/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-18 23:01:28,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 23:01:28,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 23:01:28,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 23:01:28,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 23:01:28,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 23:01:28,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 23:01:28,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 23:01:28,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 23:01:28,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 23:01:28,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 23:01:28,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 23:01:28,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 23:01:28,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 23:01:28,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 23:01:28,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 23:01:28,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 23:01:28,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 23:01:28,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 23:01:28,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 23:01:28,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 23:01:28,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 23:01:28,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 23:01:28,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 23:01:28,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 23:01:28,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 23:01:28,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 23:01:28,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 23:01:28,211 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-01-18 23:01:28,229 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 23:01:28,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 23:01:28,230 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 23:01:28,230 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 23:01:28,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 23:01:28,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 23:01:28,230 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 23:01:28,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 23:01:28,231 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 23:01:28,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 23:01:28,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 23:01:28,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 23:01:28,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 23:01:28,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 23:01:28,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 23:01:28,231 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 23:01:28,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 23:01:28,232 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 23:01:28,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 23:01:28,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 23:01:28,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 23:01:28,232 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 23:01:28,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 23:01:28,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 23:01:28,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 23:01:28,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 23:01:28,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 23:01:28,233 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 23:01:28,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 23:01:28,233 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 23:01:28,233 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-18 23:01:28,233 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 23:01:28,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 23:01:28,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 23:01:28,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 23:01:28,438 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 23:01:28,439 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 23:01:28,440 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i [2022-01-18 23:01:28,485 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/140c95d88/91982aaa712641acb938bd065e704d89/FLAG9a38c26e8 [2022-01-18 23:01:28,964 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 23:01:28,965 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i [2022-01-18 23:01:28,981 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/140c95d88/91982aaa712641acb938bd065e704d89/FLAG9a38c26e8 [2022-01-18 23:01:28,995 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/140c95d88/91982aaa712641acb938bd065e704d89 [2022-01-18 23:01:28,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 23:01:28,999 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 23:01:29,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 23:01:29,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 23:01:29,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 23:01:29,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 11:01:28" (1/1) ... [2022-01-18 23:01:29,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16937b58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:01:29, skipping insertion in model container [2022-01-18 23:01:29,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 11:01:28" (1/1) ... [2022-01-18 23:01:29,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 23:01:29,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 23:01:29,219 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-01-18 23:01:29,498 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i[75009,75022] [2022-01-18 23:01:29,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 23:01:29,533 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 23:01:29,540 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-01-18 23:01:29,557 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i[75009,75022] [2022-01-18 23:01:29,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 23:01:29,643 INFO L208 MainTranslator]: Completed translation [2022-01-18 23:01:29,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:01:29 WrapperNode [2022-01-18 23:01:29,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 23:01:29,644 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 23:01:29,644 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 23:01:29,644 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 23:01:29,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:01:29" (1/1) ... [2022-01-18 23:01:29,679 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:01:29" (1/1) ... [2022-01-18 23:01:29,714 INFO L137 Inliner]: procedures = 468, calls = 52, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 134 [2022-01-18 23:01:29,715 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 23:01:29,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 23:01:29,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 23:01:29,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 23:01:29,720 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:01:29" (1/1) ... [2022-01-18 23:01:29,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:01:29" (1/1) ... [2022-01-18 23:01:29,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:01:29" (1/1) ... [2022-01-18 23:01:29,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:01:29" (1/1) ... [2022-01-18 23:01:29,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:01:29" (1/1) ... [2022-01-18 23:01:29,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:01:29" (1/1) ... [2022-01-18 23:01:29,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:01:29" (1/1) ... [2022-01-18 23:01:29,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 23:01:29,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 23:01:29,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 23:01:29,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 23:01:29,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:01:29" (1/1) ... [2022-01-18 23:01:29,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 23:01:29,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 23:01:29,805 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 23:01:29,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 23:01:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 23:01:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 23:01:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 23:01:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 23:01:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 23:01:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-18 23:01:29,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 23:01:29,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 23:01:29,833 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-01-18 23:01:29,833 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-01-18 23:01:29,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 23:01:29,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 23:01:29,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 23:01:29,834 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 23:01:30,095 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 23:01:30,096 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 23:01:30,321 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 23:01:30,332 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 23:01:30,332 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 23:01:30,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 11:01:30 BoogieIcfgContainer [2022-01-18 23:01:30,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 23:01:30,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 23:01:30,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 23:01:30,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 23:01:30,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 11:01:28" (1/3) ... [2022-01-18 23:01:30,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6481e945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 11:01:30, skipping insertion in model container [2022-01-18 23:01:30,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:01:29" (2/3) ... [2022-01-18 23:01:30,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6481e945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 11:01:30, skipping insertion in model container [2022-01-18 23:01:30,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 11:01:30" (3/3) ... [2022-01-18 23:01:30,345 INFO L111 eAbstractionObserver]: Analyzing ICFG race-3_2-container_of-global.i [2022-01-18 23:01:30,348 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 23:01:30,348 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-01-18 23:01:30,348 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 23:01:30,385 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,385 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,385 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,385 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,385 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,385 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,386 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,386 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,386 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,386 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,386 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,386 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,386 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,387 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,387 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,387 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,387 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,387 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,387 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,387 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,387 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,387 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,388 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,388 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,388 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,388 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,388 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,388 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,388 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,389 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,389 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,389 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,389 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,389 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,389 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,389 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,389 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,389 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,390 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,390 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,390 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,390 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,390 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,390 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,390 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,391 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,391 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,391 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,391 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,391 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,391 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,391 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,391 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,391 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,392 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,392 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,392 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,392 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,392 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,392 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,392 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,392 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,392 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,392 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,393 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,393 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,393 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,393 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,393 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,393 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,393 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,393 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,394 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,394 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,394 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,394 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,394 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,394 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,394 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,394 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,394 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,395 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,395 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,395 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,395 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,395 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,395 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,395 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,396 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,396 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,396 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,396 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,398 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,398 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,398 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,398 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,398 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,398 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,399 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,399 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,399 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,399 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,399 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,400 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,400 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,400 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,400 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,400 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,400 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,400 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,400 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,400 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:01:30,402 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 23:01:30,429 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 23:01:30,433 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 23:01:30,433 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-01-18 23:01:30,441 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 184 places, 186 transitions, 388 flow [2022-01-18 23:01:30,480 INFO L129 PetriNetUnfolder]: 10/231 cut-off events. [2022-01-18 23:01:30,480 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-18 23:01:30,483 INFO L84 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 231 events. 10/231 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 336 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 137. Up to 4 conditions per place. [2022-01-18 23:01:30,483 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 186 transitions, 388 flow [2022-01-18 23:01:30,487 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 172 transitions, 356 flow [2022-01-18 23:01:30,492 INFO L129 PetriNetUnfolder]: 0/46 cut-off events. [2022-01-18 23:01:30,492 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-18 23:01:30,493 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:01:30,493 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] [2022-01-18 23:01:30,493 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:01:30,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:01:30,496 INFO L85 PathProgramCache]: Analyzing trace with hash -34102460, now seen corresponding path program 1 times [2022-01-18 23:01:30,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:01:30,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143656599] [2022-01-18 23:01:30,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:01:30,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:01:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:01:30,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:01:30,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:01:30,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143656599] [2022-01-18 23:01:30,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143656599] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:01:30,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:01:30,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 23:01:30,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48935104] [2022-01-18 23:01:30,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:01:30,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 23:01:30,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:01:30,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 23:01:30,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 23:01:30,836 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 186 [2022-01-18 23:01:30,841 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 172 transitions, 356 flow. Second operand has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:30,841 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:01:30,841 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 186 [2022-01-18 23:01:30,842 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:01:31,167 INFO L129 PetriNetUnfolder]: 361/965 cut-off events. [2022-01-18 23:01:31,167 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-01-18 23:01:31,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1656 conditions, 965 events. 361/965 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5057 event pairs, 216 based on Foata normal form. 20/933 useless extension candidates. Maximal degree in co-relation 1409. Up to 397 conditions per place. [2022-01-18 23:01:31,177 INFO L132 encePairwiseOnDemand]: 164/186 looper letters, 53 selfloop transitions, 17 changer transitions 1/168 dead transitions. [2022-01-18 23:01:31,177 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 168 transitions, 490 flow [2022-01-18 23:01:31,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 23:01:31,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-18 23:01:31,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1057 transitions. [2022-01-18 23:01:31,192 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6314217443249701 [2022-01-18 23:01:31,192 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1057 transitions. [2022-01-18 23:01:31,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1057 transitions. [2022-01-18 23:01:31,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:01:31,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1057 transitions. [2022-01-18 23:01:31,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 117.44444444444444) internal successors, (1057), 9 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:31,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:31,209 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:31,210 INFO L186 Difference]: Start difference. First operand has 172 places, 172 transitions, 356 flow. Second operand 9 states and 1057 transitions. [2022-01-18 23:01:31,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 168 transitions, 490 flow [2022-01-18 23:01:31,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 168 transitions, 482 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-18 23:01:31,219 INFO L242 Difference]: Finished difference. Result has 170 places, 161 transitions, 367 flow [2022-01-18 23:01:31,220 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=367, PETRI_PLACES=170, PETRI_TRANSITIONS=161} [2022-01-18 23:01:31,224 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, -2 predicate places. [2022-01-18 23:01:31,224 INFO L470 AbstractCegarLoop]: Abstraction has has 170 places, 161 transitions, 367 flow [2022-01-18 23:01:31,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:31,225 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:01:31,225 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] [2022-01-18 23:01:31,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 23:01:31,226 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:01:31,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:01:31,227 INFO L85 PathProgramCache]: Analyzing trace with hash -888642596, now seen corresponding path program 1 times [2022-01-18 23:01:31,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:01:31,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285662235] [2022-01-18 23:01:31,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:01:31,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:01:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:01:31,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:01:31,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:01:31,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285662235] [2022-01-18 23:01:31,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285662235] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:01:31,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:01:31,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 23:01:31,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622048252] [2022-01-18 23:01:31,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:01:31,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 23:01:31,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:01:31,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 23:01:31,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 23:01:31,371 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 186 [2022-01-18 23:01:31,372 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 161 transitions, 367 flow. Second operand has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:31,372 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:01:31,372 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 186 [2022-01-18 23:01:31,372 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:01:31,575 INFO L129 PetriNetUnfolder]: 361/971 cut-off events. [2022-01-18 23:01:31,575 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-01-18 23:01:31,577 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1739 conditions, 971 events. 361/971 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5044 event pairs, 120 based on Foata normal form. 1/940 useless extension candidates. Maximal degree in co-relation 694. Up to 261 conditions per place. [2022-01-18 23:01:31,581 INFO L132 encePairwiseOnDemand]: 167/186 looper letters, 61 selfloop transitions, 18 changer transitions 1/176 dead transitions. [2022-01-18 23:01:31,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 176 transitions, 559 flow [2022-01-18 23:01:31,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 23:01:31,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-18 23:01:31,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1171 transitions. [2022-01-18 23:01:31,584 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6295698924731182 [2022-01-18 23:01:31,584 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1171 transitions. [2022-01-18 23:01:31,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1171 transitions. [2022-01-18 23:01:31,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:01:31,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1171 transitions. [2022-01-18 23:01:31,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 117.1) internal successors, (1171), 10 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:31,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 186.0) internal successors, (2046), 11 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:31,591 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 186.0) internal successors, (2046), 11 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:31,591 INFO L186 Difference]: Start difference. First operand has 170 places, 161 transitions, 367 flow. Second operand 10 states and 1171 transitions. [2022-01-18 23:01:31,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 176 transitions, 559 flow [2022-01-18 23:01:31,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 176 transitions, 530 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-01-18 23:01:31,604 INFO L242 Difference]: Finished difference. Result has 171 places, 160 transitions, 378 flow [2022-01-18 23:01:31,605 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=378, PETRI_PLACES=171, PETRI_TRANSITIONS=160} [2022-01-18 23:01:31,607 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, -1 predicate places. [2022-01-18 23:01:31,607 INFO L470 AbstractCegarLoop]: Abstraction has has 171 places, 160 transitions, 378 flow [2022-01-18 23:01:31,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:31,607 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:01:31,607 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:01:31,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 23:01:31,608 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:01:31,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:01:31,609 INFO L85 PathProgramCache]: Analyzing trace with hash -170107804, now seen corresponding path program 1 times [2022-01-18 23:01:31,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:01:31,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473904037] [2022-01-18 23:01:31,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:01:31,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:01:31,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:01:31,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:01:31,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:01:31,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473904037] [2022-01-18 23:01:31,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473904037] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:01:31,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:01:31,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 23:01:31,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137321177] [2022-01-18 23:01:31,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:01:31,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 23:01:31,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:01:31,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 23:01:31,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 23:01:31,768 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 186 [2022-01-18 23:01:31,769 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 160 transitions, 378 flow. Second operand has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:31,769 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:01:31,769 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 186 [2022-01-18 23:01:31,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:01:32,168 INFO L129 PetriNetUnfolder]: 832/1931 cut-off events. [2022-01-18 23:01:32,168 INFO L130 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2022-01-18 23:01:32,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3674 conditions, 1931 events. 832/1931 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 11817 event pairs, 169 based on Foata normal form. 32/1930 useless extension candidates. Maximal degree in co-relation 968. Up to 499 conditions per place. [2022-01-18 23:01:32,178 INFO L132 encePairwiseOnDemand]: 165/186 looper letters, 100 selfloop transitions, 49 changer transitions 0/245 dead transitions. [2022-01-18 23:01:32,178 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 245 transitions, 862 flow [2022-01-18 23:01:32,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 23:01:32,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-18 23:01:32,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1540 transitions. [2022-01-18 23:01:32,181 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6368899917287014 [2022-01-18 23:01:32,181 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1540 transitions. [2022-01-18 23:01:32,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1540 transitions. [2022-01-18 23:01:32,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:01:32,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1540 transitions. [2022-01-18 23:01:32,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 118.46153846153847) internal successors, (1540), 13 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:32,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 186.0) internal successors, (2604), 14 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:32,188 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 186.0) internal successors, (2604), 14 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:32,189 INFO L186 Difference]: Start difference. First operand has 171 places, 160 transitions, 378 flow. Second operand 13 states and 1540 transitions. [2022-01-18 23:01:32,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 245 transitions, 862 flow [2022-01-18 23:01:32,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 245 transitions, 816 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-01-18 23:01:32,197 INFO L242 Difference]: Finished difference. Result has 183 places, 197 transitions, 648 flow [2022-01-18 23:01:32,197 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=648, PETRI_PLACES=183, PETRI_TRANSITIONS=197} [2022-01-18 23:01:32,198 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 11 predicate places. [2022-01-18 23:01:32,199 INFO L470 AbstractCegarLoop]: Abstraction has has 183 places, 197 transitions, 648 flow [2022-01-18 23:01:32,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:32,199 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:01:32,199 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:01:32,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 23:01:32,200 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:01:32,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:01:32,200 INFO L85 PathProgramCache]: Analyzing trace with hash 896697388, now seen corresponding path program 1 times [2022-01-18 23:01:32,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:01:32,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817835247] [2022-01-18 23:01:32,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:01:32,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:01:32,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:01:32,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:01:32,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:01:32,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817835247] [2022-01-18 23:01:32,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817835247] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:01:32,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:01:32,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 23:01:32,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061407274] [2022-01-18 23:01:32,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:01:32,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 23:01:32,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:01:32,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 23:01:32,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 23:01:32,281 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 186 [2022-01-18 23:01:32,282 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 197 transitions, 648 flow. Second operand has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:32,282 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:01:32,282 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 186 [2022-01-18 23:01:32,282 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:01:32,673 INFO L129 PetriNetUnfolder]: 1085/2496 cut-off events. [2022-01-18 23:01:32,674 INFO L130 PetriNetUnfolder]: For 10877/10945 co-relation queries the response was YES. [2022-01-18 23:01:32,678 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8992 conditions, 2496 events. 1085/2496 cut-off events. For 10877/10945 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 16659 event pairs, 218 based on Foata normal form. 47/2510 useless extension candidates. Maximal degree in co-relation 7714. Up to 732 conditions per place. [2022-01-18 23:01:32,687 INFO L132 encePairwiseOnDemand]: 167/186 looper letters, 74 selfloop transitions, 48 changer transitions 69/286 dead transitions. [2022-01-18 23:01:32,687 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 286 transitions, 1732 flow [2022-01-18 23:01:32,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 23:01:32,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-18 23:01:32,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1307 transitions. [2022-01-18 23:01:32,690 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6388074291300098 [2022-01-18 23:01:32,690 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1307 transitions. [2022-01-18 23:01:32,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1307 transitions. [2022-01-18 23:01:32,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:01:32,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1307 transitions. [2022-01-18 23:01:32,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 118.81818181818181) internal successors, (1307), 11 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:32,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 186.0) internal successors, (2232), 12 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:32,695 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 186.0) internal successors, (2232), 12 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:32,695 INFO L186 Difference]: Start difference. First operand has 183 places, 197 transitions, 648 flow. Second operand 11 states and 1307 transitions. [2022-01-18 23:01:32,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 286 transitions, 1732 flow [2022-01-18 23:01:32,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 286 transitions, 1732 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-18 23:01:32,710 INFO L242 Difference]: Finished difference. Result has 201 places, 203 transitions, 961 flow [2022-01-18 23:01:32,710 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=961, PETRI_PLACES=201, PETRI_TRANSITIONS=203} [2022-01-18 23:01:32,711 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 29 predicate places. [2022-01-18 23:01:32,711 INFO L470 AbstractCegarLoop]: Abstraction has has 201 places, 203 transitions, 961 flow [2022-01-18 23:01:32,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:32,711 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:01:32,711 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:01:32,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 23:01:32,712 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:01:32,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:01:32,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1717393044, now seen corresponding path program 1 times [2022-01-18 23:01:32,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:01:32,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166704859] [2022-01-18 23:01:32,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:01:32,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:01:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:01:32,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:01:32,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:01:32,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166704859] [2022-01-18 23:01:32,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166704859] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:01:32,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:01:32,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 23:01:32,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951828256] [2022-01-18 23:01:32,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:01:32,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 23:01:32,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:01:32,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 23:01:32,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 23:01:32,810 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 186 [2022-01-18 23:01:32,811 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 203 transitions, 961 flow. Second operand has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:32,811 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:01:32,811 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 186 [2022-01-18 23:01:32,811 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:01:32,869 INFO L129 PetriNetUnfolder]: 47/289 cut-off events. [2022-01-18 23:01:32,870 INFO L130 PetriNetUnfolder]: For 791/871 co-relation queries the response was YES. [2022-01-18 23:01:32,871 INFO L84 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 289 events. 47/289 cut-off events. For 791/871 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 972 event pairs, 11 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 633. Up to 31 conditions per place. [2022-01-18 23:01:32,872 INFO L132 encePairwiseOnDemand]: 181/186 looper letters, 19 selfloop transitions, 4 changer transitions 0/139 dead transitions. [2022-01-18 23:01:32,872 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 139 transitions, 456 flow [2022-01-18 23:01:32,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 23:01:32,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-18 23:01:32,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 966 transitions. [2022-01-18 23:01:32,874 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8655913978494624 [2022-01-18 23:01:32,874 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 966 transitions. [2022-01-18 23:01:32,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 966 transitions. [2022-01-18 23:01:32,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:01:32,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 966 transitions. [2022-01-18 23:01:32,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:32,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:32,877 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:32,878 INFO L186 Difference]: Start difference. First operand has 201 places, 203 transitions, 961 flow. Second operand 6 states and 966 transitions. [2022-01-18 23:01:32,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 139 transitions, 456 flow [2022-01-18 23:01:32,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 139 transitions, 336 flow, removed 40 selfloop flow, removed 19 redundant places. [2022-01-18 23:01:32,881 INFO L242 Difference]: Finished difference. Result has 144 places, 131 transitions, 282 flow [2022-01-18 23:01:32,881 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=282, PETRI_PLACES=144, PETRI_TRANSITIONS=131} [2022-01-18 23:01:32,883 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, -28 predicate places. [2022-01-18 23:01:32,883 INFO L470 AbstractCegarLoop]: Abstraction has has 144 places, 131 transitions, 282 flow [2022-01-18 23:01:32,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:32,883 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:01:32,883 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:01:32,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 23:01:32,884 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:01:32,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:01:32,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1971603667, now seen corresponding path program 1 times [2022-01-18 23:01:32,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:01:32,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854431372] [2022-01-18 23:01:32,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:01:32,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:01:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:01:33,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:01:33,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:01:33,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854431372] [2022-01-18 23:01:33,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854431372] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:01:33,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:01:33,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 23:01:33,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188565054] [2022-01-18 23:01:33,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:01:33,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 23:01:33,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:01:33,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 23:01:33,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-01-18 23:01:33,624 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:01:33,626 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 131 transitions, 282 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:33,626 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:01:33,626 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:01:33,626 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:01:35,226 INFO L129 PetriNetUnfolder]: 600/1448 cut-off events. [2022-01-18 23:01:35,226 INFO L130 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2022-01-18 23:01:35,229 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2905 conditions, 1448 events. 600/1448 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 8004 event pairs, 125 based on Foata normal form. 0/1408 useless extension candidates. Maximal degree in co-relation 2897. Up to 269 conditions per place. [2022-01-18 23:01:35,233 INFO L132 encePairwiseOnDemand]: 159/186 looper letters, 142 selfloop transitions, 42 changer transitions 0/247 dead transitions. [2022-01-18 23:01:35,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 247 transitions, 927 flow [2022-01-18 23:01:35,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 23:01:35,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-01-18 23:01:35,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2448 transitions. [2022-01-18 23:01:35,237 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5062034739454094 [2022-01-18 23:01:35,237 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2448 transitions. [2022-01-18 23:01:35,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2448 transitions. [2022-01-18 23:01:35,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:01:35,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2448 transitions. [2022-01-18 23:01:35,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 94.15384615384616) internal successors, (2448), 26 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:35,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 186.0) internal successors, (5022), 27 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:35,247 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 186.0) internal successors, (5022), 27 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:35,247 INFO L186 Difference]: Start difference. First operand has 144 places, 131 transitions, 282 flow. Second operand 26 states and 2448 transitions. [2022-01-18 23:01:35,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 247 transitions, 927 flow [2022-01-18 23:01:35,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 247 transitions, 920 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-18 23:01:35,251 INFO L242 Difference]: Finished difference. Result has 174 places, 161 transitions, 514 flow [2022-01-18 23:01:35,251 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=514, PETRI_PLACES=174, PETRI_TRANSITIONS=161} [2022-01-18 23:01:35,251 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 2 predicate places. [2022-01-18 23:01:35,251 INFO L470 AbstractCegarLoop]: Abstraction has has 174 places, 161 transitions, 514 flow [2022-01-18 23:01:35,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:35,252 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:01:35,252 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:01:35,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 23:01:35,252 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:01:35,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:01:35,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1315149385, now seen corresponding path program 2 times [2022-01-18 23:01:35,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:01:35,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834093955] [2022-01-18 23:01:35,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:01:35,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:01:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:01:35,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:01:35,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:01:35,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834093955] [2022-01-18 23:01:35,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834093955] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:01:35,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:01:35,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 23:01:35,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226217224] [2022-01-18 23:01:35,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:01:35,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 23:01:35,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:01:35,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 23:01:35,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2022-01-18 23:01:35,737 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:01:35,738 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 161 transitions, 514 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:35,738 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:01:35,738 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:01:35,738 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:01:36,911 INFO L129 PetriNetUnfolder]: 950/2367 cut-off events. [2022-01-18 23:01:36,911 INFO L130 PetriNetUnfolder]: For 1865/1885 co-relation queries the response was YES. [2022-01-18 23:01:36,917 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5943 conditions, 2367 events. 950/2367 cut-off events. For 1865/1885 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 15966 event pairs, 234 based on Foata normal form. 13/2297 useless extension candidates. Maximal degree in co-relation 5927. Up to 680 conditions per place. [2022-01-18 23:01:36,926 INFO L132 encePairwiseOnDemand]: 159/186 looper letters, 157 selfloop transitions, 52 changer transitions 0/272 dead transitions. [2022-01-18 23:01:36,926 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 272 transitions, 1410 flow [2022-01-18 23:01:36,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 23:01:36,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-18 23:01:36,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1809 transitions. [2022-01-18 23:01:36,929 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5118845500848896 [2022-01-18 23:01:36,930 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1809 transitions. [2022-01-18 23:01:36,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1809 transitions. [2022-01-18 23:01:36,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:01:36,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1809 transitions. [2022-01-18 23:01:36,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 95.21052631578948) internal successors, (1809), 19 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:36,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:36,937 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:36,938 INFO L186 Difference]: Start difference. First operand has 174 places, 161 transitions, 514 flow. Second operand 19 states and 1809 transitions. [2022-01-18 23:01:36,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 272 transitions, 1410 flow [2022-01-18 23:01:36,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 272 transitions, 1381 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-18 23:01:36,946 INFO L242 Difference]: Finished difference. Result has 195 places, 193 transitions, 875 flow [2022-01-18 23:01:36,946 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=875, PETRI_PLACES=195, PETRI_TRANSITIONS=193} [2022-01-18 23:01:36,946 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 23 predicate places. [2022-01-18 23:01:36,947 INFO L470 AbstractCegarLoop]: Abstraction has has 195 places, 193 transitions, 875 flow [2022-01-18 23:01:36,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:36,947 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:01:36,948 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:01:36,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 23:01:36,948 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:01:36,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:01:36,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1469662633, now seen corresponding path program 3 times [2022-01-18 23:01:36,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:01:36,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428623046] [2022-01-18 23:01:36,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:01:36,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:01:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:01:37,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:01:37,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:01:37,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428623046] [2022-01-18 23:01:37,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428623046] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:01:37,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:01:37,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-18 23:01:37,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683792808] [2022-01-18 23:01:37,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:01:37,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 23:01:37,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:01:37,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 23:01:37,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-01-18 23:01:37,340 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2022-01-18 23:01:37,341 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 193 transitions, 875 flow. Second operand has 16 states, 16 states have (on average 92.6875) internal successors, (1483), 16 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:37,341 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:01:37,341 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2022-01-18 23:01:37,341 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:01:38,472 INFO L129 PetriNetUnfolder]: 974/2618 cut-off events. [2022-01-18 23:01:38,472 INFO L130 PetriNetUnfolder]: For 3769/3785 co-relation queries the response was YES. [2022-01-18 23:01:38,479 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7613 conditions, 2618 events. 974/2618 cut-off events. For 3769/3785 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 19114 event pairs, 173 based on Foata normal form. 3/2566 useless extension candidates. Maximal degree in co-relation 7588. Up to 571 conditions per place. [2022-01-18 23:01:38,488 INFO L132 encePairwiseOnDemand]: 160/186 looper letters, 164 selfloop transitions, 77 changer transitions 0/308 dead transitions. [2022-01-18 23:01:38,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 308 transitions, 2042 flow [2022-01-18 23:01:38,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 23:01:38,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-18 23:01:38,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2292 transitions. [2022-01-18 23:01:38,492 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5134408602150538 [2022-01-18 23:01:38,493 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2292 transitions. [2022-01-18 23:01:38,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2292 transitions. [2022-01-18 23:01:38,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:01:38,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2292 transitions. [2022-01-18 23:01:38,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 95.5) internal successors, (2292), 24 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:38,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 186.0) internal successors, (4650), 25 states have internal predecessors, (4650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:38,502 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 186.0) internal successors, (4650), 25 states have internal predecessors, (4650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:38,502 INFO L186 Difference]: Start difference. First operand has 195 places, 193 transitions, 875 flow. Second operand 24 states and 2292 transitions. [2022-01-18 23:01:38,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 308 transitions, 2042 flow [2022-01-18 23:01:38,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 308 transitions, 2006 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-01-18 23:01:38,515 INFO L242 Difference]: Finished difference. Result has 221 places, 225 transitions, 1356 flow [2022-01-18 23:01:38,515 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=851, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1356, PETRI_PLACES=221, PETRI_TRANSITIONS=225} [2022-01-18 23:01:38,517 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 49 predicate places. [2022-01-18 23:01:38,517 INFO L470 AbstractCegarLoop]: Abstraction has has 221 places, 225 transitions, 1356 flow [2022-01-18 23:01:38,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 92.6875) internal successors, (1483), 16 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:38,517 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:01:38,517 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:01:38,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-18 23:01:38,518 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:01:38,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:01:38,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1884793419, now seen corresponding path program 4 times [2022-01-18 23:01:38,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:01:38,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353584860] [2022-01-18 23:01:38,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:01:38,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:01:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:01:38,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:01:38,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:01:38,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353584860] [2022-01-18 23:01:38,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353584860] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:01:38,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:01:38,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 23:01:38,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451876909] [2022-01-18 23:01:38,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:01:38,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 23:01:38,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:01:38,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 23:01:38,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2022-01-18 23:01:38,960 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:01:38,961 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 225 transitions, 1356 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:38,961 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:01:38,961 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:01:38,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:01:40,353 INFO L129 PetriNetUnfolder]: 1594/4539 cut-off events. [2022-01-18 23:01:40,353 INFO L130 PetriNetUnfolder]: For 10181/10193 co-relation queries the response was YES. [2022-01-18 23:01:40,372 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14153 conditions, 4539 events. 1594/4539 cut-off events. For 10181/10193 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 38176 event pairs, 655 based on Foata normal form. 14/4444 useless extension candidates. Maximal degree in co-relation 14118. Up to 1255 conditions per place. [2022-01-18 23:01:40,386 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 252 selfloop transitions, 100 changer transitions 0/415 dead transitions. [2022-01-18 23:01:40,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 415 transitions, 3554 flow [2022-01-18 23:01:40,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 23:01:40,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-18 23:01:40,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2002 transitions. [2022-01-18 23:01:40,388 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5125448028673835 [2022-01-18 23:01:40,388 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2002 transitions. [2022-01-18 23:01:40,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2002 transitions. [2022-01-18 23:01:40,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:01:40,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2002 transitions. [2022-01-18 23:01:40,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 95.33333333333333) internal successors, (2002), 21 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:40,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:40,395 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:40,395 INFO L186 Difference]: Start difference. First operand has 221 places, 225 transitions, 1356 flow. Second operand 21 states and 2002 transitions. [2022-01-18 23:01:40,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 415 transitions, 3554 flow [2022-01-18 23:01:40,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 415 transitions, 3484 flow, removed 16 selfloop flow, removed 8 redundant places. [2022-01-18 23:01:40,421 INFO L242 Difference]: Finished difference. Result has 243 places, 282 transitions, 2229 flow [2022-01-18 23:01:40,422 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=1315, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2229, PETRI_PLACES=243, PETRI_TRANSITIONS=282} [2022-01-18 23:01:40,422 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 71 predicate places. [2022-01-18 23:01:40,422 INFO L470 AbstractCegarLoop]: Abstraction has has 243 places, 282 transitions, 2229 flow [2022-01-18 23:01:40,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:40,423 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:01:40,423 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:01:40,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 23:01:40,424 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:01:40,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:01:40,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1787457561, now seen corresponding path program 5 times [2022-01-18 23:01:40,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:01:40,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777278733] [2022-01-18 23:01:40,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:01:40,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:01:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:01:40,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:01:40,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:01:40,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777278733] [2022-01-18 23:01:40,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777278733] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:01:40,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:01:40,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-18 23:01:40,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132216614] [2022-01-18 23:01:40,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:01:40,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 23:01:40,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:01:40,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 23:01:40,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-01-18 23:01:40,701 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2022-01-18 23:01:40,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 282 transitions, 2229 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:40,703 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:01:40,703 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2022-01-18 23:01:40,703 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:01:41,781 INFO L129 PetriNetUnfolder]: 1660/5051 cut-off events. [2022-01-18 23:01:41,781 INFO L130 PetriNetUnfolder]: For 14904/14959 co-relation queries the response was YES. [2022-01-18 23:01:41,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17064 conditions, 5051 events. 1660/5051 cut-off events. For 14904/14959 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 46100 event pairs, 539 based on Foata normal form. 34/4982 useless extension candidates. Maximal degree in co-relation 17019. Up to 1373 conditions per place. [2022-01-18 23:01:41,810 INFO L132 encePairwiseOnDemand]: 163/186 looper letters, 228 selfloop transitions, 115 changer transitions 0/412 dead transitions. [2022-01-18 23:01:41,810 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 412 transitions, 4060 flow [2022-01-18 23:01:41,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 23:01:41,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-18 23:01:41,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1837 transitions. [2022-01-18 23:01:41,812 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.519807583474816 [2022-01-18 23:01:41,812 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1837 transitions. [2022-01-18 23:01:41,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1837 transitions. [2022-01-18 23:01:41,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:01:41,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1837 transitions. [2022-01-18 23:01:41,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 96.6842105263158) internal successors, (1837), 19 states have internal predecessors, (1837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:41,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:41,818 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:41,818 INFO L186 Difference]: Start difference. First operand has 243 places, 282 transitions, 2229 flow. Second operand 19 states and 1837 transitions. [2022-01-18 23:01:41,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 412 transitions, 4060 flow [2022-01-18 23:01:41,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 412 transitions, 3963 flow, removed 38 selfloop flow, removed 5 redundant places. [2022-01-18 23:01:41,858 INFO L242 Difference]: Finished difference. Result has 265 places, 318 transitions, 3013 flow [2022-01-18 23:01:41,859 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=2167, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3013, PETRI_PLACES=265, PETRI_TRANSITIONS=318} [2022-01-18 23:01:41,859 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 93 predicate places. [2022-01-18 23:01:41,859 INFO L470 AbstractCegarLoop]: Abstraction has has 265 places, 318 transitions, 3013 flow [2022-01-18 23:01:41,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:41,860 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:01:41,860 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:01:41,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-18 23:01:41,860 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:01:41,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:01:41,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1670441307, now seen corresponding path program 6 times [2022-01-18 23:01:41,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:01:41,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541465135] [2022-01-18 23:01:41,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:01:41,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:01:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:01:42,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:01:42,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:01:42,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541465135] [2022-01-18 23:01:42,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541465135] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:01:42,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:01:42,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-18 23:01:42,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089716648] [2022-01-18 23:01:42,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:01:42,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 23:01:42,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:01:42,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 23:01:42,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-01-18 23:01:42,141 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2022-01-18 23:01:42,142 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 318 transitions, 3013 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:42,142 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:01:42,142 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2022-01-18 23:01:42,142 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:01:43,299 INFO L129 PetriNetUnfolder]: 1666/5263 cut-off events. [2022-01-18 23:01:43,299 INFO L130 PetriNetUnfolder]: For 20345/20382 co-relation queries the response was YES. [2022-01-18 23:01:43,323 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18534 conditions, 5263 events. 1666/5263 cut-off events. For 20345/20382 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 48321 event pairs, 820 based on Foata normal form. 28/5177 useless extension candidates. Maximal degree in co-relation 18479. Up to 2082 conditions per place. [2022-01-18 23:01:43,336 INFO L132 encePairwiseOnDemand]: 164/186 looper letters, 199 selfloop transitions, 148 changer transitions 0/416 dead transitions. [2022-01-18 23:01:43,336 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 416 transitions, 4594 flow [2022-01-18 23:01:43,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 23:01:43,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-18 23:01:43,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1728 transitions. [2022-01-18 23:01:43,338 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2022-01-18 23:01:43,338 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1728 transitions. [2022-01-18 23:01:43,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1728 transitions. [2022-01-18 23:01:43,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:01:43,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1728 transitions. [2022-01-18 23:01:43,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 96.0) internal successors, (1728), 18 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:43,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 186.0) internal successors, (3534), 19 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:43,343 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 186.0) internal successors, (3534), 19 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:43,343 INFO L186 Difference]: Start difference. First operand has 265 places, 318 transitions, 3013 flow. Second operand 18 states and 1728 transitions. [2022-01-18 23:01:43,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 416 transitions, 4594 flow [2022-01-18 23:01:43,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 416 transitions, 4529 flow, removed 24 selfloop flow, removed 5 redundant places. [2022-01-18 23:01:43,400 INFO L242 Difference]: Finished difference. Result has 287 places, 355 transitions, 3906 flow [2022-01-18 23:01:43,401 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=2949, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3906, PETRI_PLACES=287, PETRI_TRANSITIONS=355} [2022-01-18 23:01:43,401 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 115 predicate places. [2022-01-18 23:01:43,401 INFO L470 AbstractCegarLoop]: Abstraction has has 287 places, 355 transitions, 3906 flow [2022-01-18 23:01:43,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:43,401 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:01:43,401 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:01:43,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-18 23:01:43,402 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:01:43,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:01:43,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1183025351, now seen corresponding path program 7 times [2022-01-18 23:01:43,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:01:43,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104563978] [2022-01-18 23:01:43,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:01:43,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:01:43,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:01:43,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:01:43,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:01:43,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104563978] [2022-01-18 23:01:43,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104563978] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:01:43,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:01:43,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 23:01:43,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228473657] [2022-01-18 23:01:43,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:01:43,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 23:01:43,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:01:43,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 23:01:43,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-01-18 23:01:43,792 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:01:43,793 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 355 transitions, 3906 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:43,793 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:01:43,794 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:01:43,794 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:01:45,905 INFO L129 PetriNetUnfolder]: 2442/7208 cut-off events. [2022-01-18 23:01:45,905 INFO L130 PetriNetUnfolder]: For 33008/33085 co-relation queries the response was YES. [2022-01-18 23:01:45,940 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26693 conditions, 7208 events. 2442/7208 cut-off events. For 33008/33085 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 70178 event pairs, 593 based on Foata normal form. 42/7124 useless extension candidates. Maximal degree in co-relation 26627. Up to 2640 conditions per place. [2022-01-18 23:01:45,958 INFO L132 encePairwiseOnDemand]: 159/186 looper letters, 293 selfloop transitions, 159 changer transitions 0/515 dead transitions. [2022-01-18 23:01:45,958 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 515 transitions, 6489 flow [2022-01-18 23:01:45,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 23:01:45,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-18 23:01:45,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2072 transitions. [2022-01-18 23:01:45,962 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5063538611925709 [2022-01-18 23:01:45,962 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2072 transitions. [2022-01-18 23:01:45,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2072 transitions. [2022-01-18 23:01:45,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:01:45,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2072 transitions. [2022-01-18 23:01:45,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 94.18181818181819) internal successors, (2072), 22 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:45,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 186.0) internal successors, (4278), 23 states have internal predecessors, (4278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:45,969 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 186.0) internal successors, (4278), 23 states have internal predecessors, (4278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:45,969 INFO L186 Difference]: Start difference. First operand has 287 places, 355 transitions, 3906 flow. Second operand 22 states and 2072 transitions. [2022-01-18 23:01:45,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 515 transitions, 6489 flow [2022-01-18 23:01:46,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 515 transitions, 6392 flow, removed 42 selfloop flow, removed 5 redundant places. [2022-01-18 23:01:46,104 INFO L242 Difference]: Finished difference. Result has 314 places, 411 transitions, 5229 flow [2022-01-18 23:01:46,104 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=3835, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=5229, PETRI_PLACES=314, PETRI_TRANSITIONS=411} [2022-01-18 23:01:46,105 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 142 predicate places. [2022-01-18 23:01:46,105 INFO L470 AbstractCegarLoop]: Abstraction has has 314 places, 411 transitions, 5229 flow [2022-01-18 23:01:46,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:46,105 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:01:46,105 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:01:46,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-18 23:01:46,106 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:01:46,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:01:46,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1292341893, now seen corresponding path program 8 times [2022-01-18 23:01:46,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:01:46,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444550566] [2022-01-18 23:01:46,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:01:46,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:01:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:01:46,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:01:46,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:01:46,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444550566] [2022-01-18 23:01:46,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444550566] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:01:46,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:01:46,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-18 23:01:46,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843819021] [2022-01-18 23:01:46,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:01:46,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 23:01:46,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:01:46,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 23:01:46,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-01-18 23:01:46,372 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2022-01-18 23:01:46,373 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 411 transitions, 5229 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:46,373 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:01:46,373 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2022-01-18 23:01:46,373 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:01:47,919 INFO L129 PetriNetUnfolder]: 2070/6882 cut-off events. [2022-01-18 23:01:47,919 INFO L130 PetriNetUnfolder]: For 43655/43952 co-relation queries the response was YES. [2022-01-18 23:01:47,956 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26672 conditions, 6882 events. 2070/6882 cut-off events. For 43655/43952 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 69662 event pairs, 436 based on Foata normal form. 228/6973 useless extension candidates. Maximal degree in co-relation 26596. Up to 1458 conditions per place. [2022-01-18 23:01:47,973 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 340 selfloop transitions, 217 changer transitions 0/629 dead transitions. [2022-01-18 23:01:47,973 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 629 transitions, 9250 flow [2022-01-18 23:01:47,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 23:01:47,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-18 23:01:47,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1844 transitions. [2022-01-18 23:01:47,976 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5217883418222977 [2022-01-18 23:01:47,976 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1844 transitions. [2022-01-18 23:01:47,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1844 transitions. [2022-01-18 23:01:47,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:01:47,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1844 transitions. [2022-01-18 23:01:47,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 97.05263157894737) internal successors, (1844), 19 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:47,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:47,981 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:47,981 INFO L186 Difference]: Start difference. First operand has 314 places, 411 transitions, 5229 flow. Second operand 19 states and 1844 transitions. [2022-01-18 23:01:47,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 629 transitions, 9250 flow [2022-01-18 23:01:48,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 629 transitions, 9130 flow, removed 47 selfloop flow, removed 7 redundant places. [2022-01-18 23:01:48,139 INFO L242 Difference]: Finished difference. Result has 333 places, 489 transitions, 7337 flow [2022-01-18 23:01:48,140 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=5147, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=7337, PETRI_PLACES=333, PETRI_TRANSITIONS=489} [2022-01-18 23:01:48,140 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 161 predicate places. [2022-01-18 23:01:48,141 INFO L470 AbstractCegarLoop]: Abstraction has has 333 places, 489 transitions, 7337 flow [2022-01-18 23:01:48,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:48,141 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:01:48,141 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:01:48,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-18 23:01:48,141 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:01:48,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:01:48,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1492816495, now seen corresponding path program 9 times [2022-01-18 23:01:48,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:01:48,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803394721] [2022-01-18 23:01:48,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:01:48,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:01:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:01:48,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:01:48,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:01:48,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803394721] [2022-01-18 23:01:48,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803394721] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:01:48,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:01:48,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 23:01:48,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196417348] [2022-01-18 23:01:48,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:01:48,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:01:48,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:01:48,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:01:48,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:01:48,528 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:01:48,528 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 489 transitions, 7337 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:48,528 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:01:48,528 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:01:48,529 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:01:51,850 INFO L129 PetriNetUnfolder]: 3950/12168 cut-off events. [2022-01-18 23:01:51,850 INFO L130 PetriNetUnfolder]: For 83862/83899 co-relation queries the response was YES. [2022-01-18 23:01:51,930 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50032 conditions, 12168 events. 3950/12168 cut-off events. For 83862/83899 co-relation queries the response was YES. Maximal size of possible extension queue 705. Compared 133655 event pairs, 1824 based on Foata normal form. 30/11944 useless extension candidates. Maximal degree in co-relation 49947. Up to 3768 conditions per place. [2022-01-18 23:01:51,959 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 441 selfloop transitions, 234 changer transitions 0/738 dead transitions. [2022-01-18 23:01:51,959 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 738 transitions, 12185 flow [2022-01-18 23:01:51,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 23:01:51,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-18 23:01:51,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1817 transitions. [2022-01-18 23:01:51,961 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5141482739105829 [2022-01-18 23:01:51,961 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1817 transitions. [2022-01-18 23:01:51,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1817 transitions. [2022-01-18 23:01:51,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:01:51,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1817 transitions. [2022-01-18 23:01:51,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 95.63157894736842) internal successors, (1817), 19 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:51,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:51,966 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:51,966 INFO L186 Difference]: Start difference. First operand has 333 places, 489 transitions, 7337 flow. Second operand 19 states and 1817 transitions. [2022-01-18 23:01:51,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 738 transitions, 12185 flow [2022-01-18 23:01:52,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 738 transitions, 12047 flow, removed 53 selfloop flow, removed 6 redundant places. [2022-01-18 23:01:52,286 INFO L242 Difference]: Finished difference. Result has 356 places, 572 transitions, 9569 flow [2022-01-18 23:01:52,287 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=7235, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9569, PETRI_PLACES=356, PETRI_TRANSITIONS=572} [2022-01-18 23:01:52,287 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 184 predicate places. [2022-01-18 23:01:52,287 INFO L470 AbstractCegarLoop]: Abstraction has has 356 places, 572 transitions, 9569 flow [2022-01-18 23:01:52,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:52,288 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:01:52,288 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:01:52,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-18 23:01:52,288 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:01:52,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:01:52,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1398113381, now seen corresponding path program 10 times [2022-01-18 23:01:52,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:01:52,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924445233] [2022-01-18 23:01:52,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:01:52,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:01:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:01:52,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:01:52,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:01:52,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924445233] [2022-01-18 23:01:52,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924445233] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:01:52,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:01:52,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 23:01:52,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011487580] [2022-01-18 23:01:52,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:01:52,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 23:01:52,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:01:52,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 23:01:52,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-01-18 23:01:52,728 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:01:52,729 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 572 transitions, 9569 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:52,729 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:01:52,729 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:01:52,729 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:01:57,059 INFO L129 PetriNetUnfolder]: 4228/12861 cut-off events. [2022-01-18 23:01:57,059 INFO L130 PetriNetUnfolder]: For 101127/101173 co-relation queries the response was YES. [2022-01-18 23:01:57,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55569 conditions, 12861 events. 4228/12861 cut-off events. For 101127/101173 co-relation queries the response was YES. Maximal size of possible extension queue 784. Compared 143331 event pairs, 802 based on Foata normal form. 34/12572 useless extension candidates. Maximal degree in co-relation 55473. Up to 3680 conditions per place. [2022-01-18 23:01:57,179 INFO L132 encePairwiseOnDemand]: 159/186 looper letters, 407 selfloop transitions, 329 changer transitions 0/799 dead transitions. [2022-01-18 23:01:57,179 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 799 transitions, 14075 flow [2022-01-18 23:01:57,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 23:01:57,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-01-18 23:01:57,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2449 transitions. [2022-01-18 23:01:57,182 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5064102564102564 [2022-01-18 23:01:57,182 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2449 transitions. [2022-01-18 23:01:57,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2449 transitions. [2022-01-18 23:01:57,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:01:57,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2449 transitions. [2022-01-18 23:01:57,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 94.1923076923077) internal successors, (2449), 26 states have internal predecessors, (2449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:57,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 186.0) internal successors, (5022), 27 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:57,189 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 186.0) internal successors, (5022), 27 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:57,189 INFO L186 Difference]: Start difference. First operand has 356 places, 572 transitions, 9569 flow. Second operand 26 states and 2449 transitions. [2022-01-18 23:01:57,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 799 transitions, 14075 flow [2022-01-18 23:01:57,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 799 transitions, 13919 flow, removed 66 selfloop flow, removed 5 redundant places. [2022-01-18 23:01:57,618 INFO L242 Difference]: Finished difference. Result has 388 places, 652 transitions, 12201 flow [2022-01-18 23:01:57,618 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=9432, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=12201, PETRI_PLACES=388, PETRI_TRANSITIONS=652} [2022-01-18 23:01:57,619 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 216 predicate places. [2022-01-18 23:01:57,619 INFO L470 AbstractCegarLoop]: Abstraction has has 388 places, 652 transitions, 12201 flow [2022-01-18 23:01:57,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:57,619 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:01:57,619 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:01:57,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-18 23:01:57,620 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:01:57,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:01:57,620 INFO L85 PathProgramCache]: Analyzing trace with hash -471460169, now seen corresponding path program 11 times [2022-01-18 23:01:57,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:01:57,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626584826] [2022-01-18 23:01:57,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:01:57,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:01:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:01:57,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:01:57,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:01:57,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626584826] [2022-01-18 23:01:57,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626584826] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:01:57,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:01:57,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 23:01:57,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131942085] [2022-01-18 23:01:57,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:01:57,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:01:57,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:01:57,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:01:57,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:01:57,988 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:01:57,989 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 652 transitions, 12201 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:01:57,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:01:57,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:01:57,989 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:02:02,559 INFO L129 PetriNetUnfolder]: 4613/14354 cut-off events. [2022-01-18 23:02:02,559 INFO L130 PetriNetUnfolder]: For 138176/138240 co-relation queries the response was YES. [2022-01-18 23:02:02,660 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65302 conditions, 14354 events. 4613/14354 cut-off events. For 138176/138240 co-relation queries the response was YES. Maximal size of possible extension queue 864. Compared 164419 event pairs, 1921 based on Foata normal form. 39/14074 useless extension candidates. Maximal degree in co-relation 65194. Up to 4590 conditions per place. [2022-01-18 23:02:02,695 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 495 selfloop transitions, 291 changer transitions 0/849 dead transitions. [2022-01-18 23:02:02,695 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 849 transitions, 16853 flow [2022-01-18 23:02:02,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 23:02:02,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-18 23:02:02,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1810 transitions. [2022-01-18 23:02:02,698 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5121675155631012 [2022-01-18 23:02:02,698 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1810 transitions. [2022-01-18 23:02:02,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1810 transitions. [2022-01-18 23:02:02,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:02:02,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1810 transitions. [2022-01-18 23:02:02,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 95.26315789473684) internal successors, (1810), 19 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:02,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:02,702 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:02,703 INFO L186 Difference]: Start difference. First operand has 388 places, 652 transitions, 12201 flow. Second operand 19 states and 1810 transitions. [2022-01-18 23:02:02,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 849 transitions, 16853 flow [2022-01-18 23:02:03,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 849 transitions, 16727 flow, removed 47 selfloop flow, removed 6 redundant places. [2022-01-18 23:02:03,432 INFO L242 Difference]: Finished difference. Result has 411 places, 719 transitions, 14611 flow [2022-01-18 23:02:03,433 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=12079, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=14611, PETRI_PLACES=411, PETRI_TRANSITIONS=719} [2022-01-18 23:02:03,433 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 239 predicate places. [2022-01-18 23:02:03,433 INFO L470 AbstractCegarLoop]: Abstraction has has 411 places, 719 transitions, 14611 flow [2022-01-18 23:02:03,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:03,433 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:02:03,433 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:02:03,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-18 23:02:03,434 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:02:03,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:02:03,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1773522165, now seen corresponding path program 12 times [2022-01-18 23:02:03,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:02:03,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824859179] [2022-01-18 23:02:03,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:02:03,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:02:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:02:03,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:02:03,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:02:03,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824859179] [2022-01-18 23:02:03,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824859179] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:02:03,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:02:03,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 23:02:03,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347767168] [2022-01-18 23:02:03,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:02:03,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 23:02:03,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:02:03,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 23:02:03,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-01-18 23:02:03,815 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:02:03,816 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 719 transitions, 14611 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:03,816 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:02:03,816 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:02:03,816 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:02:08,533 INFO L129 PetriNetUnfolder]: 4611/14517 cut-off events. [2022-01-18 23:02:08,533 INFO L130 PetriNetUnfolder]: For 163056/163056 co-relation queries the response was YES. [2022-01-18 23:02:08,640 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67839 conditions, 14517 events. 4611/14517 cut-off events. For 163056/163056 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 164587 event pairs, 2697 based on Foata normal form. 1/14151 useless extension candidates. Maximal degree in co-relation 67720. Up to 6356 conditions per place. [2022-01-18 23:02:08,672 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 426 selfloop transitions, 357 changer transitions 0/846 dead transitions. [2022-01-18 23:02:08,672 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 846 transitions, 17999 flow [2022-01-18 23:02:08,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 23:02:08,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-01-18 23:02:08,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2321 transitions. [2022-01-18 23:02:08,674 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.49913978494623656 [2022-01-18 23:02:08,674 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2321 transitions. [2022-01-18 23:02:08,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2321 transitions. [2022-01-18 23:02:08,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:02:08,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2321 transitions. [2022-01-18 23:02:08,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 92.84) internal successors, (2321), 25 states have internal predecessors, (2321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:08,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 186.0) internal successors, (4836), 26 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:08,680 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 186.0) internal successors, (4836), 26 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:08,680 INFO L186 Difference]: Start difference. First operand has 411 places, 719 transitions, 14611 flow. Second operand 25 states and 2321 transitions. [2022-01-18 23:02:08,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 846 transitions, 17999 flow [2022-01-18 23:02:09,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 846 transitions, 17719 flow, removed 130 selfloop flow, removed 5 redundant places. [2022-01-18 23:02:09,491 INFO L242 Difference]: Finished difference. Result has 441 places, 749 transitions, 16058 flow [2022-01-18 23:02:09,492 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=14364, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=327, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=16058, PETRI_PLACES=441, PETRI_TRANSITIONS=749} [2022-01-18 23:02:09,492 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 269 predicate places. [2022-01-18 23:02:09,492 INFO L470 AbstractCegarLoop]: Abstraction has has 441 places, 749 transitions, 16058 flow [2022-01-18 23:02:09,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:09,493 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:02:09,493 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:02:09,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-18 23:02:09,493 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:02:09,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:02:09,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1537155545, now seen corresponding path program 13 times [2022-01-18 23:02:09,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:02:09,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65806920] [2022-01-18 23:02:09,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:02:09,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:02:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:02:09,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:02:09,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:02:09,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65806920] [2022-01-18 23:02:09,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65806920] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:02:09,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:02:09,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 23:02:09,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240319215] [2022-01-18 23:02:09,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:02:09,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:02:09,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:02:09,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:02:09,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:02:09,828 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:02:09,829 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 749 transitions, 16058 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:09,829 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:02:09,829 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:02:09,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:02:14,784 INFO L129 PetriNetUnfolder]: 4623/14607 cut-off events. [2022-01-18 23:02:14,784 INFO L130 PetriNetUnfolder]: For 173985/174106 co-relation queries the response was YES. [2022-01-18 23:02:14,914 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69515 conditions, 14607 events. 4623/14607 cut-off events. For 173985/174106 co-relation queries the response was YES. Maximal size of possible extension queue 867. Compared 167976 event pairs, 2126 based on Foata normal form. 51/14350 useless extension candidates. Maximal degree in co-relation 69384. Up to 4590 conditions per place. [2022-01-18 23:02:15,049 INFO L132 encePairwiseOnDemand]: 160/186 looper letters, 585 selfloop transitions, 314 changer transitions 0/962 dead transitions. [2022-01-18 23:02:15,049 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 962 transitions, 21322 flow [2022-01-18 23:02:15,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 23:02:15,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-18 23:02:15,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1823 transitions. [2022-01-18 23:02:15,055 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5158460667798529 [2022-01-18 23:02:15,055 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1823 transitions. [2022-01-18 23:02:15,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1823 transitions. [2022-01-18 23:02:15,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:02:15,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1823 transitions. [2022-01-18 23:02:15,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 95.94736842105263) internal successors, (1823), 19 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:15,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:15,076 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:15,076 INFO L186 Difference]: Start difference. First operand has 441 places, 749 transitions, 16058 flow. Second operand 19 states and 1823 transitions. [2022-01-18 23:02:15,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 962 transitions, 21322 flow [2022-01-18 23:02:15,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 962 transitions, 20888 flow, removed 117 selfloop flow, removed 8 redundant places. [2022-01-18 23:02:15,957 INFO L242 Difference]: Finished difference. Result has 461 places, 810 transitions, 18193 flow [2022-01-18 23:02:15,958 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=15650, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=18193, PETRI_PLACES=461, PETRI_TRANSITIONS=810} [2022-01-18 23:02:15,958 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 289 predicate places. [2022-01-18 23:02:15,959 INFO L470 AbstractCegarLoop]: Abstraction has has 461 places, 810 transitions, 18193 flow [2022-01-18 23:02:15,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:15,959 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:02:15,959 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:02:15,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-18 23:02:15,959 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:02:15,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:02:15,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1184486327, now seen corresponding path program 14 times [2022-01-18 23:02:15,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:02:15,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414502669] [2022-01-18 23:02:15,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:02:15,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:02:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:02:16,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:02:16,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:02:16,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414502669] [2022-01-18 23:02:16,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414502669] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:02:16,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:02:16,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 23:02:16,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686556183] [2022-01-18 23:02:16,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:02:16,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:02:16,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:02:16,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:02:16,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:02:16,325 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:02:16,326 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 810 transitions, 18193 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:16,326 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:02:16,326 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:02:16,326 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:02:21,611 INFO L129 PetriNetUnfolder]: 4620/14575 cut-off events. [2022-01-18 23:02:21,611 INFO L130 PetriNetUnfolder]: For 187825/187945 co-relation queries the response was YES. [2022-01-18 23:02:21,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71488 conditions, 14575 events. 4620/14575 cut-off events. For 187825/187945 co-relation queries the response was YES. Maximal size of possible extension queue 862. Compared 167437 event pairs, 1563 based on Foata normal form. 49/14317 useless extension candidates. Maximal degree in co-relation 71348. Up to 6695 conditions per place. [2022-01-18 23:02:21,874 INFO L132 encePairwiseOnDemand]: 160/186 looper letters, 516 selfloop transitions, 379 changer transitions 0/958 dead transitions. [2022-01-18 23:02:21,874 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 958 transitions, 22110 flow [2022-01-18 23:02:21,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 23:02:21,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-18 23:02:21,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1906 transitions. [2022-01-18 23:02:21,876 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5123655913978494 [2022-01-18 23:02:21,876 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1906 transitions. [2022-01-18 23:02:21,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1906 transitions. [2022-01-18 23:02:21,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:02:21,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1906 transitions. [2022-01-18 23:02:21,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 95.3) internal successors, (1906), 20 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:21,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:21,881 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:21,881 INFO L186 Difference]: Start difference. First operand has 461 places, 810 transitions, 18193 flow. Second operand 20 states and 1906 transitions. [2022-01-18 23:02:21,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 958 transitions, 22110 flow [2022-01-18 23:02:23,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 958 transitions, 21806 flow, removed 142 selfloop flow, removed 5 redundant places. [2022-01-18 23:02:23,054 INFO L242 Difference]: Finished difference. Result has 483 places, 846 transitions, 20042 flow [2022-01-18 23:02:23,054 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=17889, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=810, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=343, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=20042, PETRI_PLACES=483, PETRI_TRANSITIONS=846} [2022-01-18 23:02:23,054 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 311 predicate places. [2022-01-18 23:02:23,055 INFO L470 AbstractCegarLoop]: Abstraction has has 483 places, 846 transitions, 20042 flow [2022-01-18 23:02:23,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:23,055 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:02:23,055 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:02:23,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-18 23:02:23,055 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:02:23,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:02:23,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1750309019, now seen corresponding path program 15 times [2022-01-18 23:02:23,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:02:23,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112428051] [2022-01-18 23:02:23,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:02:23,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:02:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:02:23,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:02:23,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:02:23,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112428051] [2022-01-18 23:02:23,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112428051] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:02:23,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:02:23,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 23:02:23,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116180136] [2022-01-18 23:02:23,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:02:23,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 23:02:23,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:02:23,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 23:02:23,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2022-01-18 23:02:23,665 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 186 [2022-01-18 23:02:23,666 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 846 transitions, 20042 flow. Second operand has 22 states, 22 states have (on average 88.81818181818181) internal successors, (1954), 22 states have internal predecessors, (1954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:23,666 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:02:23,666 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 186 [2022-01-18 23:02:23,667 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:02:30,152 INFO L129 PetriNetUnfolder]: 4620/14689 cut-off events. [2022-01-18 23:02:30,152 INFO L130 PetriNetUnfolder]: For 206334/206436 co-relation queries the response was YES. [2022-01-18 23:02:30,279 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73562 conditions, 14689 events. 4620/14689 cut-off events. For 206334/206436 co-relation queries the response was YES. Maximal size of possible extension queue 894. Compared 170367 event pairs, 793 based on Foata normal form. 40/14368 useless extension candidates. Maximal degree in co-relation 73414. Up to 3775 conditions per place. [2022-01-18 23:02:30,313 INFO L132 encePairwiseOnDemand]: 158/186 looper letters, 523 selfloop transitions, 454 changer transitions 0/1039 dead transitions. [2022-01-18 23:02:30,313 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 1039 transitions, 24991 flow [2022-01-18 23:02:30,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 23:02:30,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-01-18 23:02:30,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2849 transitions. [2022-01-18 23:02:30,316 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4941033645508151 [2022-01-18 23:02:30,316 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2849 transitions. [2022-01-18 23:02:30,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2849 transitions. [2022-01-18 23:02:30,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:02:30,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2849 transitions. [2022-01-18 23:02:30,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 91.90322580645162) internal successors, (2849), 31 states have internal predecessors, (2849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:30,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 186.0) internal successors, (5952), 32 states have internal predecessors, (5952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:30,322 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 186.0) internal successors, (5952), 32 states have internal predecessors, (5952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:30,322 INFO L186 Difference]: Start difference. First operand has 483 places, 846 transitions, 20042 flow. Second operand 31 states and 2849 transitions. [2022-01-18 23:02:30,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 1039 transitions, 24991 flow [2022-01-18 23:02:31,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 1039 transitions, 24706 flow, removed 66 selfloop flow, removed 8 redundant places. [2022-01-18 23:02:31,543 INFO L242 Difference]: Finished difference. Result has 516 places, 891 transitions, 22386 flow [2022-01-18 23:02:31,544 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=19769, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=846, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=409, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=22386, PETRI_PLACES=516, PETRI_TRANSITIONS=891} [2022-01-18 23:02:31,544 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 344 predicate places. [2022-01-18 23:02:31,544 INFO L470 AbstractCegarLoop]: Abstraction has has 516 places, 891 transitions, 22386 flow [2022-01-18 23:02:31,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 88.81818181818181) internal successors, (1954), 22 states have internal predecessors, (1954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:31,545 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:02:31,545 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:02:31,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-18 23:02:31,545 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:02:31,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:02:31,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1104033109, now seen corresponding path program 16 times [2022-01-18 23:02:31,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:02:31,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890649344] [2022-01-18 23:02:31,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:02:31,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:02:31,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:02:32,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:02:32,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:02:32,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890649344] [2022-01-18 23:02:32,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890649344] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:02:32,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:02:32,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 23:02:32,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224993251] [2022-01-18 23:02:32,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:02:32,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 23:02:32,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:02:32,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 23:02:32,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-01-18 23:02:32,055 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:02:32,056 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 891 transitions, 22386 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:32,056 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:02:32,056 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:02:32,056 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:02:38,991 INFO L129 PetriNetUnfolder]: 4617/14650 cut-off events. [2022-01-18 23:02:38,991 INFO L130 PetriNetUnfolder]: For 239370/239454 co-relation queries the response was YES. [2022-01-18 23:02:39,143 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78051 conditions, 14650 events. 4617/14650 cut-off events. For 239370/239454 co-relation queries the response was YES. Maximal size of possible extension queue 885. Compared 168933 event pairs, 774 based on Foata normal form. 33/14328 useless extension candidates. Maximal degree in co-relation 77891. Up to 3156 conditions per place. [2022-01-18 23:02:39,182 INFO L132 encePairwiseOnDemand]: 157/186 looper letters, 545 selfloop transitions, 514 changer transitions 0/1122 dead transitions. [2022-01-18 23:02:39,183 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 1122 transitions, 27803 flow [2022-01-18 23:02:39,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 23:02:39,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-18 23:02:39,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3457 transitions. [2022-01-18 23:02:39,186 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.502324905550712 [2022-01-18 23:02:39,186 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3457 transitions. [2022-01-18 23:02:39,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3457 transitions. [2022-01-18 23:02:39,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:02:39,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3457 transitions. [2022-01-18 23:02:39,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 93.43243243243244) internal successors, (3457), 37 states have internal predecessors, (3457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:39,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 186.0) internal successors, (7068), 38 states have internal predecessors, (7068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:39,193 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 186.0) internal successors, (7068), 38 states have internal predecessors, (7068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:39,194 INFO L186 Difference]: Start difference. First operand has 516 places, 891 transitions, 22386 flow. Second operand 37 states and 3457 transitions. [2022-01-18 23:02:39,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 1122 transitions, 27803 flow [2022-01-18 23:02:40,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 1122 transitions, 27355 flow, removed 177 selfloop flow, removed 11 redundant places. [2022-01-18 23:02:40,736 INFO L242 Difference]: Finished difference. Result has 553 places, 948 transitions, 25070 flow [2022-01-18 23:02:40,737 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=22040, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=891, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=460, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=25070, PETRI_PLACES=553, PETRI_TRANSITIONS=948} [2022-01-18 23:02:40,737 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 381 predicate places. [2022-01-18 23:02:40,737 INFO L470 AbstractCegarLoop]: Abstraction has has 553 places, 948 transitions, 25070 flow [2022-01-18 23:02:40,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:40,737 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:02:40,738 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:02:40,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-18 23:02:40,738 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:02:40,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:02:40,738 INFO L85 PathProgramCache]: Analyzing trace with hash -213076963, now seen corresponding path program 17 times [2022-01-18 23:02:40,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:02:40,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420769051] [2022-01-18 23:02:40,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:02:40,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:02:40,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:02:41,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:02:41,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:02:41,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420769051] [2022-01-18 23:02:41,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420769051] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:02:41,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:02:41,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 23:02:41,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169858457] [2022-01-18 23:02:41,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:02:41,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 23:02:41,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:02:41,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 23:02:41,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-01-18 23:02:41,154 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:02:41,155 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 948 transitions, 25070 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:41,155 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:02:41,155 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:02:41,155 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:02:47,445 INFO L129 PetriNetUnfolder]: 4617/14766 cut-off events. [2022-01-18 23:02:47,446 INFO L130 PetriNetUnfolder]: For 267699/267783 co-relation queries the response was YES. [2022-01-18 23:02:47,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81503 conditions, 14766 events. 4617/14766 cut-off events. For 267699/267783 co-relation queries the response was YES. Maximal size of possible extension queue 881. Compared 171010 event pairs, 885 based on Foata normal form. 33/14439 useless extension candidates. Maximal degree in co-relation 81332. Up to 3156 conditions per place. [2022-01-18 23:02:47,739 INFO L132 encePairwiseOnDemand]: 157/186 looper letters, 561 selfloop transitions, 543 changer transitions 0/1167 dead transitions. [2022-01-18 23:02:47,739 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 1167 transitions, 30401 flow [2022-01-18 23:02:47,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 23:02:47,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-18 23:02:47,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2725 transitions. [2022-01-18 23:02:47,742 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5051909529106414 [2022-01-18 23:02:47,743 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2725 transitions. [2022-01-18 23:02:47,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2725 transitions. [2022-01-18 23:02:47,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:02:47,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2725 transitions. [2022-01-18 23:02:47,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 93.96551724137932) internal successors, (2725), 29 states have internal predecessors, (2725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:47,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 186.0) internal successors, (5580), 30 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:47,750 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 186.0) internal successors, (5580), 30 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:47,750 INFO L186 Difference]: Start difference. First operand has 553 places, 948 transitions, 25070 flow. Second operand 29 states and 2725 transitions. [2022-01-18 23:02:47,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 1167 transitions, 30401 flow [2022-01-18 23:02:49,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 1167 transitions, 29958 flow, removed 134 selfloop flow, removed 11 redundant places. [2022-01-18 23:02:49,708 INFO L242 Difference]: Finished difference. Result has 579 places, 976 transitions, 26892 flow [2022-01-18 23:02:49,709 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=24659, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=948, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=517, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=26892, PETRI_PLACES=579, PETRI_TRANSITIONS=976} [2022-01-18 23:02:49,709 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 407 predicate places. [2022-01-18 23:02:49,710 INFO L470 AbstractCegarLoop]: Abstraction has has 579 places, 976 transitions, 26892 flow [2022-01-18 23:02:49,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:49,710 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:02:49,710 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:02:49,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-18 23:02:49,710 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:02:49,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:02:49,710 INFO L85 PathProgramCache]: Analyzing trace with hash -510603675, now seen corresponding path program 18 times [2022-01-18 23:02:49,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:02:49,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538851743] [2022-01-18 23:02:49,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:02:49,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:02:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:02:50,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:02:50,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:02:50,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538851743] [2022-01-18 23:02:50,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538851743] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:02:50,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:02:50,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 23:02:50,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456663645] [2022-01-18 23:02:50,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:02:50,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 23:02:50,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:02:50,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 23:02:50,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-01-18 23:02:50,063 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:02:50,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 976 transitions, 26892 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:50,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:02:50,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:02:50,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:02:57,827 INFO L129 PetriNetUnfolder]: 4614/14895 cut-off events. [2022-01-18 23:02:57,827 INFO L130 PetriNetUnfolder]: For 296732/296816 co-relation queries the response was YES. [2022-01-18 23:02:58,037 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84555 conditions, 14895 events. 4614/14895 cut-off events. For 296732/296816 co-relation queries the response was YES. Maximal size of possible extension queue 872. Compared 172774 event pairs, 2092 based on Foata normal form. 33/14613 useless extension candidates. Maximal degree in co-relation 84375. Up to 4590 conditions per place. [2022-01-18 23:02:58,149 INFO L132 encePairwiseOnDemand]: 159/186 looper letters, 700 selfloop transitions, 389 changer transitions 0/1152 dead transitions. [2022-01-18 23:02:58,150 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 1152 transitions, 32125 flow [2022-01-18 23:02:58,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 23:02:58,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-01-18 23:02:58,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2179 transitions. [2022-01-18 23:02:58,152 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5093501636278635 [2022-01-18 23:02:58,152 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2179 transitions. [2022-01-18 23:02:58,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2179 transitions. [2022-01-18 23:02:58,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:02:58,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2179 transitions. [2022-01-18 23:02:58,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 94.73913043478261) internal successors, (2179), 23 states have internal predecessors, (2179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:58,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 186.0) internal successors, (4464), 24 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:58,156 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 186.0) internal successors, (4464), 24 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:02:58,156 INFO L186 Difference]: Start difference. First operand has 579 places, 976 transitions, 26892 flow. Second operand 23 states and 2179 transitions. [2022-01-18 23:02:58,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 1152 transitions, 32125 flow [2022-01-18 23:03:00,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 588 places, 1152 transitions, 31173 flow, removed 118 selfloop flow, removed 13 redundant places. [2022-01-18 23:03:00,145 INFO L242 Difference]: Finished difference. Result has 597 places, 1007 transitions, 28251 flow [2022-01-18 23:03:00,146 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=26023, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=976, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=358, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=28251, PETRI_PLACES=597, PETRI_TRANSITIONS=1007} [2022-01-18 23:03:00,146 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 425 predicate places. [2022-01-18 23:03:00,146 INFO L470 AbstractCegarLoop]: Abstraction has has 597 places, 1007 transitions, 28251 flow [2022-01-18 23:03:00,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:03:00,146 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:03:00,146 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:03:00,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-18 23:03:00,147 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:03:00,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:03:00,147 INFO L85 PathProgramCache]: Analyzing trace with hash -834352183, now seen corresponding path program 19 times [2022-01-18 23:03:00,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:03:00,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640937] [2022-01-18 23:03:00,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:03:00,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:03:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:03:00,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:03:00,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:03:00,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640937] [2022-01-18 23:03:00,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640937] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:03:00,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:03:00,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 23:03:00,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855917382] [2022-01-18 23:03:00,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:03:00,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:03:00,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:03:00,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:03:00,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:03:00,541 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:03:00,541 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 1007 transitions, 28251 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:03:00,541 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:03:00,541 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:03:00,542 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:03:07,193 INFO L129 PetriNetUnfolder]: 4611/14923 cut-off events. [2022-01-18 23:03:07,193 INFO L130 PetriNetUnfolder]: For 299234/299351 co-relation queries the response was YES. [2022-01-18 23:03:07,357 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83487 conditions, 14923 events. 4611/14923 cut-off events. For 299234/299351 co-relation queries the response was YES. Maximal size of possible extension queue 873. Compared 173349 event pairs, 1953 based on Foata normal form. 57/14662 useless extension candidates. Maximal degree in co-relation 83302. Up to 4590 conditions per place. [2022-01-18 23:03:07,390 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 696 selfloop transitions, 404 changer transitions 0/1163 dead transitions. [2022-01-18 23:03:07,391 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 1163 transitions, 33200 flow [2022-01-18 23:03:07,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 23:03:07,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-18 23:03:07,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1902 transitions. [2022-01-18 23:03:07,392 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5112903225806451 [2022-01-18 23:03:07,392 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1902 transitions. [2022-01-18 23:03:07,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1902 transitions. [2022-01-18 23:03:07,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:03:07,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1902 transitions. [2022-01-18 23:03:07,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 95.1) internal successors, (1902), 20 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:03:07,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:03:07,396 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:03:07,396 INFO L186 Difference]: Start difference. First operand has 597 places, 1007 transitions, 28251 flow. Second operand 20 states and 1902 transitions. [2022-01-18 23:03:07,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 1163 transitions, 33200 flow [2022-01-18 23:03:09,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 1163 transitions, 32848 flow, removed 104 selfloop flow, removed 9 redundant places. [2022-01-18 23:03:09,457 INFO L242 Difference]: Finished difference. Result has 615 places, 1038 transitions, 30206 flow [2022-01-18 23:03:09,458 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=27899, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1007, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=373, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=30206, PETRI_PLACES=615, PETRI_TRANSITIONS=1038} [2022-01-18 23:03:09,458 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 443 predicate places. [2022-01-18 23:03:09,458 INFO L470 AbstractCegarLoop]: Abstraction has has 615 places, 1038 transitions, 30206 flow [2022-01-18 23:03:09,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:03:09,459 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:03:09,459 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:03:09,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-18 23:03:09,459 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:03:09,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:03:09,459 INFO L85 PathProgramCache]: Analyzing trace with hash 297432779, now seen corresponding path program 20 times [2022-01-18 23:03:09,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:03:09,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163818015] [2022-01-18 23:03:09,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:03:09,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:03:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:03:09,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:03:09,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:03:09,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163818015] [2022-01-18 23:03:09,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163818015] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:03:09,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:03:09,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 23:03:09,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369724053] [2022-01-18 23:03:09,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:03:09,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:03:09,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:03:09,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:03:09,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:03:09,806 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:03:09,807 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 615 places, 1038 transitions, 30206 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:03:09,807 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:03:09,807 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:03:09,807 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:03:16,936 INFO L129 PetriNetUnfolder]: 4608/14990 cut-off events. [2022-01-18 23:03:16,937 INFO L130 PetriNetUnfolder]: For 319549/319663 co-relation queries the response was YES. [2022-01-18 23:03:17,125 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84910 conditions, 14990 events. 4608/14990 cut-off events. For 319549/319663 co-relation queries the response was YES. Maximal size of possible extension queue 876. Compared 174324 event pairs, 1929 based on Foata normal form. 45/14720 useless extension candidates. Maximal degree in co-relation 84717. Up to 4590 conditions per place. [2022-01-18 23:03:17,163 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 707 selfloop transitions, 410 changer transitions 0/1180 dead transitions. [2022-01-18 23:03:17,163 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 1180 transitions, 34917 flow [2022-01-18 23:03:17,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 23:03:17,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-18 23:03:17,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1992 transitions. [2022-01-18 23:03:17,165 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5099846390168971 [2022-01-18 23:03:17,165 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1992 transitions. [2022-01-18 23:03:17,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1992 transitions. [2022-01-18 23:03:17,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:03:17,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1992 transitions. [2022-01-18 23:03:17,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.85714285714286) internal successors, (1992), 21 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:03:17,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:03:17,168 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:03:17,169 INFO L186 Difference]: Start difference. First operand has 615 places, 1038 transitions, 30206 flow. Second operand 21 states and 1992 transitions. [2022-01-18 23:03:17,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 1180 transitions, 34917 flow [2022-01-18 23:03:19,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 627 places, 1180 transitions, 34490 flow, removed 126 selfloop flow, removed 8 redundant places. [2022-01-18 23:03:19,314 INFO L242 Difference]: Finished difference. Result has 637 places, 1069 transitions, 32085 flow [2022-01-18 23:03:19,315 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=29780, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1038, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=379, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=634, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=32085, PETRI_PLACES=637, PETRI_TRANSITIONS=1069} [2022-01-18 23:03:19,316 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 465 predicate places. [2022-01-18 23:03:19,316 INFO L470 AbstractCegarLoop]: Abstraction has has 637 places, 1069 transitions, 32085 flow [2022-01-18 23:03:19,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:03:19,316 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:03:19,316 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:03:19,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-18 23:03:19,316 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:03:19,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:03:19,316 INFO L85 PathProgramCache]: Analyzing trace with hash 481417007, now seen corresponding path program 21 times [2022-01-18 23:03:19,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:03:19,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263289843] [2022-01-18 23:03:19,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:03:19,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:03:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:03:19,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:03:19,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:03:19,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263289843] [2022-01-18 23:03:19,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263289843] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:03:19,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:03:19,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 23:03:19,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610083220] [2022-01-18 23:03:19,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:03:19,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:03:19,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:03:19,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:03:19,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:03:19,737 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:03:19,737 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 637 places, 1069 transitions, 32085 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:03:19,737 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:03:19,737 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:03:19,738 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:03:27,116 INFO L129 PetriNetUnfolder]: 4605/15113 cut-off events. [2022-01-18 23:03:27,116 INFO L130 PetriNetUnfolder]: For 344176/344324 co-relation queries the response was YES. [2022-01-18 23:03:27,312 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86350 conditions, 15113 events. 4605/15113 cut-off events. For 344176/344324 co-relation queries the response was YES. Maximal size of possible extension queue 875. Compared 176054 event pairs, 2273 based on Foata normal form. 77/14862 useless extension candidates. Maximal degree in co-relation 86147. Up to 4590 conditions per place. [2022-01-18 23:03:27,352 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 761 selfloop transitions, 390 changer transitions 0/1214 dead transitions. [2022-01-18 23:03:27,352 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 657 places, 1214 transitions, 36806 flow [2022-01-18 23:03:27,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 23:03:27,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-18 23:03:27,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2001 transitions. [2022-01-18 23:03:27,354 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5122887864823349 [2022-01-18 23:03:27,354 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2001 transitions. [2022-01-18 23:03:27,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2001 transitions. [2022-01-18 23:03:27,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:03:27,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2001 transitions. [2022-01-18 23:03:27,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 95.28571428571429) internal successors, (2001), 21 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:03:27,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:03:27,358 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:03:27,358 INFO L186 Difference]: Start difference. First operand has 637 places, 1069 transitions, 32085 flow. Second operand 21 states and 2001 transitions. [2022-01-18 23:03:27,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 657 places, 1214 transitions, 36806 flow [2022-01-18 23:03:29,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 650 places, 1214 transitions, 36434 flow, removed 127 selfloop flow, removed 7 redundant places. [2022-01-18 23:03:29,783 INFO L242 Difference]: Finished difference. Result has 660 places, 1100 transitions, 34048 flow [2022-01-18 23:03:29,784 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=31714, PETRI_DIFFERENCE_MINUEND_PLACES=630, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1069, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=359, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=685, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=34048, PETRI_PLACES=660, PETRI_TRANSITIONS=1100} [2022-01-18 23:03:29,785 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 488 predicate places. [2022-01-18 23:03:29,785 INFO L470 AbstractCegarLoop]: Abstraction has has 660 places, 1100 transitions, 34048 flow [2022-01-18 23:03:29,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:03:29,785 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:03:29,785 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:03:29,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-18 23:03:29,785 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:03:29,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:03:29,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1783849327, now seen corresponding path program 22 times [2022-01-18 23:03:29,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:03:29,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485025548] [2022-01-18 23:03:29,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:03:29,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:03:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:03:30,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:03:30,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:03:30,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485025548] [2022-01-18 23:03:30,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485025548] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:03:30,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:03:30,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 23:03:30,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518228643] [2022-01-18 23:03:30,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:03:30,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:03:30,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:03:30,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:03:30,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:03:30,185 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:03:30,185 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 660 places, 1100 transitions, 34048 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:03:30,185 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:03:30,185 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:03:30,185 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:03:37,595 INFO L129 PetriNetUnfolder]: 4599/15229 cut-off events. [2022-01-18 23:03:37,595 INFO L130 PetriNetUnfolder]: For 371891/372039 co-relation queries the response was YES. [2022-01-18 23:03:37,893 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88163 conditions, 15229 events. 4599/15229 cut-off events. For 371891/372039 co-relation queries the response was YES. Maximal size of possible extension queue 876. Compared 177814 event pairs, 2186 based on Foata normal form. 77/14977 useless extension candidates. Maximal degree in co-relation 87950. Up to 4590 conditions per place. [2022-01-18 23:03:37,941 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 777 selfloop transitions, 437 changer transitions 0/1277 dead transitions. [2022-01-18 23:03:37,941 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 680 places, 1277 transitions, 40089 flow [2022-01-18 23:03:37,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 23:03:37,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-18 23:03:37,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1998 transitions. [2022-01-18 23:03:37,943 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.511520737327189 [2022-01-18 23:03:37,943 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1998 transitions. [2022-01-18 23:03:37,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1998 transitions. [2022-01-18 23:03:37,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:03:37,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1998 transitions. [2022-01-18 23:03:37,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 95.14285714285714) internal successors, (1998), 21 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:03:37,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:03:37,947 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:03:37,947 INFO L186 Difference]: Start difference. First operand has 660 places, 1100 transitions, 34048 flow. Second operand 21 states and 1998 transitions. [2022-01-18 23:03:37,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 680 places, 1277 transitions, 40089 flow [2022-01-18 23:03:40,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 672 places, 1277 transitions, 39444 flow, removed 146 selfloop flow, removed 8 redundant places. [2022-01-18 23:03:40,991 INFO L242 Difference]: Finished difference. Result has 680 places, 1142 transitions, 36243 flow [2022-01-18 23:03:40,992 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=33423, PETRI_DIFFERENCE_MINUEND_PLACES=652, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=401, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=681, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=36243, PETRI_PLACES=680, PETRI_TRANSITIONS=1142} [2022-01-18 23:03:40,992 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 508 predicate places. [2022-01-18 23:03:40,992 INFO L470 AbstractCegarLoop]: Abstraction has has 680 places, 1142 transitions, 36243 flow [2022-01-18 23:03:40,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:03:40,992 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:03:40,993 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:03:40,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-18 23:03:40,993 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:03:40,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:03:40,993 INFO L85 PathProgramCache]: Analyzing trace with hash -2110898629, now seen corresponding path program 23 times [2022-01-18 23:03:40,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:03:40,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734946291] [2022-01-18 23:03:40,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:03:40,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:03:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:03:41,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:03:41,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:03:41,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734946291] [2022-01-18 23:03:41,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734946291] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:03:41,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:03:41,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 23:03:41,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685081565] [2022-01-18 23:03:41,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:03:41,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:03:41,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:03:41,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:03:41,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:03:41,307 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:03:41,307 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 680 places, 1142 transitions, 36243 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:03:41,307 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:03:41,307 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:03:41,307 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:03:48,985 INFO L129 PetriNetUnfolder]: 4599/15194 cut-off events. [2022-01-18 23:03:48,985 INFO L130 PetriNetUnfolder]: For 383151/383235 co-relation queries the response was YES. [2022-01-18 23:03:49,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88785 conditions, 15194 events. 4599/15194 cut-off events. For 383151/383235 co-relation queries the response was YES. Maximal size of possible extension queue 874. Compared 177461 event pairs, 2250 based on Foata normal form. 33/14890 useless extension candidates. Maximal degree in co-relation 88564. Up to 4590 conditions per place. [2022-01-18 23:03:49,239 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 779 selfloop transitions, 433 changer transitions 0/1275 dead transitions. [2022-01-18 23:03:49,239 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 700 places, 1275 transitions, 40533 flow [2022-01-18 23:03:49,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 23:03:49,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-18 23:03:49,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2000 transitions. [2022-01-18 23:03:49,241 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5120327700972862 [2022-01-18 23:03:49,241 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2000 transitions. [2022-01-18 23:03:49,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2000 transitions. [2022-01-18 23:03:49,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:03:49,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2000 transitions. [2022-01-18 23:03:49,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 95.23809523809524) internal successors, (2000), 21 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:03:49,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:03:49,245 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:03:49,245 INFO L186 Difference]: Start difference. First operand has 680 places, 1142 transitions, 36243 flow. Second operand 21 states and 2000 transitions. [2022-01-18 23:03:49,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 700 places, 1275 transitions, 40533 flow [2022-01-18 23:03:51,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 692 places, 1275 transitions, 39783 flow, removed 130 selfloop flow, removed 8 redundant places. [2022-01-18 23:03:51,981 INFO L242 Difference]: Finished difference. Result has 698 places, 1158 transitions, 36913 flow [2022-01-18 23:03:51,982 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=35493, PETRI_DIFFERENCE_MINUEND_PLACES=672, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=417, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=709, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=36913, PETRI_PLACES=698, PETRI_TRANSITIONS=1158} [2022-01-18 23:03:51,983 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 526 predicate places. [2022-01-18 23:03:51,983 INFO L470 AbstractCegarLoop]: Abstraction has has 698 places, 1158 transitions, 36913 flow [2022-01-18 23:03:51,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:03:51,983 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:03:51,983 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:03:51,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-18 23:03:51,983 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:03:51,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:03:51,983 INFO L85 PathProgramCache]: Analyzing trace with hash 464141231, now seen corresponding path program 24 times [2022-01-18 23:03:51,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:03:51,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341574163] [2022-01-18 23:03:51,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:03:51,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:03:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:03:52,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:03:52,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:03:52,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341574163] [2022-01-18 23:03:52,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341574163] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:03:52,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:03:52,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 23:03:52,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574386636] [2022-01-18 23:03:52,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:03:52,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:03:52,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:03:52,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:03:52,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:03:52,306 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:03:52,307 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 698 places, 1158 transitions, 36913 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:03:52,307 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:03:52,307 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:03:52,307 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:03:59,934 INFO L129 PetriNetUnfolder]: 4596/15219 cut-off events. [2022-01-18 23:03:59,935 INFO L130 PetriNetUnfolder]: For 396514/396598 co-relation queries the response was YES. [2022-01-18 23:04:00,140 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89672 conditions, 15219 events. 4596/15219 cut-off events. For 396514/396598 co-relation queries the response was YES. Maximal size of possible extension queue 868. Compared 177495 event pairs, 2030 based on Foata normal form. 33/14914 useless extension candidates. Maximal degree in co-relation 89445. Up to 4484 conditions per place. [2022-01-18 23:04:00,176 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 814 selfloop transitions, 466 changer transitions 0/1343 dead transitions. [2022-01-18 23:04:00,176 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 718 places, 1343 transitions, 42922 flow [2022-01-18 23:04:00,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 23:04:00,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-18 23:04:00,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1995 transitions. [2022-01-18 23:04:00,180 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.510752688172043 [2022-01-18 23:04:00,180 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1995 transitions. [2022-01-18 23:04:00,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1995 transitions. [2022-01-18 23:04:00,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:04:00,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1995 transitions. [2022-01-18 23:04:00,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 95.0) internal successors, (1995), 21 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:04:00,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:04:00,184 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:04:00,184 INFO L186 Difference]: Start difference. First operand has 698 places, 1158 transitions, 36913 flow. Second operand 21 states and 1995 transitions. [2022-01-18 23:04:00,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 718 places, 1343 transitions, 42922 flow [2022-01-18 23:04:03,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 708 places, 1343 transitions, 42196 flow, removed 145 selfloop flow, removed 10 redundant places. [2022-01-18 23:04:03,114 INFO L242 Difference]: Finished difference. Result has 715 places, 1186 transitions, 38466 flow [2022-01-18 23:04:03,115 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=36206, PETRI_DIFFERENCE_MINUEND_PLACES=688, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=438, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=701, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=38466, PETRI_PLACES=715, PETRI_TRANSITIONS=1186} [2022-01-18 23:04:03,117 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 543 predicate places. [2022-01-18 23:04:03,118 INFO L470 AbstractCegarLoop]: Abstraction has has 715 places, 1186 transitions, 38466 flow [2022-01-18 23:04:03,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:04:03,118 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:04:03,118 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:04:03,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-18 23:04:03,118 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:04:03,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:04:03,119 INFO L85 PathProgramCache]: Analyzing trace with hash -433342677, now seen corresponding path program 25 times [2022-01-18 23:04:03,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:04:03,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685077498] [2022-01-18 23:04:03,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:04:03,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:04:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:04:03,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:04:03,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:04:03,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685077498] [2022-01-18 23:04:03,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685077498] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:04:03,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:04:03,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 23:04:03,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099617882] [2022-01-18 23:04:03,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:04:03,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:04:03,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:04:03,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:04:03,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:04:03,454 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:04:03,455 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 715 places, 1186 transitions, 38466 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:04:03,455 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:04:03,455 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:04:03,455 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:04:11,383 INFO L129 PetriNetUnfolder]: 4593/15306 cut-off events. [2022-01-18 23:04:11,383 INFO L130 PetriNetUnfolder]: For 418338/418412 co-relation queries the response was YES. [2022-01-18 23:04:11,599 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90804 conditions, 15306 events. 4593/15306 cut-off events. For 418338/418412 co-relation queries the response was YES. Maximal size of possible extension queue 877. Compared 179039 event pairs, 2201 based on Foata normal form. 33/14993 useless extension candidates. Maximal degree in co-relation 90572. Up to 5261 conditions per place. [2022-01-18 23:04:11,636 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 836 selfloop transitions, 472 changer transitions 0/1371 dead transitions. [2022-01-18 23:04:11,636 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 735 places, 1371 transitions, 44687 flow [2022-01-18 23:04:11,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 23:04:11,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-18 23:04:11,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2001 transitions. [2022-01-18 23:04:11,638 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5122887864823349 [2022-01-18 23:04:11,638 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2001 transitions. [2022-01-18 23:04:11,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2001 transitions. [2022-01-18 23:04:11,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:04:11,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2001 transitions. [2022-01-18 23:04:11,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 95.28571428571429) internal successors, (2001), 21 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:04:11,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:04:11,641 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:04:11,641 INFO L186 Difference]: Start difference. First operand has 715 places, 1186 transitions, 38466 flow. Second operand 21 states and 2001 transitions. [2022-01-18 23:04:11,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 735 places, 1371 transitions, 44687 flow [2022-01-18 23:04:14,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 723 places, 1371 transitions, 44143 flow, removed 150 selfloop flow, removed 12 redundant places. [2022-01-18 23:04:14,667 INFO L242 Difference]: Finished difference. Result has 732 places, 1216 transitions, 40439 flow [2022-01-18 23:04:14,668 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=37922, PETRI_DIFFERENCE_MINUEND_PLACES=703, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=442, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=723, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=40439, PETRI_PLACES=732, PETRI_TRANSITIONS=1216} [2022-01-18 23:04:14,668 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 560 predicate places. [2022-01-18 23:04:14,668 INFO L470 AbstractCegarLoop]: Abstraction has has 732 places, 1216 transitions, 40439 flow [2022-01-18 23:04:14,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:04:14,668 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:04:14,668 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:04:14,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-18 23:04:14,669 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:04:14,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:04:14,669 INFO L85 PathProgramCache]: Analyzing trace with hash 285694885, now seen corresponding path program 26 times [2022-01-18 23:04:14,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:04:14,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776615417] [2022-01-18 23:04:14,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:04:14,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:04:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:04:15,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:04:15,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:04:15,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776615417] [2022-01-18 23:04:15,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776615417] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:04:15,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:04:15,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 23:04:15,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65195239] [2022-01-18 23:04:15,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:04:15,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:04:15,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:04:15,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:04:15,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:04:15,086 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:04:15,087 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 732 places, 1216 transitions, 40439 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:04:15,087 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:04:15,087 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:04:15,087 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:04:23,273 INFO L129 PetriNetUnfolder]: 4593/15294 cut-off events. [2022-01-18 23:04:23,273 INFO L130 PetriNetUnfolder]: For 440692/440766 co-relation queries the response was YES. [2022-01-18 23:04:23,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91276 conditions, 15294 events. 4593/15294 cut-off events. For 440692/440766 co-relation queries the response was YES. Maximal size of possible extension queue 876. Compared 178923 event pairs, 2176 based on Foata normal form. 33/14986 useless extension candidates. Maximal degree in co-relation 91039. Up to 5261 conditions per place. [2022-01-18 23:04:23,518 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 834 selfloop transitions, 480 changer transitions 0/1377 dead transitions. [2022-01-18 23:04:23,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 752 places, 1377 transitions, 45974 flow [2022-01-18 23:04:23,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 23:04:23,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-18 23:04:23,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1991 transitions. [2022-01-18 23:04:23,528 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5097286226318485 [2022-01-18 23:04:23,528 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1991 transitions. [2022-01-18 23:04:23,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1991 transitions. [2022-01-18 23:04:23,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:04:23,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1991 transitions. [2022-01-18 23:04:23,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.80952380952381) internal successors, (1991), 21 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:04:23,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:04:23,531 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:04:23,531 INFO L186 Difference]: Start difference. First operand has 732 places, 1216 transitions, 40439 flow. Second operand 21 states and 1991 transitions. [2022-01-18 23:04:23,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 752 places, 1377 transitions, 45974 flow [2022-01-18 23:04:26,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 742 places, 1377 transitions, 45417 flow, removed 161 selfloop flow, removed 10 redundant places. [2022-01-18 23:04:26,970 INFO L242 Difference]: Finished difference. Result has 748 places, 1232 transitions, 41419 flow [2022-01-18 23:04:26,971 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=39882, PETRI_DIFFERENCE_MINUEND_PLACES=722, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=464, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=736, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=41419, PETRI_PLACES=748, PETRI_TRANSITIONS=1232} [2022-01-18 23:04:26,971 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 576 predicate places. [2022-01-18 23:04:26,971 INFO L470 AbstractCegarLoop]: Abstraction has has 748 places, 1232 transitions, 41419 flow [2022-01-18 23:04:26,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:04:26,971 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:04:26,971 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:04:26,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-18 23:04:26,972 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:04:26,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:04:26,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1950886853, now seen corresponding path program 27 times [2022-01-18 23:04:26,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:04:26,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454979754] [2022-01-18 23:04:26,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:04:26,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:04:27,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:04:27,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:04:27,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:04:27,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454979754] [2022-01-18 23:04:27,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454979754] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:04:27,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:04:27,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 23:04:27,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941360613] [2022-01-18 23:04:27,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:04:27,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:04:27,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:04:27,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:04:27,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:04:27,324 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:04:27,325 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 748 places, 1232 transitions, 41419 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:04:27,325 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:04:27,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:04:27,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:04:36,432 INFO L129 PetriNetUnfolder]: 4611/15453 cut-off events. [2022-01-18 23:04:36,432 INFO L130 PetriNetUnfolder]: For 481382/481457 co-relation queries the response was YES. [2022-01-18 23:04:36,668 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93703 conditions, 15453 events. 4611/15453 cut-off events. For 481382/481457 co-relation queries the response was YES. Maximal size of possible extension queue 856. Compared 180299 event pairs, 592 based on Foata normal form. 28/15305 useless extension candidates. Maximal degree in co-relation 93463. Up to 3305 conditions per place. [2022-01-18 23:04:36,709 INFO L132 encePairwiseOnDemand]: 159/186 looper letters, 832 selfloop transitions, 619 changer transitions 0/1514 dead transitions. [2022-01-18 23:04:36,709 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 775 places, 1514 transitions, 50616 flow [2022-01-18 23:04:36,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 23:04:36,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-18 23:04:36,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2646 transitions. [2022-01-18 23:04:36,711 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5080645161290323 [2022-01-18 23:04:36,712 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2646 transitions. [2022-01-18 23:04:36,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2646 transitions. [2022-01-18 23:04:36,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:04:36,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2646 transitions. [2022-01-18 23:04:36,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 94.5) internal successors, (2646), 28 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:04:36,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 186.0) internal successors, (5394), 29 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:04:36,717 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 186.0) internal successors, (5394), 29 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:04:36,717 INFO L186 Difference]: Start difference. First operand has 748 places, 1232 transitions, 41419 flow. Second operand 28 states and 2646 transitions. [2022-01-18 23:04:36,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 775 places, 1514 transitions, 50616 flow [2022-01-18 23:04:40,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 765 places, 1514 transitions, 50016 flow, removed 177 selfloop flow, removed 10 redundant places. [2022-01-18 23:04:40,239 INFO L242 Difference]: Finished difference. Result has 778 places, 1320 transitions, 46076 flow [2022-01-18 23:04:40,240 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=40845, PETRI_DIFFERENCE_MINUEND_PLACES=738, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=533, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=46076, PETRI_PLACES=778, PETRI_TRANSITIONS=1320} [2022-01-18 23:04:40,241 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 606 predicate places. [2022-01-18 23:04:40,241 INFO L470 AbstractCegarLoop]: Abstraction has has 778 places, 1320 transitions, 46076 flow [2022-01-18 23:04:40,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:04:40,241 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:04:40,241 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:04:40,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-18 23:04:40,241 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:04:40,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:04:40,241 INFO L85 PathProgramCache]: Analyzing trace with hash -714569455, now seen corresponding path program 28 times [2022-01-18 23:04:40,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:04:40,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684592973] [2022-01-18 23:04:40,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:04:40,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:04:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:04:40,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:04:40,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:04:40,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684592973] [2022-01-18 23:04:40,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684592973] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:04:40,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:04:40,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-18 23:04:40,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510015549] [2022-01-18 23:04:40,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:04:40,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 23:04:40,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:04:40,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 23:04:40,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-01-18 23:04:40,452 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2022-01-18 23:04:40,452 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 778 places, 1320 transitions, 46076 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:04:40,452 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:04:40,452 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2022-01-18 23:04:40,452 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:04:48,774 INFO L129 PetriNetUnfolder]: 4136/14965 cut-off events. [2022-01-18 23:04:48,774 INFO L130 PetriNetUnfolder]: For 541727/542192 co-relation queries the response was YES. [2022-01-18 23:04:49,011 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94156 conditions, 14965 events. 4136/14965 cut-off events. For 541727/542192 co-relation queries the response was YES. Maximal size of possible extension queue 826. Compared 178567 event pairs, 2307 based on Foata normal form. 327/14953 useless extension candidates. Maximal degree in co-relation 93906. Up to 6143 conditions per place. [2022-01-18 23:04:49,048 INFO L132 encePairwiseOnDemand]: 164/186 looper letters, 848 selfloop transitions, 520 changer transitions 0/1463 dead transitions. [2022-01-18 23:04:49,048 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 795 places, 1463 transitions, 52521 flow [2022-01-18 23:04:49,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 23:04:49,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-18 23:04:49,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1725 transitions. [2022-01-18 23:04:49,050 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5152329749103942 [2022-01-18 23:04:49,050 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1725 transitions. [2022-01-18 23:04:49,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1725 transitions. [2022-01-18 23:04:49,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:04:49,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1725 transitions. [2022-01-18 23:04:49,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 95.83333333333333) internal successors, (1725), 18 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:04:49,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 186.0) internal successors, (3534), 19 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:04:49,053 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 186.0) internal successors, (3534), 19 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:04:49,053 INFO L186 Difference]: Start difference. First operand has 778 places, 1320 transitions, 46076 flow. Second operand 18 states and 1725 transitions. [2022-01-18 23:04:49,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 795 places, 1463 transitions, 52521 flow [2022-01-18 23:04:53,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 789 places, 1463 transitions, 51731 flow, removed 353 selfloop flow, removed 6 redundant places. [2022-01-18 23:04:53,059 INFO L242 Difference]: Finished difference. Result has 797 places, 1363 transitions, 48379 flow [2022-01-18 23:04:53,059 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=45343, PETRI_DIFFERENCE_MINUEND_PLACES=772, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=477, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=815, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=48379, PETRI_PLACES=797, PETRI_TRANSITIONS=1363} [2022-01-18 23:04:53,060 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 625 predicate places. [2022-01-18 23:04:53,060 INFO L470 AbstractCegarLoop]: Abstraction has has 797 places, 1363 transitions, 48379 flow [2022-01-18 23:04:53,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:04:53,060 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:04:53,060 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:04:53,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-18 23:04:53,060 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:04:53,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:04:53,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1467873009, now seen corresponding path program 29 times [2022-01-18 23:04:53,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:04:53,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778146480] [2022-01-18 23:04:53,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:04:53,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:04:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:04:53,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:04:53,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:04:53,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778146480] [2022-01-18 23:04:53,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778146480] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:04:53,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:04:53,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 23:04:53,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923878937] [2022-01-18 23:04:53,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:04:53,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:04:53,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:04:53,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:04:53,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:04:53,386 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:04:53,386 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 797 places, 1363 transitions, 48379 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:04:53,386 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:04:53,386 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:04:53,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:05:03,916 INFO L129 PetriNetUnfolder]: 4608/15919 cut-off events. [2022-01-18 23:05:03,917 INFO L130 PetriNetUnfolder]: For 579045/579112 co-relation queries the response was YES. [2022-01-18 23:05:04,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101914 conditions, 15919 events. 4608/15919 cut-off events. For 579045/579112 co-relation queries the response was YES. Maximal size of possible extension queue 866. Compared 189013 event pairs, 1945 based on Foata normal form. 36/15620 useless extension candidates. Maximal degree in co-relation 101656. Up to 5350 conditions per place. [2022-01-18 23:05:04,216 INFO L132 encePairwiseOnDemand]: 160/186 looper letters, 978 selfloop transitions, 550 changer transitions 0/1591 dead transitions. [2022-01-18 23:05:04,216 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 822 places, 1591 transitions, 56219 flow [2022-01-18 23:05:04,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 23:05:04,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-01-18 23:05:04,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2454 transitions. [2022-01-18 23:05:04,221 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5074441687344913 [2022-01-18 23:05:04,221 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2454 transitions. [2022-01-18 23:05:04,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2454 transitions. [2022-01-18 23:05:04,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:05:04,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2454 transitions. [2022-01-18 23:05:04,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 94.38461538461539) internal successors, (2454), 26 states have internal predecessors, (2454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:05:04,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 186.0) internal successors, (5022), 27 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:05:04,225 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 186.0) internal successors, (5022), 27 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:05:04,225 INFO L186 Difference]: Start difference. First operand has 797 places, 1363 transitions, 48379 flow. Second operand 26 states and 2454 transitions. [2022-01-18 23:05:04,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 822 places, 1591 transitions, 56219 flow [2022-01-18 23:05:09,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 815 places, 1591 transitions, 55715 flow, removed 153 selfloop flow, removed 7 redundant places. [2022-01-18 23:05:09,128 INFO L242 Difference]: Finished difference. Result has 827 places, 1430 transitions, 52325 flow [2022-01-18 23:05:09,129 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=47899, PETRI_DIFFERENCE_MINUEND_PLACES=790, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=486, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=832, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=52325, PETRI_PLACES=827, PETRI_TRANSITIONS=1430} [2022-01-18 23:05:09,129 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 655 predicate places. [2022-01-18 23:05:09,130 INFO L470 AbstractCegarLoop]: Abstraction has has 827 places, 1430 transitions, 52325 flow [2022-01-18 23:05:09,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:05:09,130 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:05:09,130 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:05:09,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-18 23:05:09,130 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:05:09,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:05:09,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1705692587, now seen corresponding path program 30 times [2022-01-18 23:05:09,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:05:09,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971182210] [2022-01-18 23:05:09,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:05:09,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:05:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:05:09,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:05:09,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:05:09,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971182210] [2022-01-18 23:05:09,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971182210] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:05:09,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:05:09,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 23:05:09,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621757120] [2022-01-18 23:05:09,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:05:09,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:05:09,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:05:09,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:05:09,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:05:09,455 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:05:09,456 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 827 places, 1430 transitions, 52325 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:05:09,456 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:05:09,456 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:05:09,456 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:05:19,617 INFO L129 PetriNetUnfolder]: 4608/15910 cut-off events. [2022-01-18 23:05:19,617 INFO L130 PetriNetUnfolder]: For 628559/628559 co-relation queries the response was YES. [2022-01-18 23:05:19,881 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104395 conditions, 15910 events. 4608/15910 cut-off events. For 628559/628559 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 187788 event pairs, 2054 based on Foata normal form. 1/15628 useless extension candidates. Maximal degree in co-relation 104126. Up to 5782 conditions per place. [2022-01-18 23:05:19,928 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 971 selfloop transitions, 554 changer transitions 0/1588 dead transitions. [2022-01-18 23:05:19,928 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 847 places, 1588 transitions, 58923 flow [2022-01-18 23:05:19,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 23:05:19,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-18 23:05:19,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1985 transitions. [2022-01-18 23:05:19,930 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5081925243215566 [2022-01-18 23:05:19,930 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1985 transitions. [2022-01-18 23:05:19,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1985 transitions. [2022-01-18 23:05:19,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:05:19,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1985 transitions. [2022-01-18 23:05:19,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.52380952380952) internal successors, (1985), 21 states have internal predecessors, (1985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:05:19,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:05:19,933 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:05:19,933 INFO L186 Difference]: Start difference. First operand has 827 places, 1430 transitions, 52325 flow. Second operand 21 states and 1985 transitions. [2022-01-18 23:05:19,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 847 places, 1588 transitions, 58923 flow [2022-01-18 23:05:25,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 841 places, 1588 transitions, 57889 flow, removed 466 selfloop flow, removed 6 redundant places. [2022-01-18 23:05:25,833 INFO L242 Difference]: Finished difference. Result has 849 places, 1456 transitions, 53648 flow [2022-01-18 23:05:25,834 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=51565, PETRI_DIFFERENCE_MINUEND_PLACES=821, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=528, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=876, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=53648, PETRI_PLACES=849, PETRI_TRANSITIONS=1456} [2022-01-18 23:05:25,835 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 677 predicate places. [2022-01-18 23:05:25,835 INFO L470 AbstractCegarLoop]: Abstraction has has 849 places, 1456 transitions, 53648 flow [2022-01-18 23:05:25,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:05:25,835 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:05:25,835 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:05:25,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-18 23:05:25,835 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:05:25,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:05:25,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1083486911, now seen corresponding path program 31 times [2022-01-18 23:05:25,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:05:25,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637265442] [2022-01-18 23:05:25,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:05:25,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:05:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:05:26,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:05:26,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:05:26,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637265442] [2022-01-18 23:05:26,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637265442] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:05:26,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:05:26,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 23:05:26,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924123563] [2022-01-18 23:05:26,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:05:26,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:05:26,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:05:26,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:05:26,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:05:26,150 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:05:26,150 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 849 places, 1456 transitions, 53648 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:05:26,150 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:05:26,151 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:05:26,151 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:05:37,117 INFO L129 PetriNetUnfolder]: 4605/15811 cut-off events. [2022-01-18 23:05:37,117 INFO L130 PetriNetUnfolder]: For 641890/641994 co-relation queries the response was YES. [2022-01-18 23:05:37,383 INFO L84 FinitePrefix]: Finished finitePrefix Result has 105386 conditions, 15811 events. 4605/15811 cut-off events. For 641890/641994 co-relation queries the response was YES. Maximal size of possible extension queue 890. Compared 187559 event pairs, 453 based on Foata normal form. 49/15685 useless extension candidates. Maximal degree in co-relation 105108. Up to 3354 conditions per place. [2022-01-18 23:05:37,425 INFO L132 encePairwiseOnDemand]: 159/186 looper letters, 948 selfloop transitions, 696 changer transitions 0/1707 dead transitions. [2022-01-18 23:05:37,425 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 877 places, 1707 transitions, 62443 flow [2022-01-18 23:05:37,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 23:05:37,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-18 23:05:37,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2741 transitions. [2022-01-18 23:05:37,427 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5081572117167222 [2022-01-18 23:05:37,427 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2741 transitions. [2022-01-18 23:05:37,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2741 transitions. [2022-01-18 23:05:37,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:05:37,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2741 transitions. [2022-01-18 23:05:37,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 94.51724137931035) internal successors, (2741), 29 states have internal predecessors, (2741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:05:37,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 186.0) internal successors, (5580), 30 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:05:37,432 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 186.0) internal successors, (5580), 30 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:05:37,432 INFO L186 Difference]: Start difference. First operand has 849 places, 1456 transitions, 53648 flow. Second operand 29 states and 2741 transitions. [2022-01-18 23:05:37,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 877 places, 1707 transitions, 62443 flow [2022-01-18 23:05:43,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 869 places, 1707 transitions, 61529 flow, removed 249 selfloop flow, removed 8 redundant places. [2022-01-18 23:05:43,569 INFO L242 Difference]: Finished difference. Result has 877 places, 1488 transitions, 56345 flow [2022-01-18 23:05:43,570 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=52792, PETRI_DIFFERENCE_MINUEND_PLACES=841, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=664, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=767, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=56345, PETRI_PLACES=877, PETRI_TRANSITIONS=1488} [2022-01-18 23:05:43,571 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 705 predicate places. [2022-01-18 23:05:43,571 INFO L470 AbstractCegarLoop]: Abstraction has has 877 places, 1488 transitions, 56345 flow [2022-01-18 23:05:43,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:05:43,571 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:05:43,571 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:05:43,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-18 23:05:43,571 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:05:43,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:05:43,572 INFO L85 PathProgramCache]: Analyzing trace with hash -742526755, now seen corresponding path program 32 times [2022-01-18 23:05:43,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:05:43,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449683512] [2022-01-18 23:05:43,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:05:43,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:05:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:05:43,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:05:43,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:05:43,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449683512] [2022-01-18 23:05:43,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449683512] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:05:43,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:05:43,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 23:05:43,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620853124] [2022-01-18 23:05:43,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:05:43,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:05:43,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:05:43,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:05:43,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:05:43,979 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:05:43,980 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 877 places, 1488 transitions, 56345 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:05:43,980 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:05:43,980 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:05:43,980 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:05:54,808 INFO L129 PetriNetUnfolder]: 4602/15950 cut-off events. [2022-01-18 23:05:54,808 INFO L130 PetriNetUnfolder]: For 678735/678837 co-relation queries the response was YES. [2022-01-18 23:05:55,146 INFO L84 FinitePrefix]: Finished finitePrefix Result has 108491 conditions, 15950 events. 4602/15950 cut-off events. For 678735/678837 co-relation queries the response was YES. Maximal size of possible extension queue 879. Compared 189695 event pairs, 1828 based on Foata normal form. 51/15719 useless extension candidates. Maximal degree in co-relation 108206. Up to 7342 conditions per place. [2022-01-18 23:05:55,192 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 1019 selfloop transitions, 549 changer transitions 0/1631 dead transitions. [2022-01-18 23:05:55,192 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 897 places, 1631 transitions, 62664 flow [2022-01-18 23:05:55,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 23:05:55,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-18 23:05:55,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1994 transitions. [2022-01-18 23:05:55,194 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5104966717869943 [2022-01-18 23:05:55,194 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1994 transitions. [2022-01-18 23:05:55,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1994 transitions. [2022-01-18 23:05:55,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:05:55,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1994 transitions. [2022-01-18 23:05:55,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.95238095238095) internal successors, (1994), 21 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:05:55,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:05:55,197 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:05:55,197 INFO L186 Difference]: Start difference. First operand has 877 places, 1488 transitions, 56345 flow. Second operand 21 states and 1994 transitions. [2022-01-18 23:05:55,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 897 places, 1631 transitions, 62664 flow [2022-01-18 23:06:01,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 884 places, 1631 transitions, 61953 flow, removed 194 selfloop flow, removed 13 redundant places. [2022-01-18 23:06:01,671 INFO L242 Difference]: Finished difference. Result has 893 places, 1527 transitions, 58963 flow [2022-01-18 23:06:01,673 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=55636, PETRI_DIFFERENCE_MINUEND_PLACES=864, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=510, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=945, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=58963, PETRI_PLACES=893, PETRI_TRANSITIONS=1527} [2022-01-18 23:06:01,673 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 721 predicate places. [2022-01-18 23:06:01,673 INFO L470 AbstractCegarLoop]: Abstraction has has 893 places, 1527 transitions, 58963 flow [2022-01-18 23:06:01,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:06:01,673 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:06:01,674 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:06:01,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-18 23:06:01,674 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:06:01,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:06:01,674 INFO L85 PathProgramCache]: Analyzing trace with hash -126246539, now seen corresponding path program 33 times [2022-01-18 23:06:01,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:06:01,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722424511] [2022-01-18 23:06:01,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:06:01,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:06:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:06:02,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:06:02,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:06:02,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722424511] [2022-01-18 23:06:02,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722424511] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:06:02,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:06:02,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 23:06:02,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004131514] [2022-01-18 23:06:02,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:06:02,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:06:02,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:06:02,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:06:02,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:06:02,026 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:06:02,027 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 893 places, 1527 transitions, 58963 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:06:02,027 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:06:02,027 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:06:02,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:06:13,759 INFO L129 PetriNetUnfolder]: 4599/16066 cut-off events. [2022-01-18 23:06:13,760 INFO L130 PetriNetUnfolder]: For 722970/723034 co-relation queries the response was YES. [2022-01-18 23:06:14,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109440 conditions, 16066 events. 4599/16066 cut-off events. For 722970/723034 co-relation queries the response was YES. Maximal size of possible extension queue 864. Compared 191271 event pairs, 1941 based on Foata normal form. 37/15768 useless extension candidates. Maximal degree in co-relation 109146. Up to 5350 conditions per place. [2022-01-18 23:06:14,116 INFO L132 encePairwiseOnDemand]: 160/186 looper letters, 1060 selfloop transitions, 597 changer transitions 0/1720 dead transitions. [2022-01-18 23:06:14,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 919 places, 1720 transitions, 66158 flow [2022-01-18 23:06:14,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-18 23:06:14,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-18 23:06:14,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2546 transitions. [2022-01-18 23:06:14,118 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5069693349263241 [2022-01-18 23:06:14,118 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2546 transitions. [2022-01-18 23:06:14,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2546 transitions. [2022-01-18 23:06:14,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:06:14,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2546 transitions. [2022-01-18 23:06:14,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 94.29629629629629) internal successors, (2546), 27 states have internal predecessors, (2546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:06:14,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 186.0) internal successors, (5208), 28 states have internal predecessors, (5208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:06:14,124 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 186.0) internal successors, (5208), 28 states have internal predecessors, (5208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:06:14,124 INFO L186 Difference]: Start difference. First operand has 893 places, 1527 transitions, 58963 flow. Second operand 27 states and 2546 transitions. [2022-01-18 23:06:14,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 919 places, 1720 transitions, 66158 flow [2022-01-18 23:06:21,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 912 places, 1720 transitions, 65287 flow, removed 249 selfloop flow, removed 7 redundant places. [2022-01-18 23:06:21,176 INFO L242 Difference]: Finished difference. Result has 920 places, 1559 transitions, 61550 flow [2022-01-18 23:06:21,178 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=58101, PETRI_DIFFERENCE_MINUEND_PLACES=886, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=565, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=937, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=61550, PETRI_PLACES=920, PETRI_TRANSITIONS=1559} [2022-01-18 23:06:21,178 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 748 predicate places. [2022-01-18 23:06:21,178 INFO L470 AbstractCegarLoop]: Abstraction has has 920 places, 1559 transitions, 61550 flow [2022-01-18 23:06:21,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:06:21,178 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:06:21,179 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:06:21,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-18 23:06:21,179 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:06:21,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:06:21,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1559604843, now seen corresponding path program 34 times [2022-01-18 23:06:21,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:06:21,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52003698] [2022-01-18 23:06:21,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:06:21,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:06:21,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:06:21,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:06:21,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:06:21,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52003698] [2022-01-18 23:06:21,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52003698] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:06:21,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:06:21,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 23:06:21,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197105099] [2022-01-18 23:06:21,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:06:21,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:06:21,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:06:21,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:06:21,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:06:21,540 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:06:21,541 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 920 places, 1559 transitions, 61550 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:06:21,541 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:06:21,541 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:06:21,541 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:06:33,410 INFO L129 PetriNetUnfolder]: 4599/16056 cut-off events. [2022-01-18 23:06:33,410 INFO L130 PetriNetUnfolder]: For 749275/749339 co-relation queries the response was YES. [2022-01-18 23:06:33,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110891 conditions, 16056 events. 4599/16056 cut-off events. For 749275/749339 co-relation queries the response was YES. Maximal size of possible extension queue 867. Compared 190653 event pairs, 2257 based on Foata normal form. 37/15785 useless extension candidates. Maximal degree in co-relation 110589. Up to 5350 conditions per place. [2022-01-18 23:06:33,774 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 1097 selfloop transitions, 543 changer transitions 0/1703 dead transitions. [2022-01-18 23:06:33,774 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 940 places, 1703 transitions, 67691 flow [2022-01-18 23:06:33,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 23:06:33,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-18 23:06:33,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1994 transitions. [2022-01-18 23:06:33,776 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5104966717869943 [2022-01-18 23:06:33,776 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1994 transitions. [2022-01-18 23:06:33,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1994 transitions. [2022-01-18 23:06:33,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:06:33,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1994 transitions. [2022-01-18 23:06:33,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.95238095238095) internal successors, (1994), 21 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:06:33,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:06:33,779 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:06:33,779 INFO L186 Difference]: Start difference. First operand has 920 places, 1559 transitions, 61550 flow. Second operand 21 states and 1994 transitions. [2022-01-18 23:06:33,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 940 places, 1703 transitions, 67691 flow [2022-01-18 23:06:41,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 926 places, 1703 transitions, 66900 flow, removed 243 selfloop flow, removed 14 redundant places. [2022-01-18 23:06:41,605 INFO L242 Difference]: Finished difference. Result has 933 places, 1582 transitions, 62795 flow [2022-01-18 23:06:41,606 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=60761, PETRI_DIFFERENCE_MINUEND_PLACES=906, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=520, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1016, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=62795, PETRI_PLACES=933, PETRI_TRANSITIONS=1582} [2022-01-18 23:06:41,606 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 761 predicate places. [2022-01-18 23:06:41,607 INFO L470 AbstractCegarLoop]: Abstraction has has 933 places, 1582 transitions, 62795 flow [2022-01-18 23:06:41,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:06:41,607 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:06:41,607 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:06:41,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-18 23:06:41,607 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:06:41,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:06:41,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1371240753, now seen corresponding path program 35 times [2022-01-18 23:06:41,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:06:41,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832853601] [2022-01-18 23:06:41,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:06:41,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:06:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:06:41,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:06:41,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:06:41,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832853601] [2022-01-18 23:06:41,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832853601] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:06:41,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:06:41,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 23:06:41,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681922322] [2022-01-18 23:06:41,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:06:41,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:06:41,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:06:41,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:06:41,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:06:41,927 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:06:41,927 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 933 places, 1582 transitions, 62795 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:06:41,927 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:06:41,927 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:06:41,927 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:06:53,832 INFO L129 PetriNetUnfolder]: 4599/16052 cut-off events. [2022-01-18 23:06:53,832 INFO L130 PetriNetUnfolder]: For 760562/760626 co-relation queries the response was YES. [2022-01-18 23:06:54,155 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110893 conditions, 16052 events. 4599/16052 cut-off events. For 760562/760626 co-relation queries the response was YES. Maximal size of possible extension queue 867. Compared 190709 event pairs, 2398 based on Foata normal form. 37/15780 useless extension candidates. Maximal degree in co-relation 110583. Up to 5350 conditions per place. [2022-01-18 23:06:54,210 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 1125 selfloop transitions, 532 changer transitions 0/1720 dead transitions. [2022-01-18 23:06:54,210 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 952 places, 1720 transitions, 68425 flow [2022-01-18 23:06:54,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 23:06:54,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-18 23:06:54,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1909 transitions. [2022-01-18 23:06:54,213 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5131720430107527 [2022-01-18 23:06:54,213 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1909 transitions. [2022-01-18 23:06:54,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1909 transitions. [2022-01-18 23:06:54,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:06:54,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1909 transitions. [2022-01-18 23:06:54,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 95.45) internal successors, (1909), 20 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:06:54,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:06:54,217 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:06:54,217 INFO L186 Difference]: Start difference. First operand has 933 places, 1582 transitions, 62795 flow. Second operand 20 states and 1909 transitions. [2022-01-18 23:06:54,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 952 places, 1720 transitions, 68425 flow [2022-01-18 23:07:02,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 934 places, 1720 transitions, 67213 flow, removed 258 selfloop flow, removed 18 redundant places. [2022-01-18 23:07:02,345 INFO L242 Difference]: Finished difference. Result has 939 places, 1599 transitions, 63493 flow [2022-01-18 23:07:02,346 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=61583, PETRI_DIFFERENCE_MINUEND_PLACES=915, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=515, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1050, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=63493, PETRI_PLACES=939, PETRI_TRANSITIONS=1599} [2022-01-18 23:07:02,346 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 767 predicate places. [2022-01-18 23:07:02,346 INFO L470 AbstractCegarLoop]: Abstraction has has 939 places, 1599 transitions, 63493 flow [2022-01-18 23:07:02,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:07:02,347 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:07:02,347 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:07:02,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-18 23:07:02,347 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:07:02,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:07:02,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1108716475, now seen corresponding path program 36 times [2022-01-18 23:07:02,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:07:02,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922045226] [2022-01-18 23:07:02,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:07:02,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:07:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:07:02,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:07:02,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:07:02,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922045226] [2022-01-18 23:07:02,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922045226] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:07:02,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:07:02,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 23:07:02,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145979511] [2022-01-18 23:07:02,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:07:02,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:07:02,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:07:02,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:07:02,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:07:02,670 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:07:02,671 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 939 places, 1599 transitions, 63493 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:07:02,671 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:07:02,671 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:07:02,671 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:07:14,167 INFO L129 PetriNetUnfolder]: 4599/16080 cut-off events. [2022-01-18 23:07:14,167 INFO L130 PetriNetUnfolder]: For 765923/765987 co-relation queries the response was YES. [2022-01-18 23:07:14,478 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110763 conditions, 16080 events. 4599/16080 cut-off events. For 765923/765987 co-relation queries the response was YES. Maximal size of possible extension queue 874. Compared 191167 event pairs, 2449 based on Foata normal form. 37/15810 useless extension candidates. Maximal degree in co-relation 110458. Up to 5350 conditions per place. [2022-01-18 23:07:14,525 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 1140 selfloop transitions, 514 changer transitions 0/1717 dead transitions. [2022-01-18 23:07:14,525 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 959 places, 1717 transitions, 68714 flow [2022-01-18 23:07:14,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 23:07:14,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-18 23:07:14,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1999 transitions. [2022-01-18 23:07:14,527 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5117767537122376 [2022-01-18 23:07:14,527 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1999 transitions. [2022-01-18 23:07:14,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1999 transitions. [2022-01-18 23:07:14,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:07:14,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1999 transitions. [2022-01-18 23:07:14,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 95.19047619047619) internal successors, (1999), 21 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:07:14,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:07:14,530 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:07:14,530 INFO L186 Difference]: Start difference. First operand has 939 places, 1599 transitions, 63493 flow. Second operand 21 states and 1999 transitions. [2022-01-18 23:07:14,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 959 places, 1717 transitions, 68714 flow [2022-01-18 23:07:22,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 947 places, 1717 transitions, 67931 flow, removed 261 selfloop flow, removed 12 redundant places. [2022-01-18 23:07:22,154 INFO L242 Difference]: Finished difference. Result has 954 places, 1611 transitions, 64381 flow [2022-01-18 23:07:22,155 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=62711, PETRI_DIFFERENCE_MINUEND_PLACES=927, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=502, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1085, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=64381, PETRI_PLACES=954, PETRI_TRANSITIONS=1611} [2022-01-18 23:07:22,155 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 782 predicate places. [2022-01-18 23:07:22,155 INFO L470 AbstractCegarLoop]: Abstraction has has 954 places, 1611 transitions, 64381 flow [2022-01-18 23:07:22,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:07:22,155 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:07:22,155 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:07:22,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-18 23:07:22,156 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:07:22,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:07:22,156 INFO L85 PathProgramCache]: Analyzing trace with hash 371691483, now seen corresponding path program 37 times [2022-01-18 23:07:22,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:07:22,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969426153] [2022-01-18 23:07:22,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:07:22,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:07:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:07:22,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:07:22,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:07:22,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969426153] [2022-01-18 23:07:22,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969426153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:07:22,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:07:22,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 23:07:22,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740121450] [2022-01-18 23:07:22,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:07:22,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:07:22,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:07:22,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:07:22,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:07:22,467 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:07:22,468 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 954 places, 1611 transitions, 64381 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:07:22,468 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:07:22,468 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:07:22,468 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:07:34,034 INFO L129 PetriNetUnfolder]: 4596/16074 cut-off events. [2022-01-18 23:07:34,035 INFO L130 PetriNetUnfolder]: For 777747/777813 co-relation queries the response was YES. [2022-01-18 23:07:34,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111741 conditions, 16074 events. 4596/16074 cut-off events. For 777747/777813 co-relation queries the response was YES. Maximal size of possible extension queue 889. Compared 191599 event pairs, 2165 based on Foata normal form. 41/15808 useless extension candidates. Maximal degree in co-relation 111432. Up to 5350 conditions per place. [2022-01-18 23:07:34,360 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 1170 selfloop transitions, 544 changer transitions 0/1777 dead transitions. [2022-01-18 23:07:34,360 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 974 places, 1777 transitions, 71706 flow [2022-01-18 23:07:34,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 23:07:34,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-18 23:07:34,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2002 transitions. [2022-01-18 23:07:34,361 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5125448028673835 [2022-01-18 23:07:34,361 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2002 transitions. [2022-01-18 23:07:34,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2002 transitions. [2022-01-18 23:07:34,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:07:34,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2002 transitions. [2022-01-18 23:07:34,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 95.33333333333333) internal successors, (2002), 21 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:07:34,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:07:34,365 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:07:34,365 INFO L186 Difference]: Start difference. First operand has 954 places, 1611 transitions, 64381 flow. Second operand 21 states and 2002 transitions. [2022-01-18 23:07:34,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 974 places, 1777 transitions, 71706 flow [2022-01-18 23:07:42,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 962 places, 1777 transitions, 70666 flow, removed 288 selfloop flow, removed 12 redundant places. [2022-01-18 23:07:42,345 INFO L242 Difference]: Finished difference. Result has 970 places, 1641 transitions, 66240 flow [2022-01-18 23:07:42,346 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=63344, PETRI_DIFFERENCE_MINUEND_PLACES=942, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=514, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1076, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=66240, PETRI_PLACES=970, PETRI_TRANSITIONS=1641} [2022-01-18 23:07:42,346 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 798 predicate places. [2022-01-18 23:07:42,346 INFO L470 AbstractCegarLoop]: Abstraction has has 970 places, 1641 transitions, 66240 flow [2022-01-18 23:07:42,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:07:42,347 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:07:42,347 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:07:42,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-18 23:07:42,347 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:07:42,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:07:42,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1605274367, now seen corresponding path program 38 times [2022-01-18 23:07:42,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:07:42,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152619131] [2022-01-18 23:07:42,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:07:42,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:07:42,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:07:42,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:07:42,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:07:42,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152619131] [2022-01-18 23:07:42,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152619131] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:07:42,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:07:42,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 23:07:42,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660854146] [2022-01-18 23:07:42,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:07:42,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:07:42,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:07:42,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:07:42,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:07:42,668 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:07:42,668 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 970 places, 1641 transitions, 66240 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:07:42,668 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:07:42,668 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:07:42,668 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:07:54,592 INFO L129 PetriNetUnfolder]: 4596/16082 cut-off events. [2022-01-18 23:07:54,592 INFO L130 PetriNetUnfolder]: For 794914/794977 co-relation queries the response was YES. [2022-01-18 23:07:54,910 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111979 conditions, 16082 events. 4596/16082 cut-off events. For 794914/794977 co-relation queries the response was YES. Maximal size of possible extension queue 890. Compared 191752 event pairs, 2217 based on Foata normal form. 39/15813 useless extension candidates. Maximal degree in co-relation 111665. Up to 5350 conditions per place. [2022-01-18 23:07:54,959 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 1164 selfloop transitions, 542 changer transitions 0/1769 dead transitions. [2022-01-18 23:07:54,959 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 990 places, 1769 transitions, 71860 flow [2022-01-18 23:07:54,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 23:07:54,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-18 23:07:54,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1998 transitions. [2022-01-18 23:07:54,960 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.511520737327189 [2022-01-18 23:07:54,960 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1998 transitions. [2022-01-18 23:07:54,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1998 transitions. [2022-01-18 23:07:54,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:07:54,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1998 transitions. [2022-01-18 23:07:54,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 95.14285714285714) internal successors, (1998), 21 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:07:54,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:07:54,964 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:07:54,964 INFO L186 Difference]: Start difference. First operand has 970 places, 1641 transitions, 66240 flow. Second operand 21 states and 1998 transitions. [2022-01-18 23:07:54,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 990 places, 1769 transitions, 71860 flow [2022-01-18 23:08:02,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 982 places, 1769 transitions, 70517 flow, removed 264 selfloop flow, removed 8 redundant places. [2022-01-18 23:08:02,919 INFO L242 Difference]: Finished difference. Result has 988 places, 1652 transitions, 66630 flow [2022-01-18 23:08:02,920 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=64897, PETRI_DIFFERENCE_MINUEND_PLACES=962, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=531, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1099, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=66630, PETRI_PLACES=988, PETRI_TRANSITIONS=1652} [2022-01-18 23:08:02,921 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 816 predicate places. [2022-01-18 23:08:02,921 INFO L470 AbstractCegarLoop]: Abstraction has has 988 places, 1652 transitions, 66630 flow [2022-01-18 23:08:02,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:08:02,921 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:08:02,921 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:08:02,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-18 23:08:02,921 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:08:02,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:08:02,921 INFO L85 PathProgramCache]: Analyzing trace with hash 870674767, now seen corresponding path program 39 times [2022-01-18 23:08:02,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:08:02,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251670701] [2022-01-18 23:08:02,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:08:02,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:08:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:08:03,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:08:03,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:08:03,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251670701] [2022-01-18 23:08:03,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251670701] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:08:03,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:08:03,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 23:08:03,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630749511] [2022-01-18 23:08:03,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:08:03,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:08:03,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:08:03,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:08:03,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:08:03,243 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:08:03,244 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 988 places, 1652 transitions, 66630 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:08:03,244 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:08:03,244 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:08:03,244 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:08:15,117 INFO L129 PetriNetUnfolder]: 4593/16189 cut-off events. [2022-01-18 23:08:15,117 INFO L130 PetriNetUnfolder]: For 833478/833478 co-relation queries the response was YES. [2022-01-18 23:08:15,471 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112780 conditions, 16189 events. 4593/16189 cut-off events. For 833478/833478 co-relation queries the response was YES. Maximal size of possible extension queue 851. Compared 192114 event pairs, 2275 based on Foata normal form. 1/15886 useless extension candidates. Maximal degree in co-relation 112461. Up to 4322 conditions per place. [2022-01-18 23:08:15,518 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 1148 selfloop transitions, 609 changer transitions 0/1820 dead transitions. [2022-01-18 23:08:15,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1008 places, 1820 transitions, 74445 flow [2022-01-18 23:08:15,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 23:08:15,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-18 23:08:15,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1990 transitions. [2022-01-18 23:08:15,520 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5094726062467998 [2022-01-18 23:08:15,520 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1990 transitions. [2022-01-18 23:08:15,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1990 transitions. [2022-01-18 23:08:15,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:08:15,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1990 transitions. [2022-01-18 23:08:15,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.76190476190476) internal successors, (1990), 21 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:08:15,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:08:15,523 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:08:15,523 INFO L186 Difference]: Start difference. First operand has 988 places, 1652 transitions, 66630 flow. Second operand 21 states and 1990 transitions. [2022-01-18 23:08:15,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1008 places, 1820 transitions, 74445 flow [2022-01-18 23:08:23,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 997 places, 1820 transitions, 72999 flow, removed 275 selfloop flow, removed 11 redundant places. [2022-01-18 23:08:23,282 INFO L242 Difference]: Finished difference. Result has 1006 places, 1685 transitions, 68408 flow [2022-01-18 23:08:23,283 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=65214, PETRI_DIFFERENCE_MINUEND_PLACES=977, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=576, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1052, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=68408, PETRI_PLACES=1006, PETRI_TRANSITIONS=1685} [2022-01-18 23:08:23,283 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 834 predicate places. [2022-01-18 23:08:23,284 INFO L470 AbstractCegarLoop]: Abstraction has has 1006 places, 1685 transitions, 68408 flow [2022-01-18 23:08:23,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:08:23,284 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:08:23,284 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:08:23,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-18 23:08:23,284 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:08:23,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:08:23,284 INFO L85 PathProgramCache]: Analyzing trace with hash -2005255065, now seen corresponding path program 40 times [2022-01-18 23:08:23,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:08:23,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825248087] [2022-01-18 23:08:23,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:08:23,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:08:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:08:23,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:08:23,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:08:23,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825248087] [2022-01-18 23:08:23,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825248087] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:08:23,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:08:23,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 23:08:23,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657103710] [2022-01-18 23:08:23,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:08:23,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:08:23,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:08:23,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:08:23,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:08:23,609 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:08:23,609 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1006 places, 1685 transitions, 68408 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:08:23,609 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:08:23,609 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:08:23,610 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:08:36,186 INFO L129 PetriNetUnfolder]: 4590/16216 cut-off events. [2022-01-18 23:08:36,187 INFO L130 PetriNetUnfolder]: For 846754/846815 co-relation queries the response was YES. [2022-01-18 23:08:36,563 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113821 conditions, 16216 events. 4590/16216 cut-off events. For 846754/846815 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 193642 event pairs, 2158 based on Foata normal form. 39/15937 useless extension candidates. Maximal degree in co-relation 113496. Up to 5333 conditions per place. [2022-01-18 23:08:36,612 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 1183 selfloop transitions, 609 changer transitions 0/1855 dead transitions. [2022-01-18 23:08:36,613 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1026 places, 1855 transitions, 76207 flow [2022-01-18 23:08:36,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 23:08:36,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-18 23:08:36,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1999 transitions. [2022-01-18 23:08:36,614 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5117767537122376 [2022-01-18 23:08:36,614 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1999 transitions. [2022-01-18 23:08:36,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1999 transitions. [2022-01-18 23:08:36,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:08:36,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1999 transitions. [2022-01-18 23:08:36,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 95.19047619047619) internal successors, (1999), 21 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:08:36,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:08:36,617 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:08:36,617 INFO L186 Difference]: Start difference. First operand has 1006 places, 1685 transitions, 68408 flow. Second operand 21 states and 1999 transitions. [2022-01-18 23:08:36,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1026 places, 1855 transitions, 76207 flow [2022-01-18 23:08:45,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1018 places, 1855 transitions, 75373 flow, removed 250 selfloop flow, removed 8 redundant places. [2022-01-18 23:08:45,957 INFO L242 Difference]: Finished difference. Result has 1027 places, 1715 transitions, 70846 flow [2022-01-18 23:08:45,959 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=67574, PETRI_DIFFERENCE_MINUEND_PLACES=998, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=579, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1085, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=70846, PETRI_PLACES=1027, PETRI_TRANSITIONS=1715} [2022-01-18 23:08:45,959 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 855 predicate places. [2022-01-18 23:08:45,959 INFO L470 AbstractCegarLoop]: Abstraction has has 1027 places, 1715 transitions, 70846 flow [2022-01-18 23:08:45,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:08:45,960 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:08:45,960 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:08:45,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-18 23:08:45,960 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:08:45,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:08:45,960 INFO L85 PathProgramCache]: Analyzing trace with hash 419014047, now seen corresponding path program 41 times [2022-01-18 23:08:45,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:08:45,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951251323] [2022-01-18 23:08:45,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:08:45,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:08:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:08:46,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:08:46,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:08:46,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951251323] [2022-01-18 23:08:46,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951251323] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:08:46,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:08:46,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 23:08:46,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287636489] [2022-01-18 23:08:46,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:08:46,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:08:46,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:08:46,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:08:46,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:08:46,278 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:08:46,279 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1027 places, 1715 transitions, 70846 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:08:46,279 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:08:46,279 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:08:46,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:08:59,109 INFO L129 PetriNetUnfolder]: 4590/16296 cut-off events. [2022-01-18 23:08:59,109 INFO L130 PetriNetUnfolder]: For 908976/908976 co-relation queries the response was YES. [2022-01-18 23:08:59,527 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114445 conditions, 16296 events. 4590/16296 cut-off events. For 908976/908976 co-relation queries the response was YES. Maximal size of possible extension queue 863. Compared 193854 event pairs, 2506 based on Foata normal form. 1/15977 useless extension candidates. Maximal degree in co-relation 114111. Up to 5333 conditions per place. [2022-01-18 23:08:59,578 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 1165 selfloop transitions, 639 changer transitions 0/1867 dead transitions. [2022-01-18 23:08:59,578 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1048 places, 1867 transitions, 77509 flow [2022-01-18 23:08:59,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 23:08:59,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-18 23:08:59,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2089 transitions. [2022-01-18 23:08:59,580 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5105083088954057 [2022-01-18 23:08:59,580 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2089 transitions. [2022-01-18 23:08:59,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2089 transitions. [2022-01-18 23:08:59,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:08:59,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2089 transitions. [2022-01-18 23:08:59,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 94.95454545454545) internal successors, (2089), 22 states have internal predecessors, (2089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:08:59,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 186.0) internal successors, (4278), 23 states have internal predecessors, (4278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:08:59,584 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 186.0) internal successors, (4278), 23 states have internal predecessors, (4278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:08:59,584 INFO L186 Difference]: Start difference. First operand has 1027 places, 1715 transitions, 70846 flow. Second operand 22 states and 2089 transitions. [2022-01-18 23:08:59,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1048 places, 1867 transitions, 77509 flow [2022-01-18 23:09:08,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1038 places, 1867 transitions, 76652 flow, removed 266 selfloop flow, removed 10 redundant places. [2022-01-18 23:09:08,517 INFO L242 Difference]: Finished difference. Result has 1047 places, 1731 transitions, 72120 flow [2022-01-18 23:09:08,518 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=69993, PETRI_DIFFERENCE_MINUEND_PLACES=1017, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1715, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=623, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1077, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=72120, PETRI_PLACES=1047, PETRI_TRANSITIONS=1731} [2022-01-18 23:09:08,518 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 875 predicate places. [2022-01-18 23:09:08,518 INFO L470 AbstractCegarLoop]: Abstraction has has 1047 places, 1731 transitions, 72120 flow [2022-01-18 23:09:08,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:09:08,518 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:09:08,519 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:09:08,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-18 23:09:08,519 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:09:08,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:09:08,519 INFO L85 PathProgramCache]: Analyzing trace with hash 458753233, now seen corresponding path program 42 times [2022-01-18 23:09:08,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:09:08,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580131835] [2022-01-18 23:09:08,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:09:08,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:09:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:09:08,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:09:08,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:09:08,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580131835] [2022-01-18 23:09:08,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580131835] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:09:08,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:09:08,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 23:09:08,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203513095] [2022-01-18 23:09:08,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:09:08,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:09:08,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:09:08,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:09:08,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:09:08,830 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:09:08,831 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1047 places, 1731 transitions, 72120 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:09:08,831 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:09:08,831 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:09:08,831 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:09:22,026 INFO L129 PetriNetUnfolder]: 4587/16324 cut-off events. [2022-01-18 23:09:22,027 INFO L130 PetriNetUnfolder]: For 940233/940233 co-relation queries the response was YES. [2022-01-18 23:09:22,419 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116041 conditions, 16324 events. 4587/16324 cut-off events. For 940233/940233 co-relation queries the response was YES. Maximal size of possible extension queue 856. Compared 193972 event pairs, 2730 based on Foata normal form. 1/15977 useless extension candidates. Maximal degree in co-relation 115701. Up to 6679 conditions per place. [2022-01-18 23:09:22,468 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 1180 selfloop transitions, 641 changer transitions 0/1884 dead transitions. [2022-01-18 23:09:22,469 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1067 places, 1884 transitions, 79366 flow [2022-01-18 23:09:22,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 23:09:22,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-18 23:09:22,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1992 transitions. [2022-01-18 23:09:22,470 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5099846390168971 [2022-01-18 23:09:22,470 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1992 transitions. [2022-01-18 23:09:22,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1992 transitions. [2022-01-18 23:09:22,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:09:22,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1992 transitions. [2022-01-18 23:09:22,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.85714285714286) internal successors, (1992), 21 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:09:22,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:09:22,474 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:09:22,474 INFO L186 Difference]: Start difference. First operand has 1047 places, 1731 transitions, 72120 flow. Second operand 21 states and 1992 transitions. [2022-01-18 23:09:22,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1067 places, 1884 transitions, 79366 flow [2022-01-18 23:09:31,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1059 places, 1884 transitions, 78569 flow, removed 216 selfloop flow, removed 8 redundant places. [2022-01-18 23:09:31,916 INFO L242 Difference]: Finished difference. Result has 1068 places, 1766 transitions, 74667 flow [2022-01-18 23:09:31,917 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=71343, PETRI_DIFFERENCE_MINUEND_PLACES=1039, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1731, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=606, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=74667, PETRI_PLACES=1068, PETRI_TRANSITIONS=1766} [2022-01-18 23:09:31,917 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 896 predicate places. [2022-01-18 23:09:31,917 INFO L470 AbstractCegarLoop]: Abstraction has has 1068 places, 1766 transitions, 74667 flow [2022-01-18 23:09:31,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:09:31,918 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:09:31,918 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:09:31,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-18 23:09:31,918 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:09:31,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:09:31,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1256778945, now seen corresponding path program 43 times [2022-01-18 23:09:31,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:09:31,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382990698] [2022-01-18 23:09:31,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:09:31,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:09:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:09:32,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:09:32,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:09:32,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382990698] [2022-01-18 23:09:32,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382990698] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:09:32,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:09:32,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 23:09:32,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744508121] [2022-01-18 23:09:32,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:09:32,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:09:32,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:09:32,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:09:32,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:09:32,241 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:09:32,242 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1068 places, 1766 transitions, 74667 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:09:32,242 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:09:32,242 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:09:32,242 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:09:45,435 INFO L129 PetriNetUnfolder]: 4584/16384 cut-off events. [2022-01-18 23:09:45,436 INFO L130 PetriNetUnfolder]: For 989609/989609 co-relation queries the response was YES. [2022-01-18 23:09:45,797 INFO L84 FinitePrefix]: Finished finitePrefix Result has 117439 conditions, 16384 events. 4584/16384 cut-off events. For 989609/989609 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 195094 event pairs, 2774 based on Foata normal form. 1/16031 useless extension candidates. Maximal degree in co-relation 117090. Up to 6679 conditions per place. [2022-01-18 23:09:45,850 INFO L132 encePairwiseOnDemand]: 163/186 looper letters, 1199 selfloop transitions, 639 changer transitions 0/1901 dead transitions. [2022-01-18 23:09:45,850 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1087 places, 1901 transitions, 81528 flow [2022-01-18 23:09:45,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 23:09:45,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-18 23:09:45,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1902 transitions. [2022-01-18 23:09:45,851 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5112903225806451 [2022-01-18 23:09:45,851 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1902 transitions. [2022-01-18 23:09:45,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1902 transitions. [2022-01-18 23:09:45,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:09:45,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1902 transitions. [2022-01-18 23:09:45,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 95.1) internal successors, (1902), 20 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:09:45,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:09:45,855 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:09:45,855 INFO L186 Difference]: Start difference. First operand has 1068 places, 1766 transitions, 74667 flow. Second operand 20 states and 1902 transitions. [2022-01-18 23:09:45,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1087 places, 1901 transitions, 81528 flow [2022-01-18 23:09:55,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1077 places, 1901 transitions, 80545 flow, removed 293 selfloop flow, removed 10 redundant places. [2022-01-18 23:09:55,468 INFO L242 Difference]: Finished difference. Result has 1083 places, 1790 transitions, 76811 flow [2022-01-18 23:09:55,469 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=73754, PETRI_DIFFERENCE_MINUEND_PLACES=1058, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1766, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=615, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=76811, PETRI_PLACES=1083, PETRI_TRANSITIONS=1790} [2022-01-18 23:09:55,469 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 911 predicate places. [2022-01-18 23:09:55,470 INFO L470 AbstractCegarLoop]: Abstraction has has 1083 places, 1790 transitions, 76811 flow [2022-01-18 23:09:55,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:09:55,470 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:09:55,470 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:09:55,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-18 23:09:55,470 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:09:55,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:09:55,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1147631501, now seen corresponding path program 44 times [2022-01-18 23:09:55,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:09:55,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859694560] [2022-01-18 23:09:55,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:09:55,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:09:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:09:55,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:09:55,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:09:55,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859694560] [2022-01-18 23:09:55,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859694560] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:09:55,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:09:55,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 23:09:55,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097537460] [2022-01-18 23:09:55,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:09:55,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:09:55,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:09:55,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:09:55,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:09:55,778 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:09:55,778 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1083 places, 1790 transitions, 76811 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:09:55,778 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:09:55,778 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:09:55,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:10:09,330 INFO L129 PetriNetUnfolder]: 4581/16409 cut-off events. [2022-01-18 23:10:09,331 INFO L130 PetriNetUnfolder]: For 1030221/1030221 co-relation queries the response was YES. [2022-01-18 23:10:09,722 INFO L84 FinitePrefix]: Finished finitePrefix Result has 118423 conditions, 16409 events. 4581/16409 cut-off events. For 1030221/1030221 co-relation queries the response was YES. Maximal size of possible extension queue 852. Compared 195616 event pairs, 2654 based on Foata normal form. 1/16063 useless extension candidates. Maximal degree in co-relation 118072. Up to 6443 conditions per place. [2022-01-18 23:10:09,770 INFO L132 encePairwiseOnDemand]: 163/186 looper letters, 1174 selfloop transitions, 670 changer transitions 0/1907 dead transitions. [2022-01-18 23:10:09,771 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1102 places, 1907 transitions, 83495 flow [2022-01-18 23:10:09,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 23:10:09,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-18 23:10:09,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1883 transitions. [2022-01-18 23:10:09,772 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5061827956989248 [2022-01-18 23:10:09,772 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1883 transitions. [2022-01-18 23:10:09,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1883 transitions. [2022-01-18 23:10:09,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:10:09,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1883 transitions. [2022-01-18 23:10:09,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.15) internal successors, (1883), 20 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:10:09,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:10:09,775 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:10:09,775 INFO L186 Difference]: Start difference. First operand has 1083 places, 1790 transitions, 76811 flow. Second operand 20 states and 1883 transitions. [2022-01-18 23:10:09,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1102 places, 1907 transitions, 83495 flow [2022-01-18 23:10:19,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1096 places, 1907 transitions, 82834 flow, removed 229 selfloop flow, removed 6 redundant places. [2022-01-18 23:10:19,286 INFO L242 Difference]: Finished difference. Result has 1103 places, 1818 transitions, 79484 flow [2022-01-18 23:10:19,288 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=76150, PETRI_DIFFERENCE_MINUEND_PLACES=1077, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1790, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=642, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=79484, PETRI_PLACES=1103, PETRI_TRANSITIONS=1818} [2022-01-18 23:10:19,288 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 931 predicate places. [2022-01-18 23:10:19,288 INFO L470 AbstractCegarLoop]: Abstraction has has 1103 places, 1818 transitions, 79484 flow [2022-01-18 23:10:19,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:10:19,288 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:10:19,288 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:10:19,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-18 23:10:19,288 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:10:19,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:10:19,289 INFO L85 PathProgramCache]: Analyzing trace with hash 414742769, now seen corresponding path program 45 times [2022-01-18 23:10:19,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:10:19,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800523387] [2022-01-18 23:10:19,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:10:19,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:10:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:10:19,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:10:19,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:10:19,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800523387] [2022-01-18 23:10:19,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800523387] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:10:19,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:10:19,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 23:10:19,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636667403] [2022-01-18 23:10:19,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:10:19,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:10:19,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:10:19,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:10:19,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:10:19,604 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:10:19,605 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1103 places, 1818 transitions, 79484 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:10:19,605 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:10:19,605 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:10:19,605 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:10:33,664 INFO L129 PetriNetUnfolder]: 4578/16480 cut-off events. [2022-01-18 23:10:33,664 INFO L130 PetriNetUnfolder]: For 1091673/1091673 co-relation queries the response was YES. [2022-01-18 23:10:34,004 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119968 conditions, 16480 events. 4578/16480 cut-off events. For 1091673/1091673 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 196757 event pairs, 2734 based on Foata normal form. 1/16126 useless extension candidates. Maximal degree in co-relation 119610. Up to 6443 conditions per place. [2022-01-18 23:10:34,048 INFO L132 encePairwiseOnDemand]: 163/186 looper letters, 1214 selfloop transitions, 666 changer transitions 0/1943 dead transitions. [2022-01-18 23:10:34,049 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1122 places, 1943 transitions, 86286 flow [2022-01-18 23:10:34,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 23:10:34,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-18 23:10:34,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1899 transitions. [2022-01-18 23:10:34,050 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.510483870967742 [2022-01-18 23:10:34,050 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1899 transitions. [2022-01-18 23:10:34,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1899 transitions. [2022-01-18 23:10:34,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:10:34,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1899 transitions. [2022-01-18 23:10:34,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.95) internal successors, (1899), 20 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:10:34,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:10:34,053 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:10:34,053 INFO L186 Difference]: Start difference. First operand has 1103 places, 1818 transitions, 79484 flow. Second operand 20 states and 1899 transitions. [2022-01-18 23:10:34,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1122 places, 1943 transitions, 86286 flow [2022-01-18 23:10:44,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1111 places, 1943 transitions, 85266 flow, removed 300 selfloop flow, removed 11 redundant places. [2022-01-18 23:10:44,167 INFO L242 Difference]: Finished difference. Result has 1117 places, 1845 transitions, 81822 flow [2022-01-18 23:10:44,169 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=78464, PETRI_DIFFERENCE_MINUEND_PLACES=1092, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1818, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=639, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=81822, PETRI_PLACES=1117, PETRI_TRANSITIONS=1845} [2022-01-18 23:10:44,169 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 945 predicate places. [2022-01-18 23:10:44,169 INFO L470 AbstractCegarLoop]: Abstraction has has 1117 places, 1845 transitions, 81822 flow [2022-01-18 23:10:44,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:10:44,170 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:10:44,170 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:10:44,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-18 23:10:44,170 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:10:44,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:10:44,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1328546133, now seen corresponding path program 46 times [2022-01-18 23:10:44,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:10:44,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234196160] [2022-01-18 23:10:44,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:10:44,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:10:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:10:44,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:10:44,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:10:44,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234196160] [2022-01-18 23:10:44,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234196160] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:10:44,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:10:44,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 23:10:44,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138796147] [2022-01-18 23:10:44,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:10:44,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:10:44,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:10:44,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:10:44,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:10:44,487 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-01-18 23:10:44,488 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1117 places, 1845 transitions, 81822 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:10:44,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:10:44,488 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-01-18 23:10:44,488 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:10:58,682 INFO L129 PetriNetUnfolder]: 4578/16482 cut-off events. [2022-01-18 23:10:58,682 INFO L130 PetriNetUnfolder]: For 1125189/1125189 co-relation queries the response was YES. [2022-01-18 23:10:59,042 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120197 conditions, 16482 events. 4578/16482 cut-off events. For 1125189/1125189 co-relation queries the response was YES. Maximal size of possible extension queue 856. Compared 196939 event pairs, 2728 based on Foata normal form. 1/16129 useless extension candidates. Maximal degree in co-relation 119837. Up to 6443 conditions per place. [2022-01-18 23:10:59,091 INFO L132 encePairwiseOnDemand]: 163/186 looper letters, 1206 selfloop transitions, 669 changer transitions 0/1937 dead transitions. [2022-01-18 23:10:59,091 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1134 places, 1937 transitions, 86974 flow [2022-01-18 23:10:59,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 23:10:59,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-18 23:10:59,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1891 transitions. [2022-01-18 23:10:59,092 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2022-01-18 23:10:59,092 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1891 transitions. [2022-01-18 23:10:59,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1891 transitions. [2022-01-18 23:10:59,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:10:59,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1891 transitions. [2022-01-18 23:10:59,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.55) internal successors, (1891), 20 states have internal predecessors, (1891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:10:59,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:10:59,096 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:10:59,096 INFO L186 Difference]: Start difference. First operand has 1117 places, 1845 transitions, 81822 flow. Second operand 20 states and 1891 transitions. [2022-01-18 23:10:59,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1134 places, 1937 transitions, 86974 flow [2022-01-18 23:11:10,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1124 places, 1937 transitions, 85949 flow, removed 307 selfloop flow, removed 10 redundant places. [2022-01-18 23:11:10,231 INFO L242 Difference]: Finished difference. Result has 1125 places, 1844 transitions, 82079 flow [2022-01-18 23:11:10,232 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=80707, PETRI_DIFFERENCE_MINUEND_PLACES=1105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1843, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=668, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=82079, PETRI_PLACES=1125, PETRI_TRANSITIONS=1844} [2022-01-18 23:11:10,232 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 953 predicate places. [2022-01-18 23:11:10,232 INFO L470 AbstractCegarLoop]: Abstraction has has 1125 places, 1844 transitions, 82079 flow [2022-01-18 23:11:10,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:11:10,232 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:11:10,233 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:11:10,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-18 23:11:10,233 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:11:10,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:11:10,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1836867097, now seen corresponding path program 1 times [2022-01-18 23:11:10,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:11:10,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004122022] [2022-01-18 23:11:10,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:11:10,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:11:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:11:10,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:11:10,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:11:10,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004122022] [2022-01-18 23:11:10,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004122022] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:11:10,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:11:10,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-01-18 23:11:10,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799957233] [2022-01-18 23:11:10,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:11:10,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 23:11:10,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:11:10,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 23:11:10,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=495, Unknown=0, NotChecked=0, Total=552 [2022-01-18 23:11:10,899 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 186 [2022-01-18 23:11:10,900 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1125 places, 1844 transitions, 82079 flow. Second operand has 24 states, 24 states have (on average 87.83333333333333) internal successors, (2108), 24 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:11:10,900 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:11:10,900 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 186 [2022-01-18 23:11:10,900 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:11:29,296 INFO L129 PetriNetUnfolder]: 5695/21128 cut-off events. [2022-01-18 23:11:29,296 INFO L130 PetriNetUnfolder]: For 1260940/1260982 co-relation queries the response was YES. [2022-01-18 23:11:29,964 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143928 conditions, 21128 events. 5695/21128 cut-off events. For 1260940/1260982 co-relation queries the response was YES. Maximal size of possible extension queue 1319. Compared 273688 event pairs, 2157 based on Foata normal form. 14/20654 useless extension candidates. Maximal degree in co-relation 143570. Up to 5983 conditions per place. [2022-01-18 23:11:30,027 INFO L132 encePairwiseOnDemand]: 154/186 looper letters, 1395 selfloop transitions, 831 changer transitions 31/2455 dead transitions. [2022-01-18 23:11:30,027 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1154 places, 2455 transitions, 106917 flow [2022-01-18 23:11:30,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 23:11:30,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-18 23:11:30,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2743 transitions. [2022-01-18 23:11:30,029 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4915770609318996 [2022-01-18 23:11:30,029 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2743 transitions. [2022-01-18 23:11:30,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2743 transitions. [2022-01-18 23:11:30,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:11:30,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2743 transitions. [2022-01-18 23:11:30,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 91.43333333333334) internal successors, (2743), 30 states have internal predecessors, (2743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:11:30,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 186.0) internal successors, (5766), 31 states have internal predecessors, (5766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:11:30,034 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 186.0) internal successors, (5766), 31 states have internal predecessors, (5766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:11:30,034 INFO L186 Difference]: Start difference. First operand has 1125 places, 1844 transitions, 82079 flow. Second operand 30 states and 2743 transitions. [2022-01-18 23:11:30,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1154 places, 2455 transitions, 106917 flow [2022-01-18 23:11:40,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1085 places, 2455 transitions, 105016 flow, removed 336 selfloop flow, removed 69 redundant places. [2022-01-18 23:11:40,288 INFO L242 Difference]: Finished difference. Result has 1100 places, 2110 transitions, 91026 flow [2022-01-18 23:11:40,289 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=80320, PETRI_DIFFERENCE_MINUEND_PLACES=1056, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1844, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=588, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=91026, PETRI_PLACES=1100, PETRI_TRANSITIONS=2110} [2022-01-18 23:11:40,290 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 928 predicate places. [2022-01-18 23:11:40,290 INFO L470 AbstractCegarLoop]: Abstraction has has 1100 places, 2110 transitions, 91026 flow [2022-01-18 23:11:40,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 87.83333333333333) internal successors, (2108), 24 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:11:40,290 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:11:40,290 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:11:40,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-18 23:11:40,290 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:11:40,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:11:40,291 INFO L85 PathProgramCache]: Analyzing trace with hash 255512507, now seen corresponding path program 2 times [2022-01-18 23:11:40,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:11:40,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896634905] [2022-01-18 23:11:40,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:11:40,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:11:40,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:11:41,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:11:41,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:11:41,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896634905] [2022-01-18 23:11:41,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896634905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:11:41,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:11:41,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-18 23:11:41,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283714646] [2022-01-18 23:11:41,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:11:41,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 23:11:41,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:11:41,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 23:11:41,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2022-01-18 23:11:41,022 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 186 [2022-01-18 23:11:41,023 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1100 places, 2110 transitions, 91026 flow. Second operand has 26 states, 26 states have (on average 87.61538461538461) internal successors, (2278), 26 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:11:41,023 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:11:41,023 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 186 [2022-01-18 23:11:41,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:12:03,132 INFO L129 PetriNetUnfolder]: 6469/24431 cut-off events. [2022-01-18 23:12:03,132 INFO L130 PetriNetUnfolder]: For 1449150/1449219 co-relation queries the response was YES. [2022-01-18 23:12:03,885 INFO L84 FinitePrefix]: Finished finitePrefix Result has 173709 conditions, 24431 events. 6469/24431 cut-off events. For 1449150/1449219 co-relation queries the response was YES. Maximal size of possible extension queue 1609. Compared 327739 event pairs, 2540 based on Foata normal form. 32/23978 useless extension candidates. Maximal degree in co-relation 173397. Up to 10552 conditions per place. [2022-01-18 23:12:03,959 INFO L132 encePairwiseOnDemand]: 155/186 looper letters, 1420 selfloop transitions, 882 changer transitions 87/2587 dead transitions. [2022-01-18 23:12:03,960 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1124 places, 2587 transitions, 111810 flow [2022-01-18 23:12:03,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 23:12:03,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-01-18 23:12:03,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2917 transitions. [2022-01-18 23:12:03,962 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.49008736559139787 [2022-01-18 23:12:03,962 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2917 transitions. [2022-01-18 23:12:03,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2917 transitions. [2022-01-18 23:12:03,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:12:03,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2917 transitions. [2022-01-18 23:12:03,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 91.15625) internal successors, (2917), 32 states have internal predecessors, (2917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:03,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 186.0) internal successors, (6138), 33 states have internal predecessors, (6138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:03,967 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 186.0) internal successors, (6138), 33 states have internal predecessors, (6138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:03,967 INFO L186 Difference]: Start difference. First operand has 1100 places, 2110 transitions, 91026 flow. Second operand 32 states and 2917 transitions. [2022-01-18 23:12:03,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1124 places, 2587 transitions, 111810 flow [2022-01-18 23:12:15,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1107 places, 2587 transitions, 110197 flow, removed 178 selfloop flow, removed 17 redundant places. [2022-01-18 23:12:15,863 INFO L242 Difference]: Finished difference. Result has 1119 places, 2319 transitions, 98905 flow [2022-01-18 23:12:15,864 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=89602, PETRI_DIFFERENCE_MINUEND_PLACES=1076, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=702, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=98905, PETRI_PLACES=1119, PETRI_TRANSITIONS=2319} [2022-01-18 23:12:15,865 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 947 predicate places. [2022-01-18 23:12:15,865 INFO L470 AbstractCegarLoop]: Abstraction has has 1119 places, 2319 transitions, 98905 flow [2022-01-18 23:12:15,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 87.61538461538461) internal successors, (2278), 26 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:15,865 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:12:15,865 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:12:15,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-18 23:12:15,865 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:12:15,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:12:15,866 INFO L85 PathProgramCache]: Analyzing trace with hash -85520519, now seen corresponding path program 3 times [2022-01-18 23:12:15,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:12:15,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704166699] [2022-01-18 23:12:15,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:12:15,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:12:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:12:16,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:12:16,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:12:16,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704166699] [2022-01-18 23:12:16,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704166699] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:12:16,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:12:16,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-01-18 23:12:16,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27215134] [2022-01-18 23:12:16,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:12:16,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 23:12:16,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:12:16,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 23:12:16,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2022-01-18 23:12:16,770 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 186 [2022-01-18 23:12:16,771 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1119 places, 2319 transitions, 98905 flow. Second operand has 31 states, 31 states have (on average 86.2258064516129) internal successors, (2673), 31 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:16,771 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:12:16,771 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 186 [2022-01-18 23:12:16,771 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:12:40,577 INFO L129 PetriNetUnfolder]: 6367/24320 cut-off events. [2022-01-18 23:12:40,578 INFO L130 PetriNetUnfolder]: For 1457570/1457748 co-relation queries the response was YES. [2022-01-18 23:12:41,324 INFO L84 FinitePrefix]: Finished finitePrefix Result has 177742 conditions, 24320 events. 6367/24320 cut-off events. For 1457570/1457748 co-relation queries the response was YES. Maximal size of possible extension queue 1611. Compared 328295 event pairs, 2225 based on Foata normal form. 92/23834 useless extension candidates. Maximal degree in co-relation 177424. Up to 6232 conditions per place. [2022-01-18 23:12:41,393 INFO L132 encePairwiseOnDemand]: 148/186 looper letters, 1470 selfloop transitions, 986 changer transitions 69/2722 dead transitions. [2022-01-18 23:12:41,393 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1146 places, 2722 transitions, 118494 flow [2022-01-18 23:12:41,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 23:12:41,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-18 23:12:41,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3220 transitions. [2022-01-18 23:12:41,395 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.480884109916368 [2022-01-18 23:12:41,395 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3220 transitions. [2022-01-18 23:12:41,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3220 transitions. [2022-01-18 23:12:41,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:12:41,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3220 transitions. [2022-01-18 23:12:41,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 89.44444444444444) internal successors, (3220), 36 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:41,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 186.0) internal successors, (6882), 37 states have internal predecessors, (6882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:41,401 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 186.0) internal successors, (6882), 37 states have internal predecessors, (6882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:41,401 INFO L186 Difference]: Start difference. First operand has 1119 places, 2319 transitions, 98905 flow. Second operand 36 states and 3220 transitions. [2022-01-18 23:12:41,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1146 places, 2722 transitions, 118494 flow [2022-01-18 23:12:53,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1129 places, 2722 transitions, 117801 flow, removed 231 selfloop flow, removed 17 redundant places. [2022-01-18 23:12:53,910 INFO L242 Difference]: Finished difference. Result has 1138 places, 2371 transitions, 102353 flow [2022-01-18 23:12:53,912 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=98419, PETRI_DIFFERENCE_MINUEND_PLACES=1094, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=929, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=102353, PETRI_PLACES=1138, PETRI_TRANSITIONS=2371} [2022-01-18 23:12:53,912 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 966 predicate places. [2022-01-18 23:12:53,913 INFO L470 AbstractCegarLoop]: Abstraction has has 1138 places, 2371 transitions, 102353 flow [2022-01-18 23:12:53,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 86.2258064516129) internal successors, (2673), 31 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:53,913 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:12:53,913 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:12:53,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-18 23:12:53,913 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:12:53,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:12:53,913 INFO L85 PathProgramCache]: Analyzing trace with hash -312789985, now seen corresponding path program 4 times [2022-01-18 23:12:53,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:12:53,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675203645] [2022-01-18 23:12:53,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:12:53,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:12:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:12:54,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:12:54,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:12:54,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675203645] [2022-01-18 23:12:54,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675203645] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:12:54,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:12:54,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-01-18 23:12:54,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000288290] [2022-01-18 23:12:54,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:12:54,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 23:12:54,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:12:54,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 23:12:54,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2022-01-18 23:12:54,611 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 186 [2022-01-18 23:12:54,612 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1138 places, 2371 transitions, 102353 flow. Second operand has 24 states, 24 states have (on average 87.83333333333333) internal successors, (2108), 24 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:54,612 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:12:54,612 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 186 [2022-01-18 23:12:54,612 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:13:17,932 INFO L129 PetriNetUnfolder]: 6317/23863 cut-off events. [2022-01-18 23:13:17,933 INFO L130 PetriNetUnfolder]: For 1485428/1485504 co-relation queries the response was YES. [2022-01-18 23:13:18,617 INFO L84 FinitePrefix]: Finished finitePrefix Result has 180188 conditions, 23863 events. 6317/23863 cut-off events. For 1485428/1485504 co-relation queries the response was YES. Maximal size of possible extension queue 1595. Compared 319652 event pairs, 2276 based on Foata normal form. 36/23333 useless extension candidates. Maximal degree in co-relation 179868. Up to 6232 conditions per place. [2022-01-18 23:13:18,692 INFO L132 encePairwiseOnDemand]: 154/186 looper letters, 1493 selfloop transitions, 940 changer transitions 48/2679 dead transitions. [2022-01-18 23:13:18,692 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1160 places, 2679 transitions, 118163 flow [2022-01-18 23:13:18,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 23:13:18,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-01-18 23:13:18,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2832 transitions. [2022-01-18 23:13:18,694 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4911550468262227 [2022-01-18 23:13:18,694 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2832 transitions. [2022-01-18 23:13:18,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2832 transitions. [2022-01-18 23:13:18,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:13:18,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2832 transitions. [2022-01-18 23:13:18,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 91.35483870967742) internal successors, (2832), 31 states have internal predecessors, (2832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:13:18,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 186.0) internal successors, (5952), 32 states have internal predecessors, (5952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:13:18,699 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 186.0) internal successors, (5952), 32 states have internal predecessors, (5952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:13:18,699 INFO L186 Difference]: Start difference. First operand has 1138 places, 2371 transitions, 102353 flow. Second operand 31 states and 2832 transitions. [2022-01-18 23:13:18,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1160 places, 2679 transitions, 118163 flow [2022-01-18 23:13:31,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1132 places, 2679 transitions, 116399 flow, removed 107 selfloop flow, removed 28 redundant places. [2022-01-18 23:13:31,100 INFO L242 Difference]: Finished difference. Result has 1137 places, 2359 transitions, 102097 flow [2022-01-18 23:13:31,102 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=100617, PETRI_DIFFERENCE_MINUEND_PLACES=1102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=940, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=102097, PETRI_PLACES=1137, PETRI_TRANSITIONS=2359} [2022-01-18 23:13:31,102 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 965 predicate places. [2022-01-18 23:13:31,102 INFO L470 AbstractCegarLoop]: Abstraction has has 1137 places, 2359 transitions, 102097 flow [2022-01-18 23:13:31,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 87.83333333333333) internal successors, (2108), 24 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:13:31,103 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:13:31,103 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:13:31,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-18 23:13:31,103 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:13:31,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:13:31,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1163754099, now seen corresponding path program 5 times [2022-01-18 23:13:31,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:13:31,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706758190] [2022-01-18 23:13:31,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:13:31,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:13:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:13:31,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:13:31,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:13:31,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706758190] [2022-01-18 23:13:31,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706758190] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:13:31,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:13:31,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-18 23:13:31,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298011011] [2022-01-18 23:13:31,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:13:31,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 23:13:31,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:13:31,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 23:13:31,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2022-01-18 23:13:31,916 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 186 [2022-01-18 23:13:31,916 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1137 places, 2359 transitions, 102097 flow. Second operand has 26 states, 26 states have (on average 87.61538461538461) internal successors, (2278), 26 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:13:31,916 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:13:31,917 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 186 [2022-01-18 23:13:31,917 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:13:55,270 INFO L129 PetriNetUnfolder]: 6305/23958 cut-off events. [2022-01-18 23:13:55,270 INFO L130 PetriNetUnfolder]: For 1468560/1468624 co-relation queries the response was YES. [2022-01-18 23:13:55,952 INFO L84 FinitePrefix]: Finished finitePrefix Result has 180881 conditions, 23958 events. 6305/23958 cut-off events. For 1468560/1468624 co-relation queries the response was YES. Maximal size of possible extension queue 1597. Compared 323041 event pairs, 2049 based on Foata normal form. 24/23408 useless extension candidates. Maximal degree in co-relation 180562. Up to 6232 conditions per place. [2022-01-18 23:13:56,025 INFO L132 encePairwiseOnDemand]: 155/186 looper letters, 1488 selfloop transitions, 920 changer transitions 63/2669 dead transitions. [2022-01-18 23:13:56,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1156 places, 2669 transitions, 118016 flow [2022-01-18 23:13:56,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 23:13:56,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-18 23:13:56,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2648 transitions. [2022-01-18 23:13:56,027 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4909158324063775 [2022-01-18 23:13:56,027 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2648 transitions. [2022-01-18 23:13:56,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2648 transitions. [2022-01-18 23:13:56,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:13:56,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2648 transitions. [2022-01-18 23:13:56,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 91.3103448275862) internal successors, (2648), 29 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:13:56,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 186.0) internal successors, (5580), 30 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:13:56,031 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 186.0) internal successors, (5580), 30 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:13:56,031 INFO L186 Difference]: Start difference. First operand has 1137 places, 2359 transitions, 102097 flow. Second operand 29 states and 2648 transitions. [2022-01-18 23:13:56,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1156 places, 2669 transitions, 118016 flow [2022-01-18 23:14:08,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1128 places, 2669 transitions, 115627 flow, removed 83 selfloop flow, removed 28 redundant places. [2022-01-18 23:14:08,696 INFO L242 Difference]: Finished difference. Result has 1137 places, 2351 transitions, 101412 flow [2022-01-18 23:14:08,698 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=99822, PETRI_DIFFERENCE_MINUEND_PLACES=1100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=920, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=101412, PETRI_PLACES=1137, PETRI_TRANSITIONS=2351} [2022-01-18 23:14:08,698 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 965 predicate places. [2022-01-18 23:14:08,698 INFO L470 AbstractCegarLoop]: Abstraction has has 1137 places, 2351 transitions, 101412 flow [2022-01-18 23:14:08,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 87.61538461538461) internal successors, (2278), 26 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:14:08,699 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:14:08,699 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:14:08,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-18 23:14:08,699 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-18 23:14:08,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:14:08,699 INFO L85 PathProgramCache]: Analyzing trace with hash 638932207, now seen corresponding path program 6 times [2022-01-18 23:14:08,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:14:08,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33690085] [2022-01-18 23:14:08,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:14:08,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:14:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:14:09,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:14:09,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:14:09,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33690085] [2022-01-18 23:14:09,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33690085] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:14:09,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:14:09,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-18 23:14:09,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436584943] [2022-01-18 23:14:09,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:14:09,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 23:14:09,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:14:09,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 23:14:09,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2022-01-18 23:14:09,466 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 186 [2022-01-18 23:14:09,466 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1137 places, 2351 transitions, 101412 flow. Second operand has 28 states, 28 states have (on average 87.42857142857143) internal successors, (2448), 28 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:14:09,466 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:14:09,466 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 186 [2022-01-18 23:14:09,467 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:14:35,600 INFO L129 PetriNetUnfolder]: 6827/27063 cut-off events. [2022-01-18 23:14:35,600 INFO L130 PetriNetUnfolder]: For 1710391/1710447 co-relation queries the response was YES. [2022-01-18 23:14:36,452 INFO L84 FinitePrefix]: Finished finitePrefix Result has 203900 conditions, 27063 events. 6827/27063 cut-off events. For 1710391/1710447 co-relation queries the response was YES. Maximal size of possible extension queue 1792. Compared 376372 event pairs, 2490 based on Foata normal form. 25/26567 useless extension candidates. Maximal degree in co-relation 203579. Up to 11760 conditions per place. [2022-01-18 23:14:36,530 INFO L132 encePairwiseOnDemand]: 155/186 looper letters, 1665 selfloop transitions, 1024 changer transitions 82/2969 dead transitions. [2022-01-18 23:14:36,530 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1160 places, 2969 transitions, 133980 flow [2022-01-18 23:14:36,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 23:14:36,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-01-18 23:14:36,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3077 transitions. [2022-01-18 23:14:36,532 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.48655913978494625 [2022-01-18 23:14:36,532 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3077 transitions. [2022-01-18 23:14:36,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3077 transitions. [2022-01-18 23:14:36,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:14:36,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3077 transitions. [2022-01-18 23:14:36,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 90.5) internal successors, (3077), 34 states have internal predecessors, (3077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:14:36,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 186.0) internal successors, (6510), 35 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:14:36,537 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 186.0) internal successors, (6510), 35 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:14:36,537 INFO L186 Difference]: Start difference. First operand has 1137 places, 2351 transitions, 101412 flow. Second operand 34 states and 3077 transitions. [2022-01-18 23:14:36,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1160 places, 2969 transitions, 133980 flow Received shutdown request... [2022-01-18 23:14:40,276 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2022-01-18 23:14:40,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-18 23:14:40,276 WARN L594 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2022-01-18 23:14:40,278 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2022-01-18 23:14:40,278 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2022-01-18 23:14:40,278 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2022-01-18 23:14:40,278 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2022-01-18 23:14:40,278 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2022-01-18 23:14:40,278 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 8 remaining) [2022-01-18 23:14:40,278 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 8 remaining) [2022-01-18 23:14:40,281 INFO L732 BasicCegarLoop]: Path program histogram: [46, 6, 1, 1, 1, 1, 1] [2022-01-18 23:14:40,282 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 23:14:40,282 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 23:14:40,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 11:14:40 BasicIcfg [2022-01-18 23:14:40,284 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 23:14:40,284 INFO L158 Benchmark]: Toolchain (without parser) took 791285.25ms. Allocated memory was 360.7MB in the beginning and 11.6GB in the end (delta: 11.2GB). Free memory was 304.2MB in the beginning and 5.3GB in the end (delta: -5.0GB). Peak memory consumption was 6.3GB. Max. memory is 16.0GB. [2022-01-18 23:14:40,284 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 360.7MB. Free memory is still 323.7MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 23:14:40,284 INFO L158 Benchmark]: CACSL2BoogieTranslator took 630.38ms. Allocated memory was 360.7MB in the beginning and 476.1MB in the end (delta: 115.3MB). Free memory was 334.5MB in the beginning and 406.5MB in the end (delta: -72.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.0GB. [2022-01-18 23:14:40,285 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.47ms. Allocated memory is still 476.1MB. Free memory was 406.5MB in the beginning and 403.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2022-01-18 23:14:40,285 INFO L158 Benchmark]: Boogie Preprocessor took 35.99ms. Allocated memory is still 476.1MB. Free memory was 403.4MB in the beginning and 400.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 23:14:40,285 INFO L158 Benchmark]: RCFGBuilder took 582.15ms. Allocated memory is still 476.1MB. Free memory was 400.2MB in the beginning and 378.2MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2022-01-18 23:14:40,285 INFO L158 Benchmark]: TraceAbstraction took 789949.11ms. Allocated memory was 476.1MB in the beginning and 11.6GB in the end (delta: 11.1GB). Free memory was 378.2MB in the beginning and 5.3GB in the end (delta: -5.0GB). Peak memory consumption was 6.2GB. Max. memory is 16.0GB. [2022-01-18 23:14:40,286 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 360.7MB. Free memory is still 323.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 630.38ms. Allocated memory was 360.7MB in the beginning and 476.1MB in the end (delta: 115.3MB). Free memory was 334.5MB in the beginning and 406.5MB in the end (delta: -72.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 70.47ms. Allocated memory is still 476.1MB. Free memory was 406.5MB in the beginning and 403.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 35.99ms. Allocated memory is still 476.1MB. Free memory was 403.4MB in the beginning and 400.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 582.15ms. Allocated memory is still 476.1MB. Free memory was 400.2MB in the beginning and 378.2MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 789949.11ms. Allocated memory was 476.1MB in the beginning and 11.6GB in the end (delta: 11.1GB). Free memory was 378.2MB in the beginning and 5.3GB in the end (delta: -5.0GB). Peak memory consumption was 6.2GB. 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 - TimeoutResultAtElement [Line: 1675]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 1675]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 1675]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 1675]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 1675]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 1675]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 1714]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 1713]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 190 locations, 8 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: 789.9s, OverallIterations: 57, TraceHistogramMax: 1, PathProgramHistogramMax: 46, EmptinessCheckTime: 0.0s, AutomataDifference: 767.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18789 SdHoareTripleChecker+Valid, 22.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18789 mSDsluCounter, 29331 SdHoareTripleChecker+Invalid, 18.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 29624 mSDsCounter, 2926 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 42608 IncrementalHoareTripleChecker+Invalid, 45534 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2926 mSolverCounterUnsat, 3991 mSDtfsCounter, 42608 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2078 GetRequests, 169 SyntacticMatches, 11 SemanticMatches, 1898 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11173 ImplicationChecksByTransitivity, 48.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102353occurred in iteration=54, InterpolantAutomatonStates: 1229, 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, 1.0s SatisfiabilityAnalysisTime, 20.2s InterpolantComputationTime, 6692 NumberOfCodeBlocks, 6692 NumberOfCodeBlocksAsserted, 57 NumberOfCheckSat, 6635 ConstructedInterpolants, 0 QuantifiedInterpolants, 92015 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 57 InterpolantComputations, 57 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 RESULT: Ultimate could not prove your program: Timeout [2022-01-18 23:14:40,297 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 Completed graceful shutdown