/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/weaver/popl20-bad-dot-product.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-0612a5f-m [2022-09-20 21:05:59,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 21:05:59,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 21:05:59,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 21:05:59,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 21:05:59,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 21:05:59,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 21:05:59,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 21:05:59,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 21:05:59,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 21:05:59,087 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 21:05:59,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 21:05:59,088 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 21:05:59,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 21:05:59,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 21:05:59,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 21:05:59,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 21:05:59,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 21:05:59,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 21:05:59,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 21:05:59,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 21:05:59,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 21:05:59,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 21:05:59,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 21:05:59,106 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 21:05:59,106 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 21:05:59,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 21:05:59,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 21:05:59,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 21:05:59,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 21:05:59,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 21:05:59,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 21:05:59,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 21:05:59,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 21:05:59,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 21:05:59,111 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 21:05:59,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 21:05:59,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 21:05:59,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 21:05:59,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 21:05:59,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 21:05:59,113 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 [2022-09-20 21:05:59,143 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 21:05:59,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 21:05:59,144 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 21:05:59,144 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 21:05:59,145 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 21:05:59,145 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 21:05:59,145 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 21:05:59,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 21:05:59,145 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 21:05:59,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 21:05:59,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 21:05:59,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 21:05:59,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 21:05:59,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 21:05:59,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 21:05:59,146 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 21:05:59,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 21:05:59,146 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 21:05:59,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 21:05:59,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 21:05:59,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 21:05:59,147 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 21:05:59,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 21:05:59,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 21:05:59,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 21:05:59,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 21:05:59,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 21:05:59,147 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 21:05:59,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 21:05:59,148 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 21:05:59,148 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 21:05:59,148 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 21:05:59,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 21:05:59,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 21:05:59,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 21:05:59,339 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 21:05:59,339 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 21:05:59,340 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-dot-product.wvr.c [2022-09-20 21:05:59,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/092f14546/c842a8b09ace45f5af20926b8dfb3fa9/FLAG39633bd88 [2022-09-20 21:05:59,737 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 21:05:59,737 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-dot-product.wvr.c [2022-09-20 21:05:59,748 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/092f14546/c842a8b09ace45f5af20926b8dfb3fa9/FLAG39633bd88 [2022-09-20 21:05:59,756 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/092f14546/c842a8b09ace45f5af20926b8dfb3fa9 [2022-09-20 21:05:59,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 21:05:59,758 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 21:05:59,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 21:05:59,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 21:05:59,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 21:05:59,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 09:05:59" (1/1) ... [2022-09-20 21:05:59,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5914e374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:05:59, skipping insertion in model container [2022-09-20 21:05:59,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 09:05:59" (1/1) ... [2022-09-20 21:05:59,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 21:05:59,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 21:05:59,911 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-dot-product.wvr.c[2865,2878] [2022-09-20 21:05:59,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 21:05:59,922 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 21:05:59,939 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-dot-product.wvr.c[2865,2878] [2022-09-20 21:05:59,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 21:05:59,953 INFO L208 MainTranslator]: Completed translation [2022-09-20 21:05:59,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:05:59 WrapperNode [2022-09-20 21:05:59,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 21:05:59,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 21:05:59,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 21:05:59,955 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 21:05:59,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:05:59" (1/1) ... [2022-09-20 21:05:59,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:05:59" (1/1) ... [2022-09-20 21:05:59,988 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 16, calls inlined = 22, statements flattened = 275 [2022-09-20 21:05:59,988 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 21:05:59,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 21:05:59,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 21:05:59,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 21:05:59,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:05:59" (1/1) ... [2022-09-20 21:05:59,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:05:59" (1/1) ... [2022-09-20 21:05:59,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:05:59" (1/1) ... [2022-09-20 21:05:59,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:05:59" (1/1) ... [2022-09-20 21:06:00,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:05:59" (1/1) ... [2022-09-20 21:06:00,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:05:59" (1/1) ... [2022-09-20 21:06:00,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:05:59" (1/1) ... [2022-09-20 21:06:00,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 21:06:00,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 21:06:00,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 21:06:00,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 21:06:00,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:05:59" (1/1) ... [2022-09-20 21:06:00,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 21:06:00,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:06:00,057 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) [2022-09-20 21:06:00,059 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 [2022-09-20 21:06:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 21:06:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 21:06:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 21:06:00,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 21:06:00,092 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 21:06:00,092 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 21:06:00,092 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 21:06:00,092 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 21:06:00,092 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-20 21:06:00,093 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-20 21:06:00,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 21:06:00,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-20 21:06:00,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-20 21:06:00,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-20 21:06:00,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 21:06:00,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 21:06:00,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 21:06:00,098 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 21:06:00,179 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 21:06:00,180 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 21:06:00,457 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 21:06:00,530 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 21:06:00,530 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-09-20 21:06:00,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 09:06:00 BoogieIcfgContainer [2022-09-20 21:06:00,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 21:06:00,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 21:06:00,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 21:06:00,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 21:06:00,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 09:05:59" (1/3) ... [2022-09-20 21:06:00,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17da22ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 09:06:00, skipping insertion in model container [2022-09-20 21:06:00,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:05:59" (2/3) ... [2022-09-20 21:06:00,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17da22ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 09:06:00, skipping insertion in model container [2022-09-20 21:06:00,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 09:06:00" (3/3) ... [2022-09-20 21:06:00,538 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product.wvr.c [2022-09-20 21:06:00,548 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 21:06:00,549 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 21:06:00,549 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 21:06:00,597 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-20 21:06:00,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 257 transitions, 538 flow [2022-09-20 21:06:00,710 INFO L130 PetriNetUnfolder]: 25/254 cut-off events. [2022-09-20 21:06:00,710 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 21:06:00,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 254 events. 25/254 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 326 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 196. Up to 2 conditions per place. [2022-09-20 21:06:00,716 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 257 transitions, 538 flow [2022-09-20 21:06:00,726 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 243 transitions, 504 flow [2022-09-20 21:06:00,733 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 21:06:00,737 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;@da1d0af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 21:06:00,737 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-09-20 21:06:00,786 INFO L130 PetriNetUnfolder]: 25/242 cut-off events. [2022-09-20 21:06:00,786 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 21:06:00,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:06:00,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:06:00,788 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:06:00,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:06:00,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1660731997, now seen corresponding path program 1 times [2022-09-20 21:06:00,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:06:00,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737107696] [2022-09-20 21:06:00,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:06:00,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:06:00,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:06:01,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:06:01,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:06:01,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737107696] [2022-09-20 21:06:01,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737107696] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:06:01,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:06:01,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 21:06:01,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69848206] [2022-09-20 21:06:01,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:06:01,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-20 21:06:01,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:06:01,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-20 21:06:01,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-20 21:06:01,052 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 257 [2022-09-20 21:06:01,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 243 transitions, 504 flow. Second operand has 2 states, 2 states have (on average 234.5) internal successors, (469), 2 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:01,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:06:01,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 257 [2022-09-20 21:06:01,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:06:01,114 INFO L130 PetriNetUnfolder]: 31/379 cut-off events. [2022-09-20 21:06:01,114 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-09-20 21:06:01,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 379 events. 31/379 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1242 event pairs, 15 based on Foata normal form. 64/407 useless extension candidates. Maximal degree in co-relation 267. Up to 37 conditions per place. [2022-09-20 21:06:01,123 INFO L137 encePairwiseOnDemand]: 240/257 looper letters, 9 selfloop transitions, 0 changer transitions 6/226 dead transitions. [2022-09-20 21:06:01,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 226 transitions, 488 flow [2022-09-20 21:06:01,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-20 21:06:01,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-09-20 21:06:01,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 486 transitions. [2022-09-20 21:06:01,137 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9455252918287937 [2022-09-20 21:06:01,138 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 486 transitions. [2022-09-20 21:06:01,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 486 transitions. [2022-09-20 21:06:01,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:06:01,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 486 transitions. [2022-09-20 21:06:01,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 243.0) internal successors, (486), 2 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:01,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:01,154 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:01,155 INFO L175 Difference]: Start difference. First operand has 228 places, 243 transitions, 504 flow. Second operand 2 states and 486 transitions. [2022-09-20 21:06:01,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 226 transitions, 488 flow [2022-09-20 21:06:01,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 226 transitions, 476 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-20 21:06:01,162 INFO L231 Difference]: Finished difference. Result has 223 places, 220 transitions, 446 flow [2022-09-20 21:06:01,164 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=446, PETRI_PLACES=223, PETRI_TRANSITIONS=220} [2022-09-20 21:06:01,167 INFO L287 CegarLoopForPetriNet]: 228 programPoint places, -5 predicate places. [2022-09-20 21:06:01,167 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 220 transitions, 446 flow [2022-09-20 21:06:01,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 234.5) internal successors, (469), 2 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:01,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:06:01,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:06:01,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 21:06:01,168 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:06:01,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:06:01,170 INFO L85 PathProgramCache]: Analyzing trace with hash 875664324, now seen corresponding path program 1 times [2022-09-20 21:06:01,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:06:01,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36794338] [2022-09-20 21:06:01,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:06:01,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:06:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:06:01,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:06:01,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:06:01,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36794338] [2022-09-20 21:06:01,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36794338] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:06:01,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:06:01,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 21:06:01,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386066820] [2022-09-20 21:06:01,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:06:01,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 21:06:01,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:06:01,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 21:06:01,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-20 21:06:01,457 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 257 [2022-09-20 21:06:01,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 220 transitions, 446 flow. Second operand has 8 states, 8 states have (on average 175.25) internal successors, (1402), 8 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:01,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:06:01,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 257 [2022-09-20 21:06:01,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:06:01,786 INFO L130 PetriNetUnfolder]: 324/1335 cut-off events. [2022-09-20 21:06:01,787 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-09-20 21:06:01,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1824 conditions, 1335 events. 324/1335 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 8363 event pairs, 167 based on Foata normal form. 1/1076 useless extension candidates. Maximal degree in co-relation 1821. Up to 418 conditions per place. [2022-09-20 21:06:01,798 INFO L137 encePairwiseOnDemand]: 245/257 looper letters, 60 selfloop transitions, 8 changer transitions 22/246 dead transitions. [2022-09-20 21:06:01,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 246 transitions, 678 flow [2022-09-20 21:06:01,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 21:06:01,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 21:06:01,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1950 transitions. [2022-09-20 21:06:01,802 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6897771489211177 [2022-09-20 21:06:01,802 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1950 transitions. [2022-09-20 21:06:01,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1950 transitions. [2022-09-20 21:06:01,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:06:01,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1950 transitions. [2022-09-20 21:06:01,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 177.27272727272728) internal successors, (1950), 11 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:01,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 257.0) internal successors, (3084), 12 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:01,812 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 257.0) internal successors, (3084), 12 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:01,813 INFO L175 Difference]: Start difference. First operand has 223 places, 220 transitions, 446 flow. Second operand 11 states and 1950 transitions. [2022-09-20 21:06:01,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 246 transitions, 678 flow [2022-09-20 21:06:01,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 246 transitions, 678 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 21:06:01,820 INFO L231 Difference]: Finished difference. Result has 231 places, 221 transitions, 478 flow [2022-09-20 21:06:01,820 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=478, PETRI_PLACES=231, PETRI_TRANSITIONS=221} [2022-09-20 21:06:01,821 INFO L287 CegarLoopForPetriNet]: 228 programPoint places, 3 predicate places. [2022-09-20 21:06:01,821 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 221 transitions, 478 flow [2022-09-20 21:06:01,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 175.25) internal successors, (1402), 8 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:01,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:06:01,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:06:01,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 21:06:01,822 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:06:01,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:06:01,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1710373671, now seen corresponding path program 1 times [2022-09-20 21:06:01,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:06:01,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373525567] [2022-09-20 21:06:01,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:06:01,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:06:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:06:01,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:06:01,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:06:01,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373525567] [2022-09-20 21:06:01,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373525567] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:06:01,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700741104] [2022-09-20 21:06:01,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:06:01,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:06:01,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:06:01,965 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 21:06:01,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-20 21:06:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:06:02,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-20 21:06:02,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:06:02,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:06:02,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:06:02,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:06:02,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700741104] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 21:06:02,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 21:06:02,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-09-20 21:06:02,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319714022] [2022-09-20 21:06:02,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:06:02,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 21:06:02,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:06:02,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 21:06:02,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-09-20 21:06:02,447 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 257 [2022-09-20 21:06:02,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 221 transitions, 478 flow. Second operand has 7 states, 7 states have (on average 198.57142857142858) internal successors, (1390), 7 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:02,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:06:02,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 257 [2022-09-20 21:06:02,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:06:02,612 INFO L130 PetriNetUnfolder]: 166/758 cut-off events. [2022-09-20 21:06:02,612 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-09-20 21:06:02,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1094 conditions, 758 events. 166/758 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4177 event pairs, 45 based on Foata normal form. 0/662 useless extension candidates. Maximal degree in co-relation 1086. Up to 161 conditions per place. [2022-09-20 21:06:02,617 INFO L137 encePairwiseOnDemand]: 249/257 looper letters, 47 selfloop transitions, 7 changer transitions 0/229 dead transitions. [2022-09-20 21:06:02,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 229 transitions, 604 flow [2022-09-20 21:06:02,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 21:06:02,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 21:06:02,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1412 transitions. [2022-09-20 21:06:02,619 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7848804891606448 [2022-09-20 21:06:02,619 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1412 transitions. [2022-09-20 21:06:02,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1412 transitions. [2022-09-20 21:06:02,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:06:02,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1412 transitions. [2022-09-20 21:06:02,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 201.71428571428572) internal successors, (1412), 7 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:02,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 257.0) internal successors, (2056), 8 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:02,625 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 257.0) internal successors, (2056), 8 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:02,625 INFO L175 Difference]: Start difference. First operand has 231 places, 221 transitions, 478 flow. Second operand 7 states and 1412 transitions. [2022-09-20 21:06:02,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 229 transitions, 604 flow [2022-09-20 21:06:02,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 229 transitions, 582 flow, removed 3 selfloop flow, removed 8 redundant places. [2022-09-20 21:06:02,630 INFO L231 Difference]: Finished difference. Result has 228 places, 223 transitions, 489 flow [2022-09-20 21:06:02,630 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=489, PETRI_PLACES=228, PETRI_TRANSITIONS=223} [2022-09-20 21:06:02,631 INFO L287 CegarLoopForPetriNet]: 228 programPoint places, 0 predicate places. [2022-09-20 21:06:02,632 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 223 transitions, 489 flow [2022-09-20 21:06:02,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 198.57142857142858) internal successors, (1390), 7 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:02,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:06:02,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:06:02,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-20 21:06:02,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:06:02,848 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:06:02,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:06:02,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1770742449, now seen corresponding path program 1 times [2022-09-20 21:06:02,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:06:02,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465117778] [2022-09-20 21:06:02,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:06:02,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:06:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:06:02,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:06:02,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:06:02,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465117778] [2022-09-20 21:06:02,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465117778] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:06:02,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434469039] [2022-09-20 21:06:02,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:06:02,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:06:02,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:06:02,992 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 21:06:02,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-20 21:06:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:06:03,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-20 21:06:03,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:06:03,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:06:03,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:06:03,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:06:03,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434469039] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 21:06:03,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 21:06:03,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2022-09-20 21:06:03,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629290426] [2022-09-20 21:06:03,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:06:03,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 21:06:03,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:06:03,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 21:06:03,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-09-20 21:06:03,378 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 257 [2022-09-20 21:06:03,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 223 transitions, 489 flow. Second operand has 9 states, 9 states have (on average 189.11111111111111) internal successors, (1702), 9 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:03,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:06:03,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 257 [2022-09-20 21:06:03,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:06:03,803 INFO L130 PetriNetUnfolder]: 1013/2871 cut-off events. [2022-09-20 21:06:03,804 INFO L131 PetriNetUnfolder]: For 620/880 co-relation queries the response was YES. [2022-09-20 21:06:03,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4820 conditions, 2871 events. 1013/2871 cut-off events. For 620/880 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 22408 event pairs, 119 based on Foata normal form. 260/2733 useless extension candidates. Maximal degree in co-relation 4812. Up to 475 conditions per place. [2022-09-20 21:06:03,825 INFO L137 encePairwiseOnDemand]: 245/257 looper letters, 96 selfloop transitions, 19 changer transitions 0/281 dead transitions. [2022-09-20 21:06:03,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 281 transitions, 884 flow [2022-09-20 21:06:03,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 21:06:03,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 21:06:03,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2144 transitions. [2022-09-20 21:06:03,830 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.758401131941988 [2022-09-20 21:06:03,830 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2144 transitions. [2022-09-20 21:06:03,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2144 transitions. [2022-09-20 21:06:03,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:06:03,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2144 transitions. [2022-09-20 21:06:03,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 194.9090909090909) internal successors, (2144), 11 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:03,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 257.0) internal successors, (3084), 12 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:03,837 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 257.0) internal successors, (3084), 12 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:03,837 INFO L175 Difference]: Start difference. First operand has 228 places, 223 transitions, 489 flow. Second operand 11 states and 2144 transitions. [2022-09-20 21:06:03,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 281 transitions, 884 flow [2022-09-20 21:06:03,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 281 transitions, 871 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 21:06:03,842 INFO L231 Difference]: Finished difference. Result has 240 places, 235 transitions, 588 flow [2022-09-20 21:06:03,842 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=588, PETRI_PLACES=240, PETRI_TRANSITIONS=235} [2022-09-20 21:06:03,843 INFO L287 CegarLoopForPetriNet]: 228 programPoint places, 12 predicate places. [2022-09-20 21:06:03,843 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 235 transitions, 588 flow [2022-09-20 21:06:03,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 189.11111111111111) internal successors, (1702), 9 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:03,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:06:03,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:06:03,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-20 21:06:04,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-09-20 21:06:04,062 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:06:04,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:06:04,062 INFO L85 PathProgramCache]: Analyzing trace with hash -977379775, now seen corresponding path program 2 times [2022-09-20 21:06:04,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:06:04,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86448908] [2022-09-20 21:06:04,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:06:04,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:06:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:06:04,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:06:04,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:06:04,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86448908] [2022-09-20 21:06:04,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86448908] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:06:04,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778857470] [2022-09-20 21:06:04,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-20 21:06:04,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:06:04,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:06:04,174 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 21:06:04,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-20 21:06:04,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-20 21:06:04,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 21:06:04,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 9 conjunts are in the unsatisfiable core [2022-09-20 21:06:04,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:06:04,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:06:04,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-20 21:06:04,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778857470] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:06:04,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-20 21:06:04,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-09-20 21:06:04,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678808681] [2022-09-20 21:06:04,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:06:04,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 21:06:04,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:06:04,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 21:06:04,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-09-20 21:06:04,597 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 257 [2022-09-20 21:06:04,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 235 transitions, 588 flow. Second operand has 6 states, 6 states have (on average 203.33333333333334) internal successors, (1220), 6 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:04,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:06:04,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 257 [2022-09-20 21:06:04,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:06:04,748 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([902] L75-3-->L75-4: Formula: (= (+ |v_thread3Thread1of1ForFork1_#t~post13#1_3| 1) |v_thread3Thread1of1ForFork1_~i~2#1_13|) InVars {thread3Thread1of1ForFork1_#t~post13#1=|v_thread3Thread1of1ForFork1_#t~post13#1_3|} OutVars{thread3Thread1of1ForFork1_~i~2#1=|v_thread3Thread1of1ForFork1_~i~2#1_13|, thread3Thread1of1ForFork1_#t~post13#1=|v_thread3Thread1of1ForFork1_#t~post13#1_3|} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_~i~2#1][221], [Black: 2138#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), Black: 1150#(and (< |thread1Thread1of1ForFork2_~i~0#1| ~N~0) (<= 1 ~N~0)), Black: 2140#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0) (<= 1 ~M~0)), Black: 1148#(and (or (< |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (<= 1 ~N~0)) (or (not (< |ULTIMATE.start_create_fresh_int_array_~i~3#1| |ULTIMATE.start_create_fresh_int_array_~size#1|)) (<= 1 ~N~0)) (or (<= 1 ~N~0) (< |ULTIMATE.start_create_fresh_int_array_#in~size#1| 1))), Black: 2132#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), 18#L62-4true, 2191#(= ~res1~0 0), 1161#(<= 1 ~N~0), Black: 259#(and (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 0) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_~size#1|)), 5#L101-4true, 171#L75-4true, 180#thread1ENTRYtrue, 245#true, 279#(<= 1 ~N~0), Black: 2134#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (<= 1 ~N~0)), Black: 2136#(and (<= 1 ~N~0) (<= 1 ~M~0))]) [2022-09-20 21:06:04,748 INFO L383 tUnfolder$Statistics]: this new event has 169 ancestors and is cut-off event [2022-09-20 21:06:04,748 INFO L386 tUnfolder$Statistics]: existing Event has 160 ancestors and is cut-off event [2022-09-20 21:06:04,748 INFO L386 tUnfolder$Statistics]: existing Event has 153 ancestors and is cut-off event [2022-09-20 21:06:04,748 INFO L386 tUnfolder$Statistics]: existing Event has 153 ancestors and is cut-off event [2022-09-20 21:06:04,773 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([902] L75-3-->L75-4: Formula: (= (+ |v_thread3Thread1of1ForFork1_#t~post13#1_3| 1) |v_thread3Thread1of1ForFork1_~i~2#1_13|) InVars {thread3Thread1of1ForFork1_#t~post13#1=|v_thread3Thread1of1ForFork1_#t~post13#1_3|} OutVars{thread3Thread1of1ForFork1_~i~2#1=|v_thread3Thread1of1ForFork1_~i~2#1_13|, thread3Thread1of1ForFork1_#t~post13#1=|v_thread3Thread1of1ForFork1_#t~post13#1_3|} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_~i~2#1][221], [Black: 2138#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), Black: 279#(<= 1 ~N~0), 113#L54true, Black: 2140#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0) (<= 1 ~M~0)), Black: 1148#(and (or (< |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (<= 1 ~N~0)) (or (not (< |ULTIMATE.start_create_fresh_int_array_~i~3#1| |ULTIMATE.start_create_fresh_int_array_~size#1|)) (<= 1 ~N~0)) (or (<= 1 ~N~0) (< |ULTIMATE.start_create_fresh_int_array_#in~size#1| 1))), Black: 2132#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), 18#L62-4true, 1161#(<= 1 ~N~0), Black: 259#(and (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 0) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_~size#1|)), 5#L101-4true, 2148#true, 171#L75-4true, 245#true, Black: 2134#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (<= 1 ~N~0)), Black: 2136#(and (<= 1 ~N~0) (<= 1 ~M~0))]) [2022-09-20 21:06:04,773 INFO L383 tUnfolder$Statistics]: this new event has 184 ancestors and is cut-off event [2022-09-20 21:06:04,773 INFO L386 tUnfolder$Statistics]: existing Event has 168 ancestors and is cut-off event [2022-09-20 21:06:04,773 INFO L386 tUnfolder$Statistics]: existing Event has 175 ancestors and is cut-off event [2022-09-20 21:06:04,773 INFO L386 tUnfolder$Statistics]: existing Event has 168 ancestors and is cut-off event [2022-09-20 21:06:04,775 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([915] thread2EXIT-->L103-2: Formula: (and (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem31#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_thread2Thread1of1ForFork0_thidvar0_4) (= v_thread2Thread1of1ForFork0_thidvar2_4 0) (= v_thread2Thread1of1ForFork0_thidvar1_4 0)) InVars {ULTIMATE.start_main_#t~mem31#1=|v_ULTIMATE.start_main_#t~mem31#1_5|, thread2Thread1of1ForFork0_thidvar2=v_thread2Thread1of1ForFork0_thidvar2_4, thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_4, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem31#1=|v_ULTIMATE.start_main_#t~mem31#1_5|, thread2Thread1of1ForFork0_thidvar2=v_thread2Thread1of1ForFork0_thidvar2_4, thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_4, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_4} AuxVars[] AssignedVars[][241], [Black: 2138#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), 2134#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (<= 1 ~N~0)), Black: 1161#(<= 1 ~N~0), Black: 1150#(and (< |thread1Thread1of1ForFork2_~i~0#1| ~N~0) (<= 1 ~N~0)), Black: 1148#(and (or (< |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (<= 1 ~N~0)) (or (not (< |ULTIMATE.start_create_fresh_int_array_~i~3#1| |ULTIMATE.start_create_fresh_int_array_~size#1|)) (<= 1 ~N~0)) (or (<= 1 ~N~0) (< |ULTIMATE.start_create_fresh_int_array_#in~size#1| 1))), Black: 2140#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0) (<= 1 ~M~0)), Black: 2132#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), 2191#(= ~res1~0 0), Black: 259#(and (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 0) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_~size#1|)), 200#L103-2true, 245#true, 19#L80true, 279#(<= 1 ~N~0), Black: 2136#(and (<= 1 ~N~0) (<= 1 ~M~0))]) [2022-09-20 21:06:04,775 INFO L383 tUnfolder$Statistics]: this new event has 192 ancestors and is cut-off event [2022-09-20 21:06:04,775 INFO L386 tUnfolder$Statistics]: existing Event has 183 ancestors and is cut-off event [2022-09-20 21:06:04,775 INFO L386 tUnfolder$Statistics]: existing Event has 176 ancestors and is cut-off event [2022-09-20 21:06:04,775 INFO L386 tUnfolder$Statistics]: existing Event has 160 ancestors and is cut-off event [2022-09-20 21:06:04,778 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([915] thread2EXIT-->L103-2: Formula: (and (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem31#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_thread2Thread1of1ForFork0_thidvar0_4) (= v_thread2Thread1of1ForFork0_thidvar2_4 0) (= v_thread2Thread1of1ForFork0_thidvar1_4 0)) InVars {ULTIMATE.start_main_#t~mem31#1=|v_ULTIMATE.start_main_#t~mem31#1_5|, thread2Thread1of1ForFork0_thidvar2=v_thread2Thread1of1ForFork0_thidvar2_4, thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_4, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem31#1=|v_ULTIMATE.start_main_#t~mem31#1_5|, thread2Thread1of1ForFork0_thidvar2=v_thread2Thread1of1ForFork0_thidvar2_4, thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_4, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_4} AuxVars[] AssignedVars[][238], [Black: 2138#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), 2134#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (<= 1 ~N~0)), Black: 1161#(<= 1 ~N~0), Black: 1150#(and (< |thread1Thread1of1ForFork2_~i~0#1| ~N~0) (<= 1 ~N~0)), Black: 1148#(and (or (< |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (<= 1 ~N~0)) (or (not (< |ULTIMATE.start_create_fresh_int_array_~i~3#1| |ULTIMATE.start_create_fresh_int_array_~size#1|)) (<= 1 ~N~0)) (or (<= 1 ~N~0) (< |ULTIMATE.start_create_fresh_int_array_#in~size#1| 1))), Black: 2140#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0) (<= 1 ~M~0)), Black: 2132#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), Black: 259#(and (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 0) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_~size#1|)), 2148#true, 200#L103-2true, 245#true, 19#L80true, 279#(<= 1 ~N~0), Black: 2136#(and (<= 1 ~N~0) (<= 1 ~M~0))]) [2022-09-20 21:06:04,778 INFO L383 tUnfolder$Statistics]: this new event has 199 ancestors and is cut-off event [2022-09-20 21:06:04,778 INFO L386 tUnfolder$Statistics]: existing Event has 190 ancestors and is cut-off event [2022-09-20 21:06:04,778 INFO L386 tUnfolder$Statistics]: existing Event has 183 ancestors and is cut-off event [2022-09-20 21:06:04,779 INFO L386 tUnfolder$Statistics]: existing Event has 167 ancestors and is cut-off event [2022-09-20 21:06:04,779 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([902] L75-3-->L75-4: Formula: (= (+ |v_thread3Thread1of1ForFork1_#t~post13#1_3| 1) |v_thread3Thread1of1ForFork1_~i~2#1_13|) InVars {thread3Thread1of1ForFork1_#t~post13#1=|v_thread3Thread1of1ForFork1_#t~post13#1_3|} OutVars{thread3Thread1of1ForFork1_~i~2#1=|v_thread3Thread1of1ForFork1_~i~2#1_13|, thread3Thread1of1ForFork1_#t~post13#1=|v_thread3Thread1of1ForFork1_#t~post13#1_3|} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_~i~2#1][221], [Black: 2138#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), Black: 1150#(and (< |thread1Thread1of1ForFork2_~i~0#1| ~N~0) (<= 1 ~N~0)), Black: 2140#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0) (<= 1 ~M~0)), Black: 1148#(and (or (< |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (<= 1 ~N~0)) (or (not (< |ULTIMATE.start_create_fresh_int_array_~i~3#1| |ULTIMATE.start_create_fresh_int_array_~size#1|)) (<= 1 ~N~0)) (or (<= 1 ~N~0) (< |ULTIMATE.start_create_fresh_int_array_#in~size#1| 1))), Black: 2132#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), 18#L62-4true, 2191#(= ~res1~0 0), 1161#(<= 1 ~N~0), Black: 259#(and (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 0) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_~size#1|)), 171#L75-4true, 35#L102-2true, 245#true, 279#(<= 1 ~N~0), Black: 2134#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (<= 1 ~N~0)), Black: 2136#(and (<= 1 ~N~0) (<= 1 ~M~0))]) [2022-09-20 21:06:04,779 INFO L383 tUnfolder$Statistics]: this new event has 193 ancestors and is cut-off event [2022-09-20 21:06:04,779 INFO L386 tUnfolder$Statistics]: existing Event has 177 ancestors and is cut-off event [2022-09-20 21:06:04,779 INFO L386 tUnfolder$Statistics]: existing Event has 184 ancestors and is cut-off event [2022-09-20 21:06:04,779 INFO L386 tUnfolder$Statistics]: existing Event has 177 ancestors and is cut-off event [2022-09-20 21:06:04,780 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([902] L75-3-->L75-4: Formula: (= (+ |v_thread3Thread1of1ForFork1_#t~post13#1_3| 1) |v_thread3Thread1of1ForFork1_~i~2#1_13|) InVars {thread3Thread1of1ForFork1_#t~post13#1=|v_thread3Thread1of1ForFork1_#t~post13#1_3|} OutVars{thread3Thread1of1ForFork1_~i~2#1=|v_thread3Thread1of1ForFork1_~i~2#1_13|, thread3Thread1of1ForFork1_#t~post13#1=|v_thread3Thread1of1ForFork1_#t~post13#1_3|} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_~i~2#1][221], [Black: 2138#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), Black: 1150#(and (< |thread1Thread1of1ForFork2_~i~0#1| ~N~0) (<= 1 ~N~0)), Black: 2140#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0) (<= 1 ~M~0)), Black: 1148#(and (or (< |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (<= 1 ~N~0)) (or (not (< |ULTIMATE.start_create_fresh_int_array_~i~3#1| |ULTIMATE.start_create_fresh_int_array_~size#1|)) (<= 1 ~N~0)) (or (<= 1 ~N~0) (< |ULTIMATE.start_create_fresh_int_array_#in~size#1| 1))), Black: 2132#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), 18#L62-4true, 1161#(<= 1 ~N~0), Black: 259#(and (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 0) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_~size#1|)), 2148#true, 171#L75-4true, 35#L102-2true, 245#true, 279#(<= 1 ~N~0), Black: 2134#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (<= 1 ~N~0)), Black: 2136#(and (<= 1 ~N~0) (<= 1 ~M~0))]) [2022-09-20 21:06:04,780 INFO L383 tUnfolder$Statistics]: this new event has 200 ancestors and is cut-off event [2022-09-20 21:06:04,780 INFO L386 tUnfolder$Statistics]: existing Event has 184 ancestors and is cut-off event [2022-09-20 21:06:04,780 INFO L386 tUnfolder$Statistics]: existing Event has 184 ancestors and is cut-off event [2022-09-20 21:06:04,780 INFO L386 tUnfolder$Statistics]: existing Event has 191 ancestors and is cut-off event [2022-09-20 21:06:04,780 INFO L130 PetriNetUnfolder]: 188/1232 cut-off events. [2022-09-20 21:06:04,780 INFO L131 PetriNetUnfolder]: For 208/240 co-relation queries the response was YES. [2022-09-20 21:06:04,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1814 conditions, 1232 events. 188/1232 cut-off events. For 208/240 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 7299 event pairs, 7 based on Foata normal form. 2/1154 useless extension candidates. Maximal degree in co-relation 1800. Up to 77 conditions per place. [2022-09-20 21:06:04,791 INFO L137 encePairwiseOnDemand]: 249/257 looper letters, 47 selfloop transitions, 6 changer transitions 4/257 dead transitions. [2022-09-20 21:06:04,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 257 transitions, 755 flow [2022-09-20 21:06:04,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-20 21:06:04,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-20 21:06:04,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1246 transitions. [2022-09-20 21:06:04,793 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.808041504539559 [2022-09-20 21:06:04,793 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1246 transitions. [2022-09-20 21:06:04,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1246 transitions. [2022-09-20 21:06:04,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:06:04,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1246 transitions. [2022-09-20 21:06:04,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 207.66666666666666) internal successors, (1246), 6 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:04,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 257.0) internal successors, (1799), 7 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:04,798 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 257.0) internal successors, (1799), 7 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:04,798 INFO L175 Difference]: Start difference. First operand has 240 places, 235 transitions, 588 flow. Second operand 6 states and 1246 transitions. [2022-09-20 21:06:04,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 257 transitions, 755 flow [2022-09-20 21:06:04,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 257 transitions, 748 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 21:06:04,806 INFO L231 Difference]: Finished difference. Result has 244 places, 239 transitions, 617 flow [2022-09-20 21:06:04,806 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=617, PETRI_PLACES=244, PETRI_TRANSITIONS=239} [2022-09-20 21:06:04,808 INFO L287 CegarLoopForPetriNet]: 228 programPoint places, 16 predicate places. [2022-09-20 21:06:04,808 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 239 transitions, 617 flow [2022-09-20 21:06:04,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 203.33333333333334) internal successors, (1220), 6 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:04,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:06:04,808 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:06:04,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-20 21:06:05,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:06:05,016 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:06:05,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:06:05,016 INFO L85 PathProgramCache]: Analyzing trace with hash 53574630, now seen corresponding path program 1 times [2022-09-20 21:06:05,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:06:05,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491430627] [2022-09-20 21:06:05,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:06:05,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:06:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:06:05,098 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 21:06:05,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:06:05,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491430627] [2022-09-20 21:06:05,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491430627] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:06:05,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766913009] [2022-09-20 21:06:05,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:06:05,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:06:05,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:06:05,100 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 21:06:05,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-20 21:06:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:06:05,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-20 21:06:05,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:06:05,369 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 21:06:05,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:06:05,539 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 21:06:05,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766913009] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 21:06:05,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 21:06:05,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2022-09-20 21:06:05,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999870670] [2022-09-20 21:06:05,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:06:05,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 21:06:05,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:06:05,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 21:06:05,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-09-20 21:06:05,542 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 257 [2022-09-20 21:06:05,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 239 transitions, 617 flow. Second operand has 9 states, 9 states have (on average 189.22222222222223) internal successors, (1703), 9 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:05,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:06:05,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 257 [2022-09-20 21:06:05,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:06:06,930 INFO L130 PetriNetUnfolder]: 4159/10926 cut-off events. [2022-09-20 21:06:06,930 INFO L131 PetriNetUnfolder]: For 6685/7637 co-relation queries the response was YES. [2022-09-20 21:06:06,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22589 conditions, 10926 events. 4159/10926 cut-off events. For 6685/7637 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 110269 event pairs, 712 based on Foata normal form. 938/10972 useless extension candidates. Maximal degree in co-relation 22572. Up to 1647 conditions per place. [2022-09-20 21:06:07,012 INFO L137 encePairwiseOnDemand]: 246/257 looper letters, 143 selfloop transitions, 27 changer transitions 0/336 dead transitions. [2022-09-20 21:06:07,012 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 336 transitions, 1373 flow [2022-09-20 21:06:07,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 21:06:07,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 21:06:07,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2156 transitions. [2022-09-20 21:06:07,016 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7626459143968871 [2022-09-20 21:06:07,016 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2156 transitions. [2022-09-20 21:06:07,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2156 transitions. [2022-09-20 21:06:07,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:06:07,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2156 transitions. [2022-09-20 21:06:07,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 196.0) internal successors, (2156), 11 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:07,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 257.0) internal successors, (3084), 12 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:07,023 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 257.0) internal successors, (3084), 12 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:07,023 INFO L175 Difference]: Start difference. First operand has 244 places, 239 transitions, 617 flow. Second operand 11 states and 2156 transitions. [2022-09-20 21:06:07,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 336 transitions, 1373 flow [2022-09-20 21:06:07,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 336 transitions, 1369 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-09-20 21:06:07,047 INFO L231 Difference]: Finished difference. Result has 254 places, 256 transitions, 810 flow [2022-09-20 21:06:07,047 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=810, PETRI_PLACES=254, PETRI_TRANSITIONS=256} [2022-09-20 21:06:07,048 INFO L287 CegarLoopForPetriNet]: 228 programPoint places, 26 predicate places. [2022-09-20 21:06:07,048 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 256 transitions, 810 flow [2022-09-20 21:06:07,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 189.22222222222223) internal successors, (1703), 9 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:07,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:06:07,049 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:06:07,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-20 21:06:07,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:06:07,267 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:06:07,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:06:07,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1985158974, now seen corresponding path program 2 times [2022-09-20 21:06:07,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:06:07,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329012738] [2022-09-20 21:06:07,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:06:07,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:06:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:06:07,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 21:06:07,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:06:07,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329012738] [2022-09-20 21:06:07,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329012738] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:06:07,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635570727] [2022-09-20 21:06:07,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-20 21:06:07,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:06:07,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:06:07,366 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 21:06:07,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-20 21:06:07,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-20 21:06:07,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 21:06:07,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-20 21:06:07,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:06:07,617 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-09-20 21:06:07,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-20 21:06:07,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635570727] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:06:07,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-20 21:06:07,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-09-20 21:06:07,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26353121] [2022-09-20 21:06:07,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:06:07,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 21:06:07,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:06:07,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 21:06:07,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-09-20 21:06:07,620 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 257 [2022-09-20 21:06:07,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 256 transitions, 810 flow. Second operand has 6 states, 6 states have (on average 190.83333333333334) internal successors, (1145), 6 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:07,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:06:07,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 257 [2022-09-20 21:06:07,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:06:08,438 INFO L130 PetriNetUnfolder]: 1956/6202 cut-off events. [2022-09-20 21:06:08,438 INFO L131 PetriNetUnfolder]: For 6059/6619 co-relation queries the response was YES. [2022-09-20 21:06:08,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13223 conditions, 6202 events. 1956/6202 cut-off events. For 6059/6619 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 58912 event pairs, 360 based on Foata normal form. 581/6225 useless extension candidates. Maximal degree in co-relation 13203. Up to 1802 conditions per place. [2022-09-20 21:06:08,487 INFO L137 encePairwiseOnDemand]: 248/257 looper letters, 65 selfloop transitions, 18 changer transitions 0/261 dead transitions. [2022-09-20 21:06:08,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 261 transitions, 983 flow [2022-09-20 21:06:08,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 21:06:08,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 21:06:08,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1531 transitions. [2022-09-20 21:06:08,490 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7446498054474708 [2022-09-20 21:06:08,490 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1531 transitions. [2022-09-20 21:06:08,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1531 transitions. [2022-09-20 21:06:08,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:06:08,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1531 transitions. [2022-09-20 21:06:08,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 191.375) internal successors, (1531), 8 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:08,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 257.0) internal successors, (2313), 9 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:08,496 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 257.0) internal successors, (2313), 9 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:08,496 INFO L175 Difference]: Start difference. First operand has 254 places, 256 transitions, 810 flow. Second operand 8 states and 1531 transitions. [2022-09-20 21:06:08,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 261 transitions, 983 flow [2022-09-20 21:06:08,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 261 transitions, 951 flow, removed 10 selfloop flow, removed 7 redundant places. [2022-09-20 21:06:08,516 INFO L231 Difference]: Finished difference. Result has 252 places, 249 transitions, 768 flow [2022-09-20 21:06:08,516 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=768, PETRI_PLACES=252, PETRI_TRANSITIONS=249} [2022-09-20 21:06:08,517 INFO L287 CegarLoopForPetriNet]: 228 programPoint places, 24 predicate places. [2022-09-20 21:06:08,517 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 249 transitions, 768 flow [2022-09-20 21:06:08,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.83333333333334) internal successors, (1145), 6 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:08,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:06:08,518 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:06:08,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-20 21:06:08,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:06:08,728 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:06:08,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:06:08,729 INFO L85 PathProgramCache]: Analyzing trace with hash 570630618, now seen corresponding path program 1 times [2022-09-20 21:06:08,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:06:08,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666847020] [2022-09-20 21:06:08,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:06:08,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:06:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:06:08,855 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:06:08,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:06:08,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666847020] [2022-09-20 21:06:08,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666847020] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:06:08,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:06:08,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-20 21:06:08,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063613713] [2022-09-20 21:06:08,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:06:08,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-20 21:06:08,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:06:08,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-20 21:06:08,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-09-20 21:06:08,860 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 257 [2022-09-20 21:06:08,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 249 transitions, 768 flow. Second operand has 12 states, 12 states have (on average 173.16666666666666) internal successors, (2078), 12 states have internal predecessors, (2078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:08,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:06:08,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 257 [2022-09-20 21:06:08,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:06:22,399 INFO L130 PetriNetUnfolder]: 57595/126340 cut-off events. [2022-09-20 21:06:22,399 INFO L131 PetriNetUnfolder]: For 44485/45680 co-relation queries the response was YES. [2022-09-20 21:06:23,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245969 conditions, 126340 events. 57595/126340 cut-off events. For 44485/45680 co-relation queries the response was YES. Maximal size of possible extension queue 3798. Compared 1582502 event pairs, 27819 based on Foata normal form. 554/116760 useless extension candidates. Maximal degree in co-relation 245952. Up to 28197 conditions per place. [2022-09-20 21:06:23,777 INFO L137 encePairwiseOnDemand]: 237/257 looper letters, 255 selfloop transitions, 36 changer transitions 0/462 dead transitions. [2022-09-20 21:06:23,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 462 transitions, 1935 flow [2022-09-20 21:06:23,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 21:06:23,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 21:06:23,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3117 transitions. [2022-09-20 21:06:23,782 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7134355687800412 [2022-09-20 21:06:23,782 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3117 transitions. [2022-09-20 21:06:23,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3117 transitions. [2022-09-20 21:06:23,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:06:23,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3117 transitions. [2022-09-20 21:06:23,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 183.35294117647058) internal successors, (3117), 17 states have internal predecessors, (3117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:23,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 257.0) internal successors, (4626), 18 states have internal predecessors, (4626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:23,794 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 257.0) internal successors, (4626), 18 states have internal predecessors, (4626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:23,794 INFO L175 Difference]: Start difference. First operand has 252 places, 249 transitions, 768 flow. Second operand 17 states and 3117 transitions. [2022-09-20 21:06:23,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 462 transitions, 1935 flow [2022-09-20 21:06:24,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 462 transitions, 1915 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-20 21:06:24,348 INFO L231 Difference]: Finished difference. Result has 273 places, 283 transitions, 985 flow [2022-09-20 21:06:24,349 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=985, PETRI_PLACES=273, PETRI_TRANSITIONS=283} [2022-09-20 21:06:24,350 INFO L287 CegarLoopForPetriNet]: 228 programPoint places, 45 predicate places. [2022-09-20 21:06:24,350 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 283 transitions, 985 flow [2022-09-20 21:06:24,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 173.16666666666666) internal successors, (2078), 12 states have internal predecessors, (2078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:24,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:06:24,352 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:06:24,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 21:06:24,352 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:06:24,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:06:24,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1974525692, now seen corresponding path program 1 times [2022-09-20 21:06:24,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:06:24,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34810764] [2022-09-20 21:06:24,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:06:24,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:06:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:06:24,510 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:06:24,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:06:24,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34810764] [2022-09-20 21:06:24,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34810764] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:06:24,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:06:24,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-20 21:06:24,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605526032] [2022-09-20 21:06:24,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:06:24,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-20 21:06:24,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:06:24,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-20 21:06:24,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-09-20 21:06:24,513 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 257 [2022-09-20 21:06:24,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 283 transitions, 985 flow. Second operand has 12 states, 12 states have (on average 173.16666666666666) internal successors, (2078), 12 states have internal predecessors, (2078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:24,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:06:24,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 257 [2022-09-20 21:06:24,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:06:36,513 INFO L130 PetriNetUnfolder]: 51910/95256 cut-off events. [2022-09-20 21:06:36,513 INFO L131 PetriNetUnfolder]: For 78570/79858 co-relation queries the response was YES. [2022-09-20 21:06:37,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232803 conditions, 95256 events. 51910/95256 cut-off events. For 78570/79858 co-relation queries the response was YES. Maximal size of possible extension queue 3274. Compared 1034949 event pairs, 22608 based on Foata normal form. 1046/91950 useless extension candidates. Maximal degree in co-relation 232776. Up to 29133 conditions per place. [2022-09-20 21:06:37,753 INFO L137 encePairwiseOnDemand]: 239/257 looper letters, 288 selfloop transitions, 21 changer transitions 2/478 dead transitions. [2022-09-20 21:06:37,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 478 transitions, 2374 flow [2022-09-20 21:06:37,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-20 21:06:37,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-20 21:06:37,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2737 transitions. [2022-09-20 21:06:37,757 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7099870298313878 [2022-09-20 21:06:37,757 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2737 transitions. [2022-09-20 21:06:37,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2737 transitions. [2022-09-20 21:06:37,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:06:37,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2737 transitions. [2022-09-20 21:06:37,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 182.46666666666667) internal successors, (2737), 15 states have internal predecessors, (2737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:37,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 257.0) internal successors, (4112), 16 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:37,766 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 257.0) internal successors, (4112), 16 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:37,766 INFO L175 Difference]: Start difference. First operand has 273 places, 283 transitions, 985 flow. Second operand 15 states and 2737 transitions. [2022-09-20 21:06:37,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 478 transitions, 2374 flow [2022-09-20 21:06:38,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 478 transitions, 2367 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-20 21:06:38,646 INFO L231 Difference]: Finished difference. Result has 293 places, 297 transitions, 1149 flow [2022-09-20 21:06:38,647 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1149, PETRI_PLACES=293, PETRI_TRANSITIONS=297} [2022-09-20 21:06:38,647 INFO L287 CegarLoopForPetriNet]: 228 programPoint places, 65 predicate places. [2022-09-20 21:06:38,647 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 297 transitions, 1149 flow [2022-09-20 21:06:38,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 173.16666666666666) internal successors, (2078), 12 states have internal predecessors, (2078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:38,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:06:38,648 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:06:38,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-20 21:06:38,648 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:06:38,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:06:38,648 INFO L85 PathProgramCache]: Analyzing trace with hash 886910242, now seen corresponding path program 2 times [2022-09-20 21:06:38,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:06:38,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734961498] [2022-09-20 21:06:38,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:06:38,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:06:38,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:06:38,889 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:06:38,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:06:38,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734961498] [2022-09-20 21:06:38,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734961498] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:06:38,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:06:38,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 21:06:38,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582031065] [2022-09-20 21:06:38,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:06:38,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 21:06:38,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:06:38,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 21:06:38,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-09-20 21:06:38,892 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 257 [2022-09-20 21:06:38,894 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 297 transitions, 1149 flow. Second operand has 19 states, 19 states have (on average 150.21052631578948) internal successors, (2854), 19 states have internal predecessors, (2854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:38,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:06:38,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 257 [2022-09-20 21:06:38,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:06:56,782 INFO L130 PetriNetUnfolder]: 56061/127105 cut-off events. [2022-09-20 21:06:56,782 INFO L131 PetriNetUnfolder]: For 113509/115932 co-relation queries the response was YES. [2022-09-20 21:06:58,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321091 conditions, 127105 events. 56061/127105 cut-off events. For 113509/115932 co-relation queries the response was YES. Maximal size of possible extension queue 3818. Compared 1631114 event pairs, 28247 based on Foata normal form. 2001/124084 useless extension candidates. Maximal degree in co-relation 321055. Up to 28026 conditions per place. [2022-09-20 21:06:58,859 INFO L137 encePairwiseOnDemand]: 226/257 looper letters, 252 selfloop transitions, 48 changer transitions 1/465 dead transitions. [2022-09-20 21:06:58,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 465 transitions, 2357 flow [2022-09-20 21:06:58,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-09-20 21:06:58,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-09-20 21:06:58,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4796 transitions. [2022-09-20 21:06:58,865 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6019831806200577 [2022-09-20 21:06:58,865 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4796 transitions. [2022-09-20 21:06:58,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4796 transitions. [2022-09-20 21:06:58,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:06:58,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4796 transitions. [2022-09-20 21:06:58,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 154.70967741935485) internal successors, (4796), 31 states have internal predecessors, (4796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:58,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 257.0) internal successors, (8224), 32 states have internal predecessors, (8224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:58,879 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 257.0) internal successors, (8224), 32 states have internal predecessors, (8224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:06:58,879 INFO L175 Difference]: Start difference. First operand has 293 places, 297 transitions, 1149 flow. Second operand 31 states and 4796 transitions. [2022-09-20 21:06:58,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 465 transitions, 2357 flow [2022-09-20 21:07:05,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 465 transitions, 2347 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 21:07:05,785 INFO L231 Difference]: Finished difference. Result has 327 places, 307 transitions, 1353 flow [2022-09-20 21:07:05,786 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1353, PETRI_PLACES=327, PETRI_TRANSITIONS=307} [2022-09-20 21:07:05,787 INFO L287 CegarLoopForPetriNet]: 228 programPoint places, 99 predicate places. [2022-09-20 21:07:05,787 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 307 transitions, 1353 flow [2022-09-20 21:07:05,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 150.21052631578948) internal successors, (2854), 19 states have internal predecessors, (2854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:07:05,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:07:05,788 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:07:05,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-20 21:07:05,788 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:07:05,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:07:05,789 INFO L85 PathProgramCache]: Analyzing trace with hash 55682052, now seen corresponding path program 3 times [2022-09-20 21:07:05,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:07:05,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912237954] [2022-09-20 21:07:05,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:07:05,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:07:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:07:06,071 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:07:06,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:07:06,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912237954] [2022-09-20 21:07:06,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912237954] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:07:06,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:07:06,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-09-20 21:07:06,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773674266] [2022-09-20 21:07:06,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:07:06,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-09-20 21:07:06,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:07:06,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-09-20 21:07:06,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-09-20 21:07:06,074 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 257 [2022-09-20 21:07:06,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 307 transitions, 1353 flow. Second operand has 20 states, 20 states have (on average 148.05) internal successors, (2961), 20 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:07:06,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:07:06,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 257 [2022-09-20 21:07:06,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand