/usr/bin/java -Xmx8000000000 -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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 20:28:29,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 20:28:29,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 20:28:29,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 20:28:29,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 20:28:29,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 20:28:29,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 20:28:29,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 20:28:29,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 20:28:29,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 20:28:29,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 20:28:29,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 20:28:29,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 20:28:29,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 20:28:29,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 20:28:29,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 20:28:29,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 20:28:29,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 20:28:29,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 20:28:29,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 20:28:29,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 20:28:29,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 20:28:29,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 20:28:29,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 20:28:29,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-12-05 20:28:29,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 20:28:29,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 20:28:29,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 20:28:29,872 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-SemanticLbe.epf [2022-12-05 20:28:29,898 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 20:28:29,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 20:28:29,899 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 20:28:29,899 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 20:28:29,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 20:28:29,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 20:28:29,901 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 20:28:29,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 20:28:29,901 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 20:28:29,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 20:28:29,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 20:28:29,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 20:28:29,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 20:28:29,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 20:28:29,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 20:28:29,902 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 20:28:29,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 20:28:29,903 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 20:28:29,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 20:28:29,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 20:28:29,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 20:28:29,903 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 20:28:29,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 20:28:29,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:28:29,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 20:28:29,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 20:28:29,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 20:28:29,904 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 20:28:29,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 20:28:29,904 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 20:28:29,904 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 20:28:30,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 20:28:30,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 20:28:30,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 20:28:30,285 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 20:28:30,286 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 20:28:30,287 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2022-12-05 20:28:31,529 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 20:28:31,897 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 20:28:31,898 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2022-12-05 20:28:31,921 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec0b24985/14d4df1083404ee5957469b5a786c762/FLAG5d3690950 [2022-12-05 20:28:31,941 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec0b24985/14d4df1083404ee5957469b5a786c762 [2022-12-05 20:28:31,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 20:28:31,945 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 20:28:31,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 20:28:31,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 20:28:31,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 20:28:31,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:28:31" (1/1) ... [2022-12-05 20:28:31,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e0b0513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:31, skipping insertion in model container [2022-12-05 20:28:31,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:28:31" (1/1) ... [2022-12-05 20:28:31,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 20:28:32,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 20:28:32,578 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i[76077,76090] [2022-12-05 20:28:32,632 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:28:32,644 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 20:28:32,700 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i[76077,76090] [2022-12-05 20:28:32,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:28:32,870 INFO L208 MainTranslator]: Completed translation [2022-12-05 20:28:32,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:32 WrapperNode [2022-12-05 20:28:32,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 20:28:32,873 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 20:28:32,874 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 20:28:32,874 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 20:28:32,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:32" (1/1) ... [2022-12-05 20:28:32,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:32" (1/1) ... [2022-12-05 20:28:32,940 INFO L138 Inliner]: procedures = 482, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 133 [2022-12-05 20:28:32,941 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 20:28:32,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 20:28:32,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 20:28:32,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 20:28:32,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:32" (1/1) ... [2022-12-05 20:28:32,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:32" (1/1) ... [2022-12-05 20:28:32,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:32" (1/1) ... [2022-12-05 20:28:32,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:32" (1/1) ... [2022-12-05 20:28:32,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:32" (1/1) ... [2022-12-05 20:28:32,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:32" (1/1) ... [2022-12-05 20:28:32,973 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:32" (1/1) ... [2022-12-05 20:28:32,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:32" (1/1) ... [2022-12-05 20:28:32,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 20:28:32,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 20:28:32,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 20:28:32,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 20:28:32,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:32" (1/1) ... [2022-12-05 20:28:32,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:28:33,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:28:33,021 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) [2022-12-05 20:28:33,028 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 [2022-12-05 20:28:33,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 20:28:33,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 20:28:33,052 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-05 20:28:33,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 20:28:33,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-05 20:28:33,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 20:28:33,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 20:28:33,053 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-12-05 20:28:33,053 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-12-05 20:28:33,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 20:28:33,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 20:28:33,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 20:28:33,054 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 20:28:33,338 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 20:28:33,340 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 20:28:33,607 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 20:28:33,615 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 20:28:33,615 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-05 20:28:33,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:28:33 BoogieIcfgContainer [2022-12-05 20:28:33,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 20:28:33,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 20:28:33,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 20:28:33,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 20:28:33,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 08:28:31" (1/3) ... [2022-12-05 20:28:33,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49a09043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:28:33, skipping insertion in model container [2022-12-05 20:28:33,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:32" (2/3) ... [2022-12-05 20:28:33,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49a09043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:28:33, skipping insertion in model container [2022-12-05 20:28:33,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:28:33" (3/3) ... [2022-12-05 20:28:33,629 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2022-12-05 20:28:33,650 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 20:28:33,650 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-05 20:28:33,650 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 20:28:33,735 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-05 20:28:33,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 174 transitions, 364 flow [2022-12-05 20:28:33,879 INFO L130 PetriNetUnfolder]: 10/212 cut-off events. [2022-12-05 20:28:33,879 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 20:28:33,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 212 events. 10/212 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 372 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 124. Up to 4 conditions per place. [2022-12-05 20:28:33,884 INFO L82 GeneralOperation]: Start removeDead. Operand has 172 places, 174 transitions, 364 flow [2022-12-05 20:28:33,893 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 162 transitions, 336 flow [2022-12-05 20:28:33,895 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 20:28:33,923 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 162 transitions, 336 flow [2022-12-05 20:28:33,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 162 transitions, 336 flow [2022-12-05 20:28:33,977 INFO L130 PetriNetUnfolder]: 7/193 cut-off events. [2022-12-05 20:28:33,977 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 20:28:33,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 193 events. 7/193 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 315 event pairs, 0 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 114. Up to 4 conditions per place. [2022-12-05 20:28:33,982 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 162 transitions, 336 flow [2022-12-05 20:28:33,983 INFO L188 LiptonReduction]: Number of co-enabled transitions 2604 [2022-12-05 20:28:34,158 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:34,160 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:34,164 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:34,165 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:36,913 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:36,914 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:36,917 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:36,917 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:37,101 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:37,102 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:37,104 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:37,105 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:37,406 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:37,407 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:37,412 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:37,413 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:37,419 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:37,424 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2022-12-05 20:28:37,427 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:37,427 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:40,935 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:40,936 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:40,938 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:40,943 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:43,391 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:43,393 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2022-12-05 20:28:43,396 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:43,397 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:43,400 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:43,401 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2022-12-05 20:28:43,403 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:43,403 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:46,186 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:46,187 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:46,189 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:46,189 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:46,358 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:46,359 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:46,361 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:46,361 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:49,582 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:49,582 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:49,584 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:49,585 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:52,244 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:52,245 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:52,246 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:52,247 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:52,321 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:52,323 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2022-12-05 20:28:52,328 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:52,329 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:52,334 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:52,336 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2022-12-05 20:28:52,341 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:52,341 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:53,807 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:53,809 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:53,810 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:53,811 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:56,272 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:56,273 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:28:56,276 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:28:56,277 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2022-12-05 20:29:00,841 INFO L203 LiptonReduction]: Total number of compositions: 132 [2022-12-05 20:29:00,854 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 20:29:00,859 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@70c86b9e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 20:29:00,860 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-12-05 20:29:00,861 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-05 20:29:00,861 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:29:00,861 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:29:00,862 INFO L213 CegarLoopForPetriNet]: trace histogram [1] [2022-12-05 20:29:00,862 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 20:29:00,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:29:00,866 INFO L85 PathProgramCache]: Analyzing trace with hash 586, now seen corresponding path program 1 times [2022-12-05 20:29:00,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:29:00,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193104633] [2022-12-05 20:29:00,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:29:00,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:29:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:29:01,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:29:01,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:29:01,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193104633] [2022-12-05 20:29:01,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193104633] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:29:01,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:29:01,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-05 20:29:01,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100200472] [2022-12-05 20:29:01,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:29:01,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-05 20:29:01,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:29:01,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-05 20:29:01,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-05 20:29:01,104 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2022-12-05 20:29:01,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 82 flow. Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:29:01,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:29:01,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2022-12-05 20:29:01,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:29:01,287 INFO L130 PetriNetUnfolder]: 225/508 cut-off events. [2022-12-05 20:29:01,288 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-05 20:29:01,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 933 conditions, 508 events. 225/508 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2817 event pairs, 224 based on Foata normal form. 25/419 useless extension candidates. Maximal degree in co-relation 855. Up to 403 conditions per place. [2022-12-05 20:29:01,297 INFO L137 encePairwiseOnDemand]: 32/35 looper letters, 25 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2022-12-05 20:29:01,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 126 flow [2022-12-05 20:29:01,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-05 20:29:01,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-05 20:29:01,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 42 transitions. [2022-12-05 20:29:01,309 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6 [2022-12-05 20:29:01,310 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 82 flow. Second operand 2 states and 42 transitions. [2022-12-05 20:29:01,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 126 flow [2022-12-05 20:29:01,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 118 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-05 20:29:01,316 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 68 flow [2022-12-05 20:29:01,317 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=68, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2022-12-05 20:29:01,321 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2022-12-05 20:29:01,321 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 68 flow [2022-12-05 20:29:01,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:29:01,322 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:29:01,322 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-05 20:29:01,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 20:29:01,323 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 20:29:01,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:29:01,324 INFO L85 PathProgramCache]: Analyzing trace with hash 18525369, now seen corresponding path program 1 times [2022-12-05 20:29:01,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:29:01,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760823755] [2022-12-05 20:29:01,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:29:01,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:29:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:29:01,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:29:01,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:29:01,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760823755] [2022-12-05 20:29:01,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760823755] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:29:01,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:29:01,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 20:29:01,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223661013] [2022-12-05 20:29:01,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:29:01,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 20:29:01,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:29:01,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 20:29:01,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 20:29:01,683 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 35 [2022-12-05 20:29:01,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 68 flow. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:29:01,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:29:01,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 35 [2022-12-05 20:29:01,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:29:01,954 INFO L130 PetriNetUnfolder]: 861/1450 cut-off events. [2022-12-05 20:29:01,954 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 20:29:01,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2911 conditions, 1450 events. 861/1450 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 7213 event pairs, 414 based on Foata normal form. 0/1214 useless extension candidates. Maximal degree in co-relation 2908. Up to 1026 conditions per place. [2022-12-05 20:29:01,964 INFO L137 encePairwiseOnDemand]: 28/35 looper letters, 41 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2022-12-05 20:29:01,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 192 flow [2022-12-05 20:29:01,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:29:01,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:29:01,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2022-12-05 20:29:01,967 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2022-12-05 20:29:01,967 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 68 flow. Second operand 3 states and 48 transitions. [2022-12-05 20:29:01,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 47 transitions, 192 flow [2022-12-05 20:29:01,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 47 transitions, 192 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-05 20:29:01,969 INFO L231 Difference]: Finished difference. Result has 37 places, 36 transitions, 104 flow [2022-12-05 20:29:01,970 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=37, PETRI_TRANSITIONS=36} [2022-12-05 20:29:01,970 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2022-12-05 20:29:01,970 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 36 transitions, 104 flow [2022-12-05 20:29:01,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:29:01,971 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:29:01,971 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-05 20:29:01,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 20:29:01,972 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 20:29:01,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:29:01,974 INFO L85 PathProgramCache]: Analyzing trace with hash 574281447, now seen corresponding path program 1 times [2022-12-05 20:29:01,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:29:01,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817461687] [2022-12-05 20:29:01,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:29:01,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:29:02,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:29:02,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:29:02,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:29:02,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817461687] [2022-12-05 20:29:02,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817461687] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:29:02,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:29:02,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 20:29:02,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563805481] [2022-12-05 20:29:02,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:29:02,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 20:29:02,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:29:02,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 20:29:02,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 20:29:02,192 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 35 [2022-12-05 20:29:02,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 104 flow. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:29:02,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:29:02,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 35 [2022-12-05 20:29:02,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:29:02,434 INFO L130 PetriNetUnfolder]: 935/1594 cut-off events. [2022-12-05 20:29:02,434 INFO L131 PetriNetUnfolder]: For 324/324 co-relation queries the response was YES. [2022-12-05 20:29:02,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3770 conditions, 1594 events. 935/1594 cut-off events. For 324/324 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 8301 event pairs, 490 based on Foata normal form. 90/1528 useless extension candidates. Maximal degree in co-relation 3765. Up to 1131 conditions per place. [2022-12-05 20:29:02,444 INFO L137 encePairwiseOnDemand]: 29/35 looper letters, 42 selfloop transitions, 9 changer transitions 3/54 dead transitions. [2022-12-05 20:29:02,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 54 transitions, 270 flow [2022-12-05 20:29:02,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:29:02,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:29:02,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 47 transitions. [2022-12-05 20:29:02,446 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2022-12-05 20:29:02,446 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 104 flow. Second operand 3 states and 47 transitions. [2022-12-05 20:29:02,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 54 transitions, 270 flow [2022-12-05 20:29:02,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 54 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 20:29:02,452 INFO L231 Difference]: Finished difference. Result has 39 places, 41 transitions, 167 flow [2022-12-05 20:29:02,453 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=39, PETRI_TRANSITIONS=41} [2022-12-05 20:29:02,453 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 0 predicate places. [2022-12-05 20:29:02,453 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 41 transitions, 167 flow [2022-12-05 20:29:02,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:29:02,454 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:29:02,454 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:29:02,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 20:29:02,454 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 20:29:02,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:29:02,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1126934600, now seen corresponding path program 1 times [2022-12-05 20:29:02,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:29:02,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078558108] [2022-12-05 20:29:02,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:29:02,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:29:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:29:02,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:29:02,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:29:02,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078558108] [2022-12-05 20:29:02,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078558108] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:29:02,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:29:02,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:29:02,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341333927] [2022-12-05 20:29:02,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:29:02,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 20:29:02,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:29:02,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 20:29:02,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 20:29:02,556 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2022-12-05 20:29:02,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 41 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:29:02,556 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:29:02,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2022-12-05 20:29:02,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:29:02,655 INFO L130 PetriNetUnfolder]: 137/276 cut-off events. [2022-12-05 20:29:02,656 INFO L131 PetriNetUnfolder]: For 141/168 co-relation queries the response was YES. [2022-12-05 20:29:02,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 276 events. 137/276 cut-off events. For 141/168 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1134 event pairs, 48 based on Foata normal form. 50/276 useless extension candidates. Maximal degree in co-relation 650. Up to 185 conditions per place. [2022-12-05 20:29:02,657 INFO L137 encePairwiseOnDemand]: 33/35 looper letters, 23 selfloop transitions, 1 changer transitions 4/32 dead transitions. [2022-12-05 20:29:02,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 32 transitions, 148 flow [2022-12-05 20:29:02,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:29:02,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:29:02,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2022-12-05 20:29:02,659 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2022-12-05 20:29:02,659 INFO L175 Difference]: Start difference. First operand has 39 places, 41 transitions, 167 flow. Second operand 3 states and 50 transitions. [2022-12-05 20:29:02,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 32 transitions, 148 flow [2022-12-05 20:29:02,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 32 transitions, 136 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-05 20:29:02,661 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 58 flow [2022-12-05 20:29:02,661 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2022-12-05 20:29:02,663 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, -7 predicate places. [2022-12-05 20:29:02,663 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 58 flow [2022-12-05 20:29:02,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:29:02,663 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:29:02,663 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:29:02,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 20:29:02,663 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 20:29:02,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:29:02,664 INFO L85 PathProgramCache]: Analyzing trace with hash -684505865, now seen corresponding path program 1 times [2022-12-05 20:29:02,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:29:02,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836785752] [2022-12-05 20:29:02,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:29:02,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:29:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:29:03,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:29:03,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:29:03,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836785752] [2022-12-05 20:29:03,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836785752] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:29:03,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:29:03,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 20:29:03,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892509323] [2022-12-05 20:29:03,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:29:03,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 20:29:03,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:29:03,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 20:29:03,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 20:29:03,181 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2022-12-05 20:29:03,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:29:03,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:29:03,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2022-12-05 20:29:03,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:29:03,316 INFO L130 PetriNetUnfolder]: 108/235 cut-off events. [2022-12-05 20:29:03,317 INFO L131 PetriNetUnfolder]: For 42/65 co-relation queries the response was YES. [2022-12-05 20:29:03,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 235 events. 108/235 cut-off events. For 42/65 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1027 event pairs, 44 based on Foata normal form. 14/234 useless extension candidates. Maximal degree in co-relation 541. Up to 96 conditions per place. [2022-12-05 20:29:03,318 INFO L137 encePairwiseOnDemand]: 29/35 looper letters, 29 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2022-12-05 20:29:03,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 38 transitions, 173 flow [2022-12-05 20:29:03,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 20:29:03,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 20:29:03,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2022-12-05 20:29:03,320 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.37714285714285717 [2022-12-05 20:29:03,320 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 58 flow. Second operand 5 states and 66 transitions. [2022-12-05 20:29:03,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 38 transitions, 173 flow [2022-12-05 20:29:03,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 38 transitions, 170 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 20:29:03,321 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 92 flow [2022-12-05 20:29:03,321 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2022-12-05 20:29:03,322 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, -4 predicate places. [2022-12-05 20:29:03,322 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 92 flow [2022-12-05 20:29:03,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:29:03,322 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:29:03,323 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:29:03,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 20:29:03,323 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 20:29:03,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:29:03,323 INFO L85 PathProgramCache]: Analyzing trace with hash 2055807795, now seen corresponding path program 2 times [2022-12-05 20:29:03,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:29:03,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219464425] [2022-12-05 20:29:03,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:29:03,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:29:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:29:04,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:29:04,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:29:04,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219464425] [2022-12-05 20:29:04,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219464425] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:29:04,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:29:04,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-05 20:29:04,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942101672] [2022-12-05 20:29:04,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:29:04,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-05 20:29:04,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:29:04,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-05 20:29:04,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-12-05 20:29:04,753 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 35 [2022-12-05 20:29:04,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 92 flow. Second operand has 13 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:29:04,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:29:04,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 35 [2022-12-05 20:29:04,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:29:05,501 INFO L130 PetriNetUnfolder]: 295/613 cut-off events. [2022-12-05 20:29:05,502 INFO L131 PetriNetUnfolder]: For 204/204 co-relation queries the response was YES. [2022-12-05 20:29:05,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1696 conditions, 613 events. 295/613 cut-off events. For 204/204 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2995 event pairs, 22 based on Foata normal form. 0/612 useless extension candidates. Maximal degree in co-relation 1688. Up to 205 conditions per place. [2022-12-05 20:29:05,506 INFO L137 encePairwiseOnDemand]: 23/35 looper letters, 78 selfloop transitions, 19 changer transitions 0/97 dead transitions. [2022-12-05 20:29:05,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 97 transitions, 525 flow [2022-12-05 20:29:05,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-05 20:29:05,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-05 20:29:05,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 88 transitions. [2022-12-05 20:29:05,509 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.22857142857142856 [2022-12-05 20:29:05,509 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 92 flow. Second operand 11 states and 88 transitions. [2022-12-05 20:29:05,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 97 transitions, 525 flow [2022-12-05 20:29:05,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 97 transitions, 524 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 20:29:05,512 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 210 flow [2022-12-05 20:29:05,512 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=210, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2022-12-05 20:29:05,514 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2022-12-05 20:29:05,519 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 210 flow [2022-12-05 20:29:05,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:29:05,519 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:29:05,520 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:29:05,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 20:29:05,520 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 20:29:05,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:29:05,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1875479365, now seen corresponding path program 3 times [2022-12-05 20:29:05,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:29:05,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992642566] [2022-12-05 20:29:05,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:29:05,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:29:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:29:06,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:29:06,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:29:06,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992642566] [2022-12-05 20:29:06,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992642566] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:29:06,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:29:06,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 20:29:06,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586901857] [2022-12-05 20:29:06,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:29:06,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-05 20:29:06,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:29:06,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-05 20:29:06,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-05 20:29:06,247 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 35 [2022-12-05 20:29:06,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 210 flow. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:29:06,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:29:06,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 35 [2022-12-05 20:29:06,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:29:06,602 INFO L130 PetriNetUnfolder]: 337/723 cut-off events. [2022-12-05 20:29:06,602 INFO L131 PetriNetUnfolder]: For 844/844 co-relation queries the response was YES. [2022-12-05 20:29:06,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2415 conditions, 723 events. 337/723 cut-off events. For 844/844 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3700 event pairs, 126 based on Foata normal form. 0/721 useless extension candidates. Maximal degree in co-relation 2403. Up to 318 conditions per place. [2022-12-05 20:29:06,608 INFO L137 encePairwiseOnDemand]: 27/35 looper letters, 69 selfloop transitions, 18 changer transitions 0/87 dead transitions. [2022-12-05 20:29:06,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 87 transitions, 599 flow [2022-12-05 20:29:06,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 20:29:06,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 20:29:06,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 61 transitions. [2022-12-05 20:29:06,611 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.24897959183673468 [2022-12-05 20:29:06,611 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 210 flow. Second operand 7 states and 61 transitions. [2022-12-05 20:29:06,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 87 transitions, 599 flow [2022-12-05 20:29:06,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 87 transitions, 588 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-05 20:29:06,616 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 304 flow [2022-12-05 20:29:06,616 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=304, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2022-12-05 20:29:06,617 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 15 predicate places. [2022-12-05 20:29:06,617 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 304 flow [2022-12-05 20:29:06,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:29:06,618 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:29:06,618 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:29:06,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-05 20:29:06,618 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 20:29:06,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:29:06,618 INFO L85 PathProgramCache]: Analyzing trace with hash 2071367657, now seen corresponding path program 1 times [2022-12-05 20:29:06,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:29:06,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492036953] [2022-12-05 20:29:06,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:29:06,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:29:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:29:08,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:29:08,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:29:08,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492036953] [2022-12-05 20:29:08,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492036953] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:29:08,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:29:08,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-05 20:29:08,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066947140] [2022-12-05 20:29:08,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:29:08,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-05 20:29:08,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:29:08,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-05 20:29:08,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-12-05 20:29:08,573 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 35 [2022-12-05 20:29:08,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 304 flow. Second operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:29:08,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:29:08,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 35 [2022-12-05 20:29:08,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:29:09,970 INFO L130 PetriNetUnfolder]: 379/824 cut-off events. [2022-12-05 20:29:09,970 INFO L131 PetriNetUnfolder]: For 1609/1609 co-relation queries the response was YES. [2022-12-05 20:29:09,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2963 conditions, 824 events. 379/824 cut-off events. For 1609/1609 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4446 event pairs, 132 based on Foata normal form. 1/823 useless extension candidates. Maximal degree in co-relation 2948. Up to 599 conditions per place. [2022-12-05 20:29:09,978 INFO L137 encePairwiseOnDemand]: 21/35 looper letters, 80 selfloop transitions, 32 changer transitions 25/137 dead transitions. [2022-12-05 20:29:09,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 137 transitions, 1153 flow [2022-12-05 20:29:09,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-05 20:29:09,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-05 20:29:09,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 90 transitions. [2022-12-05 20:29:09,980 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.13533834586466165 [2022-12-05 20:29:09,980 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 304 flow. Second operand 19 states and 90 transitions. [2022-12-05 20:29:09,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 137 transitions, 1153 flow [2022-12-05 20:29:09,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 137 transitions, 1121 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-12-05 20:29:09,989 INFO L231 Difference]: Finished difference. Result has 83 places, 81 transitions, 717 flow [2022-12-05 20:29:09,989 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=717, PETRI_PLACES=83, PETRI_TRANSITIONS=81} [2022-12-05 20:29:09,991 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 44 predicate places. [2022-12-05 20:29:09,991 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 81 transitions, 717 flow [2022-12-05 20:29:09,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:29:09,991 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:29:09,992 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:29:09,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-05 20:29:09,992 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 20:29:09,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:29:09,992 INFO L85 PathProgramCache]: Analyzing trace with hash -32629949, now seen corresponding path program 4 times [2022-12-05 20:29:09,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:29:09,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574361474] [2022-12-05 20:29:09,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:29:09,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:29:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:29:10,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:29:10,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:29:10,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574361474] [2022-12-05 20:29:10,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574361474] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:29:10,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:29:10,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 20:29:10,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880451988] [2022-12-05 20:29:10,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:29:10,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 20:29:10,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:29:10,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 20:29:10,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 20:29:10,342 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2022-12-05 20:29:10,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 81 transitions, 717 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:29:10,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:29:10,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2022-12-05 20:29:10,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:29:10,507 INFO L130 PetriNetUnfolder]: 247/618 cut-off events. [2022-12-05 20:29:10,507 INFO L131 PetriNetUnfolder]: For 2347/2414 co-relation queries the response was YES. [2022-12-05 20:29:10,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2861 conditions, 618 events. 247/618 cut-off events. For 2347/2414 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3620 event pairs, 72 based on Foata normal form. 33/633 useless extension candidates. Maximal degree in co-relation 2832. Up to 366 conditions per place. [2022-12-05 20:29:10,514 INFO L137 encePairwiseOnDemand]: 29/35 looper letters, 72 selfloop transitions, 13 changer transitions 0/98 dead transitions. [2022-12-05 20:29:10,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 98 transitions, 1032 flow [2022-12-05 20:29:10,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 20:29:10,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 20:29:10,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2022-12-05 20:29:10,515 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.35428571428571426 [2022-12-05 20:29:10,515 INFO L175 Difference]: Start difference. First operand has 83 places, 81 transitions, 717 flow. Second operand 5 states and 62 transitions. [2022-12-05 20:29:10,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 98 transitions, 1032 flow [2022-12-05 20:29:10,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 98 transitions, 921 flow, removed 51 selfloop flow, removed 6 redundant places. [2022-12-05 20:29:10,527 INFO L231 Difference]: Finished difference. Result has 77 places, 83 transitions, 696 flow [2022-12-05 20:29:10,527 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=696, PETRI_PLACES=77, PETRI_TRANSITIONS=83} [2022-12-05 20:29:10,528 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 38 predicate places. [2022-12-05 20:29:10,528 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 83 transitions, 696 flow [2022-12-05 20:29:10,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:29:10,528 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:29:10,528 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:29:10,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-05 20:29:10,529 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 20:29:10,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:29:10,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1523368997, now seen corresponding path program 2 times [2022-12-05 20:29:10,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:29:10,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207686900] [2022-12-05 20:29:10,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:29:10,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:29:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:29:10,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:29:10,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:29:10,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207686900] [2022-12-05 20:29:10,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207686900] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:29:10,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:29:10,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 20:29:10,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010674701] [2022-12-05 20:29:10,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:29:10,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 20:29:10,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:29:11,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 20:29:11,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-05 20:29:11,000 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2022-12-05 20:29:11,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 83 transitions, 696 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:29:11,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:29:11,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2022-12-05 20:29:11,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:29:11,159 INFO L130 PetriNetUnfolder]: 141/386 cut-off events. [2022-12-05 20:29:11,159 INFO L131 PetriNetUnfolder]: For 1359/1359 co-relation queries the response was YES. [2022-12-05 20:29:11,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1631 conditions, 386 events. 141/386 cut-off events. For 1359/1359 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1956 event pairs, 30 based on Foata normal form. 12/395 useless extension candidates. Maximal degree in co-relation 1604. Up to 188 conditions per place. [2022-12-05 20:29:11,162 INFO L137 encePairwiseOnDemand]: 30/35 looper letters, 58 selfloop transitions, 13 changer transitions 0/72 dead transitions. [2022-12-05 20:29:11,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 72 transitions, 694 flow [2022-12-05 20:29:11,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 20:29:11,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 20:29:11,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 51 transitions. [2022-12-05 20:29:11,164 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.2914285714285714 [2022-12-05 20:29:11,164 INFO L175 Difference]: Start difference. First operand has 77 places, 83 transitions, 696 flow. Second operand 5 states and 51 transitions. [2022-12-05 20:29:11,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 72 transitions, 694 flow [2022-12-05 20:29:11,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 72 transitions, 649 flow, removed 15 selfloop flow, removed 5 redundant places. [2022-12-05 20:29:11,171 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 486 flow [2022-12-05 20:29:11,172 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=486, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2022-12-05 20:29:11,172 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 36 predicate places. [2022-12-05 20:29:11,173 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 486 flow [2022-12-05 20:29:11,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:29:11,173 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:29:11,173 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:29:11,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-05 20:29:11,173 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-05 20:29:11,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:29:11,174 INFO L85 PathProgramCache]: Analyzing trace with hash 738332575, now seen corresponding path program 3 times [2022-12-05 20:29:11,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:29:11,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767204187] [2022-12-05 20:29:11,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:29:11,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:29:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:29:12,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-05 20:29:12,143 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.InterpolantChecker.checkInductivity(InterpolantChecker.java:409) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:383) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:154) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:848) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:776) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:284) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:350) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-05 20:29:12,147 INFO L158 Benchmark]: Toolchain (without parser) took 40201.96ms. Allocated memory was 176.2MB in the beginning and 368.1MB in the end (delta: 191.9MB). Free memory was 148.8MB in the beginning and 155.7MB in the end (delta: -6.8MB). Peak memory consumption was 228.8MB. Max. memory is 8.0GB. [2022-12-05 20:29:12,147 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 127.9MB. Free memory is still 104.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 20:29:12,150 INFO L158 Benchmark]: CACSL2BoogieTranslator took 924.90ms. Allocated memory is still 176.2MB. Free memory was 148.8MB in the beginning and 140.7MB in the end (delta: 8.1MB). Peak memory consumption was 54.2MB. Max. memory is 8.0GB. [2022-12-05 20:29:12,151 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.96ms. Allocated memory is still 176.2MB. Free memory was 140.7MB in the beginning and 137.3MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-05 20:29:12,151 INFO L158 Benchmark]: Boogie Preprocessor took 43.33ms. Allocated memory is still 176.2MB. Free memory was 137.3MB in the beginning and 134.5MB in the end (delta: 2.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-05 20:29:12,151 INFO L158 Benchmark]: RCFGBuilder took 631.78ms. Allocated memory is still 176.2MB. Free memory was 134.5MB in the beginning and 111.1MB in the end (delta: 23.4MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-12-05 20:29:12,152 INFO L158 Benchmark]: TraceAbstraction took 38527.54ms. Allocated memory was 176.2MB in the beginning and 368.1MB in the end (delta: 191.9MB). Free memory was 110.6MB in the beginning and 155.7MB in the end (delta: -45.1MB). Peak memory consumption was 190.3MB. Max. memory is 8.0GB. [2022-12-05 20:29:12,153 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 127.9MB. Free memory is still 104.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 924.90ms. Allocated memory is still 176.2MB. Free memory was 148.8MB in the beginning and 140.7MB in the end (delta: 8.1MB). Peak memory consumption was 54.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 67.96ms. Allocated memory is still 176.2MB. Free memory was 140.7MB in the beginning and 137.3MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.33ms. Allocated memory is still 176.2MB. Free memory was 137.3MB in the beginning and 134.5MB in the end (delta: 2.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 631.78ms. Allocated memory is still 176.2MB. Free memory was 134.5MB in the beginning and 111.1MB in the end (delta: 23.4MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * TraceAbstraction took 38527.54ms. Allocated memory was 176.2MB in the beginning and 368.1MB in the end (delta: 191.9MB). Free memory was 110.6MB in the beginning and 155.7MB in the end (delta: -45.1MB). Peak memory consumption was 190.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 26.9s, 162 PlacesBefore, 39 PlacesAfterwards, 162 TransitionsBefore, 35 TransitionsAfterwards, 2604 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 76 TrivialYvCompositions, 50 ConcurrentYvCompositions, 4 ChoiceCompositions, 132 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1835, independent: 1744, independent conditional: 1744, independent unconditional: 0, dependent: 81, dependent conditional: 81, dependent unconditional: 0, unknown: 10, unknown conditional: 10, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1835, independent: 1744, independent conditional: 0, independent unconditional: 1744, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 10, unknown conditional: 0, unknown unconditional: 10] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1835, independent: 1744, independent conditional: 0, independent unconditional: 1744, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 10, unknown conditional: 0, unknown unconditional: 10] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1835, independent: 1744, independent conditional: 0, independent unconditional: 1744, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 10, unknown conditional: 0, unknown unconditional: 10] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1512, independent: 1475, independent conditional: 0, independent unconditional: 1475, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 7, unknown conditional: 0, unknown unconditional: 7] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1512, independent: 1472, independent conditional: 0, independent unconditional: 1472, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 40, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 7, unknown conditional: 0, unknown unconditional: 7] , SemanticIndependenceRelation.Query Time [ms]: [ total: 15308, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 265, dependent conditional: 0, dependent unconditional: 265, unknown: 15035, unknown conditional: 0, unknown unconditional: 15035] ], Cache Queries: [ total: 1835, independent: 269, independent conditional: 0, independent unconditional: 269, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 1515, unknown conditional: 0, unknown unconditional: 1515] , Statistics on independence cache: Total cache size (in pairs): 2485, Positive cache size: 2455, Positive conditional cache size: 0, Positive unconditional cache size: 2455, Negative cache size: 30, Negative conditional cache size: 0, Negative unconditional cache size: 30, Unknown cache size: 7, Unknown conditional cache size: 0, Unknown unconditional cache size: 7, Eliminated conditions: 0, Maximal queried relation: -1 - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.InterpolantChecker.checkInductivity(InterpolantChecker.java:409) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-12-05 20:29:12,231 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...