/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 18:47:34,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 18:47:34,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 18:47:34,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 18:47:34,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 18:47:34,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 18:47:34,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 18:47:34,384 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 18:47:34,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 18:47:34,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 18:47:34,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 18:47:34,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 18:47:34,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 18:47:34,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 18:47:34,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 18:47:34,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 18:47:34,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 18:47:34,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 18:47:34,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 18:47:34,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 18:47:34,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 18:47:34,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 18:47:34,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 18:47:34,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 18:47:34,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 18:47:34,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 18:47:34,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 18:47:34,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 18:47:34,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 18:47:34,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 18:47:34,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 18:47:34,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 18:47:34,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 18:47:34,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 18:47:34,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 18:47:34,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 18:47:34,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 18:47:34,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 18:47:34,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 18:47:34,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 18:47:34,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 18:47:34,428 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-05 18:47:34,454 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 18:47:34,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 18:47:34,456 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 18:47:34,456 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 18:47:34,456 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 18:47:34,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 18:47:34,457 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 18:47:34,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 18:47:34,457 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 18:47:34,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 18:47:34,458 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 18:47:34,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 18:47:34,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 18:47:34,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 18:47:34,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 18:47:34,458 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 18:47:34,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 18:47:34,458 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 18:47:34,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 18:47:34,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 18:47:34,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 18:47:34,459 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 18:47:34,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 18:47:34,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 18:47:34,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 18:47:34,459 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 18:47:34,459 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 18:47:34,459 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 18:47:34,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 18:47:34,460 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-05 18:47:34,460 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 18:47:34,460 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 18:47:34,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 18:47:34,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 18:47:34,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 18:47:34,852 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 18:47:34,852 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 18:47:34,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2022-12-05 18:47:36,209 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 18:47:36,463 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 18:47:36,464 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2022-12-05 18:47:36,476 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbd028879/9f7c90f3836143b8a0c353a5527ea3c7/FLAG03142a6fe [2022-12-05 18:47:36,491 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbd028879/9f7c90f3836143b8a0c353a5527ea3c7 [2022-12-05 18:47:36,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 18:47:36,495 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 18:47:36,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 18:47:36,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 18:47:36,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 18:47:36,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 06:47:36" (1/1) ... [2022-12-05 18:47:36,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c3c2f15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:47:36, skipping insertion in model container [2022-12-05 18:47:36,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 06:47:36" (1/1) ... [2022-12-05 18:47:36,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 18:47:36,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 18:47:36,685 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_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2022-12-05 18:47:36,835 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 18:47:36,847 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 18:47:36,858 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_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2022-12-05 18:47:36,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 18:47:36,922 INFO L208 MainTranslator]: Completed translation [2022-12-05 18:47:36,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:47:36 WrapperNode [2022-12-05 18:47:36,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 18:47:36,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 18:47:36,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 18:47:36,924 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 18:47:36,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:47:36" (1/1) ... [2022-12-05 18:47:36,948 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:47:36" (1/1) ... [2022-12-05 18:47:36,968 INFO L138 Inliner]: procedures = 165, calls = 35, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 118 [2022-12-05 18:47:36,969 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 18:47:36,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 18:47:36,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 18:47:36,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 18:47:36,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:47:36" (1/1) ... [2022-12-05 18:47:36,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:47:36" (1/1) ... [2022-12-05 18:47:36,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:47:36" (1/1) ... [2022-12-05 18:47:36,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:47:36" (1/1) ... [2022-12-05 18:47:37,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:47:36" (1/1) ... [2022-12-05 18:47:37,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:47:36" (1/1) ... [2022-12-05 18:47:37,009 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:47:36" (1/1) ... [2022-12-05 18:47:37,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:47:36" (1/1) ... [2022-12-05 18:47:37,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 18:47:37,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 18:47:37,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 18:47:37,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 18:47:37,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:47:36" (1/1) ... [2022-12-05 18:47:37,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 18:47:37,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:47:37,038 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-05 18:47:37,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-05 18:47:37,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 18:47:37,067 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2022-12-05 18:47:37,067 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2022-12-05 18:47:37,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 18:47:37,067 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-05 18:47:37,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 18:47:37,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 18:47:37,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 18:47:37,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 18:47:37,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 18:47:37,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 18:47:37,069 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 18:47:37,173 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 18:47:37,175 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 18:47:37,447 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 18:47:37,456 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 18:47:37,456 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-05 18:47:37,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 06:47:37 BoogieIcfgContainer [2022-12-05 18:47:37,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 18:47:37,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 18:47:37,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 18:47:37,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 18:47:37,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 06:47:36" (1/3) ... [2022-12-05 18:47:37,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b949110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 06:47:37, skipping insertion in model container [2022-12-05 18:47:37,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:47:36" (2/3) ... [2022-12-05 18:47:37,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b949110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 06:47:37, skipping insertion in model container [2022-12-05 18:47:37,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 06:47:37" (3/3) ... [2022-12-05 18:47:37,465 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2022-12-05 18:47:37,482 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 18:47:37,482 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-05 18:47:37,482 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 18:47:37,536 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-05 18:47:37,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 128 transitions, 261 flow [2022-12-05 18:47:37,633 INFO L130 PetriNetUnfolder]: 10/127 cut-off events. [2022-12-05 18:47:37,633 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 18:47:37,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 127 events. 10/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 216 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-12-05 18:47:37,638 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 128 transitions, 261 flow [2022-12-05 18:47:37,641 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 127 transitions, 257 flow [2022-12-05 18:47:37,648 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 18:47:37,661 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;@75446498, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 18:47:37,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-05 18:47:37,690 INFO L130 PetriNetUnfolder]: 3/93 cut-off events. [2022-12-05 18:47:37,690 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 18:47:37,690 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:47:37,691 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:47:37,691 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-05 18:47:37,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:47:37,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1337010943, now seen corresponding path program 1 times [2022-12-05 18:47:37,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:47:37,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36111241] [2022-12-05 18:47:37,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:47:37,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:47:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:47:37,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:47:37,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:47:37,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36111241] [2022-12-05 18:47:37,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36111241] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:47:37,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:47:37,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 18:47:37,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198575835] [2022-12-05 18:47:37,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:47:37,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-05 18:47:37,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:47:37,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-05 18:47:37,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-05 18:47:37,986 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 128 [2022-12-05 18:47:37,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 127 transitions, 257 flow. Second operand has 2 states, 2 states have (on average 120.0) internal successors, (240), 2 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:47:37,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:47:37,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 128 [2022-12-05 18:47:37,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:47:38,071 INFO L130 PetriNetUnfolder]: 5/117 cut-off events. [2022-12-05 18:47:38,071 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-05 18:47:38,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 117 events. 5/117 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 166 event pairs, 0 based on Foata normal form. 5/116 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2022-12-05 18:47:38,075 INFO L137 encePairwiseOnDemand]: 122/128 looper letters, 1 selfloop transitions, 0 changer transitions 0/117 dead transitions. [2022-12-05 18:47:38,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 117 transitions, 239 flow [2022-12-05 18:47:38,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-05 18:47:38,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-05 18:47:38,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 245 transitions. [2022-12-05 18:47:38,089 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.95703125 [2022-12-05 18:47:38,090 INFO L175 Difference]: Start difference. First operand has 121 places, 127 transitions, 257 flow. Second operand 2 states and 245 transitions. [2022-12-05 18:47:38,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 117 transitions, 239 flow [2022-12-05 18:47:38,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 117 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 18:47:38,100 INFO L231 Difference]: Finished difference. Result has 116 places, 117 transitions, 236 flow [2022-12-05 18:47:38,101 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=236, PETRI_PLACES=116, PETRI_TRANSITIONS=117} [2022-12-05 18:47:38,107 INFO L294 CegarLoopForPetriNet]: 121 programPoint places, -5 predicate places. [2022-12-05 18:47:38,107 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 117 transitions, 236 flow [2022-12-05 18:47:38,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 120.0) internal successors, (240), 2 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:47:38,108 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:47:38,108 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:47:38,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 18:47:38,109 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-05 18:47:38,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:47:38,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1367135201, now seen corresponding path program 1 times [2022-12-05 18:47:38,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:47:38,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914719017] [2022-12-05 18:47:38,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:47:38,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:47:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:47:38,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:47:38,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:47:38,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914719017] [2022-12-05 18:47:38,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914719017] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:47:38,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:47:38,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-05 18:47:38,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442137476] [2022-12-05 18:47:38,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:47:38,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 18:47:38,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:47:38,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 18:47:38,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-05 18:47:38,453 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 128 [2022-12-05 18:47:38,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 117 transitions, 236 flow. Second operand has 7 states, 7 states have (on average 83.14285714285714) internal successors, (582), 7 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:47:38,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:47:38,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 128 [2022-12-05 18:47:38,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:47:39,032 INFO L130 PetriNetUnfolder]: 313/1481 cut-off events. [2022-12-05 18:47:39,033 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 18:47:39,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2081 conditions, 1481 events. 313/1481 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11002 event pairs, 43 based on Foata normal form. 0/1378 useless extension candidates. Maximal degree in co-relation 2078. Up to 143 conditions per place. [2022-12-05 18:47:39,043 INFO L137 encePairwiseOnDemand]: 111/128 looper letters, 118 selfloop transitions, 46 changer transitions 0/241 dead transitions. [2022-12-05 18:47:39,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 241 transitions, 812 flow [2022-12-05 18:47:39,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-05 18:47:39,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-05 18:47:39,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1846 transitions. [2022-12-05 18:47:39,050 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6867559523809523 [2022-12-05 18:47:39,050 INFO L175 Difference]: Start difference. First operand has 116 places, 117 transitions, 236 flow. Second operand 21 states and 1846 transitions. [2022-12-05 18:47:39,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 241 transitions, 812 flow [2022-12-05 18:47:39,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 241 transitions, 812 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-05 18:47:39,057 INFO L231 Difference]: Finished difference. Result has 150 places, 170 transitions, 578 flow [2022-12-05 18:47:39,057 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=578, PETRI_PLACES=150, PETRI_TRANSITIONS=170} [2022-12-05 18:47:39,058 INFO L294 CegarLoopForPetriNet]: 121 programPoint places, 29 predicate places. [2022-12-05 18:47:39,058 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 170 transitions, 578 flow [2022-12-05 18:47:39,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.14285714285714) internal successors, (582), 7 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:47:39,059 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:47:39,059 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:47:39,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 18:47:39,059 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-05 18:47:39,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:47:39,060 INFO L85 PathProgramCache]: Analyzing trace with hash -180137502, now seen corresponding path program 1 times [2022-12-05 18:47:39,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:47:39,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767334570] [2022-12-05 18:47:39,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:47:39,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:47:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:47:39,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:47:39,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:47:39,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767334570] [2022-12-05 18:47:39,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767334570] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:47:39,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:47:39,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-05 18:47:39,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774100976] [2022-12-05 18:47:39,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:47:39,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-05 18:47:39,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:47:39,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-05 18:47:39,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-12-05 18:47:39,519 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 128 [2022-12-05 18:47:39,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 170 transitions, 578 flow. Second operand has 15 states, 15 states have (on average 70.2) internal successors, (1053), 15 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:47:39,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:47:39,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 128 [2022-12-05 18:47:39,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:47:41,220 INFO L130 PetriNetUnfolder]: 926/3392 cut-off events. [2022-12-05 18:47:41,221 INFO L131 PetriNetUnfolder]: For 951/951 co-relation queries the response was YES. [2022-12-05 18:47:41,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6330 conditions, 3392 events. 926/3392 cut-off events. For 951/951 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 29327 event pairs, 148 based on Foata normal form. 12/3176 useless extension candidates. Maximal degree in co-relation 6313. Up to 603 conditions per place. [2022-12-05 18:47:41,244 INFO L137 encePairwiseOnDemand]: 106/128 looper letters, 264 selfloop transitions, 112 changer transitions 0/452 dead transitions. [2022-12-05 18:47:41,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 452 transitions, 2356 flow [2022-12-05 18:47:41,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-05 18:47:41,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-12-05 18:47:41,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2947 transitions. [2022-12-05 18:47:41,268 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5903445512820513 [2022-12-05 18:47:41,268 INFO L175 Difference]: Start difference. First operand has 150 places, 170 transitions, 578 flow. Second operand 39 states and 2947 transitions. [2022-12-05 18:47:41,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 452 transitions, 2356 flow [2022-12-05 18:47:41,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 452 transitions, 2356 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-05 18:47:41,285 INFO L231 Difference]: Finished difference. Result has 212 places, 277 transitions, 1502 flow [2022-12-05 18:47:41,285 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=1502, PETRI_PLACES=212, PETRI_TRANSITIONS=277} [2022-12-05 18:47:41,286 INFO L294 CegarLoopForPetriNet]: 121 programPoint places, 91 predicate places. [2022-12-05 18:47:41,286 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 277 transitions, 1502 flow [2022-12-05 18:47:41,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 70.2) internal successors, (1053), 15 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:47:41,286 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:47:41,287 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:47:41,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 18:47:41,287 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-05 18:47:41,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:47:41,287 INFO L85 PathProgramCache]: Analyzing trace with hash 222459273, now seen corresponding path program 1 times [2022-12-05 18:47:41,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:47:41,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836152636] [2022-12-05 18:47:41,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:47:41,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:47:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:47:41,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:47:41,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:47:41,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836152636] [2022-12-05 18:47:41,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836152636] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:47:41,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:47:41,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-05 18:47:41,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258402204] [2022-12-05 18:47:41,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:47:41,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-05 18:47:41,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:47:41,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-05 18:47:41,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-12-05 18:47:41,673 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 128 [2022-12-05 18:47:41,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 277 transitions, 1502 flow. Second operand has 15 states, 15 states have (on average 66.4) internal successors, (996), 15 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:47:41,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:47:41,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 128 [2022-12-05 18:47:41,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:47:46,686 INFO L130 PetriNetUnfolder]: 4534/11656 cut-off events. [2022-12-05 18:47:46,686 INFO L131 PetriNetUnfolder]: For 15895/15994 co-relation queries the response was YES. [2022-12-05 18:47:46,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30797 conditions, 11656 events. 4534/11656 cut-off events. For 15895/15994 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 99696 event pairs, 156 based on Foata normal form. 34/11138 useless extension candidates. Maximal degree in co-relation 30755. Up to 2304 conditions per place. [2022-12-05 18:47:46,783 INFO L137 encePairwiseOnDemand]: 99/128 looper letters, 885 selfloop transitions, 596 changer transitions 0/1563 dead transitions. [2022-12-05 18:47:46,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 1563 transitions, 11824 flow [2022-12-05 18:47:46,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-12-05 18:47:46,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2022-12-05 18:47:46,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 8123 transitions. [2022-12-05 18:47:46,799 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5666155133928571 [2022-12-05 18:47:46,799 INFO L175 Difference]: Start difference. First operand has 212 places, 277 transitions, 1502 flow. Second operand 112 states and 8123 transitions. [2022-12-05 18:47:46,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 1563 transitions, 11824 flow [2022-12-05 18:47:46,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 1563 transitions, 11753 flow, removed 32 selfloop flow, removed 4 redundant places. [2022-12-05 18:47:46,936 INFO L231 Difference]: Finished difference. Result has 389 places, 894 transitions, 7574 flow [2022-12-05 18:47:46,937 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=112, PETRI_FLOW=7574, PETRI_PLACES=389, PETRI_TRANSITIONS=894} [2022-12-05 18:47:46,938 INFO L294 CegarLoopForPetriNet]: 121 programPoint places, 268 predicate places. [2022-12-05 18:47:46,939 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 894 transitions, 7574 flow [2022-12-05 18:47:46,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 66.4) internal successors, (996), 15 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:47:46,939 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:47:46,940 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:47:46,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 18:47:46,940 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-05 18:47:46,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:47:46,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1102329353, now seen corresponding path program 2 times [2022-12-05 18:47:46,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:47:46,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952984288] [2022-12-05 18:47:46,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:47:46,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:47:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:47:47,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:47:47,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:47:47,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952984288] [2022-12-05 18:47:47,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952984288] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:47:47,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:47:47,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-05 18:47:47,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601008763] [2022-12-05 18:47:47,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:47:47,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-05 18:47:47,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:47:47,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-05 18:47:47,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-12-05 18:47:47,385 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 128 [2022-12-05 18:47:47,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 894 transitions, 7574 flow. Second operand has 15 states, 15 states have (on average 66.4) internal successors, (996), 15 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:47:47,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:47:47,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 128 [2022-12-05 18:47:47,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:47:55,983 INFO L130 PetriNetUnfolder]: 6741/17515 cut-off events. [2022-12-05 18:47:55,984 INFO L131 PetriNetUnfolder]: For 109349/109557 co-relation queries the response was YES. [2022-12-05 18:47:56,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66863 conditions, 17515 events. 6741/17515 cut-off events. For 109349/109557 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 161366 event pairs, 502 based on Foata normal form. 79/16759 useless extension candidates. Maximal degree in co-relation 66752. Up to 2610 conditions per place. [2022-12-05 18:47:56,189 INFO L137 encePairwiseOnDemand]: 99/128 looper letters, 1382 selfloop transitions, 844 changer transitions 0/2308 dead transitions. [2022-12-05 18:47:56,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 2308 transitions, 22001 flow [2022-12-05 18:47:56,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-12-05 18:47:56,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2022-12-05 18:47:56,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 7232 transitions. [2022-12-05 18:47:56,199 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5707070707070707 [2022-12-05 18:47:56,199 INFO L175 Difference]: Start difference. First operand has 389 places, 894 transitions, 7574 flow. Second operand 99 states and 7232 transitions. [2022-12-05 18:47:56,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 2308 transitions, 22001 flow [2022-12-05 18:47:56,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 2308 transitions, 20995 flow, removed 503 selfloop flow, removed 0 redundant places. [2022-12-05 18:47:56,944 INFO L231 Difference]: Finished difference. Result has 567 places, 1407 transitions, 14801 flow [2022-12-05 18:47:56,946 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=6876, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=894, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=367, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=14801, PETRI_PLACES=567, PETRI_TRANSITIONS=1407} [2022-12-05 18:47:56,946 INFO L294 CegarLoopForPetriNet]: 121 programPoint places, 446 predicate places. [2022-12-05 18:47:56,946 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 1407 transitions, 14801 flow [2022-12-05 18:47:56,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 66.4) internal successors, (996), 15 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:47:56,947 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:47:56,947 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:47:56,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 18:47:56,947 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-05 18:47:56,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:47:56,948 INFO L85 PathProgramCache]: Analyzing trace with hash 7423465, now seen corresponding path program 3 times [2022-12-05 18:47:56,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:47:56,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764369193] [2022-12-05 18:47:56,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:47:56,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:47:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:47:57,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:47:57,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:47:57,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764369193] [2022-12-05 18:47:57,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764369193] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:47:57,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:47:57,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-05 18:47:57,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139526900] [2022-12-05 18:47:57,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:47:57,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-05 18:47:57,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:47:57,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-05 18:47:57,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-12-05 18:47:57,315 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 128 [2022-12-05 18:47:57,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 1407 transitions, 14801 flow. Second operand has 15 states, 15 states have (on average 66.4) internal successors, (996), 15 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:47:57,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:47:57,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 128 [2022-12-05 18:47:57,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:48:15,859 INFO L130 PetriNetUnfolder]: 11524/30568 cut-off events. [2022-12-05 18:48:15,859 INFO L131 PetriNetUnfolder]: For 485948/486609 co-relation queries the response was YES. [2022-12-05 18:48:16,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162033 conditions, 30568 events. 11524/30568 cut-off events. For 485948/486609 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 312345 event pairs, 697 based on Foata normal form. 89/29260 useless extension candidates. Maximal degree in co-relation 161842. Up to 5839 conditions per place. [2022-12-05 18:48:16,867 INFO L137 encePairwiseOnDemand]: 100/128 looper letters, 2149 selfloop transitions, 1451 changer transitions 0/3682 dead transitions. [2022-12-05 18:48:16,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 671 places, 3682 transitions, 51261 flow [2022-12-05 18:48:16,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-12-05 18:48:16,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2022-12-05 18:48:16,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 7724 transitions. [2022-12-05 18:48:16,877 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5747023809523809 [2022-12-05 18:48:16,877 INFO L175 Difference]: Start difference. First operand has 567 places, 1407 transitions, 14801 flow. Second operand 105 states and 7724 transitions. [2022-12-05 18:48:16,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 671 places, 3682 transitions, 51261 flow [2022-12-05 18:48:21,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 3682 transitions, 48624 flow, removed 1194 selfloop flow, removed 5 redundant places. [2022-12-05 18:48:21,668 INFO L231 Difference]: Finished difference. Result has 749 places, 2439 transitions, 35014 flow [2022-12-05 18:48:21,669 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=13794, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=585, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=658, PETRI_DIFFERENCE_SUBTRAHEND_STATES=105, PETRI_FLOW=35014, PETRI_PLACES=749, PETRI_TRANSITIONS=2439} [2022-12-05 18:48:21,672 INFO L294 CegarLoopForPetriNet]: 121 programPoint places, 628 predicate places. [2022-12-05 18:48:21,676 INFO L495 AbstractCegarLoop]: Abstraction has has 749 places, 2439 transitions, 35014 flow [2022-12-05 18:48:21,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 66.4) internal successors, (996), 15 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:48:21,677 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:48:21,677 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:48:21,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 18:48:21,677 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-05 18:48:21,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:48:21,678 INFO L85 PathProgramCache]: Analyzing trace with hash -36019037, now seen corresponding path program 4 times [2022-12-05 18:48:21,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:48:21,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8324694] [2022-12-05 18:48:21,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:48:21,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:48:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:48:22,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:48:22,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:48:22,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8324694] [2022-12-05 18:48:22,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8324694] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:48:22,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:48:22,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-05 18:48:22,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760453469] [2022-12-05 18:48:22,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:48:22,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-05 18:48:22,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:48:22,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-05 18:48:22,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-12-05 18:48:22,111 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 128 [2022-12-05 18:48:22,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 749 places, 2439 transitions, 35014 flow. Second operand has 15 states, 15 states have (on average 66.4) internal successors, (996), 15 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:48:22,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:48:22,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 128 [2022-12-05 18:48:22,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:49:06,849 INFO L130 PetriNetUnfolder]: 20812/55280 cut-off events. [2022-12-05 18:49:06,849 INFO L131 PetriNetUnfolder]: For 1308658/1310117 co-relation queries the response was YES. [2022-12-05 18:49:11,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334370 conditions, 55280 events. 20812/55280 cut-off events. For 1308658/1310117 co-relation queries the response was YES. Maximal size of possible extension queue 948. Compared 614445 event pairs, 1759 based on Foata normal form. 233/52880 useless extension candidates. Maximal degree in co-relation 334095. Up to 7772 conditions per place. [2022-12-05 18:49:11,678 INFO L137 encePairwiseOnDemand]: 99/128 looper letters, 3320 selfloop transitions, 2247 changer transitions 0/5649 dead transitions. [2022-12-05 18:49:11,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 825 places, 5649 transitions, 94348 flow [2022-12-05 18:49:11,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-12-05 18:49:11,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2022-12-05 18:49:11,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 5782 transitions. [2022-12-05 18:49:11,703 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5866477272727273 [2022-12-05 18:49:11,703 INFO L175 Difference]: Start difference. First operand has 749 places, 2439 transitions, 35014 flow. Second operand 77 states and 5782 transitions. [2022-12-05 18:49:11,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 825 places, 5649 transitions, 94348 flow [2022-12-05 18:49:36,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 825 places, 5649 transitions, 85352 flow, removed 4498 selfloop flow, removed 0 redundant places. [2022-12-05 18:49:36,928 INFO L231 Difference]: Finished difference. Result has 892 places, 4057 transitions, 64520 flow [2022-12-05 18:49:36,930 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=30388, PETRI_DIFFERENCE_MINUEND_PLACES=749, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=863, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1069, PETRI_DIFFERENCE_SUBTRAHEND_STATES=77, PETRI_FLOW=64520, PETRI_PLACES=892, PETRI_TRANSITIONS=4057} [2022-12-05 18:49:36,932 INFO L294 CegarLoopForPetriNet]: 121 programPoint places, 771 predicate places. [2022-12-05 18:49:36,932 INFO L495 AbstractCegarLoop]: Abstraction has has 892 places, 4057 transitions, 64520 flow [2022-12-05 18:49:36,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 66.4) internal successors, (996), 15 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:49:36,932 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:49:36,932 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:49:36,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-05 18:49:36,933 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-05 18:49:36,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:49:36,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1818995049, now seen corresponding path program 5 times [2022-12-05 18:49:36,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:49:36,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050973486] [2022-12-05 18:49:36,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:49:36,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:49:36,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:49:37,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:49:37,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:49:37,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050973486] [2022-12-05 18:49:37,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050973486] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:49:37,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:49:37,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-05 18:49:37,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379506226] [2022-12-05 18:49:37,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:49:37,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-05 18:49:37,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:49:37,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-05 18:49:37,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-12-05 18:49:37,201 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 128 [2022-12-05 18:49:37,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 892 places, 4057 transitions, 64520 flow. Second operand has 15 states, 15 states have (on average 66.4) internal successors, (996), 15 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:49:37,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:49:37,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 128 [2022-12-05 18:49:37,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand