions. [2022-01-19 05:01:48,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 855 transitions. [2022-01-19 05:01:48,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:01:48,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 855 transitions. [2022-01-19 05:01:48,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 77.72727272727273) internal successors, (855), 11 states have internal predecessors, (855), 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 05:01:48,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 101.0) internal successors, (1212), 12 states have internal predecessors, (1212), 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 05:01:48,718 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 101.0) internal successors, (1212), 12 states have internal predecessors, (1212), 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 05:01:48,718 INFO L186 Difference]: Start difference. First operand has 91 places, 86 transitions, 187 flow. Second operand 11 states and 855 transitions. [2022-01-19 05:01:48,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 133 transitions, 465 flow [2022-01-19 05:01:48,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 133 transitions, 462 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-01-19 05:01:48,723 INFO L242 Difference]: Finished difference. Result has 104 places, 79 transitions, 207 flow [2022-01-19 05:01:48,723 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=207, PETRI_PLACES=104, PETRI_TRANSITIONS=79} [2022-01-19 05:01:48,725 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 13 predicate places. [2022-01-19 05:01:48,725 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 79 transitions, 207 flow [2022-01-19 05:01:48,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 71.44444444444444) internal successors, (643), 9 states have internal predecessors, (643), 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 05:01:48,725 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:01:48,726 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] [2022-01-19 05:01:48,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 05:01:48,726 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 05:01:48,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:01:48,727 INFO L85 PathProgramCache]: Analyzing trace with hash -492590774, now seen corresponding path program 1 times [2022-01-19 05:01:48,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:01:48,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178978904] [2022-01-19 05:01:48,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:01:48,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:01:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:01:48,869 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 05:01:48,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:01:48,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178978904] [2022-01-19 05:01:48,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178978904] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:01:48,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:01:48,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 05:01:48,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87261721] [2022-01-19 05:01:48,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:01:48,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 05:01:48,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:01:48,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 05:01:48,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-01-19 05:01:48,872 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 101 [2022-01-19 05:01:48,873 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 79 transitions, 207 flow. Second operand has 9 states, 9 states have (on average 70.0) internal successors, (630), 9 states have internal predecessors, (630), 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 05:01:48,873 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:01:48,873 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 101 [2022-01-19 05:01:48,873 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:01:49,164 INFO L129 PetriNetUnfolder]: 366/1099 cut-off events. [2022-01-19 05:01:49,165 INFO L130 PetriNetUnfolder]: For 459/459 co-relation queries the response was YES. [2022-01-19 05:01:49,168 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2347 conditions, 1099 events. 366/1099 cut-off events. For 459/459 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7409 event pairs, 59 based on Foata normal form. 25/1059 useless extension candidates. Maximal degree in co-relation 2289. Up to 246 conditions per place. [2022-01-19 05:01:49,173 INFO L132 encePairwiseOnDemand]: 89/101 looper letters, 50 selfloop transitions, 15 changer transitions 28/146 dead transitions. [2022-01-19 05:01:49,174 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 146 transitions, 599 flow [2022-01-19 05:01:49,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-19 05:01:49,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-01-19 05:01:49,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1115 transitions. [2022-01-19 05:01:49,177 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.735973597359736 [2022-01-19 05:01:49,177 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1115 transitions. [2022-01-19 05:01:49,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1115 transitions. [2022-01-19 05:01:49,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:01:49,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1115 transitions. [2022-01-19 05:01:49,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 74.33333333333333) internal successors, (1115), 15 states have internal predecessors, (1115), 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 05:01:49,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 101.0) internal successors, (1616), 16 states have internal predecessors, (1616), 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 05:01:49,182 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 101.0) internal successors, (1616), 16 states have internal predecessors, (1616), 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 05:01:49,182 INFO L186 Difference]: Start difference. First operand has 104 places, 79 transitions, 207 flow. Second operand 15 states and 1115 transitions. [2022-01-19 05:01:49,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 146 transitions, 599 flow [2022-01-19 05:01:49,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 146 transitions, 566 flow, removed 11 selfloop flow, removed 6 redundant places. [2022-01-19 05:01:49,190 INFO L242 Difference]: Finished difference. Result has 111 places, 87 transitions, 283 flow [2022-01-19 05:01:49,190 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=283, PETRI_PLACES=111, PETRI_TRANSITIONS=87} [2022-01-19 05:01:49,191 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 20 predicate places. [2022-01-19 05:01:49,191 INFO L470 AbstractCegarLoop]: Abstraction has has 111 places, 87 transitions, 283 flow [2022-01-19 05:01:49,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 70.0) internal successors, (630), 9 states have internal predecessors, (630), 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 05:01:49,191 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:01:49,191 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:49,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 05:01:49,192 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 05:01:49,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:01:49,192 INFO L85 PathProgramCache]: Analyzing trace with hash -219118478, now seen corresponding path program 1 times [2022-01-19 05:01:49,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:01:49,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501045448] [2022-01-19 05:01:49,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:01:49,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:01:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:01:49,296 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:01:49,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:01:49,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501045448] [2022-01-19 05:01:49,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501045448] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 05:01:49,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031448637] [2022-01-19 05:01:49,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:01:49,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:01:49,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 05:01:49,303 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 05:01:49,330 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 05:01:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:01:49,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-19 05:01:49,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 05:01:49,778 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:01:49,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 05:01:49,962 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:01:49,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031448637] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 05:01:49,963 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 05:01:49,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 25 [2022-01-19 05:01:49,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446312076] [2022-01-19 05:01:49,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 05:01:49,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-19 05:01:49,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:01:49,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-19 05:01:49,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2022-01-19 05:01:49,967 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 101 [2022-01-19 05:01:49,969 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 87 transitions, 283 flow. Second operand has 25 states, 25 states have (on average 69.32) internal successors, (1733), 25 states have internal predecessors, (1733), 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 05:01:49,969 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:01:49,969 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 101 [2022-01-19 05:01:49,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:01:50,787 INFO L129 PetriNetUnfolder]: 281/909 cut-off events. [2022-01-19 05:01:50,788 INFO L130 PetriNetUnfolder]: For 1155/1155 co-relation queries the response was YES. [2022-01-19 05:01:50,791 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2307 conditions, 909 events. 281/909 cut-off events. For 1155/1155 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6063 event pairs, 36 based on Foata normal form. 37/946 useless extension candidates. Maximal degree in co-relation 2242. Up to 134 conditions per place. [2022-01-19 05:01:50,794 INFO L132 encePairwiseOnDemand]: 86/101 looper letters, 48 selfloop transitions, 28 changer transitions 69/197 dead transitions. [2022-01-19 05:01:50,794 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 197 transitions, 1080 flow [2022-01-19 05:01:50,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-19 05:01:50,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-01-19 05:01:50,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1815 transitions. [2022-01-19 05:01:50,799 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7188118811881188 [2022-01-19 05:01:50,799 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1815 transitions. [2022-01-19 05:01:50,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1815 transitions. [2022-01-19 05:01:50,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:01:50,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1815 transitions. [2022-01-19 05:01:50,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 72.6) internal successors, (1815), 25 states have internal predecessors, (1815), 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 05:01:50,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 101.0) internal successors, (2626), 26 states have internal predecessors, (2626), 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 05:01:50,810 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 101.0) internal successors, (2626), 26 states have internal predecessors, (2626), 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 05:01:50,810 INFO L186 Difference]: Start difference. First operand has 111 places, 87 transitions, 283 flow. Second operand 25 states and 1815 transitions. [2022-01-19 05:01:50,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 197 transitions, 1080 flow [2022-01-19 05:01:50,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 197 transitions, 997 flow, removed 32 selfloop flow, removed 7 redundant places. [2022-01-19 05:01:50,819 INFO L242 Difference]: Finished difference. Result has 137 places, 104 transitions, 417 flow [2022-01-19 05:01:50,820 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=417, PETRI_PLACES=137, PETRI_TRANSITIONS=104} [2022-01-19 05:01:50,820 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 46 predicate places. [2022-01-19 05:01:50,821 INFO L470 AbstractCegarLoop]: Abstraction has has 137 places, 104 transitions, 417 flow [2022-01-19 05:01:50,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 69.32) internal successors, (1733), 25 states have internal predecessors, (1733), 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 05:01:50,821 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:01:50,822 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:50,850 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 05:01:51,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-19 05:01:51,036 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 05:01:51,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:01:51,036 INFO L85 PathProgramCache]: Analyzing trace with hash -923380286, now seen corresponding path program 1 times [2022-01-19 05:01:51,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:01:51,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615297675] [2022-01-19 05:01:51,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:01:51,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:01:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:01:51,181 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:01:51,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:01:51,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615297675] [2022-01-19 05:01:51,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615297675] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 05:01:51,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549856110] [2022-01-19 05:01:51,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:01:51,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:01:51,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 05:01:51,184 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 05:01:51,216 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 05:01:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:01:51,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-19 05:01:51,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 05:01:51,626 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:01:51,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 05:01:51,832 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:01:51,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549856110] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 05:01:51,833 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 05:01:51,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2022-01-19 05:01:51,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690585591] [2022-01-19 05:01:51,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 05:01:51,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-19 05:01:51,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:01:51,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-19 05:01:51,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2022-01-19 05:01:51,837 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 101 [2022-01-19 05:01:51,839 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 104 transitions, 417 flow. Second operand has 29 states, 29 states have (on average 68.10344827586206) internal successors, (1975), 29 states have internal predecessors, (1975), 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 05:01:51,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:01:51,839 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 101 [2022-01-19 05:01:51,840 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:01:53,900 INFO L129 PetriNetUnfolder]: 304/1312 cut-off events. [2022-01-19 05:01:53,900 INFO L130 PetriNetUnfolder]: For 2061/2065 co-relation queries the response was YES. [2022-01-19 05:01:53,905 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3480 conditions, 1312 events. 304/1312 cut-off events. For 2061/2065 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 10194 event pairs, 57 based on Foata normal form. 18/1330 useless extension candidates. Maximal degree in co-relation 3406. Up to 141 conditions per place. [2022-01-19 05:01:53,910 INFO L132 encePairwiseOnDemand]: 85/101 looper letters, 95 selfloop transitions, 50 changer transitions 121/317 dead transitions. [2022-01-19 05:01:53,910 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 317 transitions, 2258 flow [2022-01-19 05:01:53,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-19 05:01:53,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2022-01-19 05:01:53,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 4881 transitions. [2022-01-19 05:01:53,921 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6903818953323904 [2022-01-19 05:01:53,922 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 4881 transitions. [2022-01-19 05:01:53,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 4881 transitions. [2022-01-19 05:01:53,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:01:53,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 4881 transitions. [2022-01-19 05:01:53,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 69.72857142857143) internal successors, (4881), 70 states have internal predecessors, (4881), 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 05:01:53,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 101.0) internal successors, (7171), 71 states have internal predecessors, (7171), 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 05:01:53,944 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 101.0) internal successors, (7171), 71 states have internal predecessors, (7171), 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 05:01:53,944 INFO L186 Difference]: Start difference. First operand has 137 places, 104 transitions, 417 flow. Second operand 70 states and 4881 transitions. [2022-01-19 05:01:53,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 317 transitions, 2258 flow [2022-01-19 05:01:53,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 317 transitions, 2035 flow, removed 99 selfloop flow, removed 13 redundant places. [2022-01-19 05:01:53,959 INFO L242 Difference]: Finished difference. Result has 223 places, 138 transitions, 789 flow [2022-01-19 05:01:53,960 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=789, PETRI_PLACES=223, PETRI_TRANSITIONS=138} [2022-01-19 05:01:53,960 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 132 predicate places. [2022-01-19 05:01:53,960 INFO L470 AbstractCegarLoop]: Abstraction has has 223 places, 138 transitions, 789 flow [2022-01-19 05:01:53,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 68.10344827586206) internal successors, (1975), 29 states have internal predecessors, (1975), 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 05:01:53,961 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:01:53,962 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:53,987 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 05:01:54,175 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,SelfDestructingSolverStorable6 [2022-01-19 05:01:54,176 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 05:01:54,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:01:54,176 INFO L85 PathProgramCache]: Analyzing trace with hash -880466720, now seen corresponding path program 2 times [2022-01-19 05:01:54,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:01:54,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916065073] [2022-01-19 05:01:54,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:01:54,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:01:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:01:54,303 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:01:54,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:01:54,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916065073] [2022-01-19 05:01:54,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916065073] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 05:01:54,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545559978] [2022-01-19 05:01:54,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 05:01:54,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:01:54,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 05:01:54,305 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 05:01:54,305 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 05:01:54,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 05:01:54,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 05:01:54,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-19 05:01:54,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 05:01:54,746 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:01:54,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 05:01:54,958 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:01:54,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545559978] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 05:01:54,958 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 05:01:54,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2022-01-19 05:01:54,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948799591] [2022-01-19 05:01:54,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 05:01:54,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-19 05:01:54,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:01:54,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-19 05:01:54,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=727, Unknown=0, NotChecked=0, Total=812 [2022-01-19 05:01:54,961 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 101 [2022-01-19 05:01:54,963 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 138 transitions, 789 flow. Second operand has 29 states, 29 states have (on average 68.10344827586206) internal successors, (1975), 29 states have internal predecessors, (1975), 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 05:01:54,963 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:01:54,963 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 101 [2022-01-19 05:01:54,963 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:01:57,309 INFO L129 PetriNetUnfolder]: 400/1774 cut-off events. [2022-01-19 05:01:57,310 INFO L130 PetriNetUnfolder]: For 9470/9470 co-relation queries the response was YES. [2022-01-19 05:01:57,322 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6305 conditions, 1774 events. 400/1774 cut-off events. For 9470/9470 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 15417 event pairs, 81 based on Foata normal form. 16/1787 useless extension candidates. Maximal degree in co-relation 6232. Up to 214 conditions per place. [2022-01-19 05:01:57,329 INFO L132 encePairwiseOnDemand]: 85/101 looper letters, 133 selfloop transitions, 77 changer transitions 145/406 dead transitions. [2022-01-19 05:01:57,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 406 transitions, 4062 flow [2022-01-19 05:01:57,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-19 05:01:57,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2022-01-19 05:01:57,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 6407 transitions. [2022-01-19 05:01:57,338 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6895178648299612 [2022-01-19 05:01:57,338 INFO L72 ComplementDD]: Start complementDD. Operand 92 states and 6407 transitions. [2022-01-19 05:01:57,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 92 states and 6407 transitions. [2022-01-19 05:01:57,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:01:57,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 92 states and 6407 transitions. [2022-01-19 05:01:57,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 93 states, 92 states have (on average 69.6413043478261) internal successors, (6407), 92 states have internal predecessors, (6407), 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 05:01:57,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 93 states, 93 states have (on average 101.0) internal successors, (9393), 93 states have internal predecessors, (9393), 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 05:01:57,365 INFO L81 ComplementDD]: Finished complementDD. Result has 93 states, 93 states have (on average 101.0) internal successors, (9393), 93 states have internal predecessors, (9393), 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 05:01:57,365 INFO L186 Difference]: Start difference. First operand has 223 places, 138 transitions, 789 flow. Second operand 92 states and 6407 transitions. [2022-01-19 05:01:57,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 406 transitions, 4062 flow [2022-01-19 05:01:57,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 406 transitions, 3146 flow, removed 449 selfloop flow, removed 36 redundant places. [2022-01-19 05:01:57,408 INFO L242 Difference]: Finished difference. Result has 287 places, 176 transitions, 1278 flow [2022-01-19 05:01:57,408 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=92, PETRI_FLOW=1278, PETRI_PLACES=287, PETRI_TRANSITIONS=176} [2022-01-19 05:01:57,409 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 196 predicate places. [2022-01-19 05:01:57,409 INFO L470 AbstractCegarLoop]: Abstraction has has 287 places, 176 transitions, 1278 flow [2022-01-19 05:01:57,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 68.10344827586206) internal successors, (1975), 29 states have internal predecessors, (1975), 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 05:01:57,410 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:01:57,410 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:57,435 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 05:01:57,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:01:57,625 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 05:01:57,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:01:57,625 INFO L85 PathProgramCache]: Analyzing trace with hash 898788464, now seen corresponding path program 3 times [2022-01-19 05:01:57,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:01:57,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474800772] [2022-01-19 05:01:57,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:01:57,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:01:57,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:01:57,728 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:01:57,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:01:57,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474800772] [2022-01-19 05:01:57,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474800772] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 05:01:57,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142261460] [2022-01-19 05:01:57,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 05:01:57,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:01:57,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 05:01:57,730 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 05:01:57,733 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 05:01:57,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-19 05:01:57,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 05:01:57,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-19 05:01:57,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 05:01:58,128 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:01:58,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 05:01:58,301 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:01:58,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142261460] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 05:01:58,302 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 05:01:58,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2022-01-19 05:01:58,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55717360] [2022-01-19 05:01:58,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 05:01:58,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-19 05:01:58,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:01:58,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-19 05:01:58,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=706, Unknown=0, NotChecked=0, Total=812 [2022-01-19 05:01:58,305 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 101 [2022-01-19 05:01:58,307 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 176 transitions, 1278 flow. Second operand has 29 states, 29 states have (on average 68.10344827586206) internal successors, (1975), 29 states have internal predecessors, (1975), 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 05:01:58,307 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:01:58,307 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 101 [2022-01-19 05:01:58,307 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:01:59,370 INFO L129 PetriNetUnfolder]: 373/1731 cut-off events. [2022-01-19 05:01:59,371 INFO L130 PetriNetUnfolder]: For 18521/18525 co-relation queries the response was YES. [2022-01-19 05:01:59,386 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7406 conditions, 1731 events. 373/1731 cut-off events. For 18521/18525 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 15331 event pairs, 95 based on Foata normal form. 17/1748 useless extension candidates. Maximal degree in co-relation 7284. Up to 314 conditions per place. [2022-01-19 05:01:59,393 INFO L132 encePairwiseOnDemand]: 85/101 looper letters, 86 selfloop transitions, 34 changer transitions 135/306 dead transitions. [2022-01-19 05:01:59,394 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 306 transitions, 3570 flow [2022-01-19 05:01:59,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 05:01:59,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 05:01:59,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2677 transitions. [2022-01-19 05:01:59,398 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6974986972381448 [2022-01-19 05:01:59,398 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2677 transitions. [2022-01-19 05:01:59,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2677 transitions. [2022-01-19 05:01:59,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:01:59,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2677 transitions. [2022-01-19 05:01:59,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 70.44736842105263) internal successors, (2677), 38 states have internal predecessors, (2677), 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 05:01:59,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 101.0) internal successors, (3939), 39 states have internal predecessors, (3939), 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 05:01:59,409 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 101.0) internal successors, (3939), 39 states have internal predecessors, (3939), 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 05:01:59,409 INFO L186 Difference]: Start difference. First operand has 287 places, 176 transitions, 1278 flow. Second operand 38 states and 2677 transitions. [2022-01-19 05:01:59,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 306 transitions, 3570 flow [2022-01-19 05:01:59,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 306 transitions, 2820 flow, removed 340 selfloop flow, removed 46 redundant places. [2022-01-19 05:01:59,475 INFO L242 Difference]: Finished difference. Result has 246 places, 147 transitions, 947 flow [2022-01-19 05:01:59,475 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=947, PETRI_PLACES=246, PETRI_TRANSITIONS=147} [2022-01-19 05:01:59,476 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 155 predicate places. [2022-01-19 05:01:59,476 INFO L470 AbstractCegarLoop]: Abstraction has has 246 places, 147 transitions, 947 flow [2022-01-19 05:01:59,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 68.10344827586206) internal successors, (1975), 29 states have internal predecessors, (1975), 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 05:01:59,477 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:01:59,477 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:59,502 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 05:01:59,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:01:59,692 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 05:01:59,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:01:59,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1138879336, now seen corresponding path program 4 times [2022-01-19 05:01:59,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:01:59,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583685847] [2022-01-19 05:01:59,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:01:59,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:01:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:01:59,806 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:01:59,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:01:59,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583685847] [2022-01-19 05:01:59,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583685847] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 05:01:59,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931181237] [2022-01-19 05:01:59,806 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 05:01:59,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:01:59,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 05:01:59,808 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 05:01:59,808 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 05:01:59,865 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 05:01:59,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 05:01:59,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-19 05:01:59,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 05:02:00,147 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:02:00,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 05:02:00,310 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:02:00,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931181237] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 05:02:00,310 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 05:02:00,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2022-01-19 05:02:00,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241527438] [2022-01-19 05:02:00,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 05:02:00,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-19 05:02:00,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:02:00,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-19 05:02:00,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2022-01-19 05:02:00,315 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 101 [2022-01-19 05:02:00,316 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 147 transitions, 947 flow. Second operand has 29 states, 29 states have (on average 68.10344827586206) internal successors, (1975), 29 states have internal predecessors, (1975), 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 05:02:00,316 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:02:00,316 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 101 [2022-01-19 05:02:00,316 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:02:01,912 INFO L129 PetriNetUnfolder]: 286/1396 cut-off events. [2022-01-19 05:02:01,912 INFO L130 PetriNetUnfolder]: For 14807/14807 co-relation queries the response was YES. [2022-01-19 05:02:01,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5917 conditions, 1396 events. 286/1396 cut-off events. For 14807/14807 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 11505 event pairs, 61 based on Foata normal form. 17/1413 useless extension candidates. Maximal degree in co-relation 5808. Up to 177 conditions per place. [2022-01-19 05:02:01,925 INFO L132 encePairwiseOnDemand]: 85/101 looper letters, 76 selfloop transitions, 28 changer transitions 166/321 dead transitions. [2022-01-19 05:02:01,925 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 321 transitions, 4325 flow [2022-01-19 05:02:01,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-19 05:02:01,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2022-01-19 05:02:01,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 4395 transitions. [2022-01-19 05:02:01,932 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6907119283356907 [2022-01-19 05:02:01,932 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 4395 transitions. [2022-01-19 05:02:01,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 4395 transitions. [2022-01-19 05:02:01,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:02:01,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 4395 transitions. [2022-01-19 05:02:01,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 69.76190476190476) internal successors, (4395), 63 states have internal predecessors, (4395), 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 05:02:01,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 101.0) internal successors, (6464), 64 states have internal predecessors, (6464), 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 05:02:01,949 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 101.0) internal successors, (6464), 64 states have internal predecessors, (6464), 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 05:02:01,949 INFO L186 Difference]: Start difference. First operand has 246 places, 147 transitions, 947 flow. Second operand 63 states and 4395 transitions. [2022-01-19 05:02:01,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 321 transitions, 4325 flow [2022-01-19 05:02:01,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 321 transitions, 3141 flow, removed 552 selfloop flow, removed 39 redundant places. [2022-01-19 05:02:01,987 INFO L242 Difference]: Finished difference. Result has 266 places, 131 transitions, 815 flow [2022-01-19 05:02:01,987 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=815, PETRI_PLACES=266, PETRI_TRANSITIONS=131} [2022-01-19 05:02:01,988 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 175 predicate places. [2022-01-19 05:02:01,988 INFO L470 AbstractCegarLoop]: Abstraction has has 266 places, 131 transitions, 815 flow [2022-01-19 05:02:01,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 68.10344827586206) internal successors, (1975), 29 states have internal predecessors, (1975), 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 05:02:01,989 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:02:01,989 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:02,011 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 05:02:02,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-19 05:02:02,211 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 05:02:02,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:02:02,212 INFO L85 PathProgramCache]: Analyzing trace with hash -413189008, now seen corresponding path program 5 times [2022-01-19 05:02:02,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:02:02,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177220634] [2022-01-19 05:02:02,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:02:02,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:02:02,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:02:02,317 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:02:02,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:02:02,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177220634] [2022-01-19 05:02:02,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177220634] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 05:02:02,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088017162] [2022-01-19 05:02:02,318 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-19 05:02:02,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:02:02,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 05:02:02,319 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 05:02:02,346 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 05:02:02,397 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 05:02:02,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 05:02:02,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-19 05:02:02,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 05:02:02,676 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:02:02,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 05:02:02,841 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:02:02,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088017162] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 05:02:02,842 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 05:02:02,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2022-01-19 05:02:02,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946790954] [2022-01-19 05:02:02,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 05:02:02,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-19 05:02:02,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:02:02,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-19 05:02:02,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=706, Unknown=0, NotChecked=0, Total=812 [2022-01-19 05:02:02,845 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 101 [2022-01-19 05:02:02,847 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 131 transitions, 815 flow. Second operand has 29 states, 29 states have (on average 68.10344827586206) internal successors, (1975), 29 states have internal predecessors, (1975), 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 05:02:02,847 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:02:02,847 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 101 [2022-01-19 05:02:02,847 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:02:03,717 INFO L129 PetriNetUnfolder]: 174/855 cut-off events. [2022-01-19 05:02:03,717 INFO L130 PetriNetUnfolder]: For 10957/10957 co-relation queries the response was YES. [2022-01-19 05:02:03,722 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3508 conditions, 855 events. 174/855 cut-off events. For 10957/10957 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5859 event pairs, 30 based on Foata normal form. 8/863 useless extension candidates. Maximal degree in co-relation 3388. Up to 110 conditions per place. [2022-01-19 05:02:03,724 INFO L132 encePairwiseOnDemand]: 85/101 looper letters, 38 selfloop transitions, 20 changer transitions 97/206 dead transitions. [2022-01-19 05:02:03,724 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 206 transitions, 2062 flow [2022-01-19 05:02:03,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 05:02:03,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 05:02:03,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2508 transitions. [2022-01-19 05:02:03,728 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6897689768976898 [2022-01-19 05:02:03,728 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2508 transitions. [2022-01-19 05:02:03,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2508 transitions. [2022-01-19 05:02:03,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:02:03,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2508 transitions. [2022-01-19 05:02:03,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 69.66666666666667) internal successors, (2508), 36 states have internal predecessors, (2508), 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 05:02:03,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 101.0) internal successors, (3737), 37 states have internal predecessors, (3737), 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 05:02:03,736 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 101.0) internal successors, (3737), 37 states have internal predecessors, (3737), 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 05:02:03,736 INFO L186 Difference]: Start difference. First operand has 266 places, 131 transitions, 815 flow. Second operand 36 states and 2508 transitions. [2022-01-19 05:02:03,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 206 transitions, 2062 flow [2022-01-19 05:02:03,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 206 transitions, 1525 flow, removed 218 selfloop flow, removed 59 redundant places. [2022-01-19 05:02:03,760 INFO L242 Difference]: Finished difference. Result has 203 places, 104 transitions, 505 flow [2022-01-19 05:02:03,761 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=505, PETRI_PLACES=203, PETRI_TRANSITIONS=104} [2022-01-19 05:02:03,761 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 112 predicate places. [2022-01-19 05:02:03,761 INFO L470 AbstractCegarLoop]: Abstraction has has 203 places, 104 transitions, 505 flow [2022-01-19 05:02:03,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 68.10344827586206) internal successors, (1975), 29 states have internal predecessors, (1975), 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 05:02:03,762 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:02:03,762 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:03,785 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 05:02:03,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:02:03,976 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 05:02:03,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:02:03,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1258968146, now seen corresponding path program 6 times [2022-01-19 05:02:03,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:02:03,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328578550] [2022-01-19 05:02:03,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:02:03,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:02:03,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:02:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:02:04,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:02:04,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328578550] [2022-01-19 05:02:04,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328578550] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 05:02:04,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679635754] [2022-01-19 05:02:04,098 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-19 05:02:04,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:02:04,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 05:02:04,099 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 05:02:04,101 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 05:02:04,168 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-19 05:02:04,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 05:02:04,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-19 05:02:04,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 05:02:04,434 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:02:04,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 05:02:04,566 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 05:02:04,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679635754] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 05:02:04,566 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 05:02:04,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 27 [2022-01-19 05:02:04,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18054395] [2022-01-19 05:02:04,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 05:02:04,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-19 05:02:04,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:02:04,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-19 05:02:04,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2022-01-19 05:02:04,569 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 101 [2022-01-19 05:02:04,570 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 104 transitions, 505 flow. Second operand has 27 states, 27 states have (on average 68.11111111111111) internal successors, (1839), 27 states have internal predecessors, (1839), 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 05:02:04,570 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:02:04,570 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 101 [2022-01-19 05:02:04,570 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:02:04,990 INFO L129 PetriNetUnfolder]: 66/405 cut-off events. [2022-01-19 05:02:04,990 INFO L130 PetriNetUnfolder]: For 2256/2256 co-relation queries the response was YES. [2022-01-19 05:02:04,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1375 conditions, 405 events. 66/405 cut-off events. For 2256/2256 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2047 event pairs, 27 based on Foata normal form. 7/412 useless extension candidates. Maximal degree in co-relation 1332. Up to 90 conditions per place. [2022-01-19 05:02:04,994 INFO L132 encePairwiseOnDemand]: 85/101 looper letters, 30 selfloop transitions, 8 changer transitions 46/135 dead transitions. [2022-01-19 05:02:04,994 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 135 transitions, 1046 flow [2022-01-19 05:02:04,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 05:02:04,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 05:02:04,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1461 transitions. [2022-01-19 05:02:05,000 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6888260254596889 [2022-01-19 05:02:05,000 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1461 transitions. [2022-01-19 05:02:05,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1461 transitions. [2022-01-19 05:02:05,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:02:05,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1461 transitions. [2022-01-19 05:02:05,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 69.57142857142857) internal successors, (1461), 21 states have internal predecessors, (1461), 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 05:02:05,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 101.0) internal successors, (2222), 22 states have internal predecessors, (2222), 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 05:02:05,010 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 101.0) internal successors, (2222), 22 states have internal predecessors, (2222), 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 05:02:05,010 INFO L186 Difference]: Start difference. First operand has 203 places, 104 transitions, 505 flow. Second operand 21 states and 1461 transitions. [2022-01-19 05:02:05,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 135 transitions, 1046 flow [2022-01-19 05:02:05,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 135 transitions, 853 flow, removed 67 selfloop flow, removed 30 redundant places. [2022-01-19 05:02:05,016 INFO L242 Difference]: Finished difference. Result has 156 places, 89 transitions, 344 flow [2022-01-19 05:02:05,017 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=344, PETRI_PLACES=156, PETRI_TRANSITIONS=89} [2022-01-19 05:02:05,017 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 65 predicate places. [2022-01-19 05:02:05,017 INFO L470 AbstractCegarLoop]: Abstraction has has 156 places, 89 transitions, 344 flow [2022-01-19 05:02:05,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 68.11111111111111) internal successors, (1839), 27 states have internal predecessors, (1839), 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 05:02:05,018 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:02:05,018 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:05,044 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 05:02:05,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:02:05,231 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 05:02:05,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:02:05,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1316102914, now seen corresponding path program 7 times [2022-01-19 05:02:05,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:02:05,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146939893] [2022-01-19 05:02:05,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:02:05,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:02:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:02:05,334 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:02:05,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:02:05,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146939893] [2022-01-19 05:02:05,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146939893] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 05:02:05,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667648327] [2022-01-19 05:02:05,335 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-19 05:02:05,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:02:05,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 05:02:05,340 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 05:02:05,341 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 05:02:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:02:05,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-19 05:02:05,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 05:02:05,676 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:02:05,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 05:02:05,855 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 05:02:05,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667648327] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 05:02:05,855 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 05:02:05,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 27 [2022-01-19 05:02:05,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809498871] [2022-01-19 05:02:05,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 05:02:05,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-19 05:02:05,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:02:05,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-19 05:02:05,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-01-19 05:02:05,860 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 101 [2022-01-19 05:02:05,861 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 89 transitions, 344 flow. Second operand has 27 states, 27 states have (on average 68.11111111111111) internal successors, (1839), 27 states have internal predecessors, (1839), 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 05:02:05,861 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:02:05,861 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 101 [2022-01-19 05:02:05,861 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:02:06,422 INFO L129 PetriNetUnfolder]: 64/392 cut-off events. [2022-01-19 05:02:06,422 INFO L130 PetriNetUnfolder]: For 1193/1193 co-relation queries the response was YES. [2022-01-19 05:02:06,423 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1180 conditions, 392 events. 64/392 cut-off events. For 1193/1193 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1956 event pairs, 11 based on Foata normal form. 7/399 useless extension candidates. Maximal degree in co-relation 1147. Up to 35 conditions per place. [2022-01-19 05:02:06,424 INFO L132 encePairwiseOnDemand]: 85/101 looper letters, 28 selfloop transitions, 18 changer transitions 47/144 dead transitions. [2022-01-19 05:02:06,424 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 144 transitions, 997 flow [2022-01-19 05:02:06,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-19 05:02:06,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-01-19 05:02:06,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2206 transitions. [2022-01-19 05:02:06,427 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.682549504950495 [2022-01-19 05:02:06,427 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2206 transitions. [2022-01-19 05:02:06,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2206 transitions. [2022-01-19 05:02:06,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:02:06,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2206 transitions. [2022-01-19 05:02:06,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 68.9375) internal successors, (2206), 32 states have internal predecessors, (2206), 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 05:02:06,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 101.0) internal successors, (3333), 33 states have internal predecessors, (3333), 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 05:02:06,433 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 101.0) internal successors, (3333), 33 states have internal predecessors, (3333), 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 05:02:06,433 INFO L186 Difference]: Start difference. First operand has 156 places, 89 transitions, 344 flow. Second operand 32 states and 2206 transitions. [2022-01-19 05:02:06,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 144 transitions, 997 flow [2022-01-19 05:02:06,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 144 transitions, 864 flow, removed 55 selfloop flow, removed 19 redundant places. [2022-01-19 05:02:06,438 INFO L242 Difference]: Finished difference. Result has 156 places, 87 transitions, 353 flow [2022-01-19 05:02:06,439 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=353, PETRI_PLACES=156, PETRI_TRANSITIONS=87} [2022-01-19 05:02:06,439 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 65 predicate places. [2022-01-19 05:02:06,439 INFO L470 AbstractCegarLoop]: Abstraction has has 156 places, 87 transitions, 353 flow [2022-01-19 05:02:06,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 68.11111111111111) internal successors, (1839), 27 states have internal predecessors, (1839), 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 05:02:06,440 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:02:06,440 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:06,467 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 05:02:06,662 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,SelfDestructingSolverStorable12 [2022-01-19 05:02:06,663 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 05:02:06,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:02:06,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1374890000, now seen corresponding path program 8 times [2022-01-19 05:02:06,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:02:06,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931482105] [2022-01-19 05:02:06,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:02:06,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:02:06,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:02:06,773 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:02:06,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:02:06,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931482105] [2022-01-19 05:02:06,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931482105] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 05:02:06,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016149451] [2022-01-19 05:02:06,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 05:02:06,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:02:06,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 05:02:06,776 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 05:02:06,802 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 05:02:06,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 05:02:06,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 05:02:06,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-19 05:02:06,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 05:02:07,156 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:02:07,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 05:02:07,315 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 05:02:07,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016149451] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 05:02:07,315 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 05:02:07,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 27 [2022-01-19 05:02:07,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435937730] [2022-01-19 05:02:07,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 05:02:07,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-19 05:02:07,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:02:07,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-19 05:02:07,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2022-01-19 05:02:07,317 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 101 [2022-01-19 05:02:07,319 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 87 transitions, 353 flow. Second operand has 27 states, 27 states have (on average 68.11111111111111) internal successors, (1839), 27 states have internal predecessors, (1839), 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 05:02:07,319 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:02:07,319 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 101 [2022-01-19 05:02:07,319 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:02:08,038 INFO L129 PetriNetUnfolder]: 49/317 cut-off events. [2022-01-19 05:02:08,038 INFO L130 PetriNetUnfolder]: For 1238/1238 co-relation queries the response was YES. [2022-01-19 05:02:08,040 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1025 conditions, 317 events. 49/317 cut-off events. For 1238/1238 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1459 event pairs, 3 based on Foata normal form. 15/332 useless extension candidates. Maximal degree in co-relation 992. Up to 28 conditions per place. [2022-01-19 05:02:08,042 INFO L132 encePairwiseOnDemand]: 85/101 looper letters, 0 selfloop transitions, 0 changer transitions 143/143 dead transitions. [2022-01-19 05:02:08,042 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 143 transitions, 1107 flow [2022-01-19 05:02:08,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 05:02:08,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 05:02:08,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2475 transitions. [2022-01-19 05:02:08,045 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6806930693069307 [2022-01-19 05:02:08,045 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2475 transitions. [2022-01-19 05:02:08,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2475 transitions. [2022-01-19 05:02:08,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:02:08,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2475 transitions. [2022-01-19 05:02:08,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 68.75) internal successors, (2475), 36 states have internal predecessors, (2475), 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 05:02:08,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 101.0) internal successors, (3737), 37 states have internal predecessors, (3737), 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 05:02:08,053 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 101.0) internal successors, (3737), 37 states have internal predecessors, (3737), 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 05:02:08,053 INFO L186 Difference]: Start difference. First operand has 156 places, 87 transitions, 353 flow. Second operand 36 states and 2475 transitions. [2022-01-19 05:02:08,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 143 transitions, 1107 flow [2022-01-19 05:02:08,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 143 transitions, 845 flow, removed 99 selfloop flow, removed 27 redundant places. [2022-01-19 05:02:08,058 INFO L242 Difference]: Finished difference. Result has 144 places, 0 transitions, 0 flow [2022-01-19 05:02:08,058 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=0, PETRI_PLACES=144, PETRI_TRANSITIONS=0} [2022-01-19 05:02:08,059 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 53 predicate places. [2022-01-19 05:02:08,059 INFO L470 AbstractCegarLoop]: Abstraction has has 144 places, 0 transitions, 0 flow [2022-01-19 05:02:08,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 68.11111111111111) internal successors, (1839), 27 states have internal predecessors, (1839), 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 05:02:08,060 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-19 05:02:08,060 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-01-19 05:02:08,061 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-01-19 05:02:08,088 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 05:02:08,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-19 05:02:08,287 INFO L732 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1] [2022-01-19 05:02:08,287 INFO L309 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2022-01-19 05:02:08,288 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2022-01-19 05:02:08,288 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 05:02:08,288 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-19 05:02:08,290 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 107 places, 101 transitions, 226 flow [2022-01-19 05:02:08,298 INFO L129 PetriNetUnfolder]: 5/119 cut-off events. [2022-01-19 05:02:08,298 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 05:02:08,299 INFO L84 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 119 events. 5/119 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 147 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 128. Up to 6 conditions per place. [2022-01-19 05:02:08,299 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 101 transitions, 226 flow [2022-01-19 05:02:08,300 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 86 transitions, 187 flow [2022-01-19 05:02:08,308 INFO L129 PetriNetUnfolder]: 5/114 cut-off events. [2022-01-19 05:02:08,309 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 05:02:08,309 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:02:08,309 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:08,309 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-19 05:02:08,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:02:08,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1223427672, now seen corresponding path program 1 times [2022-01-19 05:02:08,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:02:08,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352022798] [2022-01-19 05:02:08,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:02:08,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:02:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-19 05:02:08,324 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-19 05:02:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-19 05:02:08,345 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-19 05:02:08,346 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-19 05:02:08,346 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 2 remaining) [2022-01-19 05:02:08,346 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 2 remaining) [2022-01-19 05:02:08,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-19 05:02:08,347 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-19 05:02:08,347 INFO L309 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (2/2) [2022-01-19 05:02:08,347 WARN L235 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-19 05:02:08,347 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-01-19 05:02:08,366 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,367 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,367 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,367 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,367 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,367 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,367 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,367 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,367 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,367 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,367 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,367 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,367 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,367 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,368 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,368 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,368 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,368 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,368 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,368 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,368 WARN L322 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,368 WARN L322 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,368 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,368 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,368 WARN L322 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,368 WARN L322 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,368 WARN L322 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,368 WARN L322 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,369 WARN L322 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,369 WARN L322 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,369 WARN L322 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,369 WARN L322 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,369 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,369 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,369 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,370 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,370 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,370 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,370 WARN L322 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,370 WARN L322 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,370 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,370 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,370 WARN L322 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,370 WARN L322 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,370 WARN L322 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,370 WARN L322 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,370 WARN L322 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,370 WARN L322 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,370 WARN L322 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,371 WARN L322 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,371 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,371 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,371 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,371 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,371 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,371 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,371 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,371 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,371 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,371 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,371 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,372 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,372 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,372 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,372 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,372 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,372 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,372 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,372 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,372 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,372 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,372 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,372 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,373 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,373 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,373 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,373 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,373 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,373 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,373 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,373 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,373 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,373 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,373 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,373 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,373 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,374 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,374 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,374 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,374 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,374 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,374 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,374 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,374 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,374 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,374 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,374 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,374 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,374 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,375 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,375 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,375 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,375 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,375 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,375 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,375 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,376 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,376 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,376 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,376 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,376 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,376 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,376 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,376 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,376 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,376 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,376 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,377 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,377 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,377 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,377 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,377 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,377 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,377 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,377 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,377 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,378 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,379 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,379 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,379 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,379 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,379 WARN L322 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,379 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,379 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,380 WARN L322 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,380 WARN L322 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,380 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,380 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,380 WARN L322 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,380 WARN L322 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,380 WARN L322 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,380 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,381 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,381 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,381 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,381 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,381 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,381 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,381 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,381 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,381 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,381 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,381 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,382 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,382 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,382 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,382 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,382 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,382 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:02:08,382 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-19 05:02:08,383 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 05:02:08,384 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 05:02:08,384 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 05:02:08,385 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 131 places, 122 transitions, 286 flow [2022-01-19 05:02:08,393 INFO L129 PetriNetUnfolder]: 6/145 cut-off events. [2022-01-19 05:02:08,393 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-01-19 05:02:08,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 145 events. 6/145 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 182 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 159. Up to 8 conditions per place. [2022-01-19 05:02:08,394 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 122 transitions, 286 flow [2022-01-19 05:02:08,396 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 93 transitions, 210 flow [2022-01-19 05:02:08,399 INFO L129 PetriNetUnfolder]: 3/56 cut-off events. [2022-01-19 05:02:08,399 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 05:02:08,399 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:02:08,399 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] [2022-01-19 05:02:08,399 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 05:02:08,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:02:08,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1852120139, now seen corresponding path program 1 times [2022-01-19 05:02:08,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:02:08,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900076166] [2022-01-19 05:02:08,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:02:08,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:02:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:02:08,513 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 05:02:08,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:02:08,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900076166] [2022-01-19 05:02:08,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900076166] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:02:08,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:02:08,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 05:02:08,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734876134] [2022-01-19 05:02:08,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:02:08,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 05:02:08,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:02:08,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 05:02:08,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-19 05:02:08,515 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 122 [2022-01-19 05:02:08,516 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 93 transitions, 210 flow. Second operand has 9 states, 9 states have (on average 85.44444444444444) internal successors, (769), 9 states have internal predecessors, (769), 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 05:02:08,516 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:02:08,516 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 122 [2022-01-19 05:02:08,516 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:02:08,958 INFO L129 PetriNetUnfolder]: 2081/4514 cut-off events. [2022-01-19 05:02:08,958 INFO L130 PetriNetUnfolder]: For 489/489 co-relation queries the response was YES. [2022-01-19 05:02:08,974 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7940 conditions, 4514 events. 2081/4514 cut-off events. For 489/489 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 39824 event pairs, 167 based on Foata normal form. 76/4177 useless extension candidates. Maximal degree in co-relation 7887. Up to 1142 conditions per place. [2022-01-19 05:02:08,991 INFO L132 encePairwiseOnDemand]: 108/122 looper letters, 27 selfloop transitions, 7 changer transitions 64/158 dead transitions. [2022-01-19 05:02:08,991 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 158 transitions, 608 flow [2022-01-19 05:02:08,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 05:02:08,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 05:02:08,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1030 transitions. [2022-01-19 05:02:08,993 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.767511177347243 [2022-01-19 05:02:08,993 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1030 transitions. [2022-01-19 05:02:08,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1030 transitions. [2022-01-19 05:02:08,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:02:08,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1030 transitions. [2022-01-19 05:02:08,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 93.63636363636364) internal successors, (1030), 11 states have internal predecessors, (1030), 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 05:02:08,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 122.0) internal successors, (1464), 12 states have internal predecessors, (1464), 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 05:02:08,996 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 122.0) internal successors, (1464), 12 states have internal predecessors, (1464), 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 05:02:08,997 INFO L186 Difference]: Start difference. First operand has 100 places, 93 transitions, 210 flow. Second operand 11 states and 1030 transitions. [2022-01-19 05:02:08,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 158 transitions, 608 flow [2022-01-19 05:02:08,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 158 transitions, 589 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-01-19 05:02:08,999 INFO L242 Difference]: Finished difference. Result has 113 places, 87 transitions, 237 flow [2022-01-19 05:02:09,000 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=237, PETRI_PLACES=113, PETRI_TRANSITIONS=87} [2022-01-19 05:02:09,000 INFO L334 CegarLoopForPetriNet]: 100 programPoint places, 13 predicate places. [2022-01-19 05:02:09,000 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 87 transitions, 237 flow [2022-01-19 05:02:09,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 85.44444444444444) internal successors, (769), 9 states have internal predecessors, (769), 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 05:02:09,001 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:02:09,001 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] [2022-01-19 05:02:09,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-19 05:02:09,001 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 05:02:09,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:02:09,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1166444432, now seen corresponding path program 1 times [2022-01-19 05:02:09,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:02:09,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278089060] [2022-01-19 05:02:09,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:02:09,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:02:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:02:09,080 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 05:02:09,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:02:09,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278089060] [2022-01-19 05:02:09,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278089060] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:02:09,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:02:09,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 05:02:09,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839950706] [2022-01-19 05:02:09,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:02:09,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 05:02:09,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:02:09,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 05:02:09,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-01-19 05:02:09,082 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 122 [2022-01-19 05:02:09,083 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 87 transitions, 237 flow. Second operand has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 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 05:02:09,083 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:02:09,083 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 122 [2022-01-19 05:02:09,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:02:09,694 INFO L129 PetriNetUnfolder]: 2708/5869 cut-off events. [2022-01-19 05:02:09,694 INFO L130 PetriNetUnfolder]: For 3654/3654 co-relation queries the response was YES. [2022-01-19 05:02:09,715 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14220 conditions, 5869 events. 2708/5869 cut-off events. For 3654/3654 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 49193 event pairs, 479 based on Foata normal form. 95/5665 useless extension candidates. Maximal degree in co-relation 14161. Up to 1881 conditions per place. [2022-01-19 05:02:09,737 INFO L132 encePairwiseOnDemand]: 109/122 looper letters, 66 selfloop transitions, 18 changer transitions 44/185 dead transitions. [2022-01-19 05:02:09,737 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 185 transitions, 864 flow [2022-01-19 05:02:09,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-19 05:02:09,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-01-19 05:02:09,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1360 transitions. [2022-01-19 05:02:09,739 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7431693989071039 [2022-01-19 05:02:09,739 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1360 transitions. [2022-01-19 05:02:09,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1360 transitions. [2022-01-19 05:02:09,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:02:09,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1360 transitions. [2022-01-19 05:02:09,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 90.66666666666667) internal successors, (1360), 15 states have internal predecessors, (1360), 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 05:02:09,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 122.0) internal successors, (1952), 16 states have internal predecessors, (1952), 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 05:02:09,743 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 122.0) internal successors, (1952), 16 states have internal predecessors, (1952), 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 05:02:09,743 INFO L186 Difference]: Start difference. First operand has 113 places, 87 transitions, 237 flow. Second operand 15 states and 1360 transitions. [2022-01-19 05:02:09,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 185 transitions, 864 flow [2022-01-19 05:02:09,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 185 transitions, 835 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-01-19 05:02:09,774 INFO L242 Difference]: Finished difference. Result has 120 places, 98 transitions, 355 flow [2022-01-19 05:02:09,774 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=355, PETRI_PLACES=120, PETRI_TRANSITIONS=98} [2022-01-19 05:02:09,774 INFO L334 CegarLoopForPetriNet]: 100 programPoint places, 20 predicate places. [2022-01-19 05:02:09,775 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 98 transitions, 355 flow [2022-01-19 05:02:09,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 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 05:02:09,775 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:02:09,775 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:09,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-19 05:02:09,775 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 05:02:09,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:02:09,776 INFO L85 PathProgramCache]: Analyzing trace with hash -517292059, now seen corresponding path program 1 times [2022-01-19 05:02:09,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:02:09,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460728164] [2022-01-19 05:02:09,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:02:09,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:02:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:02:09,851 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:02:09,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:02:09,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460728164] [2022-01-19 05:02:09,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460728164] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 05:02:09,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592427935] [2022-01-19 05:02:09,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:02:09,852 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:02:09,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 05:02:09,856 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 05:02:09,871 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 05:02:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:02:09,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-19 05:02:09,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 05:02:10,206 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:02:10,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 05:02:10,367 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:02:10,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592427935] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 05:02:10,367 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 05:02:10,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 25 [2022-01-19 05:02:10,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42814320] [2022-01-19 05:02:10,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 05:02:10,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-19 05:02:10,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:02:10,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-19 05:02:10,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2022-01-19 05:02:10,370 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 122 [2022-01-19 05:02:10,371 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 98 transitions, 355 flow. Second operand has 25 states, 25 states have (on average 83.32) internal successors, (2083), 25 states have internal predecessors, (2083), 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 05:02:10,371 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:02:10,371 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 122 [2022-01-19 05:02:10,371 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:02:11,749 INFO L129 PetriNetUnfolder]: 3698/8645 cut-off events. [2022-01-19 05:02:11,750 INFO L130 PetriNetUnfolder]: For 16345/16345 co-relation queries the response was YES. [2022-01-19 05:02:11,773 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26009 conditions, 8645 events. 3698/8645 cut-off events. For 16345/16345 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 82047 event pairs, 1428 based on Foata normal form. 182/8822 useless extension candidates. Maximal degree in co-relation 25943. Up to 2475 conditions per place. [2022-01-19 05:02:11,804 INFO L132 encePairwiseOnDemand]: 106/122 looper letters, 87 selfloop transitions, 50 changer transitions 91/284 dead transitions. [2022-01-19 05:02:11,804 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 284 transitions, 1904 flow [2022-01-19 05:02:11,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-19 05:02:11,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-01-19 05:02:11,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2231 transitions. [2022-01-19 05:02:11,807 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7314754098360656 [2022-01-19 05:02:11,807 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2231 transitions. [2022-01-19 05:02:11,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2231 transitions. [2022-01-19 05:02:11,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:02:11,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2231 transitions. [2022-01-19 05:02:11,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 89.24) internal successors, (2231), 25 states have internal predecessors, (2231), 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 05:02:11,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 122.0) internal successors, (3172), 26 states have internal predecessors, (3172), 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 05:02:11,814 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 122.0) internal successors, (3172), 26 states have internal predecessors, (3172), 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 05:02:11,814 INFO L186 Difference]: Start difference. First operand has 120 places, 98 transitions, 355 flow. Second operand 25 states and 2231 transitions. [2022-01-19 05:02:11,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 284 transitions, 1904 flow [2022-01-19 05:02:12,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 284 transitions, 1757 flow, removed 60 selfloop flow, removed 7 redundant places. [2022-01-19 05:02:12,091 INFO L242 Difference]: Finished difference. Result has 146 places, 142 transitions, 786 flow [2022-01-19 05:02:12,091 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=786, PETRI_PLACES=146, PETRI_TRANSITIONS=142} [2022-01-19 05:02:12,092 INFO L334 CegarLoopForPetriNet]: 100 programPoint places, 46 predicate places. [2022-01-19 05:02:12,092 INFO L470 AbstractCegarLoop]: Abstraction has has 146 places, 142 transitions, 786 flow [2022-01-19 05:02:12,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 83.32) internal successors, (2083), 25 states have internal predecessors, (2083), 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 05:02:12,092 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:02:12,092 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:12,116 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 05:02:12,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-19 05:02:12,306 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 05:02:12,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:02:12,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1617676219, now seen corresponding path program 1 times [2022-01-19 05:02:12,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:02:12,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823051204] [2022-01-19 05:02:12,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:02:12,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:02:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:02:12,428 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:02:12,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:02:12,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823051204] [2022-01-19 05:02:12,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823051204] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 05:02:12,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693689206] [2022-01-19 05:02:12,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:02:12,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:02:12,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 05:02:12,430 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 05:02:12,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-19 05:02:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:02:12,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-19 05:02:12,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 05:02:12,810 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:02:12,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 05:02:13,002 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:02:13,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693689206] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 05:02:13,002 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 05:02:13,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2022-01-19 05:02:13,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719843322] [2022-01-19 05:02:13,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 05:02:13,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-19 05:02:13,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:02:13,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-19 05:02:13,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2022-01-19 05:02:13,005 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 122 [2022-01-19 05:02:13,007 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 142 transitions, 786 flow. Second operand has 29 states, 29 states have (on average 82.10344827586206) internal successors, (2381), 29 states have internal predecessors, (2381), 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 05:02:13,007 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:02:13,007 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 122 [2022-01-19 05:02:13,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:02:16,580 INFO L129 PetriNetUnfolder]: 5596/14465 cut-off events. [2022-01-19 05:02:16,580 INFO L130 PetriNetUnfolder]: For 44358/44372 co-relation queries the response was YES. [2022-01-19 05:02:16,626 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49558 conditions, 14465 events. 5596/14465 cut-off events. For 44358/44372 co-relation queries the response was YES. Maximal size of possible extension queue 949. Compared 156757 event pairs, 1442 based on Foata normal form. 78/14539 useless extension candidates. Maximal degree in co-relation 49483. Up to 2925 conditions per place. [2022-01-19 05:02:16,685 INFO L132 encePairwiseOnDemand]: 105/122 looper letters, 288 selfloop transitions, 208 changer transitions 100/651 dead transitions. [2022-01-19 05:02:16,685 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 651 transitions, 5627 flow [2022-01-19 05:02:16,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-19 05:02:16,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-01-19 05:02:16,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7262 transitions. [2022-01-19 05:02:16,691 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7086260733801717 [2022-01-19 05:02:16,691 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7262 transitions. [2022-01-19 05:02:16,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7262 transitions. [2022-01-19 05:02:16,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:02:16,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7262 transitions. [2022-01-19 05:02:16,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 86.45238095238095) internal successors, (7262), 84 states have internal predecessors, (7262), 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 05:02:16,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 122.0) internal successors, (10370), 85 states have internal predecessors, (10370), 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 05:02:16,710 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 122.0) internal successors, (10370), 85 states have internal predecessors, (10370), 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 05:02:16,710 INFO L186 Difference]: Start difference. First operand has 146 places, 142 transitions, 786 flow. Second operand 84 states and 7262 transitions. [2022-01-19 05:02:16,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 651 transitions, 5627 flow [2022-01-19 05:02:16,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 651 transitions, 5155 flow, removed 232 selfloop flow, removed 9 redundant places. [2022-01-19 05:02:16,940 INFO L242 Difference]: Finished difference. Result has 271 places, 317 transitions, 3066 flow [2022-01-19 05:02:16,940 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=3066, PETRI_PLACES=271, PETRI_TRANSITIONS=317} [2022-01-19 05:02:16,941 INFO L334 CegarLoopForPetriNet]: 100 programPoint places, 171 predicate places. [2022-01-19 05:02:16,941 INFO L470 AbstractCegarLoop]: Abstraction has has 271 places, 317 transitions, 3066 flow [2022-01-19 05:02:16,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 82.10344827586206) internal successors, (2381), 29 states have internal predecessors, (2381), 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 05:02:16,942 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:02:16,942 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:16,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-19 05:02:17,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:02:17,155 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 05:02:17,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:02:17,156 INFO L85 PathProgramCache]: Analyzing trace with hash 461722973, now seen corresponding path program 2 times [2022-01-19 05:02:17,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:02:17,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887456244] [2022-01-19 05:02:17,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:02:17,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:02:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:02:17,269 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:02:17,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:02:17,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887456244] [2022-01-19 05:02:17,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887456244] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 05:02:17,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771608501] [2022-01-19 05:02:17,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 05:02:17,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:02:17,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 05:02:17,271 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 05:02:17,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-19 05:02:17,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 05:02:17,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 05:02:17,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-19 05:02:17,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 05:02:17,647 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:02:17,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 05:02:17,824 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:02:17,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771608501] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 05:02:17,825 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 05:02:17,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2022-01-19 05:02:17,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087511671] [2022-01-19 05:02:17,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 05:02:17,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-19 05:02:17,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:02:17,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-19 05:02:17,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=727, Unknown=0, NotChecked=0, Total=812 [2022-01-19 05:02:17,828 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 122 [2022-01-19 05:02:17,829 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 317 transitions, 3066 flow. Second operand has 29 states, 29 states have (on average 82.10344827586206) internal successors, (2381), 29 states have internal predecessors, (2381), 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 05:02:17,829 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:02:17,829 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 122 [2022-01-19 05:02:17,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:02:26,971 INFO L129 PetriNetUnfolder]: 11343/30561 cut-off events. [2022-01-19 05:02:26,971 INFO L130 PetriNetUnfolder]: For 500614/500668 co-relation queries the response was YES. [2022-01-19 05:02:27,296 INFO L84 FinitePrefix]: Finished finitePrefix Result has 164548 conditions, 30561 events. 11343/30561 cut-off events. For 500614/500668 co-relation queries the response was YES. Maximal size of possible extension queue 2013. Compared 381761 event pairs, 2266 based on Foata normal form. 150/30689 useless extension candidates. Maximal degree in co-relation 164419. Up to 5524 conditions per place. [2022-01-19 05:02:27,471 INFO L132 encePairwiseOnDemand]: 105/122 looper letters, 670 selfloop transitions, 543 changer transitions 192/1460 dead transitions. [2022-01-19 05:02:27,471 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 1460 transitions, 20287 flow [2022-01-19 05:02:27,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2022-01-19 05:02:27,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2022-01-19 05:02:27,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 13508 transitions. [2022-01-19 05:02:27,482 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7143310417768377 [2022-01-19 05:02:27,482 INFO L72 ComplementDD]: Start complementDD. Operand 155 states and 13508 transitions. [2022-01-19 05:02:27,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 155 states and 13508 transitions. [2022-01-19 05:02:27,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:02:27,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 155 states and 13508 transitions. [2022-01-19 05:02:27,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 156 states, 155 states have (on average 87.14838709677419) internal successors, (13508), 155 states have internal predecessors, (13508), 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 05:02:27,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 156 states, 156 states have (on average 122.0) internal successors, (19032), 156 states have internal predecessors, (19032), 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 05:02:27,517 INFO L81 ComplementDD]: Finished complementDD. Result has 156 states, 156 states have (on average 122.0) internal successors, (19032), 156 states have internal predecessors, (19032), 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 05:02:27,517 INFO L186 Difference]: Start difference. First operand has 271 places, 317 transitions, 3066 flow. Second operand 155 states and 13508 transitions. [2022-01-19 05:02:27,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 1460 transitions, 20287 flow [2022-01-19 05:02:31,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 1460 transitions, 16776 flow, removed 1746 selfloop flow, removed 25 redundant places. [2022-01-19 05:02:31,149 INFO L242 Difference]: Finished difference. Result has 473 places, 769 transitions, 10073 flow [2022-01-19 05:02:31,150 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=2749, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=155, PETRI_FLOW=10073, PETRI_PLACES=473, PETRI_TRANSITIONS=769} [2022-01-19 05:02:31,150 INFO L334 CegarLoopForPetriNet]: 100 programPoint places, 373 predicate places. [2022-01-19 05:02:31,150 INFO L470 AbstractCegarLoop]: Abstraction has has 473 places, 769 transitions, 10073 flow [2022-01-19 05:02:31,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 82.10344827586206) internal successors, (2381), 29 states have internal predecessors, (2381), 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 05:02:31,150 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:02:31,151 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:31,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-01-19 05:02:31,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:02:31,351 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 05:02:31,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:02:31,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1219135319, now seen corresponding path program 3 times [2022-01-19 05:02:31,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:02:31,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196366080] [2022-01-19 05:02:31,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:02:31,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:02:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:02:31,468 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:02:31,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:02:31,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196366080] [2022-01-19 05:02:31,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196366080] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 05:02:31,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141148426] [2022-01-19 05:02:31,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 05:02:31,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:02:31,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 05:02:31,470 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 05:02:31,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-19 05:02:31,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-19 05:02:31,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 05:02:31,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-19 05:02:31,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 05:02:31,895 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:02:31,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 05:02:32,053 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 05:02:32,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141148426] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 05:02:32,054 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 05:02:32,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 27 [2022-01-19 05:02:32,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896652395] [2022-01-19 05:02:32,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 05:02:32,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-19 05:02:32,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:02:32,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-19 05:02:32,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-01-19 05:02:32,057 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 122 [2022-01-19 05:02:32,058 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 769 transitions, 10073 flow. Second operand has 27 states, 27 states have (on average 82.11111111111111) internal successors, (2217), 27 states have internal predecessors, (2217), 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 05:02:32,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:02:32,059 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 122 [2022-01-19 05:02:32,059 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:02:44,252 INFO L129 PetriNetUnfolder]: 12345/35690 cut-off events. [2022-01-19 05:02:44,252 INFO L130 PetriNetUnfolder]: For 1947145/1947210 co-relation queries the response was YES. [2022-01-19 05:02:45,313 INFO L84 FinitePrefix]: Finished finitePrefix Result has 283940 conditions, 35690 events. 12345/35690 cut-off events. For 1947145/1947210 co-relation queries the response was YES. Maximal size of possible extension queue 2370. Compared 473962 event pairs, 1600 based on Foata normal form. 199/35887 useless extension candidates. Maximal degree in co-relation 283737. Up to 6055 conditions per place. [2022-01-19 05:02:45,491 INFO L132 encePairwiseOnDemand]: 105/122 looper letters, 302 selfloop transitions, 874 changer transitions 122/1353 dead transitions. [2022-01-19 05:02:45,492 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 1353 transitions, 22670 flow [2022-01-19 05:02:45,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-19 05:02:45,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2022-01-19 05:02:45,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 5272 transitions. [2022-01-19 05:02:45,496 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.708411717280301 [2022-01-19 05:02:45,496 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 5272 transitions. [2022-01-19 05:02:45,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 5272 transitions. [2022-01-19 05:02:45,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:02:45,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 5272 transitions. [2022-01-19 05:02:45,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 86.42622950819673) internal successors, (5272), 61 states have internal predecessors, (5272), 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 05:02:45,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 122.0) internal successors, (7564), 62 states have internal predecessors, (7564), 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 05:02:45,507 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 122.0) internal successors, (7564), 62 states have internal predecessors, (7564), 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 05:02:45,507 INFO L186 Difference]: Start difference. First operand has 473 places, 769 transitions, 10073 flow. Second operand 61 states and 5272 transitions. [2022-01-19 05:02:45,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 1353 transitions, 22670 flow [2022-01-19 05:02:58,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 1353 transitions, 18391 flow, removed 2047 selfloop flow, removed 51 redundant places. [2022-01-19 05:02:58,817 INFO L242 Difference]: Finished difference. Result has 468 places, 1029 transitions, 14943 flow [2022-01-19 05:02:58,817 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=8653, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=769, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=629, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=14943, PETRI_PLACES=468, PETRI_TRANSITIONS=1029} [2022-01-19 05:02:58,817 INFO L334 CegarLoopForPetriNet]: 100 programPoint places, 368 predicate places. [2022-01-19 05:02:58,818 INFO L470 AbstractCegarLoop]: Abstraction has has 468 places, 1029 transitions, 14943 flow [2022-01-19 05:02:58,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 82.11111111111111) internal successors, (2217), 27 states have internal predecessors, (2217), 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 05:02:58,818 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:02:58,818 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:58,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-19 05:02:59,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-01-19 05:02:59,019 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 05:02:59,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:02:59,019 INFO L85 PathProgramCache]: Analyzing trace with hash 895980963, now seen corresponding path program 4 times [2022-01-19 05:02:59,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:02:59,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591967939] [2022-01-19 05:02:59,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:02:59,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:02:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:02:59,121 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:02:59,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:02:59,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591967939] [2022-01-19 05:02:59,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591967939] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 05:02:59,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978339386] [2022-01-19 05:02:59,121 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 05:02:59,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:02:59,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 05:02:59,122 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 05:02:59,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-19 05:02:59,191 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 05:02:59,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 05:02:59,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-19 05:02:59,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 05:02:59,485 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:02:59,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 05:02:59,622 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 05:02:59,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978339386] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 05:02:59,622 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 05:02:59,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 27 [2022-01-19 05:02:59,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074470626] [2022-01-19 05:02:59,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 05:02:59,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-19 05:02:59,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:02:59,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-19 05:02:59,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2022-01-19 05:02:59,624 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 122 [2022-01-19 05:02:59,626 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 1029 transitions, 14943 flow. Second operand has 27 states, 27 states have (on average 82.11111111111111) internal successors, (2217), 27 states have internal predecessors, (2217), 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 05:02:59,626 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:02:59,626 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 122 [2022-01-19 05:02:59,626 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:03:20,234 INFO L129 PetriNetUnfolder]: 18020/59810 cut-off events. [2022-01-19 05:03:20,234 INFO L130 PetriNetUnfolder]: For 2224084/2224193 co-relation queries the response was YES. [2022-01-19 05:03:21,869 INFO L84 FinitePrefix]: Finished finitePrefix Result has 400395 conditions, 59810 events. 18020/59810 cut-off events. For 2224084/2224193 co-relation queries the response was YES. Maximal size of possible extension queue 3983. Compared 914962 event pairs, 3515 based on Foata normal form. 194/59996 useless extension candidates. Maximal degree in co-relation 400205. Up to 9356 conditions per place. [2022-01-19 05:03:22,362 INFO L132 encePairwiseOnDemand]: 105/122 looper letters, 758 selfloop transitions, 1300 changer transitions 202/2315 dead transitions. [2022-01-19 05:03:22,362 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 2315 transitions, 42054 flow [2022-01-19 05:03:22,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-01-19 05:03:22,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2022-01-19 05:03:22,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 8676 transitions. [2022-01-19 05:03:22,369 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7111475409836066 [2022-01-19 05:03:22,369 INFO L72 ComplementDD]: Start complementDD. Operand 100 states and 8676 transitions. [2022-01-19 05:03:22,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 100 states and 8676 transitions. [2022-01-19 05:03:22,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:03:22,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 100 states and 8676 transitions. [2022-01-19 05:03:22,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 101 states, 100 states have (on average 86.76) internal successors, (8676), 100 states have internal predecessors, (8676), 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 05:03:22,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 101 states, 101 states have (on average 122.0) internal successors, (12322), 101 states have internal predecessors, (12322), 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 05:03:22,387 INFO L81 ComplementDD]: Finished complementDD. Result has 101 states, 101 states have (on average 122.0) internal successors, (12322), 101 states have internal predecessors, (12322), 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 05:03:22,387 INFO L186 Difference]: Start difference. First operand has 468 places, 1029 transitions, 14943 flow. Second operand 100 states and 8676 transitions. [2022-01-19 05:03:22,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 2315 transitions, 42054 flow [2022-01-19 05:03:54,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 2315 transitions, 39617 flow, removed 1066 selfloop flow, removed 32 redundant places. [2022-01-19 05:03:55,024 INFO L242 Difference]: Finished difference. Result has 593 places, 1710 transitions, 32121 flow [2022-01-19 05:03:55,026 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=14207, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1029, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=680, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=100, PETRI_FLOW=32121, PETRI_PLACES=593, PETRI_TRANSITIONS=1710} [2022-01-19 05:03:55,026 INFO L334 CegarLoopForPetriNet]: 100 programPoint places, 493 predicate places. [2022-01-19 05:03:55,026 INFO L470 AbstractCegarLoop]: Abstraction has has 593 places, 1710 transitions, 32121 flow [2022-01-19 05:03:55,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 82.11111111111111) internal successors, (2217), 27 states have internal predecessors, (2217), 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 05:03:55,027 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:03:55,027 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:03:55,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-01-19 05:03:55,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:03:55,241 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 05:03:55,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:03:55,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1974916899, now seen corresponding path program 5 times [2022-01-19 05:03:55,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:03:55,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716061359] [2022-01-19 05:03:55,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:03:55,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:03:55,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:03:55,345 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:03:55,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:03:55,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716061359] [2022-01-19 05:03:55,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716061359] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 05:03:55,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832286835] [2022-01-19 05:03:55,346 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-19 05:03:55,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:03:55,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 05:03:55,347 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 05:03:55,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-19 05:03:55,435 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 05:03:55,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 05:03:55,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-19 05:03:55,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 05:03:55,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:03:55,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 05:03:55,831 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:03:55,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832286835] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 05:03:55,831 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 05:03:55,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2022-01-19 05:03:55,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162402604] [2022-01-19 05:03:55,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 05:03:55,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-19 05:03:55,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:03:55,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-19 05:03:55,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=706, Unknown=0, NotChecked=0, Total=812 [2022-01-19 05:03:55,834 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 122 [2022-01-19 05:03:55,835 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 1710 transitions, 32121 flow. Second operand has 29 states, 29 states have (on average 82.10344827586206) internal successors, (2381), 29 states have internal predecessors, (2381), 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 05:03:55,835 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:03:55,835 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 122 [2022-01-19 05:03:55,835 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:04:30,688 INFO L129 PetriNetUnfolder]: 20327/70823 cut-off events. [2022-01-19 05:04:30,688 INFO L130 PetriNetUnfolder]: For 4737261/4737364 co-relation queries the response was YES. [2022-01-19 05:04:33,630 INFO L84 FinitePrefix]: Finished finitePrefix Result has 593555 conditions, 70823 events. 20327/70823 cut-off events. For 4737261/4737364 co-relation queries the response was YES. Maximal size of possible extension queue 4769. Compared 1130622 event pairs, 3962 based on Foata normal form. 189/71002 useless extension candidates. Maximal degree in co-relation 593313. Up to 10779 conditions per place. [2022-01-19 05:04:34,024 INFO L132 encePairwiseOnDemand]: 105/122 looper letters, 1001 selfloop transitions, 1273 changer transitions 88/2417 dead transitions. [2022-01-19 05:04:34,024 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 2417 transitions, 53002 flow [2022-01-19 05:04:34,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-19 05:04:34,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2022-01-19 05:04:34,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 5692 transitions. [2022-01-19 05:04:34,028 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.717780580075662 [2022-01-19 05:04:34,028 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 5692 transitions. [2022-01-19 05:04:34,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 5692 transitions. [2022-01-19 05:04:34,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:04:34,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 5692 transitions. [2022-01-19 05:04:34,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 87.56923076923077) internal successors, (5692), 65 states have internal predecessors, (5692), 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 05:04:34,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 122.0) internal successors, (8052), 66 states have internal predecessors, (8052), 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 05:04:34,041 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 122.0) internal successors, (8052), 66 states have internal predecessors, (8052), 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 05:04:34,041 INFO L186 Difference]: Start difference. First operand has 593 places, 1710 transitions, 32121 flow. Second operand 65 states and 5692 transitions. [2022-01-19 05:04:34,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 2417 transitions, 53002 flow [2022-01-19 05:05:37,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 2417 transitions, 46934 flow, removed 2770 selfloop flow, removed 51 redundant places. [2022-01-19 05:05:37,424 INFO L242 Difference]: Finished difference. Result has 591 places, 1981 transitions, 39212 flow [2022-01-19 05:05:37,426 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=29867, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1004, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=700, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=39212, PETRI_PLACES=591, PETRI_TRANSITIONS=1981} [2022-01-19 05:05:37,426 INFO L334 CegarLoopForPetriNet]: 100 programPoint places, 491 predicate places. [2022-01-19 05:05:37,426 INFO L470 AbstractCegarLoop]: Abstraction has has 591 places, 1981 transitions, 39212 flow [2022-01-19 05:05:37,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 82.10344827586206) internal successors, (2381), 29 states have internal predecessors, (2381), 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 05:05:37,427 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:05:37,427 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:05:37,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-19 05:05:37,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:05:37,636 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 05:05:37,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:05:37,636 INFO L85 PathProgramCache]: Analyzing trace with hash 830848761, now seen corresponding path program 1 times [2022-01-19 05:05:37,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:05:37,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152539977] [2022-01-19 05:05:37,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:05:37,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:05:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:05:37,711 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-19 05:05:37,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:05:37,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152539977] [2022-01-19 05:05:37,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152539977] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 05:05:37,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144539681] [2022-01-19 05:05:37,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:05:37,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:05:37,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 05:05:37,713 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 05:05:37,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-19 05:05:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:05:37,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-19 05:05:37,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 05:05:38,033 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:05:38,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 05:05:38,208 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:05:38,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144539681] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 05:05:38,209 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 05:05:38,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 29 [2022-01-19 05:05:38,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680434913] [2022-01-19 05:05:38,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 05:05:38,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-19 05:05:38,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:05:38,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-19 05:05:38,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=687, Unknown=0, NotChecked=0, Total=812 [2022-01-19 05:05:38,212 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 122 [2022-01-19 05:05:38,213 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 1981 transitions, 39212 flow. Second operand has 29 states, 29 states have (on average 83.41379310344827) internal successors, (2419), 29 states have internal predecessors, (2419), 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 05:05:38,213 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:05:38,213 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 122 [2022-01-19 05:05:38,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:06:17,881 INFO L129 PetriNetUnfolder]: 20635/74605 cut-off events. [2022-01-19 05:06:17,881 INFO L130 PetriNetUnfolder]: For 4029253/4029392 co-relation queries the response was YES. [2022-01-19 05:06:20,864 INFO L84 FinitePrefix]: Finished finitePrefix Result has 576500 conditions, 74605 events. 20635/74605 cut-off events. For 4029253/4029392 co-relation queries the response was YES. Maximal size of possible extension queue 5700. Compared 1227747 event pairs, 5399 based on Foata normal form. 2128/76713 useless extension candidates. Maximal degree in co-relation 576266. Up to 19426 conditions per place. [2022-01-19 05:06:21,112 INFO L132 encePairwiseOnDemand]: 106/122 looper letters, 1702 selfloop transitions, 368 changer transitions 2780/4906 dead transitions. [2022-01-19 05:06:21,112 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 4906 transitions, 113152 flow [2022-01-19 05:06:21,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 05:06:21,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 05:06:21,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2477 transitions. [2022-01-19 05:06:21,114 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7251170960187353 [2022-01-19 05:06:21,114 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2477 transitions. [2022-01-19 05:06:21,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2477 transitions. [2022-01-19 05:06:21,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:06:21,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2477 transitions. [2022-01-19 05:06:21,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 88.46428571428571) internal successors, (2477), 28 states have internal predecessors, (2477), 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 05:06:21,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 122.0) internal successors, (3538), 29 states have internal predecessors, (3538), 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 05:06:21,118 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 122.0) internal successors, (3538), 29 states have internal predecessors, (3538), 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 05:06:21,118 INFO L186 Difference]: Start difference. First operand has 591 places, 1981 transitions, 39212 flow. Second operand 28 states and 2477 transitions. [2022-01-19 05:06:21,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 4906 transitions, 113152 flow [2022-01-19 05:07:51,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 4906 transitions, 106628 flow, removed 1038 selfloop flow, removed 30 redundant places. [2022-01-19 05:07:51,856 INFO L242 Difference]: Finished difference. Result has 596 places, 1986 transitions, 38528 flow [2022-01-19 05:07:51,857 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=36702, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1981, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1746, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=38528, PETRI_PLACES=596, PETRI_TRANSITIONS=1986} [2022-01-19 05:07:51,858 INFO L334 CegarLoopForPetriNet]: 100 programPoint places, 496 predicate places. [2022-01-19 05:07:51,858 INFO L470 AbstractCegarLoop]: Abstraction has has 596 places, 1986 transitions, 38528 flow [2022-01-19 05:07:51,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 83.41379310344827) internal successors, (2419), 29 states have internal predecessors, (2419), 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 05:07:51,858 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:07:51,859 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:07:51,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-01-19 05:07:52,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-01-19 05:07:52,059 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 05:07:52,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:07:52,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1770422659, now seen corresponding path program 1 times [2022-01-19 05:07:52,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:07:52,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399131231] [2022-01-19 05:07:52,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:07:52,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:07:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:07:52,174 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:07:52,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:07:52,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399131231] [2022-01-19 05:07:52,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399131231] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 05:07:52,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110717394] [2022-01-19 05:07:52,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:07:52,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:07:52,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 05:07:52,176 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 05:07:52,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-19 05:07:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:07:52,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-19 05:07:52,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 05:07:52,554 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:07:52,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 05:07:52,774 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-19 05:07:52,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110717394] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 05:07:52,775 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 05:07:52,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 36 [2022-01-19 05:07:52,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222313876] [2022-01-19 05:07:52,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 05:07:52,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-19 05:07:52,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:07:52,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-19 05:07:52,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1131, Unknown=0, NotChecked=0, Total=1260 [2022-01-19 05:07:52,777 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 122 [2022-01-19 05:07:52,778 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 1986 transitions, 38528 flow. Second operand has 36 states, 36 states have (on average 82.22222222222223) internal successors, (2960), 36 states have internal predecessors, (2960), 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 05:07:52,778 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:07:52,778 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 122 [2022-01-19 05:07:52,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:08:25,072 INFO L129 PetriNetUnfolder]: 14141/57963 cut-off events. [2022-01-19 05:08:25,072 INFO L130 PetriNetUnfolder]: For 3141827/3142008 co-relation queries the response was YES. [2022-01-19 05:08:27,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 428961 conditions, 57963 events. 14141/57963 cut-off events. For 3141827/3142008 co-relation queries the response was YES. Maximal size of possible extension queue 4143. Compared 953406 event pairs, 1264 based on Foata normal form. 1302/59257 useless extension candidates. Maximal degree in co-relation 428723. Up to 6889 conditions per place. [2022-01-19 05:08:28,009 INFO L132 encePairwiseOnDemand]: 105/122 looper letters, 895 selfloop transitions, 1596 changer transitions 1897/4443 dead transitions. [2022-01-19 05:08:28,009 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 715 places, 4443 transitions, 101047 flow [2022-01-19 05:08:28,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-01-19 05:08:28,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2022-01-19 05:08:28,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 10895 transitions. [2022-01-19 05:08:28,014 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6976818647540983 [2022-01-19 05:08:28,014 INFO L72 ComplementDD]: Start complementDD. Operand 128 states and 10895 transitions. [2022-01-19 05:08:28,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 128 states and 10895 transitions. [2022-01-19 05:08:28,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:08:28,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 128 states and 10895 transitions. [2022-01-19 05:08:28,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 129 states, 128 states have (on average 85.1171875) internal successors, (10895), 128 states have internal predecessors, (10895), 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 05:08:28,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 129 states, 129 states have (on average 122.0) internal successors, (15738), 129 states have internal predecessors, (15738), 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 05:08:28,032 INFO L81 ComplementDD]: Finished complementDD. Result has 129 states, 129 states have (on average 122.0) internal successors, (15738), 129 states have internal predecessors, (15738), 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 05:08:28,032 INFO L186 Difference]: Start difference. First operand has 596 places, 1986 transitions, 38528 flow. Second operand 128 states and 10895 transitions. [2022-01-19 05:08:28,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 715 places, 4443 transitions, 101047 flow [2022-01-19 05:09:17,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 702 places, 4443 transitions, 96632 flow, removed 2041 selfloop flow, removed 13 redundant places. [2022-01-19 05:09:17,883 INFO L242 Difference]: Finished difference. Result has 776 places, 2249 transitions, 45713 flow [2022-01-19 05:09:17,885 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=37063, PETRI_DIFFERENCE_MINUEND_PLACES=575, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1986, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=782, PETRI_DIFFERENCE_SUBTRAHEND_STATES=128, PETRI_FLOW=45713, PETRI_PLACES=776, PETRI_TRANSITIONS=2249} [2022-01-19 05:09:17,885 INFO L334 CegarLoopForPetriNet]: 100 programPoint places, 676 predicate places. [2022-01-19 05:09:17,886 INFO L470 AbstractCegarLoop]: Abstraction has has 776 places, 2249 transitions, 45713 flow [2022-01-19 05:09:17,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 82.22222222222223) internal successors, (2960), 36 states have internal predecessors, (2960), 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 05:09:17,886 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:09:17,886 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:09:17,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-19 05:09:18,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:09:18,111 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 05:09:18,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:09:18,112 INFO L85 PathProgramCache]: Analyzing trace with hash 389127129, now seen corresponding path program 2 times [2022-01-19 05:09:18,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:09:18,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073211765] [2022-01-19 05:09:18,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:09:18,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:09:18,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:09:18,221 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-19 05:09:18,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:09:18,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073211765] [2022-01-19 05:09:18,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073211765] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 05:09:18,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497829684] [2022-01-19 05:09:18,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 05:09:18,222 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:09:18,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 05:09:18,223 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 05:09:18,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-19 05:09:18,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 05:09:18,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 05:09:18,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-19 05:09:18,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 05:09:18,579 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:09:18,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 05:09:18,764 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:09:18,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497829684] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 05:09:18,764 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 05:09:18,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 34 [2022-01-19 05:09:18,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270203405] [2022-01-19 05:09:18,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 05:09:18,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-19 05:09:18,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:09:18,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-19 05:09:18,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=976, Unknown=0, NotChecked=0, Total=1122 [2022-01-19 05:09:18,767 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 122 [2022-01-19 05:09:18,768 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 776 places, 2249 transitions, 45713 flow. Second operand has 34 states, 34 states have (on average 82.3529411764706) internal successors, (2800), 34 states have internal predecessors, (2800), 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 05:09:18,768 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:09:18,768 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 122 [2022-01-19 05:09:18,768 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:09:46,456 INFO L129 PetriNetUnfolder]: 10525/44280 cut-off events. [2022-01-19 05:09:46,457 INFO L130 PetriNetUnfolder]: For 3197852/3198003 co-relation queries the response was YES. [2022-01-19 05:09:49,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 368162 conditions, 44280 events. 10525/44280 cut-off events. For 3197852/3198003 co-relation queries the response was YES. Maximal size of possible extension queue 2962. Compared 706654 event pairs, 2055 based on Foata normal form. 222/44488 useless extension candidates. Maximal degree in co-relation 367856. Up to 6779 conditions per place. [2022-01-19 05:09:49,683 INFO L132 encePairwiseOnDemand]: 105/122 looper letters, 1425 selfloop transitions, 1326 changer transitions 309/3115 dead transitions. [2022-01-19 05:09:49,683 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 802 places, 3115 transitions, 72479 flow [2022-01-19 05:09:49,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-19 05:09:49,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2022-01-19 05:09:49,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 6396 transitions. [2022-01-19 05:09:49,686 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7084625609215773 [2022-01-19 05:09:49,686 INFO L72 ComplementDD]: Start complementDD. Operand 74 states and 6396 transitions. [2022-01-19 05:09:49,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 6396 transitions. [2022-01-19 05:09:49,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:09:49,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 74 states and 6396 transitions. [2022-01-19 05:09:49,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 75 states, 74 states have (on average 86.43243243243244) internal successors, (6396), 74 states have internal predecessors, (6396), 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 05:09:49,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 75 states, 75 states have (on average 122.0) internal successors, (9150), 75 states have internal predecessors, (9150), 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 05:09:49,696 INFO L81 ComplementDD]: Finished complementDD. Result has 75 states, 75 states have (on average 122.0) internal successors, (9150), 75 states have internal predecessors, (9150), 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 05:09:49,696 INFO L186 Difference]: Start difference. First operand has 776 places, 2249 transitions, 45713 flow. Second operand 74 states and 6396 transitions. [2022-01-19 05:09:49,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 802 places, 3115 transitions, 72479 flow [2022-01-19 05:10:35,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 716 places, 3115 transitions, 63458 flow, removed 3314 selfloop flow, removed 86 redundant places. [2022-01-19 05:10:35,239 INFO L242 Difference]: Finished difference. Result has 732 places, 2410 transitions, 47150 flow [2022-01-19 05:10:35,241 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=40384, PETRI_DIFFERENCE_MINUEND_PLACES=643, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=74, PETRI_FLOW=47150, PETRI_PLACES=732, PETRI_TRANSITIONS=2410} [2022-01-19 05:10:35,241 INFO L334 CegarLoopForPetriNet]: 100 programPoint places, 632 predicate places. [2022-01-19 05:10:35,242 INFO L470 AbstractCegarLoop]: Abstraction has has 732 places, 2410 transitions, 47150 flow [2022-01-19 05:10:35,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 82.3529411764706) internal successors, (2800), 34 states have internal predecessors, (2800), 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 05:10:35,242 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:10:35,242 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:10:35,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-19 05:10:35,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:10:35,443 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 05:10:35,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:10:35,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1298445925, now seen corresponding path program 1 times [2022-01-19 05:10:35,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:10:35,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075388128] [2022-01-19 05:10:35,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:10:35,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:10:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:10:35,555 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:10:35,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:10:35,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075388128] [2022-01-19 05:10:35,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075388128] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 05:10:35,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797283935] [2022-01-19 05:10:35,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:10:35,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:10:35,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 05:10:35,557 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 05:10:35,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-19 05:10:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:10:35,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-19 05:10:35,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 05:10:35,941 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:10:35,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 05:10:36,137 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:10:36,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797283935] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 05:10:36,138 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 05:10:36,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 34 [2022-01-19 05:10:36,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261934924] [2022-01-19 05:10:36,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 05:10:36,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-19 05:10:36,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:10:36,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-19 05:10:36,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=996, Unknown=0, NotChecked=0, Total=1122 [2022-01-19 05:10:36,141 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 122 [2022-01-19 05:10:36,142 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 732 places, 2410 transitions, 47150 flow. Second operand has 34 states, 34 states have (on average 82.3529411764706) internal successors, (2800), 34 states have internal predecessors, (2800), 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 05:10:36,142 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:10:36,142 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 122 [2022-01-19 05:10:36,142 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:11:15,042 INFO L129 PetriNetUnfolder]: 15953/64199 cut-off events. [2022-01-19 05:11:15,042 INFO L130 PetriNetUnfolder]: For 3291608/3291754 co-relation queries the response was YES. [2022-01-19 05:11:18,447 INFO L84 FinitePrefix]: Finished finitePrefix Result has 466170 conditions, 64199 events. 15953/64199 cut-off events. For 3291608/3291754 co-relation queries the response was YES. Maximal size of possible extension queue 4543. Compared 1062750 event pairs, 2664 based on Foata normal form. 1133/65318 useless extension candidates. Maximal degree in co-relation 465908. Up to 7557 conditions per place. [2022-01-19 05:11:18,917 INFO L132 encePairwiseOnDemand]: 105/122 looper letters, 1696 selfloop transitions, 1067 changer transitions 2747/5565 dead transitions. [2022-01-19 05:11:18,918 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 819 places, 5565 transitions, 133123 flow [2022-01-19 05:11:18,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-01-19 05:11:18,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2022-01-19 05:11:18,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 8205 transitions. [2022-01-19 05:11:18,923 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7005635245901639 [2022-01-19 05:11:18,923 INFO L72 ComplementDD]: Start complementDD. Operand 96 states and 8205 transitions. [2022-01-19 05:11:18,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 96 states and 8205 transitions. [2022-01-19 05:11:18,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:11:18,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 96 states and 8205 transitions. [2022-01-19 05:11:18,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 97 states, 96 states have (on average 85.46875) internal successors, (8205), 96 states have internal predecessors, (8205), 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 05:11:18,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 97 states, 97 states have (on average 122.0) internal successors, (11834), 97 states have internal predecessors, (11834), 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 05:11:18,943 INFO L81 ComplementDD]: Finished complementDD. Result has 97 states, 97 states have (on average 122.0) internal successors, (11834), 97 states have internal predecessors, (11834), 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 05:11:18,944 INFO L186 Difference]: Start difference. First operand has 732 places, 2410 transitions, 47150 flow. Second operand 96 states and 8205 transitions. [2022-01-19 05:11:18,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 819 places, 5565 transitions, 133123 flow [2022-01-19 05:12:29,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 774 places, 5565 transitions, 126369 flow, removed 1915 selfloop flow, removed 45 redundant places. [2022-01-19 05:12:29,394 INFO L242 Difference]: Finished difference. Result has 841 places, 2404 transitions, 47419 flow [2022-01-19 05:12:29,396 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=44184, PETRI_DIFFERENCE_MINUEND_PLACES=679, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=658, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1700, PETRI_DIFFERENCE_SUBTRAHEND_STATES=96, PETRI_FLOW=47419, PETRI_PLACES=841, PETRI_TRANSITIONS=2404} [2022-01-19 05:12:29,396 INFO L334 CegarLoopForPetriNet]: 100 programPoint places, 741 predicate places. [2022-01-19 05:12:29,396 INFO L470 AbstractCegarLoop]: Abstraction has has 841 places, 2404 transitions, 47419 flow [2022-01-19 05:12:29,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 82.3529411764706) internal successors, (2800), 34 states have internal predecessors, (2800), 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 05:12:29,397 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:12:29,397 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:12:29,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-01-19 05:12:29,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:12:29,603 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 05:12:29,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:12:29,604 INFO L85 PathProgramCache]: Analyzing trace with hash -489840679, now seen corresponding path program 2 times [2022-01-19 05:12:29,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:12:29,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272720721] [2022-01-19 05:12:29,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:12:29,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:12:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:12:29,689 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-19 05:12:29,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:12:29,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272720721] [2022-01-19 05:12:29,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272720721] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 05:12:29,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652768428] [2022-01-19 05:12:29,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 05:12:29,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:12:29,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 05:12:29,691 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 05:12:29,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-19 05:12:29,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 05:12:29,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 05:12:29,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-19 05:12:29,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 05:12:30,044 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:12:30,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 05:12:30,229 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:12:30,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652768428] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 05:12:30,229 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 05:12:30,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 34 [2022-01-19 05:12:30,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283973035] [2022-01-19 05:12:30,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 05:12:30,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-19 05:12:30,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:12:30,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-19 05:12:30,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=976, Unknown=0, NotChecked=0, Total=1122 [2022-01-19 05:12:30,232 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 122 [2022-01-19 05:12:30,233 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 841 places, 2404 transitions, 47419 flow. Second operand has 34 states, 34 states have (on average 82.3529411764706) internal successors, (2800), 34 states have internal predecessors, (2800), 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 05:12:30,233 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:12:30,233 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 122 [2022-01-19 05:12:30,234 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:12:59,818 INFO L129 PetriNetUnfolder]: 11508/46841 cut-off events. [2022-01-19 05:12:59,818 INFO L130 PetriNetUnfolder]: For 3601115/3601255 co-relation queries the response was YES. [2022-01-19 05:13:02,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 383829 conditions, 46841 events. 11508/46841 cut-off events. For 3601115/3601255 co-relation queries the response was YES. Maximal size of possible extension queue 3329. Compared 750304 event pairs, 2607 based on Foata normal form. 466/47293 useless extension candidates. Maximal degree in co-relation 383512. Up to 7557 conditions per place. [2022-01-19 05:13:03,019 INFO L132 encePairwiseOnDemand]: 105/122 looper letters, 1733 selfloop transitions, 949 changer transitions 858/3595 dead transitions. [2022-01-19 05:13:03,019 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 853 places, 3595 transitions, 82297 flow [2022-01-19 05:13:03,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-19 05:13:03,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-01-19 05:13:03,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 4654 transitions. [2022-01-19 05:13:03,021 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7064359441408622 [2022-01-19 05:13:03,021 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 4654 transitions. [2022-01-19 05:13:03,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 4654 transitions. [2022-01-19 05:13:03,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:13:03,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 4654 transitions. [2022-01-19 05:13:03,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 86.18518518518519) internal successors, (4654), 54 states have internal predecessors, (4654), 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 05:13:03,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 122.0) internal successors, (6710), 55 states have internal predecessors, (6710), 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 05:13:03,027 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 122.0) internal successors, (6710), 55 states have internal predecessors, (6710), 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 05:13:03,027 INFO L186 Difference]: Start difference. First operand has 841 places, 2404 transitions, 47419 flow. Second operand 54 states and 4654 transitions. [2022-01-19 05:13:03,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 853 places, 3595 transitions, 82297 flow [2022-01-19 05:13:55,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 797 places, 3595 transitions, 75811 flow, removed 2357 selfloop flow, removed 56 redundant places. [2022-01-19 05:13:55,150 INFO L242 Difference]: Finished difference. Result has 817 places, 2406 transitions, 47512 flow [2022-01-19 05:13:55,152 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=43896, PETRI_DIFFERENCE_MINUEND_PLACES=744, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=685, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1671, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=47512, PETRI_PLACES=817, PETRI_TRANSITIONS=2406} [2022-01-19 05:13:55,152 INFO L334 CegarLoopForPetriNet]: 100 programPoint places, 717 predicate places. [2022-01-19 05:13:55,153 INFO L470 AbstractCegarLoop]: Abstraction has has 817 places, 2406 transitions, 47512 flow [2022-01-19 05:13:55,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 82.3529411764706) internal successors, (2800), 34 states have internal predecessors, (2800), 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 05:13:55,153 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:13:55,153 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:13:55,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-01-19 05:13:55,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-01-19 05:13:55,363 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 05:13:55,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:13:55,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1423677303, now seen corresponding path program 1 times [2022-01-19 05:13:55,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:13:55,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116479860] [2022-01-19 05:13:55,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:13:55,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:13:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:13:55,505 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:13:55,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:13:55,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116479860] [2022-01-19 05:13:55,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116479860] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 05:13:55,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330025354] [2022-01-19 05:13:55,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:13:55,507 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 05:13:55,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 05:13:55,508 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 05:13:55,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-19 05:13:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:13:55,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-19 05:13:55,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 05:13:55,943 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:13:55,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 05:13:56,099 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-19 05:13:56,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330025354] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 05:13:56,099 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 05:13:56,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 16] total 35 [2022-01-19 05:13:56,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741602322] [2022-01-19 05:13:56,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 05:13:56,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-19 05:13:56,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:13:56,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-19 05:13:56,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1077, Unknown=0, NotChecked=0, Total=1190 [2022-01-19 05:13:56,102 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 122 [2022-01-19 05:13:56,103 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 817 places, 2406 transitions, 47512 flow. Second operand has 35 states, 35 states have (on average 81.05714285714286) internal successors, (2837), 35 states have internal predecessors, (2837), 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 05:13:56,103 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:13:56,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 122 [2022-01-19 05:13:56,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:14:32,161 INFO L129 PetriNetUnfolder]: 12201/50256 cut-off events. [2022-01-19 05:14:32,162 INFO L130 PetriNetUnfolder]: For 3341497/3341693 co-relation queries the response was YES. [2022-01-19 05:14:35,226 INFO L84 FinitePrefix]: Finished finitePrefix Result has 386469 conditions, 50256 events. 12201/50256 cut-off events. For 3341497/3341693 co-relation queries the response was YES. Maximal size of possible extension queue 3608. Compared 815414 event pairs, 982 based on Foata normal form. 783/51031 useless extension candidates. Maximal degree in co-relation 386178. Up to 4234 conditions per place. [2022-01-19 05:14:35,397 INFO L132 encePairwiseOnDemand]: 104/122 looper letters, 1318 selfloop transitions, 1563 changer transitions 2053/4988 dead transitions. [2022-01-19 05:14:35,397 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1107 places, 4988 transitions, 109960 flow [2022-01-19 05:14:35,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 306 states. [2022-01-19 05:14:35,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2022-01-19 05:14:35,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 25502 transitions. [2022-01-19 05:14:35,409 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6831136826315225 [2022-01-19 05:14:35,409 INFO L72 ComplementDD]: Start complementDD. Operand 306 states and 25502 transitions. [2022-01-19 05:14:35,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 306 states and 25502 transitions. [2022-01-19 05:14:35,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:14:35,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 306 states and 25502 transitions. [2022-01-19 05:14:35,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 307 states, 306 states have (on average 83.33986928104575) internal successors, (25502), 306 states have internal predecessors, (25502), 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 05:14:35,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 307 states, 307 states have (on average 122.0) internal successors, (37454), 307 states have internal predecessors, (37454), 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 05:14:35,730 INFO L81 ComplementDD]: Finished complementDD. Result has 307 states, 307 states have (on average 122.0) internal successors, (37454), 307 states have internal predecessors, (37454), 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 05:14:35,731 INFO L186 Difference]: Start difference. First operand has 817 places, 2406 transitions, 47512 flow. Second operand 306 states and 25502 transitions. [2022-01-19 05:14:35,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1107 places, 4988 transitions, 109960 flow Received shutdown request... [2022-01-19 05:14:42,622 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 05:14:42,629 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 05:14:42,629 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 05:14:42,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-01-19 05:14:42,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-01-19 05:14:42,822 WARN L594 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2022-01-19 05:14:42,823 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-01-19 05:14:42,823 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-01-19 05:14:42,823 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-01-19 05:14:42,823 INFO L732 BasicCegarLoop]: Path program histogram: [5, 2, 2, 1, 1, 1, 1, 1] [2022-01-19 05:14:42,823 INFO L309 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT (1/2) [2022-01-19 05:14:42,825 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2022-01-19 05:14:42,825 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 05:14:42,825 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-19 05:14:42,825 WARN L594 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was constructing initial abstraction,while executing CegarLoopForPetriNet. [2022-01-19 05:14:42,825 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 2 remaining) [2022-01-19 05:14:42,825 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-01-19 05:14:42,826 INFO L732 BasicCegarLoop]: Path program histogram: [] [2022-01-19 05:14:42,826 INFO L309 ceAbstractionStarter]: Result for error location InUseError was TIMEOUT,TIMEOUT (2/2) [2022-01-19 05:14:42,826 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 3 thread instances [2022-01-19 05:14:42,826 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 05:14:42,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 05:14:42 BasicIcfg [2022-01-19 05:14:42,831 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 05:14:42,832 INFO L158 Benchmark]: Toolchain (without parser) took 777096.06ms. Allocated memory was 352.3MB in the beginning and 15.6GB in the end (delta: 15.2GB). Free memory was 296.8MB in the beginning and 8.3GB in the end (delta: -8.0GB). Peak memory consumption was 7.3GB. Max. memory is 16.0GB. [2022-01-19 05:14:42,832 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 352.3MB. Free memory is still 315.6MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 05:14:42,832 INFO L158 Benchmark]: CACSL2BoogieTranslator took 437.64ms. Allocated memory is still 352.3MB. Free memory was 296.6MB in the beginning and 316.2MB in the end (delta: -19.6MB). Peak memory consumption was 18.1MB. Max. memory is 16.0GB. [2022-01-19 05:14:42,832 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.13ms. Allocated memory is still 352.3MB. Free memory was 316.2MB in the beginning and 314.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 05:14:42,833 INFO L158 Benchmark]: Boogie Preprocessor took 35.28ms. Allocated memory is still 352.3MB. Free memory was 314.1MB in the beginning and 313.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 05:14:42,833 INFO L158 Benchmark]: RCFGBuilder took 317.23ms. Allocated memory is still 352.3MB. Free memory was 313.0MB in the beginning and 299.4MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-19 05:14:42,833 INFO L158 Benchmark]: TraceAbstraction took 776248.65ms. Allocated memory was 352.3MB in the beginning and 15.6GB in the end (delta: 15.2GB). Free memory was 299.4MB in the beginning and 8.3GB in the end (delta: -8.0GB). Peak memory consumption was 7.3GB. Max. memory is 16.0GB. [2022-01-19 05:14:42,834 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 352.3MB. Free memory is still 315.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 437.64ms. Allocated memory is still 352.3MB. Free memory was 296.6MB in the beginning and 316.2MB in the end (delta: -19.6MB). Peak memory consumption was 18.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 52.13ms. Allocated memory is still 352.3MB. Free memory was 316.2MB in the beginning and 314.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 35.28ms. Allocated memory is still 352.3MB. Free memory was 314.1MB in the beginning and 313.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 317.23ms. Allocated memory is still 352.3MB. Free memory was 313.0MB in the beginning and 299.4MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 776248.65ms. Allocated memory was 352.3MB in the beginning and 15.6GB in the end (delta: 15.2GB). Free memory was 299.4MB in the beginning and 8.3GB in the end (delta: -8.0GB). Peak memory consumption was 7.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 690]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 717]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was constructing initial abstraction,while executing CegarLoopForPetriNet. - TimeoutResultAtElement [Line: 715]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was constructing initial abstraction,while executing CegarLoopForPetriNet. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 99 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 133 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 133 mSDsluCounter, 106 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 87 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 186 IncrementalHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 27 mSDtfsCounter, 186 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=169occurred in iteration=1, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 317 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 119 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 20.1s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 11.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2774 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2774 mSDsluCounter, 3554 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3579 mSDsCounter, 500 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7501 IncrementalHoareTripleChecker+Invalid, 8001 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 500 mSolverCounterUnsat, 363 mSDtfsCounter, 7501 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1701 GetRequests, 1066 SyntacticMatches, 9 SemanticMatches, 626 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13014 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1278occurred in iteration=5, InterpolantAutomatonStates: 439, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 1292 NumberOfCodeBlocks, 1290 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 1862 ConstructedInterpolants, 0 QuantifiedInterpolants, 6389 SizeOfPredicates, 97 NumberOfNonLiveVariables, 1589 ConjunctsInSsa, 106 ConjunctsInUnsatCore, 29 InterpolantComputations, 2 PerfectInterpolantSequences, 9/135 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 3 thread instances CFG has 9 procedures, 139 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 754.4s, OverallIterations: 14, TraceHistogramMax: 3, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 743.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7449 SdHoareTripleChecker+Valid, 9.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7449 mSDsluCounter, 11509 SdHoareTripleChecker+Invalid, 7.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12131 mSDsCounter, 1349 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24933 IncrementalHoareTripleChecker+Invalid, 26282 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1349 mSolverCounterUnsat, 989 mSDtfsCounter, 24933 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2995 GetRequests, 1513 SyntacticMatches, 12 SemanticMatches, 1470 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89946 ImplicationChecksByTransitivity, 21.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47512occurred in iteration=13, InterpolantAutomatonStates: 896, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 1814 NumberOfCodeBlocks, 1812 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 2636 ConstructedInterpolants, 0 QuantifiedInterpolants, 9581 SizeOfPredicates, 142 NumberOfNonLiveVariables, 2279 ConjunctsInSsa, 154 ConjunctsInUnsatCore, 38 InterpolantComputations, 2 PerfectInterpolantSequences, 141/450 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 5 procedures, 99 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 7 procedures, 119 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=187occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 3 thread instances CFG has 9 procedures, 139 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown