/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/weaver/chl-time-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 00:55:23,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 00:55:23,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 00:55:24,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 00:55:24,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 00:55:24,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 00:55:24,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 00:55:24,032 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 00:55:24,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 00:55:24,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 00:55:24,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 00:55:24,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 00:55:24,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 00:55:24,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 00:55:24,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 00:55:24,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 00:55:24,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 00:55:24,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 00:55:24,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 00:55:24,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 00:55:24,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 00:55:24,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 00:55:24,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 00:55:24,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 00:55:24,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-19 00:55:24,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 00:55:24,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 00:55:24,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 00:55:24,066 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 [2022-01-19 00:55:24,089 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 00:55:24,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 00:55:24,089 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 00:55:24,090 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 00:55:24,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 00:55:24,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 00:55:24,090 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 00:55:24,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 00:55:24,096 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 00:55:24,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 00:55:24,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 00:55:24,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 00:55:24,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 00:55:24,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 00:55:24,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 00:55:24,097 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 00:55:24,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 00:55:24,097 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 00:55:24,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 00:55:24,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 00:55:24,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 00:55:24,097 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 00:55:24,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 00:55:24,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 00:55:24,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 00:55:24,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 00:55:24,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 00:55:24,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 00:55:24,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 00:55:24,098 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 00:55:24,099 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 00:55:24,099 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 00:55:24,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 00:55:24,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 00:55:24,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 00:55:24,289 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 00:55:24,291 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 00:55:24,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-time-symm.wvr.c [2022-01-19 00:55:24,335 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f545af346/370d48422f8045bb9d619583d5c8bd5c/FLAGbd087fa6d [2022-01-19 00:55:24,652 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 00:55:24,652 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-time-symm.wvr.c [2022-01-19 00:55:24,661 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f545af346/370d48422f8045bb9d619583d5c8bd5c/FLAGbd087fa6d [2022-01-19 00:55:25,083 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f545af346/370d48422f8045bb9d619583d5c8bd5c [2022-01-19 00:55:25,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 00:55:25,085 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 00:55:25,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 00:55:25,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 00:55:25,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 00:55:25,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 12:55:25" (1/1) ... [2022-01-19 00:55:25,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@249552ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:55:25, skipping insertion in model container [2022-01-19 00:55:25,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 12:55:25" (1/1) ... [2022-01-19 00:55:25,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 00:55:25,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 00:55:25,227 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-time-symm.wvr.c[2494,2507] [2022-01-19 00:55:25,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 00:55:25,235 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 00:55:25,263 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-time-symm.wvr.c[2494,2507] [2022-01-19 00:55:25,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 00:55:25,276 INFO L208 MainTranslator]: Completed translation [2022-01-19 00:55:25,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:55:25 WrapperNode [2022-01-19 00:55:25,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 00:55:25,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 00:55:25,279 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 00:55:25,279 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 00:55:25,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:55:25" (1/1) ... [2022-01-19 00:55:25,294 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:55:25" (1/1) ... [2022-01-19 00:55:25,318 INFO L137 Inliner]: procedures = 22, calls = 29, calls flagged for inlining = 9, calls inlined = 15, statements flattened = 164 [2022-01-19 00:55:25,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 00:55:25,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 00:55:25,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 00:55:25,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 00:55:25,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:55:25" (1/1) ... [2022-01-19 00:55:25,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:55:25" (1/1) ... [2022-01-19 00:55:25,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:55:25" (1/1) ... [2022-01-19 00:55:25,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:55:25" (1/1) ... [2022-01-19 00:55:25,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:55:25" (1/1) ... [2022-01-19 00:55:25,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:55:25" (1/1) ... [2022-01-19 00:55:25,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:55:25" (1/1) ... [2022-01-19 00:55:25,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 00:55:25,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 00:55:25,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 00:55:25,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 00:55:25,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:55:25" (1/1) ... [2022-01-19 00:55:25,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 00:55:25,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 00:55:25,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-19 00:55:25,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-19 00:55:25,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 00:55:25,400 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 00:55:25,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 00:55:25,400 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 00:55:25,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 00:55:25,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 00:55:25,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 00:55:25,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 00:55:25,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 00:55:25,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 00:55:25,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 00:55:25,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 00:55:25,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 00:55:25,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 00:55:25,402 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 00:55:25,496 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 00:55:25,497 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 00:55:25,722 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 00:55:25,895 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 00:55:25,896 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 00:55:25,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 12:55:25 BoogieIcfgContainer [2022-01-19 00:55:25,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 00:55:25,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 00:55:25,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 00:55:25,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 00:55:25,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 12:55:25" (1/3) ... [2022-01-19 00:55:25,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b79f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 12:55:25, skipping insertion in model container [2022-01-19 00:55:25,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:55:25" (2/3) ... [2022-01-19 00:55:25,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b79f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 12:55:25, skipping insertion in model container [2022-01-19 00:55:25,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 12:55:25" (3/3) ... [2022-01-19 00:55:25,903 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-time-symm.wvr.c [2022-01-19 00:55:25,907 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 00:55:25,907 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 00:55:25,907 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 00:55:25,946 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,946 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,946 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,946 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,946 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,946 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,947 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,947 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,947 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,947 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,947 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,949 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,949 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,949 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,949 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,949 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,949 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,949 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,950 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,950 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,950 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,950 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,953 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,953 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,953 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,953 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,953 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,953 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,953 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,953 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,954 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,954 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,954 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,954 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,954 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,954 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,954 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,955 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,955 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,955 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,955 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,956 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,956 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,956 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,956 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,956 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,956 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,956 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,957 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,957 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,957 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,957 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,960 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,960 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,960 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,960 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,960 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,960 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,961 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,961 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,961 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,961 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,961 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,962 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,962 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,963 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,963 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,963 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,964 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,964 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,964 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,964 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,964 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,964 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,964 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,964 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:55:25,970 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-19 00:55:26,010 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 00:55:26,014 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 00:55:26,014 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-19 00:55:26,027 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 104 places, 102 transitions, 220 flow [2022-01-19 00:55:26,074 INFO L129 PetriNetUnfolder]: 5/100 cut-off events. [2022-01-19 00:55:26,075 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 00:55:26,077 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 100 events. 5/100 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2022-01-19 00:55:26,077 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 102 transitions, 220 flow [2022-01-19 00:55:26,080 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 91 transitions, 194 flow [2022-01-19 00:55:26,106 INFO L129 PetriNetUnfolder]: 5/90 cut-off events. [2022-01-19 00:55:26,106 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 00:55:26,107 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:55:26,107 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:55:26,108 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:55:26,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:55:26,114 INFO L85 PathProgramCache]: Analyzing trace with hash -408130587, now seen corresponding path program 1 times [2022-01-19 00:55:26,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:55:26,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734256612] [2022-01-19 00:55:26,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:55:26,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:55:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:55:26,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:55:26,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:55:26,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734256612] [2022-01-19 00:55:26,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734256612] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:55:26,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:55:26,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:55:26,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286456978] [2022-01-19 00:55:26,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:55:26,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:55:26,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:55:26,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:55:26,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:55:26,473 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2022-01-19 00:55:26,475 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 91 transitions, 194 flow. Second operand has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:26,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:55:26,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2022-01-19 00:55:26,476 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:55:26,601 INFO L129 PetriNetUnfolder]: 8/165 cut-off events. [2022-01-19 00:55:26,602 INFO L130 PetriNetUnfolder]: For 21/24 co-relation queries the response was YES. [2022-01-19 00:55:26,602 INFO L84 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 165 events. 8/165 cut-off events. For 21/24 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 353 event pairs, 0 based on Foata normal form. 5/158 useless extension candidates. Maximal degree in co-relation 61. Up to 16 conditions per place. [2022-01-19 00:55:26,603 INFO L132 encePairwiseOnDemand]: 95/102 looper letters, 35 selfloop transitions, 5 changer transitions 1/104 dead transitions. [2022-01-19 00:55:26,603 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 104 transitions, 309 flow [2022-01-19 00:55:26,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 00:55:26,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 00:55:26,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 490 transitions. [2022-01-19 00:55:26,614 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8006535947712419 [2022-01-19 00:55:26,614 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 490 transitions. [2022-01-19 00:55:26,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 490 transitions. [2022-01-19 00:55:26,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:55:26,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 490 transitions. [2022-01-19 00:55:26,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 81.66666666666667) internal successors, (490), 6 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:26,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:26,625 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:26,626 INFO L186 Difference]: Start difference. First operand has 93 places, 91 transitions, 194 flow. Second operand 6 states and 490 transitions. [2022-01-19 00:55:26,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 104 transitions, 309 flow [2022-01-19 00:55:26,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 104 transitions, 295 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 00:55:26,631 INFO L242 Difference]: Finished difference. Result has 97 places, 93 transitions, 218 flow [2022-01-19 00:55:26,632 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=97, PETRI_TRANSITIONS=93} [2022-01-19 00:55:26,635 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 4 predicate places. [2022-01-19 00:55:26,635 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 93 transitions, 218 flow [2022-01-19 00:55:26,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:26,635 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:55:26,635 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:55:26,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 00:55:26,636 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:55:26,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:55:26,636 INFO L85 PathProgramCache]: Analyzing trace with hash 2065107161, now seen corresponding path program 2 times [2022-01-19 00:55:26,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:55:26,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534190183] [2022-01-19 00:55:26,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:55:26,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:55:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:55:26,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:55:26,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:55:26,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534190183] [2022-01-19 00:55:26,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534190183] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:55:26,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:55:26,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:55:26,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483251065] [2022-01-19 00:55:26,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:55:26,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:55:26,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:55:26,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:55:26,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:55:26,729 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2022-01-19 00:55:26,730 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 93 transitions, 218 flow. Second operand has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:26,730 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:55:26,730 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2022-01-19 00:55:26,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:55:26,852 INFO L129 PetriNetUnfolder]: 8/163 cut-off events. [2022-01-19 00:55:26,852 INFO L130 PetriNetUnfolder]: For 22/25 co-relation queries the response was YES. [2022-01-19 00:55:26,854 INFO L84 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 163 events. 8/163 cut-off events. For 22/25 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 332 event pairs, 1 based on Foata normal form. 3/163 useless extension candidates. Maximal degree in co-relation 167. Up to 19 conditions per place. [2022-01-19 00:55:26,856 INFO L132 encePairwiseOnDemand]: 96/102 looper letters, 35 selfloop transitions, 7 changer transitions 0/105 dead transitions. [2022-01-19 00:55:26,856 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 105 transitions, 339 flow [2022-01-19 00:55:26,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 00:55:26,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 00:55:26,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 486 transitions. [2022-01-19 00:55:26,862 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7941176470588235 [2022-01-19 00:55:26,863 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 486 transitions. [2022-01-19 00:55:26,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 486 transitions. [2022-01-19 00:55:26,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:55:26,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 486 transitions. [2022-01-19 00:55:26,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:26,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:26,870 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:26,870 INFO L186 Difference]: Start difference. First operand has 97 places, 93 transitions, 218 flow. Second operand 6 states and 486 transitions. [2022-01-19 00:55:26,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 105 transitions, 339 flow [2022-01-19 00:55:26,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 105 transitions, 337 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 00:55:26,880 INFO L242 Difference]: Finished difference. Result has 103 places, 95 transitions, 258 flow [2022-01-19 00:55:26,880 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=103, PETRI_TRANSITIONS=95} [2022-01-19 00:55:26,880 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 10 predicate places. [2022-01-19 00:55:26,881 INFO L470 AbstractCegarLoop]: Abstraction has has 103 places, 95 transitions, 258 flow [2022-01-19 00:55:26,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:26,881 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:55:26,881 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] [2022-01-19 00:55:26,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 00:55:26,881 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:55:26,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:55:26,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1162863185, now seen corresponding path program 1 times [2022-01-19 00:55:26,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:55:26,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504476706] [2022-01-19 00:55:26,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:55:26,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:55:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:55:27,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:55:27,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:55:27,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504476706] [2022-01-19 00:55:27,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504476706] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:55:27,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:55:27,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:55:27,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400973034] [2022-01-19 00:55:27,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:55:27,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:55:27,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:55:27,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:55:27,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:55:27,013 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2022-01-19 00:55:27,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 95 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:27,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:55:27,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2022-01-19 00:55:27,014 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:55:27,127 INFO L129 PetriNetUnfolder]: 6/188 cut-off events. [2022-01-19 00:55:27,129 INFO L130 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2022-01-19 00:55:27,131 INFO L84 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 188 events. 6/188 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 507 event pairs, 0 based on Foata normal form. 1/187 useless extension candidates. Maximal degree in co-relation 190. Up to 12 conditions per place. [2022-01-19 00:55:27,132 INFO L132 encePairwiseOnDemand]: 94/102 looper letters, 33 selfloop transitions, 9 changer transitions 0/105 dead transitions. [2022-01-19 00:55:27,132 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 105 transitions, 373 flow [2022-01-19 00:55:27,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 00:55:27,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 00:55:27,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 558 transitions. [2022-01-19 00:55:27,134 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7815126050420168 [2022-01-19 00:55:27,134 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 558 transitions. [2022-01-19 00:55:27,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 558 transitions. [2022-01-19 00:55:27,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:55:27,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 558 transitions. [2022-01-19 00:55:27,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.71428571428571) internal successors, (558), 7 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:27,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:27,137 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:27,137 INFO L186 Difference]: Start difference. First operand has 103 places, 95 transitions, 258 flow. Second operand 7 states and 558 transitions. [2022-01-19 00:55:27,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 105 transitions, 373 flow [2022-01-19 00:55:27,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 105 transitions, 366 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-01-19 00:55:27,144 INFO L242 Difference]: Finished difference. Result has 109 places, 98 transitions, 288 flow [2022-01-19 00:55:27,144 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=288, PETRI_PLACES=109, PETRI_TRANSITIONS=98} [2022-01-19 00:55:27,146 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 16 predicate places. [2022-01-19 00:55:27,146 INFO L470 AbstractCegarLoop]: Abstraction has has 109 places, 98 transitions, 288 flow [2022-01-19 00:55:27,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:27,146 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:55:27,147 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] [2022-01-19 00:55:27,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 00:55:27,147 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:55:27,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:55:27,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1992116849, now seen corresponding path program 1 times [2022-01-19 00:55:27,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:55:27,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859376872] [2022-01-19 00:55:27,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:55:27,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:55:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:55:27,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:55:27,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:55:27,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859376872] [2022-01-19 00:55:27,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859376872] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:55:27,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:55:27,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 00:55:27,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926996894] [2022-01-19 00:55:27,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:55:27,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 00:55:27,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:55:27,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 00:55:27,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 00:55:27,259 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 102 [2022-01-19 00:55:27,260 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 98 transitions, 288 flow. Second operand has 7 states, 7 states have (on average 81.42857142857143) internal successors, (570), 7 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:27,260 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:55:27,260 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 102 [2022-01-19 00:55:27,260 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:55:27,349 INFO L129 PetriNetUnfolder]: 8/232 cut-off events. [2022-01-19 00:55:27,349 INFO L130 PetriNetUnfolder]: For 65/68 co-relation queries the response was YES. [2022-01-19 00:55:27,350 INFO L84 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 232 events. 8/232 cut-off events. For 65/68 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 834 event pairs, 2 based on Foata normal form. 2/232 useless extension candidates. Maximal degree in co-relation 246. Up to 66 conditions per place. [2022-01-19 00:55:27,350 INFO L132 encePairwiseOnDemand]: 94/102 looper letters, 26 selfloop transitions, 4 changer transitions 4/110 dead transitions. [2022-01-19 00:55:27,350 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 110 transitions, 380 flow [2022-01-19 00:55:27,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 00:55:27,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 00:55:27,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 586 transitions. [2022-01-19 00:55:27,352 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8207282913165266 [2022-01-19 00:55:27,352 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 586 transitions. [2022-01-19 00:55:27,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 586 transitions. [2022-01-19 00:55:27,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:55:27,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 586 transitions. [2022-01-19 00:55:27,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.71428571428571) internal successors, (586), 7 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:27,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:27,356 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:27,356 INFO L186 Difference]: Start difference. First operand has 109 places, 98 transitions, 288 flow. Second operand 7 states and 586 transitions. [2022-01-19 00:55:27,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 110 transitions, 380 flow [2022-01-19 00:55:27,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 110 transitions, 374 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 00:55:27,360 INFO L242 Difference]: Finished difference. Result has 118 places, 101 transitions, 316 flow [2022-01-19 00:55:27,360 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=316, PETRI_PLACES=118, PETRI_TRANSITIONS=101} [2022-01-19 00:55:27,361 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 25 predicate places. [2022-01-19 00:55:27,361 INFO L470 AbstractCegarLoop]: Abstraction has has 118 places, 101 transitions, 316 flow [2022-01-19 00:55:27,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.42857142857143) internal successors, (570), 7 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:27,361 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:55:27,361 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] [2022-01-19 00:55:27,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 00:55:27,362 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:55:27,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:55:27,362 INFO L85 PathProgramCache]: Analyzing trace with hash 795161343, now seen corresponding path program 1 times [2022-01-19 00:55:27,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:55:27,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654353047] [2022-01-19 00:55:27,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:55:27,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:55:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:55:27,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:55:27,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:55:27,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654353047] [2022-01-19 00:55:27,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654353047] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:55:27,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:55:27,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 00:55:27,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336429073] [2022-01-19 00:55:27,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:55:27,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 00:55:27,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:55:27,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 00:55:27,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 00:55:27,488 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 102 [2022-01-19 00:55:27,489 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 101 transitions, 316 flow. Second operand has 7 states, 7 states have (on average 81.42857142857143) internal successors, (570), 7 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:27,489 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:55:27,489 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 102 [2022-01-19 00:55:27,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:55:27,568 INFO L129 PetriNetUnfolder]: 6/234 cut-off events. [2022-01-19 00:55:27,568 INFO L130 PetriNetUnfolder]: For 93/96 co-relation queries the response was YES. [2022-01-19 00:55:27,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 234 events. 6/234 cut-off events. For 93/96 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 851 event pairs, 2 based on Foata normal form. 2/234 useless extension candidates. Maximal degree in co-relation 364. Up to 92 conditions per place. [2022-01-19 00:55:27,569 INFO L132 encePairwiseOnDemand]: 96/102 looper letters, 23 selfloop transitions, 0 changer transitions 10/106 dead transitions. [2022-01-19 00:55:27,569 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 106 transitions, 388 flow [2022-01-19 00:55:27,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 00:55:27,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 00:55:27,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 579 transitions. [2022-01-19 00:55:27,571 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8109243697478992 [2022-01-19 00:55:27,571 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 579 transitions. [2022-01-19 00:55:27,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 579 transitions. [2022-01-19 00:55:27,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:55:27,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 579 transitions. [2022-01-19 00:55:27,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:27,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:27,574 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:27,574 INFO L186 Difference]: Start difference. First operand has 118 places, 101 transitions, 316 flow. Second operand 7 states and 579 transitions. [2022-01-19 00:55:27,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 106 transitions, 388 flow [2022-01-19 00:55:27,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 106 transitions, 376 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-01-19 00:55:27,579 INFO L242 Difference]: Finished difference. Result has 122 places, 96 transitions, 287 flow [2022-01-19 00:55:27,579 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=287, PETRI_PLACES=122, PETRI_TRANSITIONS=96} [2022-01-19 00:55:27,581 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 29 predicate places. [2022-01-19 00:55:27,581 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 96 transitions, 287 flow [2022-01-19 00:55:27,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.42857142857143) internal successors, (570), 7 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:27,582 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:55:27,582 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] [2022-01-19 00:55:27,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 00:55:27,582 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:55:27,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:55:27,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1527220719, now seen corresponding path program 2 times [2022-01-19 00:55:27,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:55:27,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129879498] [2022-01-19 00:55:27,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:55:27,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:55:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:55:27,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:55:27,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:55:27,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129879498] [2022-01-19 00:55:27,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129879498] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:55:27,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:55:27,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:55:27,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637558022] [2022-01-19 00:55:27,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:55:27,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:55:27,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:55:27,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:55:27,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:55:27,679 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2022-01-19 00:55:27,680 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 96 transitions, 287 flow. Second operand has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:27,680 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:55:27,680 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2022-01-19 00:55:27,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:55:27,792 INFO L129 PetriNetUnfolder]: 6/201 cut-off events. [2022-01-19 00:55:27,792 INFO L130 PetriNetUnfolder]: For 67/70 co-relation queries the response was YES. [2022-01-19 00:55:27,792 INFO L84 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 201 events. 6/201 cut-off events. For 67/70 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 584 event pairs, 1 based on Foata normal form. 2/202 useless extension candidates. Maximal degree in co-relation 370. Up to 13 conditions per place. [2022-01-19 00:55:27,793 INFO L132 encePairwiseOnDemand]: 95/102 looper letters, 28 selfloop transitions, 9 changer transitions 2/103 dead transitions. [2022-01-19 00:55:27,793 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 103 transitions, 392 flow [2022-01-19 00:55:27,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 00:55:27,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 00:55:27,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 556 transitions. [2022-01-19 00:55:27,795 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7787114845938375 [2022-01-19 00:55:27,795 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 556 transitions. [2022-01-19 00:55:27,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 556 transitions. [2022-01-19 00:55:27,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:55:27,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 556 transitions. [2022-01-19 00:55:27,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.42857142857143) internal successors, (556), 7 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:27,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:27,801 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:27,801 INFO L186 Difference]: Start difference. First operand has 122 places, 96 transitions, 287 flow. Second operand 7 states and 556 transitions. [2022-01-19 00:55:27,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 103 transitions, 392 flow [2022-01-19 00:55:27,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 103 transitions, 358 flow, removed 13 selfloop flow, removed 9 redundant places. [2022-01-19 00:55:27,804 INFO L242 Difference]: Finished difference. Result has 114 places, 95 transitions, 280 flow [2022-01-19 00:55:27,804 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=280, PETRI_PLACES=114, PETRI_TRANSITIONS=95} [2022-01-19 00:55:27,805 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 21 predicate places. [2022-01-19 00:55:27,806 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 95 transitions, 280 flow [2022-01-19 00:55:27,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:27,806 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:55:27,806 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] [2022-01-19 00:55:27,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 00:55:27,806 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:55:27,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:55:27,807 INFO L85 PathProgramCache]: Analyzing trace with hash -710130457, now seen corresponding path program 1 times [2022-01-19 00:55:27,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:55:27,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133330881] [2022-01-19 00:55:27,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:55:27,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:55:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:55:27,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:55:27,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:55:27,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133330881] [2022-01-19 00:55:27,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133330881] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:55:27,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:55:27,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:55:27,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835852892] [2022-01-19 00:55:27,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:55:27,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:55:27,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:55:27,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:55:27,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:55:27,889 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2022-01-19 00:55:27,890 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 95 transitions, 280 flow. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:27,890 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:55:27,890 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2022-01-19 00:55:27,890 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:55:27,977 INFO L129 PetriNetUnfolder]: 4/177 cut-off events. [2022-01-19 00:55:27,977 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-01-19 00:55:27,979 INFO L84 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 177 events. 4/177 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 435 event pairs, 0 based on Foata normal form. 1/178 useless extension candidates. Maximal degree in co-relation 287. Up to 16 conditions per place. [2022-01-19 00:55:27,979 INFO L132 encePairwiseOnDemand]: 98/102 looper letters, 32 selfloop transitions, 3 changer transitions 1/100 dead transitions. [2022-01-19 00:55:27,979 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 100 transitions, 359 flow [2022-01-19 00:55:27,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:55:27,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:55:27,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 405 transitions. [2022-01-19 00:55:27,981 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7941176470588235 [2022-01-19 00:55:27,981 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 405 transitions. [2022-01-19 00:55:27,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 405 transitions. [2022-01-19 00:55:27,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:55:27,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 405 transitions. [2022-01-19 00:55:27,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:27,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:27,983 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:27,983 INFO L186 Difference]: Start difference. First operand has 114 places, 95 transitions, 280 flow. Second operand 5 states and 405 transitions. [2022-01-19 00:55:27,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 100 transitions, 359 flow [2022-01-19 00:55:27,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 100 transitions, 344 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-01-19 00:55:27,985 INFO L242 Difference]: Finished difference. Result has 113 places, 94 transitions, 266 flow [2022-01-19 00:55:27,985 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=266, PETRI_PLACES=113, PETRI_TRANSITIONS=94} [2022-01-19 00:55:27,986 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 20 predicate places. [2022-01-19 00:55:27,986 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 94 transitions, 266 flow [2022-01-19 00:55:27,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:27,986 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:55:27,987 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] [2022-01-19 00:55:27,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 00:55:27,987 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:55:27,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:55:27,987 INFO L85 PathProgramCache]: Analyzing trace with hash -2045674615, now seen corresponding path program 1 times [2022-01-19 00:55:27,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:55:27,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493847770] [2022-01-19 00:55:27,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:55:27,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:55:28,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:55:28,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:55:28,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:55:28,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493847770] [2022-01-19 00:55:28,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493847770] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:55:28,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:55:28,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:55:28,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731312344] [2022-01-19 00:55:28,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:55:28,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:55:28,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:55:28,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:55:28,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:55:28,072 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2022-01-19 00:55:28,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 94 transitions, 266 flow. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:28,073 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:55:28,073 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2022-01-19 00:55:28,073 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:55:28,137 INFO L129 PetriNetUnfolder]: 4/159 cut-off events. [2022-01-19 00:55:28,137 INFO L130 PetriNetUnfolder]: For 40/43 co-relation queries the response was YES. [2022-01-19 00:55:28,137 INFO L84 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 159 events. 4/159 cut-off events. For 40/43 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 309 event pairs, 0 based on Foata normal form. 2/161 useless extension candidates. Maximal degree in co-relation 258. Up to 14 conditions per place. [2022-01-19 00:55:28,138 INFO L132 encePairwiseOnDemand]: 95/102 looper letters, 27 selfloop transitions, 7 changer transitions 0/98 dead transitions. [2022-01-19 00:55:28,138 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 98 transitions, 341 flow [2022-01-19 00:55:28,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 00:55:28,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 00:55:28,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 477 transitions. [2022-01-19 00:55:28,139 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7794117647058824 [2022-01-19 00:55:28,139 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 477 transitions. [2022-01-19 00:55:28,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 477 transitions. [2022-01-19 00:55:28,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:55:28,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 477 transitions. [2022-01-19 00:55:28,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 79.5) internal successors, (477), 6 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:28,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:28,141 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:28,142 INFO L186 Difference]: Start difference. First operand has 113 places, 94 transitions, 266 flow. Second operand 6 states and 477 transitions. [2022-01-19 00:55:28,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 98 transitions, 341 flow [2022-01-19 00:55:28,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 98 transitions, 336 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 00:55:28,143 INFO L242 Difference]: Finished difference. Result has 115 places, 95 transitions, 283 flow [2022-01-19 00:55:28,144 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=115, PETRI_TRANSITIONS=95} [2022-01-19 00:55:28,145 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 22 predicate places. [2022-01-19 00:55:28,145 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 95 transitions, 283 flow [2022-01-19 00:55:28,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:28,146 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:55:28,146 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] [2022-01-19 00:55:28,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 00:55:28,146 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:55:28,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:55:28,146 INFO L85 PathProgramCache]: Analyzing trace with hash -367310015, now seen corresponding path program 1 times [2022-01-19 00:55:28,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:55:28,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403896695] [2022-01-19 00:55:28,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:55:28,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:55:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:55:28,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:55:28,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:55:28,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403896695] [2022-01-19 00:55:28,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403896695] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:55:28,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:55:28,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 00:55:28,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036821084] [2022-01-19 00:55:28,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:55:28,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 00:55:28,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:55:28,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 00:55:28,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 00:55:28,219 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 102 [2022-01-19 00:55:28,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 95 transitions, 283 flow. Second operand has 8 states, 8 states have (on average 78.375) internal successors, (627), 8 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:28,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:55:28,220 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 102 [2022-01-19 00:55:28,220 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:55:28,306 INFO L129 PetriNetUnfolder]: 3/148 cut-off events. [2022-01-19 00:55:28,306 INFO L130 PetriNetUnfolder]: For 57/60 co-relation queries the response was YES. [2022-01-19 00:55:28,306 INFO L84 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 148 events. 3/148 cut-off events. For 57/60 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 253 event pairs, 2 based on Foata normal form. 2/148 useless extension candidates. Maximal degree in co-relation 277. Up to 39 conditions per place. [2022-01-19 00:55:28,307 INFO L132 encePairwiseOnDemand]: 93/102 looper letters, 26 selfloop transitions, 4 changer transitions 11/106 dead transitions. [2022-01-19 00:55:28,307 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 106 transitions, 379 flow [2022-01-19 00:55:28,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 00:55:28,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 00:55:28,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 644 transitions. [2022-01-19 00:55:28,308 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7892156862745098 [2022-01-19 00:55:28,308 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 644 transitions. [2022-01-19 00:55:28,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 644 transitions. [2022-01-19 00:55:28,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:55:28,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 644 transitions. [2022-01-19 00:55:28,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 80.5) internal successors, (644), 8 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:28,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 102.0) internal successors, (918), 9 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:28,311 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 102.0) internal successors, (918), 9 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:28,311 INFO L186 Difference]: Start difference. First operand has 115 places, 95 transitions, 283 flow. Second operand 8 states and 644 transitions. [2022-01-19 00:55:28,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 106 transitions, 379 flow [2022-01-19 00:55:28,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 106 transitions, 373 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 00:55:28,314 INFO L242 Difference]: Finished difference. Result has 125 places, 89 transitions, 256 flow [2022-01-19 00:55:28,314 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=256, PETRI_PLACES=125, PETRI_TRANSITIONS=89} [2022-01-19 00:55:28,314 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 32 predicate places. [2022-01-19 00:55:28,314 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 89 transitions, 256 flow [2022-01-19 00:55:28,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 78.375) internal successors, (627), 8 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:28,315 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:55:28,315 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] [2022-01-19 00:55:28,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 00:55:28,315 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:55:28,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:55:28,316 INFO L85 PathProgramCache]: Analyzing trace with hash -953494737, now seen corresponding path program 2 times [2022-01-19 00:55:28,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:55:28,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593912938] [2022-01-19 00:55:28,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:55:28,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:55:28,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:55:28,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:55:28,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:55:28,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593912938] [2022-01-19 00:55:28,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593912938] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:55:28,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:55:28,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:55:28,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514164977] [2022-01-19 00:55:28,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:55:28,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:55:28,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:55:28,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:55:28,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:55:28,414 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2022-01-19 00:55:28,415 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 89 transitions, 256 flow. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:28,415 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:55:28,415 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2022-01-19 00:55:28,415 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:55:28,473 INFO L129 PetriNetUnfolder]: 0/85 cut-off events. [2022-01-19 00:55:28,473 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-01-19 00:55:28,473 INFO L84 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 85 events. 0/85 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 1/86 useless extension candidates. Maximal degree in co-relation 0. Up to 14 conditions per place. [2022-01-19 00:55:28,473 INFO L132 encePairwiseOnDemand]: 96/102 looper letters, 18 selfloop transitions, 4 changer transitions 4/85 dead transitions. [2022-01-19 00:55:28,474 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 85 transitions, 283 flow [2022-01-19 00:55:28,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 00:55:28,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 00:55:28,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 469 transitions. [2022-01-19 00:55:28,475 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7663398692810458 [2022-01-19 00:55:28,475 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 469 transitions. [2022-01-19 00:55:28,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 469 transitions. [2022-01-19 00:55:28,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:55:28,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 469 transitions. [2022-01-19 00:55:28,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.16666666666667) internal successors, (469), 6 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:28,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:28,477 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:28,477 INFO L186 Difference]: Start difference. First operand has 125 places, 89 transitions, 256 flow. Second operand 6 states and 469 transitions. [2022-01-19 00:55:28,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 85 transitions, 283 flow [2022-01-19 00:55:28,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 85 transitions, 238 flow, removed 10 selfloop flow, removed 19 redundant places. [2022-01-19 00:55:28,479 INFO L242 Difference]: Finished difference. Result has 101 places, 81 transitions, 186 flow [2022-01-19 00:55:28,479 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=101, PETRI_TRANSITIONS=81} [2022-01-19 00:55:28,480 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 8 predicate places. [2022-01-19 00:55:28,480 INFO L470 AbstractCegarLoop]: Abstraction has has 101 places, 81 transitions, 186 flow [2022-01-19 00:55:28,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:28,480 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:55:28,480 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] [2022-01-19 00:55:28,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 00:55:28,481 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:55:28,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:55:28,481 INFO L85 PathProgramCache]: Analyzing trace with hash -525411835, now seen corresponding path program 2 times [2022-01-19 00:55:28,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:55:28,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361013622] [2022-01-19 00:55:28,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:55:28,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:55:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:55:28,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:55:28,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:55:28,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361013622] [2022-01-19 00:55:28,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361013622] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:55:28,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:55:28,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:55:28,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631060003] [2022-01-19 00:55:28,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:55:28,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:55:28,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:55:28,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:55:28,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:55:28,535 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2022-01-19 00:55:28,536 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 81 transitions, 186 flow. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:28,536 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:55:28,536 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2022-01-19 00:55:28,536 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:55:28,581 INFO L129 PetriNetUnfolder]: 0/67 cut-off events. [2022-01-19 00:55:28,581 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 00:55:28,581 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 67 events. 0/67 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2022-01-19 00:55:28,581 INFO L132 encePairwiseOnDemand]: 96/102 looper letters, 0 selfloop transitions, 0 changer transitions 67/67 dead transitions. [2022-01-19 00:55:28,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 67 transitions, 196 flow [2022-01-19 00:55:28,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 00:55:28,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 00:55:28,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 466 transitions. [2022-01-19 00:55:28,582 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.761437908496732 [2022-01-19 00:55:28,583 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 466 transitions. [2022-01-19 00:55:28,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 466 transitions. [2022-01-19 00:55:28,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:55:28,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 466 transitions. [2022-01-19 00:55:28,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:28,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:28,585 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:28,585 INFO L186 Difference]: Start difference. First operand has 101 places, 81 transitions, 186 flow. Second operand 6 states and 466 transitions. [2022-01-19 00:55:28,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 67 transitions, 196 flow [2022-01-19 00:55:28,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 67 transitions, 183 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-01-19 00:55:28,586 INFO L242 Difference]: Finished difference. Result has 79 places, 0 transitions, 0 flow [2022-01-19 00:55:28,586 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=79, PETRI_TRANSITIONS=0} [2022-01-19 00:55:28,587 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, -14 predicate places. [2022-01-19 00:55:28,587 INFO L470 AbstractCegarLoop]: Abstraction has has 79 places, 0 transitions, 0 flow [2022-01-19 00:55:28,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:55:28,589 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-19 00:55:28,589 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-19 00:55:28,589 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-19 00:55:28,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 00:55:28,592 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1] [2022-01-19 00:55:28,593 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 00:55:28,593 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 00:55:28,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 12:55:28 BasicIcfg [2022-01-19 00:55:28,595 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 00:55:28,596 INFO L158 Benchmark]: Toolchain (without parser) took 3510.38ms. Allocated memory was 364.9MB in the beginning and 471.9MB in the end (delta: 107.0MB). Free memory was 313.1MB in the beginning and 399.4MB in the end (delta: -86.3MB). Peak memory consumption was 22.4MB. Max. memory is 16.0GB. [2022-01-19 00:55:28,596 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 364.9MB. Free memory is still 329.1MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 00:55:28,596 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.47ms. Allocated memory is still 364.9MB. Free memory was 313.0MB in the beginning and 338.3MB in the end (delta: -25.3MB). Peak memory consumption was 17.5MB. Max. memory is 16.0GB. [2022-01-19 00:55:28,596 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.41ms. Allocated memory is still 364.9MB. Free memory was 338.3MB in the beginning and 336.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 00:55:28,597 INFO L158 Benchmark]: Boogie Preprocessor took 27.65ms. Allocated memory is still 364.9MB. Free memory was 336.2MB in the beginning and 334.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 00:55:28,598 INFO L158 Benchmark]: RCFGBuilder took 550.05ms. Allocated memory is still 364.9MB. Free memory was 334.5MB in the beginning and 298.9MB in the end (delta: 35.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. [2022-01-19 00:55:28,598 INFO L158 Benchmark]: TraceAbstraction took 2696.86ms. Allocated memory was 364.9MB in the beginning and 471.9MB in the end (delta: 107.0MB). Free memory was 298.4MB in the beginning and 399.4MB in the end (delta: -101.0MB). Peak memory consumption was 9.1MB. Max. memory is 16.0GB. [2022-01-19 00:55:28,599 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 364.9MB. Free memory is still 329.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 190.47ms. Allocated memory is still 364.9MB. Free memory was 313.0MB in the beginning and 338.3MB in the end (delta: -25.3MB). Peak memory consumption was 17.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 40.41ms. Allocated memory is still 364.9MB. Free memory was 338.3MB in the beginning and 336.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.65ms. Allocated memory is still 364.9MB. Free memory was 336.2MB in the beginning and 334.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 550.05ms. Allocated memory is still 364.9MB. Free memory was 334.5MB in the beginning and 298.9MB in the end (delta: 35.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. * TraceAbstraction took 2696.86ms. Allocated memory was 364.9MB in the beginning and 471.9MB in the end (delta: 107.0MB). Free memory was 298.4MB in the beginning and 399.4MB in the end (delta: -101.0MB). Peak memory consumption was 9.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 80]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 108 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.6s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 248 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 248 mSDsluCounter, 447 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 469 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 662 IncrementalHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 152 mSDtfsCounter, 662 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=316occurred in iteration=4, InterpolantAutomatonStates: 71, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 875 NumberOfCodeBlocks, 875 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 864 ConstructedInterpolants, 0 QuantifiedInterpolants, 2350 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-19 00:55:28,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...