/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/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 15:01:03,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 15:01:03,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 15:01:03,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 15:01:03,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 15:01:03,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 15:01:03,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 15:01:03,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 15:01:03,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 15:01:03,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 15:01:03,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 15:01:03,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 15:01:03,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 15:01:04,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 15:01:04,001 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 15:01:04,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 15:01:04,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 15:01:04,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 15:01:04,005 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 15:01:04,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 15:01:04,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 15:01:04,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 15:01:04,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 15:01:04,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 15:01:04,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-12-12 15:01:04,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 15:01:04,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 15:01:04,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 15:01:04,035 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 [2022-12-12 15:01:04,073 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 15:01:04,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 15:01:04,075 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 15:01:04,075 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 15:01:04,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 15:01:04,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 15:01:04,077 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 15:01:04,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 15:01:04,077 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 15:01:04,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 15:01:04,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 15:01:04,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 15:01:04,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 15:01:04,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 15:01:04,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 15:01:04,078 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 15:01:04,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 15:01:04,079 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 15:01:04,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 15:01:04,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 15:01:04,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 15:01:04,079 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 15:01:04,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 15:01:04,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 15:01:04,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 15:01:04,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 15:01:04,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 15:01:04,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 15:01:04,080 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 15:01:04,080 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 15:01:04,080 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-12 15:01:04,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 15:01:04,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 15:01:04,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 15:01:04,413 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 15:01:04,414 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 15:01:04,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i [2022-12-12 15:01:05,469 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 15:01:05,727 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 15:01:05,728 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i [2022-12-12 15:01:05,740 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4b4c56e3/45f45d3c7b0341bb8e379ae42ee76624/FLAGe56e2f6f7 [2022-12-12 15:01:05,753 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4b4c56e3/45f45d3c7b0341bb8e379ae42ee76624 [2022-12-12 15:01:05,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 15:01:05,756 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 15:01:05,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 15:01:05,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 15:01:05,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 15:01:05,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 03:01:05" (1/1) ... [2022-12-12 15:01:05,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43296661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:01:05, skipping insertion in model container [2022-12-12 15:01:05,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 03:01:05" (1/1) ... [2022-12-12 15:01:05,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 15:01:05,810 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 15:01:05,964 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i[1103,1116] [2022-12-12 15:01:06,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 15:01:06,142 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 15:01:06,154 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i[1103,1116] [2022-12-12 15:01:06,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 15:01:06,230 INFO L208 MainTranslator]: Completed translation [2022-12-12 15:01:06,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:01:06 WrapperNode [2022-12-12 15:01:06,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 15:01:06,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 15:01:06,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 15:01:06,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 15:01:06,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:01:06" (1/1) ... [2022-12-12 15:01:06,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:01:06" (1/1) ... [2022-12-12 15:01:06,290 INFO L138 Inliner]: procedures = 162, calls = 40, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 77 [2022-12-12 15:01:06,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 15:01:06,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 15:01:06,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 15:01:06,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 15:01:06,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:01:06" (1/1) ... [2022-12-12 15:01:06,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:01:06" (1/1) ... [2022-12-12 15:01:06,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:01:06" (1/1) ... [2022-12-12 15:01:06,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:01:06" (1/1) ... [2022-12-12 15:01:06,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:01:06" (1/1) ... [2022-12-12 15:01:06,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:01:06" (1/1) ... [2022-12-12 15:01:06,324 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:01:06" (1/1) ... [2022-12-12 15:01:06,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:01:06" (1/1) ... [2022-12-12 15:01:06,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 15:01:06,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 15:01:06,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 15:01:06,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 15:01:06,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:01:06" (1/1) ... [2022-12-12 15:01:06,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 15:01:06,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:01:06,363 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) [2022-12-12 15:01:06,376 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 [2022-12-12 15:01:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 15:01:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-12-12 15:01:06,401 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-12-12 15:01:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 15:01:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-12 15:01:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 15:01:06,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 15:01:06,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 15:01:06,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 15:01:06,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 15:01:06,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 15:01:06,403 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 15:01:06,589 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 15:01:06,591 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 15:01:06,779 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 15:01:06,785 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 15:01:06,786 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 15:01:06,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 03:01:06 BoogieIcfgContainer [2022-12-12 15:01:06,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 15:01:06,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 15:01:06,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 15:01:06,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 15:01:06,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 03:01:05" (1/3) ... [2022-12-12 15:01:06,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce13f43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 03:01:06, skipping insertion in model container [2022-12-12 15:01:06,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:01:06" (2/3) ... [2022-12-12 15:01:06,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce13f43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 03:01:06, skipping insertion in model container [2022-12-12 15:01:06,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 03:01:06" (3/3) ... [2022-12-12 15:01:06,795 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_29-multiple-protecting2-vesal_true.i [2022-12-12 15:01:06,810 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 15:01:06,810 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-12-12 15:01:06,810 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 15:01:06,852 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-12 15:01:06,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 101 transitions, 210 flow [2022-12-12 15:01:06,940 INFO L130 PetriNetUnfolder]: 3/100 cut-off events. [2022-12-12 15:01:06,941 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 15:01:06,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 100 events. 3/100 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2022-12-12 15:01:06,945 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 101 transitions, 210 flow [2022-12-12 15:01:06,948 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 86 transitions, 175 flow [2022-12-12 15:01:06,950 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 15:01:06,979 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 86 transitions, 175 flow [2022-12-12 15:01:06,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 86 transitions, 175 flow [2022-12-12 15:01:07,006 INFO L130 PetriNetUnfolder]: 2/86 cut-off events. [2022-12-12 15:01:07,007 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 15:01:07,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 86 events. 2/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2022-12-12 15:01:07,009 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 86 transitions, 175 flow [2022-12-12 15:01:07,010 INFO L226 LiptonReduction]: Number of co-enabled transitions 1152 [2022-12-12 15:01:10,458 INFO L241 LiptonReduction]: Total number of compositions: 70 [2022-12-12 15:01:10,479 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 15:01:10,486 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;@6edc9498, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 15:01:10,486 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 15:01:10,493 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2022-12-12 15:01:10,493 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 15:01:10,493 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:01:10,494 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-12 15:01:10,494 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-12 15:01:10,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:01:10,499 INFO L85 PathProgramCache]: Analyzing trace with hash 10514847, now seen corresponding path program 1 times [2022-12-12 15:01:10,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:01:10,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497171917] [2022-12-12 15:01:10,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:01:10,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:01:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:01:10,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:01:10,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:01:10,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497171917] [2022-12-12 15:01:10,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497171917] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:01:10,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:01:10,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 15:01:10,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925990045] [2022-12-12 15:01:10,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:01:10,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-12 15:01:10,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:01:10,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-12 15:01:10,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-12 15:01:10,685 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2022-12-12 15:01:10,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 65 flow. Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:01:10,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:01:10,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2022-12-12 15:01:10,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:01:10,782 INFO L130 PetriNetUnfolder]: 96/251 cut-off events. [2022-12-12 15:01:10,782 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 15:01:10,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 251 events. 96/251 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1190 event pairs, 96 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 461. Up to 215 conditions per place. [2022-12-12 15:01:10,787 INFO L137 encePairwiseOnDemand]: 30/31 looper letters, 22 selfloop transitions, 0 changer transitions 0/30 dead transitions. [2022-12-12 15:01:10,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 30 transitions, 107 flow [2022-12-12 15:01:10,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-12 15:01:10,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-12 15:01:10,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 39 transitions. [2022-12-12 15:01:10,797 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6290322580645161 [2022-12-12 15:01:10,798 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 65 flow. Second operand 2 states and 39 transitions. [2022-12-12 15:01:10,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 30 transitions, 107 flow [2022-12-12 15:01:10,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 106 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-12 15:01:10,803 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 62 flow [2022-12-12 15:01:10,805 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=62, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2022-12-12 15:01:10,810 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2022-12-12 15:01:10,810 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 62 flow [2022-12-12 15:01:10,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:01:10,811 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:01:10,811 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-12 15:01:10,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 15:01:10,812 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-12 15:01:10,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:01:10,812 INFO L85 PathProgramCache]: Analyzing trace with hash 325897514, now seen corresponding path program 1 times [2022-12-12 15:01:10,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:01:10,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677407769] [2022-12-12 15:01:10,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:01:10,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:01:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:01:10,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:01:10,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:01:10,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677407769] [2022-12-12 15:01:10,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677407769] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:01:10,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:01:10,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 15:01:10,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214122019] [2022-12-12 15:01:10,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:01:10,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 15:01:10,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:01:10,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 15:01:10,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 15:01:10,991 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2022-12-12 15:01:10,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:01:10,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:01:10,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2022-12-12 15:01:10,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:01:11,062 INFO L130 PetriNetUnfolder]: 98/256 cut-off events. [2022-12-12 15:01:11,063 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 15:01:11,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 256 events. 98/256 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1221 event pairs, 35 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 478. Up to 152 conditions per place. [2022-12-12 15:01:11,065 INFO L137 encePairwiseOnDemand]: 27/31 looper letters, 27 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2022-12-12 15:01:11,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 136 flow [2022-12-12 15:01:11,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 15:01:11,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 15:01:11,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2022-12-12 15:01:11,067 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5591397849462365 [2022-12-12 15:01:11,067 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 62 flow. Second operand 3 states and 52 transitions. [2022-12-12 15:01:11,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 136 flow [2022-12-12 15:01:11,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 37 transitions, 136 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-12 15:01:11,069 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 73 flow [2022-12-12 15:01:11,069 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2022-12-12 15:01:11,070 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2022-12-12 15:01:11,070 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 73 flow [2022-12-12 15:01:11,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:01:11,070 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:01:11,070 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:01:11,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 15:01:11,071 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-12 15:01:11,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:01:11,071 INFO L85 PathProgramCache]: Analyzing trace with hash -345149871, now seen corresponding path program 1 times [2022-12-12 15:01:11,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:01:11,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514584741] [2022-12-12 15:01:11,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:01:11,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:01:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:01:11,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:01:11,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:01:11,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514584741] [2022-12-12 15:01:11,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514584741] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:01:11,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:01:11,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 15:01:11,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005144777] [2022-12-12 15:01:11,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:01:11,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 15:01:11,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:01:11,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 15:01:11,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 15:01:11,203 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2022-12-12 15:01:11,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:01:11,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:01:11,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2022-12-12 15:01:11,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:01:11,312 INFO L130 PetriNetUnfolder]: 99/259 cut-off events. [2022-12-12 15:01:11,312 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-12-12 15:01:11,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 529 conditions, 259 events. 99/259 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1209 event pairs, 26 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 524. Up to 96 conditions per place. [2022-12-12 15:01:11,317 INFO L137 encePairwiseOnDemand]: 23/31 looper letters, 40 selfloop transitions, 10 changer transitions 0/57 dead transitions. [2022-12-12 15:01:11,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 57 transitions, 233 flow [2022-12-12 15:01:11,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 15:01:11,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 15:01:11,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2022-12-12 15:01:11,322 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5612903225806452 [2022-12-12 15:01:11,322 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 73 flow. Second operand 5 states and 87 transitions. [2022-12-12 15:01:11,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 57 transitions, 233 flow [2022-12-12 15:01:11,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 57 transitions, 223 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-12 15:01:11,324 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 127 flow [2022-12-12 15:01:11,324 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=127, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2022-12-12 15:01:11,326 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2022-12-12 15:01:11,326 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 127 flow [2022-12-12 15:01:11,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:01:11,326 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:01:11,326 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:01:11,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 15:01:11,326 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-12 15:01:11,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:01:11,327 INFO L85 PathProgramCache]: Analyzing trace with hash -2108695724, now seen corresponding path program 1 times [2022-12-12 15:01:11,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:01:11,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825008337] [2022-12-12 15:01:11,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:01:11,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:01:11,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:01:11,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:01:11,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:01:11,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825008337] [2022-12-12 15:01:11,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825008337] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:01:11,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:01:11,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 15:01:11,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952637056] [2022-12-12 15:01:11,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:01:11,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 15:01:11,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:01:11,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 15:01:11,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 15:01:11,442 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2022-12-12 15:01:11,442 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 127 flow. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:01:11,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:01:11,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2022-12-12 15:01:11,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:01:11,538 INFO L130 PetriNetUnfolder]: 88/242 cut-off events. [2022-12-12 15:01:11,538 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2022-12-12 15:01:11,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 242 events. 88/242 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1158 event pairs, 17 based on Foata normal form. 10/204 useless extension candidates. Maximal degree in co-relation 585. Up to 75 conditions per place. [2022-12-12 15:01:11,540 INFO L137 encePairwiseOnDemand]: 22/31 looper letters, 41 selfloop transitions, 9 changer transitions 3/59 dead transitions. [2022-12-12 15:01:11,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 59 transitions, 315 flow [2022-12-12 15:01:11,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 15:01:11,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 15:01:11,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2022-12-12 15:01:11,543 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5 [2022-12-12 15:01:11,543 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 127 flow. Second operand 6 states and 93 transitions. [2022-12-12 15:01:11,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 59 transitions, 315 flow [2022-12-12 15:01:11,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 59 transitions, 308 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-12 15:01:11,548 INFO L231 Difference]: Finished difference. Result has 49 places, 31 transitions, 138 flow [2022-12-12 15:01:11,548 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=138, PETRI_PLACES=49, PETRI_TRANSITIONS=31} [2022-12-12 15:01:11,549 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 15 predicate places. [2022-12-12 15:01:11,550 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 31 transitions, 138 flow [2022-12-12 15:01:11,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:01:11,550 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:01:11,550 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:01:11,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 15:01:11,550 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-12 15:01:11,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:01:11,551 INFO L85 PathProgramCache]: Analyzing trace with hash -217052219, now seen corresponding path program 1 times [2022-12-12 15:01:11,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:01:11,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227405850] [2022-12-12 15:01:11,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:01:11,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:01:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:01:11,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:01:11,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:01:11,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227405850] [2022-12-12 15:01:11,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227405850] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:01:11,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:01:11,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 15:01:11,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947852581] [2022-12-12 15:01:11,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:01:11,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 15:01:11,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:01:11,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 15:01:11,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-12 15:01:11,676 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2022-12-12 15:01:11,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 31 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:01:11,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:01:11,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2022-12-12 15:01:11,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:01:11,805 INFO L130 PetriNetUnfolder]: 71/194 cut-off events. [2022-12-12 15:01:11,805 INFO L131 PetriNetUnfolder]: For 171/171 co-relation queries the response was YES. [2022-12-12 15:01:11,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 544 conditions, 194 events. 71/194 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 831 event pairs, 10 based on Foata normal form. 9/177 useless extension candidates. Maximal degree in co-relation 534. Up to 63 conditions per place. [2022-12-12 15:01:11,807 INFO L137 encePairwiseOnDemand]: 23/31 looper letters, 34 selfloop transitions, 15 changer transitions 0/55 dead transitions. [2022-12-12 15:01:11,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 55 transitions, 312 flow [2022-12-12 15:01:11,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 15:01:11,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 15:01:11,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2022-12-12 15:01:11,808 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2022-12-12 15:01:11,808 INFO L175 Difference]: Start difference. First operand has 49 places, 31 transitions, 138 flow. Second operand 10 states and 119 transitions. [2022-12-12 15:01:11,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 55 transitions, 312 flow [2022-12-12 15:01:11,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 55 transitions, 276 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-12-12 15:01:11,811 INFO L231 Difference]: Finished difference. Result has 47 places, 35 transitions, 157 flow [2022-12-12 15:01:11,811 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=157, PETRI_PLACES=47, PETRI_TRANSITIONS=35} [2022-12-12 15:01:11,811 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 13 predicate places. [2022-12-12 15:01:11,812 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 35 transitions, 157 flow [2022-12-12 15:01:11,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:01:11,812 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:01:11,812 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:01:11,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 15:01:11,812 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-12 15:01:11,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:01:11,813 INFO L85 PathProgramCache]: Analyzing trace with hash -495165216, now seen corresponding path program 1 times [2022-12-12 15:01:11,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:01:11,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110109628] [2022-12-12 15:01:11,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:01:11,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:01:11,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:01:11,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:01:11,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:01:11,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110109628] [2022-12-12 15:01:11,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110109628] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:01:11,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:01:11,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 15:01:11,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122464615] [2022-12-12 15:01:11,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:01:11,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 15:01:11,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:01:11,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 15:01:11,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 15:01:11,873 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 31 [2022-12-12 15:01:11,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 35 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:01:11,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:01:11,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 31 [2022-12-12 15:01:11,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:01:11,931 INFO L130 PetriNetUnfolder]: 53/173 cut-off events. [2022-12-12 15:01:11,931 INFO L131 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2022-12-12 15:01:11,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 173 events. 53/173 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 714 event pairs, 16 based on Foata normal form. 29/170 useless extension candidates. Maximal degree in co-relation 471. Up to 89 conditions per place. [2022-12-12 15:01:11,932 INFO L137 encePairwiseOnDemand]: 18/31 looper letters, 22 selfloop transitions, 13 changer transitions 6/43 dead transitions. [2022-12-12 15:01:11,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 43 transitions, 261 flow [2022-12-12 15:01:11,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 15:01:11,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 15:01:11,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2022-12-12 15:01:11,934 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5268817204301075 [2022-12-12 15:01:11,934 INFO L175 Difference]: Start difference. First operand has 47 places, 35 transitions, 157 flow. Second operand 3 states and 49 transitions. [2022-12-12 15:01:11,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 43 transitions, 261 flow [2022-12-12 15:01:11,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 43 transitions, 233 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-12-12 15:01:11,938 INFO L231 Difference]: Finished difference. Result has 44 places, 30 transitions, 149 flow [2022-12-12 15:01:11,938 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=44, PETRI_TRANSITIONS=30} [2022-12-12 15:01:11,940 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 10 predicate places. [2022-12-12 15:01:11,940 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 30 transitions, 149 flow [2022-12-12 15:01:11,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:01:11,940 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:01:11,940 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:01:11,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 15:01:11,941 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-12 15:01:11,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:01:11,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1829845790, now seen corresponding path program 1 times [2022-12-12 15:01:11,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:01:11,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555740547] [2022-12-12 15:01:11,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:01:11,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:01:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:01:12,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:01:12,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:01:12,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555740547] [2022-12-12 15:01:12,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555740547] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:01:12,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:01:12,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 15:01:12,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844376819] [2022-12-12 15:01:12,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:01:12,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 15:01:12,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:01:12,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 15:01:12,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-12 15:01:12,049 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2022-12-12 15:01:12,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 30 transitions, 149 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:01:12,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:01:12,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2022-12-12 15:01:12,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:01:12,110 INFO L130 PetriNetUnfolder]: 26/107 cut-off events. [2022-12-12 15:01:12,110 INFO L131 PetriNetUnfolder]: For 114/118 co-relation queries the response was YES. [2022-12-12 15:01:12,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 107 events. 26/107 cut-off events. For 114/118 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 360 event pairs, 9 based on Foata normal form. 9/107 useless extension candidates. Maximal degree in co-relation 343. Up to 43 conditions per place. [2022-12-12 15:01:12,111 INFO L137 encePairwiseOnDemand]: 24/31 looper letters, 27 selfloop transitions, 9 changer transitions 1/42 dead transitions. [2022-12-12 15:01:12,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 269 flow [2022-12-12 15:01:12,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 15:01:12,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 15:01:12,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2022-12-12 15:01:12,113 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.37327188940092165 [2022-12-12 15:01:12,113 INFO L175 Difference]: Start difference. First operand has 44 places, 30 transitions, 149 flow. Second operand 7 states and 81 transitions. [2022-12-12 15:01:12,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 269 flow [2022-12-12 15:01:12,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 42 transitions, 241 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-12 15:01:12,115 INFO L231 Difference]: Finished difference. Result has 42 places, 30 transitions, 150 flow [2022-12-12 15:01:12,115 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=150, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2022-12-12 15:01:12,115 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2022-12-12 15:01:12,116 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 150 flow [2022-12-12 15:01:12,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:01:12,116 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:01:12,116 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:01:12,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 15:01:12,116 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-12 15:01:12,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:01:12,125 INFO L85 PathProgramCache]: Analyzing trace with hash 633227669, now seen corresponding path program 1 times [2022-12-12 15:01:12,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:01:12,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944545476] [2022-12-12 15:01:12,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:01:12,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:01:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:01:12,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:01:12,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:01:12,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944545476] [2022-12-12 15:01:12,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944545476] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:01:12,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:01:12,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 15:01:12,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233982634] [2022-12-12 15:01:12,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:01:12,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 15:01:12,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:01:12,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 15:01:12,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 15:01:12,284 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 31 [2022-12-12 15:01:12,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) [2022-12-12 15:01:12,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:01:12,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 31 [2022-12-12 15:01:12,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:01:12,323 INFO L130 PetriNetUnfolder]: 27/102 cut-off events. [2022-12-12 15:01:12,324 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-12-12 15:01:12,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 102 events. 27/102 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 308 event pairs, 3 based on Foata normal form. 8/98 useless extension candidates. Maximal degree in co-relation 315. Up to 50 conditions per place. [2022-12-12 15:01:12,325 INFO L137 encePairwiseOnDemand]: 25/31 looper letters, 25 selfloop transitions, 9 changer transitions 0/36 dead transitions. [2022-12-12 15:01:12,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 36 transitions, 238 flow [2022-12-12 15:01:12,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 15:01:12,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 15:01:12,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 34 transitions. [2022-12-12 15:01:12,326 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.27419354838709675 [2022-12-12 15:01:12,326 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 150 flow. Second operand 4 states and 34 transitions. [2022-12-12 15:01:12,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 36 transitions, 238 flow [2022-12-12 15:01:12,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 36 transitions, 220 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-12 15:01:12,328 INFO L231 Difference]: Finished difference. Result has 39 places, 29 transitions, 141 flow [2022-12-12 15:01:12,328 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=141, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2022-12-12 15:01:12,330 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2022-12-12 15:01:12,330 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 141 flow [2022-12-12 15:01:12,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) [2022-12-12 15:01:12,330 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:01:12,330 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:01:12,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 15:01:12,332 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-12 15:01:12,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:01:12,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1634709281, now seen corresponding path program 1 times [2022-12-12 15:01:12,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:01:12,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007393024] [2022-12-12 15:01:12,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:01:12,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:01:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:01:12,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:01:12,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:01:12,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007393024] [2022-12-12 15:01:12,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007393024] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:01:12,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:01:12,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 15:01:12,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864466183] [2022-12-12 15:01:12,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:01:12,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 15:01:12,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:01:12,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 15:01:12,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 15:01:12,482 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2022-12-12 15:01:12,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 141 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:01:12,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:01:12,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2022-12-12 15:01:12,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:01:12,535 INFO L130 PetriNetUnfolder]: 23/92 cut-off events. [2022-12-12 15:01:12,535 INFO L131 PetriNetUnfolder]: For 57/58 co-relation queries the response was YES. [2022-12-12 15:01:12,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 92 events. 23/92 cut-off events. For 57/58 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 277 event pairs, 14 based on Foata normal form. 4/89 useless extension candidates. Maximal degree in co-relation 281. Up to 56 conditions per place. [2022-12-12 15:01:12,536 INFO L137 encePairwiseOnDemand]: 25/31 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2022-12-12 15:01:12,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 34 transitions, 210 flow [2022-12-12 15:01:12,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 15:01:12,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 15:01:12,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2022-12-12 15:01:12,537 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2022-12-12 15:01:12,537 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 141 flow. Second operand 6 states and 64 transitions. [2022-12-12 15:01:12,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 34 transitions, 210 flow [2022-12-12 15:01:12,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 34 transitions, 201 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-12 15:01:12,539 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2022-12-12 15:01:12,539 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2022-12-12 15:01:12,539 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2022-12-12 15:01:12,540 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2022-12-12 15:01:12,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:01:12,545 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 15:01:12,545 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-12-12 15:01:12,546 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-12-12 15:01:12,546 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 15:01:12,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-12 15:01:12,546 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:01:12,549 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 15:01:12,549 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 15:01:12,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 03:01:12 BasicIcfg [2022-12-12 15:01:12,554 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 15:01:12,555 INFO L158 Benchmark]: Toolchain (without parser) took 6799.26ms. Allocated memory was 182.5MB in the beginning and 220.2MB in the end (delta: 37.7MB). Free memory was 142.1MB in the beginning and 112.9MB in the end (delta: 29.1MB). Peak memory consumption was 67.4MB. Max. memory is 8.0GB. [2022-12-12 15:01:12,555 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 182.5MB. Free memory is still 159.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 15:01:12,555 INFO L158 Benchmark]: CACSL2BoogieTranslator took 474.96ms. Allocated memory is still 182.5MB. Free memory was 141.6MB in the beginning and 122.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-12-12 15:01:12,555 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.73ms. Allocated memory is still 182.5MB. Free memory was 122.2MB in the beginning and 120.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 15:01:12,556 INFO L158 Benchmark]: Boogie Preprocessor took 35.30ms. Allocated memory is still 182.5MB. Free memory was 120.6MB in the beginning and 119.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 15:01:12,556 INFO L158 Benchmark]: RCFGBuilder took 460.35ms. Allocated memory is still 182.5MB. Free memory was 119.0MB in the beginning and 103.8MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-12-12 15:01:12,557 INFO L158 Benchmark]: TraceAbstraction took 5764.77ms. Allocated memory was 182.5MB in the beginning and 220.2MB in the end (delta: 37.7MB). Free memory was 102.8MB in the beginning and 112.9MB in the end (delta: -10.2MB). Peak memory consumption was 28.6MB. Max. memory is 8.0GB. [2022-12-12 15:01:12,559 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 182.5MB. Free memory is still 159.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 474.96ms. Allocated memory is still 182.5MB. Free memory was 141.6MB in the beginning and 122.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 56.73ms. Allocated memory is still 182.5MB. Free memory was 122.2MB in the beginning and 120.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.30ms. Allocated memory is still 182.5MB. Free memory was 120.6MB in the beginning and 119.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 460.35ms. Allocated memory is still 182.5MB. Free memory was 119.0MB in the beginning and 103.8MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 5764.77ms. Allocated memory was 182.5MB in the beginning and 220.2MB in the end (delta: 37.7MB). Free memory was 102.8MB in the beginning and 112.9MB in the end (delta: -10.2MB). Peak memory consumption was 28.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.4s, 88 PlacesBefore, 34 PlacesAfterwards, 86 TransitionsBefore, 31 TransitionsAfterwards, 1152 CoEnabledTransitionPairs, 4 FixpointIterations, 0 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 34 TrivialYvCompositions, 30 ConcurrentYvCompositions, 1 ChoiceCompositions, 70 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1763, independent: 1579, independent conditional: 1579, independent unconditional: 0, dependent: 184, dependent conditional: 184, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1763, independent: 1579, independent conditional: 0, independent unconditional: 1579, dependent: 184, dependent conditional: 0, dependent unconditional: 184, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1763, independent: 1579, independent conditional: 0, independent unconditional: 1579, dependent: 184, dependent conditional: 0, dependent unconditional: 184, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1763, independent: 1579, independent conditional: 0, independent unconditional: 1579, dependent: 184, dependent conditional: 0, dependent unconditional: 184, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 956, independent: 900, independent conditional: 0, independent unconditional: 900, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 956, independent: 848, independent conditional: 0, independent unconditional: 848, dependent: 108, dependent conditional: 0, dependent unconditional: 108, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 108, independent: 52, independent conditional: 0, independent unconditional: 52, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 264, independent: 113, independent conditional: 0, independent unconditional: 113, dependent: 151, dependent conditional: 0, dependent unconditional: 151, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1763, independent: 679, independent conditional: 0, independent unconditional: 679, dependent: 128, dependent conditional: 0, dependent unconditional: 128, unknown: 956, unknown conditional: 0, unknown unconditional: 956] , Statistics on independence cache: Total cache size (in pairs): 1667, Positive cache size: 1611, Positive conditional cache size: 0, Positive unconditional cache size: 1611, Negative cache size: 56, Negative conditional cache size: 0, Negative unconditional cache size: 56, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 119 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.7s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 204 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 204 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 576 IncrementalHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 8 mSDtfsCounter, 576 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=157occurred in iteration=5, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 311 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 15:01:12,577 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...