/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 22:35:00,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 22:35:00,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 22:35:00,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 22:35:00,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 22:35:00,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 22:35:00,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 22:35:00,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 22:35:00,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 22:35:00,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 22:35:00,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 22:35:00,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 22:35:00,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 22:35:00,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 22:35:00,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 22:35:00,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 22:35:00,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 22:35:00,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 22:35:00,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 22:35:00,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 22:35:00,234 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 22:35:00,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 22:35:00,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 22:35:00,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 22:35:00,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 22:35:00,239 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 22:35:00,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 22:35:00,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 22:35:00,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 22:35:00,240 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 22:35:00,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 22:35:00,241 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 22:35:00,241 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 22:35:00,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 22:35:00,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 22:35:00,242 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 22:35:00,243 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-VariableLbe.epf [2023-01-27 22:35:00,268 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 22:35:00,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 22:35:00,269 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 22:35:00,269 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 22:35:00,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 22:35:00,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 22:35:00,269 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 22:35:00,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 22:35:00,270 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 22:35:00,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 22:35:00,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 22:35:00,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 22:35:00,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 22:35:00,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 22:35:00,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 22:35:00,270 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 22:35:00,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 22:35:00,270 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 22:35:00,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 22:35:00,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 22:35:00,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 22:35:00,271 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 22:35:00,271 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 22:35:00,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 22:35:00,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 22:35:00,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 22:35:00,272 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 22:35:00,272 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 22:35:00,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 22:35:00,272 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 22:35:00,272 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 22:35:00,272 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 22:35:00,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 22:35:00,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 22:35:00,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 22:35:00,476 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 22:35:00,476 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 22:35:00,477 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c [2023-01-27 22:35:01,374 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 22:35:01,578 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 22:35:01,578 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c [2023-01-27 22:35:01,583 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8c9c73d9/47aae75761184a9d87a7ab5f9596f014/FLAG8b8fd89e5 [2023-01-27 22:35:01,595 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8c9c73d9/47aae75761184a9d87a7ab5f9596f014 [2023-01-27 22:35:01,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 22:35:01,598 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 22:35:01,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 22:35:01,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 22:35:01,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 22:35:01,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 10:35:01" (1/1) ... [2023-01-27 22:35:01,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fc4f445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:35:01, skipping insertion in model container [2023-01-27 22:35:01,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 10:35:01" (1/1) ... [2023-01-27 22:35:01,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 22:35:01,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 22:35:01,774 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c[4380,4393] [2023-01-27 22:35:01,785 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 22:35:01,791 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 22:35:01,812 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c[4380,4393] [2023-01-27 22:35:01,815 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 22:35:01,821 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 22:35:01,821 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 22:35:01,827 INFO L208 MainTranslator]: Completed translation [2023-01-27 22:35:01,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:35:01 WrapperNode [2023-01-27 22:35:01,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 22:35:01,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 22:35:01,828 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 22:35:01,831 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 22:35:01,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:35:01" (1/1) ... [2023-01-27 22:35:01,842 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:35:01" (1/1) ... [2023-01-27 22:35:01,862 INFO L138 Inliner]: procedures = 28, calls = 80, calls flagged for inlining = 26, calls inlined = 32, statements flattened = 406 [2023-01-27 22:35:01,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 22:35:01,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 22:35:01,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 22:35:01,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 22:35:01,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:35:01" (1/1) ... [2023-01-27 22:35:01,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:35:01" (1/1) ... [2023-01-27 22:35:01,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:35:01" (1/1) ... [2023-01-27 22:35:01,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:35:01" (1/1) ... [2023-01-27 22:35:01,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:35:01" (1/1) ... [2023-01-27 22:35:01,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:35:01" (1/1) ... [2023-01-27 22:35:01,889 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:35:01" (1/1) ... [2023-01-27 22:35:01,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:35:01" (1/1) ... [2023-01-27 22:35:01,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 22:35:01,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 22:35:01,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 22:35:01,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 22:35:01,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:35:01" (1/1) ... [2023-01-27 22:35:01,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 22:35:01,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:35:01,916 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) [2023-01-27 22:35:01,919 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 [2023-01-27 22:35:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 22:35:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-27 22:35:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 22:35:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 22:35:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 22:35:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-01-27 22:35:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 22:35:01,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 22:35:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 22:35:01,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 22:35:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 22:35:01,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 22:35:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 22:35:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 22:35:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 22:35:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 22:35:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 22:35:01,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 22:35:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 22:35:01,943 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 22:35:02,042 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 22:35:02,043 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 22:35:02,485 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 22:35:02,576 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 22:35:02,576 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-01-27 22:35:02,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 10:35:02 BoogieIcfgContainer [2023-01-27 22:35:02,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 22:35:02,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 22:35:02,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 22:35:02,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 22:35:02,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 10:35:01" (1/3) ... [2023-01-27 22:35:02,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b20d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 10:35:02, skipping insertion in model container [2023-01-27 22:35:02,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:35:01" (2/3) ... [2023-01-27 22:35:02,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b20d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 10:35:02, skipping insertion in model container [2023-01-27 22:35:02,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 10:35:02" (3/3) ... [2023-01-27 22:35:02,587 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2023-01-27 22:35:02,598 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 22:35:02,598 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 22:35:02,598 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 22:35:02,679 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-27 22:35:02,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 360 places, 387 transitions, 798 flow [2023-01-27 22:35:02,827 INFO L130 PetriNetUnfolder]: 37/384 cut-off events. [2023-01-27 22:35:02,828 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 22:35:02,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 384 events. 37/384 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 413 event pairs, 0 based on Foata normal form. 0/346 useless extension candidates. Maximal degree in co-relation 305. Up to 2 conditions per place. [2023-01-27 22:35:02,834 INFO L82 GeneralOperation]: Start removeDead. Operand has 360 places, 387 transitions, 798 flow [2023-01-27 22:35:02,838 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 347 places, 374 transitions, 766 flow [2023-01-27 22:35:02,840 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 22:35:02,849 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 347 places, 374 transitions, 766 flow [2023-01-27 22:35:02,851 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 347 places, 374 transitions, 766 flow [2023-01-27 22:35:02,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 347 places, 374 transitions, 766 flow [2023-01-27 22:35:02,906 INFO L130 PetriNetUnfolder]: 37/374 cut-off events. [2023-01-27 22:35:02,906 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 22:35:02,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 374 events. 37/374 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 388 event pairs, 0 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 305. Up to 2 conditions per place. [2023-01-27 22:35:02,910 INFO L119 LiptonReduction]: Number of co-enabled transitions 4578 [2023-01-27 22:35:13,563 INFO L134 LiptonReduction]: Checked pairs total: 5390 [2023-01-27 22:35:13,563 INFO L136 LiptonReduction]: Total number of compositions: 429 [2023-01-27 22:35:13,572 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 22:35:13,576 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;@828cffc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 22:35:13,576 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 22:35:13,581 INFO L130 PetriNetUnfolder]: 9/34 cut-off events. [2023-01-27 22:35:13,581 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 22:35:13,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:35:13,582 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] [2023-01-27 22:35:13,582 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)] === [2023-01-27 22:35:13,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:35:13,585 INFO L85 PathProgramCache]: Analyzing trace with hash 450077520, now seen corresponding path program 1 times [2023-01-27 22:35:13,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:35:13,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649018212] [2023-01-27 22:35:13,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:35:13,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:35:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:35:13,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:35:13,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:35:13,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649018212] [2023-01-27 22:35:13,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649018212] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 22:35:13,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 22:35:13,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 22:35:13,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358491535] [2023-01-27 22:35:13,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:35:13,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 22:35:13,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:35:14,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 22:35:14,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 22:35:14,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 816 [2023-01-27 22:35:14,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 353.0) internal successors, (1059), 3 states have internal predecessors, (1059), 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) [2023-01-27 22:35:14,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:35:14,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 816 [2023-01-27 22:35:14,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:35:14,121 INFO L130 PetriNetUnfolder]: 251/392 cut-off events. [2023-01-27 22:35:14,121 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-01-27 22:35:14,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 828 conditions, 392 events. 251/392 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1419 event pairs, 67 based on Foata normal form. 0/290 useless extension candidates. Maximal degree in co-relation 656. Up to 227 conditions per place. [2023-01-27 22:35:14,126 INFO L137 encePairwiseOnDemand]: 813/816 looper letters, 43 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-01-27 22:35:14,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 208 flow [2023-01-27 22:35:14,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 22:35:14,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 22:35:14,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1084 transitions. [2023-01-27 22:35:14,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44281045751633985 [2023-01-27 22:35:14,142 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1084 transitions. [2023-01-27 22:35:14,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1084 transitions. [2023-01-27 22:35:14,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:35:14,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1084 transitions. [2023-01-27 22:35:14,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 361.3333333333333) internal successors, (1084), 3 states have internal predecessors, (1084), 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) [2023-01-27 22:35:14,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 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) [2023-01-27 22:35:14,161 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 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) [2023-01-27 22:35:14,162 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 88 flow. Second operand 3 states and 1084 transitions. [2023-01-27 22:35:14,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 208 flow [2023-01-27 22:35:14,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 47 transitions, 192 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-27 22:35:14,168 INFO L231 Difference]: Finished difference. Result has 33 places, 36 transitions, 88 flow [2023-01-27 22:35:14,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=33, PETRI_TRANSITIONS=36} [2023-01-27 22:35:14,172 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -3 predicate places. [2023-01-27 22:35:14,172 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 36 transitions, 88 flow [2023-01-27 22:35:14,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 353.0) internal successors, (1059), 3 states have internal predecessors, (1059), 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) [2023-01-27 22:35:14,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:35:14,174 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] [2023-01-27 22:35:14,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 22:35:14,174 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)] === [2023-01-27 22:35:14,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:35:14,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1896403345, now seen corresponding path program 1 times [2023-01-27 22:35:14,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:35:14,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238637524] [2023-01-27 22:35:14,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:35:14,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:35:14,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:35:14,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:35:14,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:35:14,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238637524] [2023-01-27 22:35:14,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238637524] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 22:35:14,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 22:35:14,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 22:35:14,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775520278] [2023-01-27 22:35:14,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:35:14,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 22:35:14,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:35:14,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 22:35:14,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 22:35:14,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 816 [2023-01-27 22:35:14,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 36 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 307.5) internal successors, (1230), 4 states have internal predecessors, (1230), 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) [2023-01-27 22:35:14,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:35:14,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 816 [2023-01-27 22:35:14,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:35:14,537 INFO L130 PetriNetUnfolder]: 322/552 cut-off events. [2023-01-27 22:35:14,537 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2023-01-27 22:35:14,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 552 events. 322/552 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2355 event pairs, 241 based on Foata normal form. 40/459 useless extension candidates. Maximal degree in co-relation 669. Up to 385 conditions per place. [2023-01-27 22:35:14,540 INFO L137 encePairwiseOnDemand]: 806/816 looper letters, 33 selfloop transitions, 2 changer transitions 47/84 dead transitions. [2023-01-27 22:35:14,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 84 transitions, 358 flow [2023-01-27 22:35:14,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 22:35:14,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 22:35:14,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1595 transitions. [2023-01-27 22:35:14,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3909313725490196 [2023-01-27 22:35:14,543 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1595 transitions. [2023-01-27 22:35:14,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1595 transitions. [2023-01-27 22:35:14,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:35:14,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1595 transitions. [2023-01-27 22:35:14,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 319.0) internal successors, (1595), 5 states have internal predecessors, (1595), 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) [2023-01-27 22:35:14,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 816.0) internal successors, (4896), 6 states have internal predecessors, (4896), 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) [2023-01-27 22:35:14,552 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 816.0) internal successors, (4896), 6 states have internal predecessors, (4896), 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) [2023-01-27 22:35:14,552 INFO L175 Difference]: Start difference. First operand has 33 places, 36 transitions, 88 flow. Second operand 5 states and 1595 transitions. [2023-01-27 22:35:14,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 84 transitions, 358 flow [2023-01-27 22:35:14,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 84 transitions, 356 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 22:35:14,555 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 116 flow [2023-01-27 22:35:14,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2023-01-27 22:35:14,557 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2023-01-27 22:35:14,557 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 116 flow [2023-01-27 22:35:14,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 307.5) internal successors, (1230), 4 states have internal predecessors, (1230), 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) [2023-01-27 22:35:14,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:35:14,558 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] [2023-01-27 22:35:14,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 22:35:14,558 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)] === [2023-01-27 22:35:14,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:35:14,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1172777929, now seen corresponding path program 1 times [2023-01-27 22:35:14,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:35:14,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467261929] [2023-01-27 22:35:14,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:35:14,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:35:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:35:14,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:35:14,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:35:14,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467261929] [2023-01-27 22:35:14,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467261929] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 22:35:14,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 22:35:14,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 22:35:14,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326297228] [2023-01-27 22:35:14,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:35:14,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 22:35:14,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:35:14,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 22:35:14,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 22:35:14,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 337 out of 816 [2023-01-27 22:35:14,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 342.75) internal successors, (1371), 4 states have internal predecessors, (1371), 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) [2023-01-27 22:35:14,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:35:14,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 337 of 816 [2023-01-27 22:35:14,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:35:14,789 INFO L130 PetriNetUnfolder]: 303/498 cut-off events. [2023-01-27 22:35:14,789 INFO L131 PetriNetUnfolder]: For 364/364 co-relation queries the response was YES. [2023-01-27 22:35:14,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1266 conditions, 498 events. 303/498 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1844 event pairs, 224 based on Foata normal form. 22/448 useless extension candidates. Maximal degree in co-relation 1251. Up to 386 conditions per place. [2023-01-27 22:35:14,791 INFO L137 encePairwiseOnDemand]: 811/816 looper letters, 36 selfloop transitions, 2 changer transitions 16/56 dead transitions. [2023-01-27 22:35:14,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 56 transitions, 275 flow [2023-01-27 22:35:14,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 22:35:14,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 22:35:14,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1402 transitions. [2023-01-27 22:35:14,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42953431372549017 [2023-01-27 22:35:14,793 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1402 transitions. [2023-01-27 22:35:14,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1402 transitions. [2023-01-27 22:35:14,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:35:14,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1402 transitions. [2023-01-27 22:35:14,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 350.5) internal successors, (1402), 4 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) [2023-01-27 22:35:14,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 816.0) internal successors, (4080), 5 states have internal predecessors, (4080), 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) [2023-01-27 22:35:14,801 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 816.0) internal successors, (4080), 5 states have internal predecessors, (4080), 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) [2023-01-27 22:35:14,801 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 116 flow. Second operand 4 states and 1402 transitions. [2023-01-27 22:35:14,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 56 transitions, 275 flow [2023-01-27 22:35:14,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 56 transitions, 257 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-01-27 22:35:14,803 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 118 flow [2023-01-27 22:35:14,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=118, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2023-01-27 22:35:14,803 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2023-01-27 22:35:14,804 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 118 flow [2023-01-27 22:35:14,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 342.75) internal successors, (1371), 4 states have internal predecessors, (1371), 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) [2023-01-27 22:35:14,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:35:14,805 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] [2023-01-27 22:35:14,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 22:35:14,805 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)] === [2023-01-27 22:35:14,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:35:14,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1852307064, now seen corresponding path program 1 times [2023-01-27 22:35:14,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:35:14,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192064759] [2023-01-27 22:35:14,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:35:14,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:35:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:35:14,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:35:14,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:35:14,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192064759] [2023-01-27 22:35:14,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192064759] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 22:35:14,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 22:35:14,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 22:35:14,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792597455] [2023-01-27 22:35:14,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:35:14,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 22:35:14,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:35:14,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 22:35:14,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 22:35:14,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 816 [2023-01-27 22:35:14,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 308.25) internal successors, (1233), 4 states have internal predecessors, (1233), 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) [2023-01-27 22:35:14,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:35:14,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 816 [2023-01-27 22:35:14,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:35:15,051 INFO L130 PetriNetUnfolder]: 358/610 cut-off events. [2023-01-27 22:35:15,051 INFO L131 PetriNetUnfolder]: For 843/843 co-relation queries the response was YES. [2023-01-27 22:35:15,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1594 conditions, 610 events. 358/610 cut-off events. For 843/843 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2605 event pairs, 265 based on Foata normal form. 80/655 useless extension candidates. Maximal degree in co-relation 1573. Up to 389 conditions per place. [2023-01-27 22:35:15,054 INFO L137 encePairwiseOnDemand]: 811/816 looper letters, 35 selfloop transitions, 2 changer transitions 40/79 dead transitions. [2023-01-27 22:35:15,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 79 transitions, 385 flow [2023-01-27 22:35:15,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 22:35:15,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 22:35:15,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1587 transitions. [2023-01-27 22:35:15,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3889705882352941 [2023-01-27 22:35:15,057 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1587 transitions. [2023-01-27 22:35:15,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1587 transitions. [2023-01-27 22:35:15,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:35:15,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1587 transitions. [2023-01-27 22:35:15,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 317.4) internal successors, (1587), 5 states have internal predecessors, (1587), 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) [2023-01-27 22:35:15,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 816.0) internal successors, (4896), 6 states have internal predecessors, (4896), 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) [2023-01-27 22:35:15,066 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 816.0) internal successors, (4896), 6 states have internal predecessors, (4896), 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) [2023-01-27 22:35:15,066 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 118 flow. Second operand 5 states and 1587 transitions. [2023-01-27 22:35:15,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 79 transitions, 385 flow [2023-01-27 22:35:15,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 79 transitions, 374 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-27 22:35:15,068 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 136 flow [2023-01-27 22:35:15,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=136, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-01-27 22:35:15,069 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2023-01-27 22:35:15,069 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 136 flow [2023-01-27 22:35:15,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 308.25) internal successors, (1233), 4 states have internal predecessors, (1233), 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) [2023-01-27 22:35:15,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:35:15,070 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] [2023-01-27 22:35:15,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 22:35:15,070 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)] === [2023-01-27 22:35:15,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:35:15,070 INFO L85 PathProgramCache]: Analyzing trace with hash 896860092, now seen corresponding path program 1 times [2023-01-27 22:35:15,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:35:15,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084607661] [2023-01-27 22:35:15,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:35:15,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:35:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:35:15,169 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 22:35:15,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:35:15,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084607661] [2023-01-27 22:35:15,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084607661] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 22:35:15,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 22:35:15,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 22:35:15,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132479851] [2023-01-27 22:35:15,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:35:15,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 22:35:15,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:35:15,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 22:35:15,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 22:35:15,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 345 out of 816 [2023-01-27 22:35:15,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 354.0) internal successors, (1062), 3 states have internal predecessors, (1062), 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) [2023-01-27 22:35:15,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:35:15,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 345 of 816 [2023-01-27 22:35:15,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:35:15,295 INFO L130 PetriNetUnfolder]: 608/890 cut-off events. [2023-01-27 22:35:15,295 INFO L131 PetriNetUnfolder]: For 1285/1285 co-relation queries the response was YES. [2023-01-27 22:35:15,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2563 conditions, 890 events. 608/890 cut-off events. For 1285/1285 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2959 event pairs, 153 based on Foata normal form. 34/855 useless extension candidates. Maximal degree in co-relation 2540. Up to 569 conditions per place. [2023-01-27 22:35:15,299 INFO L137 encePairwiseOnDemand]: 813/816 looper letters, 52 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-01-27 22:35:15,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 298 flow [2023-01-27 22:35:15,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 22:35:15,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 22:35:15,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1085 transitions. [2023-01-27 22:35:15,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.443218954248366 [2023-01-27 22:35:15,301 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1085 transitions. [2023-01-27 22:35:15,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1085 transitions. [2023-01-27 22:35:15,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:35:15,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1085 transitions. [2023-01-27 22:35:15,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 361.6666666666667) internal successors, (1085), 3 states have internal predecessors, (1085), 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) [2023-01-27 22:35:15,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 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) [2023-01-27 22:35:15,308 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 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) [2023-01-27 22:35:15,308 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 136 flow. Second operand 3 states and 1085 transitions. [2023-01-27 22:35:15,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 298 flow [2023-01-27 22:35:15,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 54 transitions, 276 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-01-27 22:35:15,310 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 134 flow [2023-01-27 22:35:15,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-01-27 22:35:15,311 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2023-01-27 22:35:15,311 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 134 flow [2023-01-27 22:35:15,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 354.0) internal successors, (1062), 3 states have internal predecessors, (1062), 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) [2023-01-27 22:35:15,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:35:15,311 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] [2023-01-27 22:35:15,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 22:35:15,312 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)] === [2023-01-27 22:35:15,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:35:15,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1135704464, now seen corresponding path program 1 times [2023-01-27 22:35:15,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:35:15,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174395411] [2023-01-27 22:35:15,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:35:15,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:35:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:35:15,433 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 22:35:15,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:35:15,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174395411] [2023-01-27 22:35:15,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174395411] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 22:35:15,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 22:35:15,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 22:35:15,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993254390] [2023-01-27 22:35:15,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:35:15,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 22:35:15,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:35:15,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 22:35:15,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 22:35:15,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 816 [2023-01-27 22:35:15,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 310.25) internal successors, (1241), 4 states have internal predecessors, (1241), 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) [2023-01-27 22:35:15,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:35:15,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 816 [2023-01-27 22:35:15,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:35:15,556 INFO L130 PetriNetUnfolder]: 422/672 cut-off events. [2023-01-27 22:35:15,557 INFO L131 PetriNetUnfolder]: For 437/437 co-relation queries the response was YES. [2023-01-27 22:35:15,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1895 conditions, 672 events. 422/672 cut-off events. For 437/437 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2690 event pairs, 329 based on Foata normal form. 26/638 useless extension candidates. Maximal degree in co-relation 1872. Up to 622 conditions per place. [2023-01-27 22:35:15,560 INFO L137 encePairwiseOnDemand]: 809/816 looper letters, 37 selfloop transitions, 2 changer transitions 20/61 dead transitions. [2023-01-27 22:35:15,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 61 transitions, 325 flow [2023-01-27 22:35:15,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 22:35:15,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 22:35:15,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1569 transitions. [2023-01-27 22:35:15,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3845588235294118 [2023-01-27 22:35:15,564 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1569 transitions. [2023-01-27 22:35:15,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1569 transitions. [2023-01-27 22:35:15,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:35:15,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1569 transitions. [2023-01-27 22:35:15,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 313.8) internal successors, (1569), 5 states have internal predecessors, (1569), 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) [2023-01-27 22:35:15,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 816.0) internal successors, (4896), 6 states have internal predecessors, (4896), 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) [2023-01-27 22:35:15,571 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 816.0) internal successors, (4896), 6 states have internal predecessors, (4896), 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) [2023-01-27 22:35:15,571 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 134 flow. Second operand 5 states and 1569 transitions. [2023-01-27 22:35:15,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 61 transitions, 325 flow [2023-01-27 22:35:15,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 61 transitions, 323 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 22:35:15,573 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 152 flow [2023-01-27 22:35:15,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=152, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2023-01-27 22:35:15,574 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2023-01-27 22:35:15,574 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 152 flow [2023-01-27 22:35:15,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 310.25) internal successors, (1241), 4 states have internal predecessors, (1241), 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) [2023-01-27 22:35:15,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:35:15,575 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] [2023-01-27 22:35:15,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 22:35:15,575 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)] === [2023-01-27 22:35:15,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:35:15,576 INFO L85 PathProgramCache]: Analyzing trace with hash -797598496, now seen corresponding path program 1 times [2023-01-27 22:35:15,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:35:15,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83187589] [2023-01-27 22:35:15,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:35:15,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:35:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:35:15,786 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-27 22:35:15,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:35:15,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83187589] [2023-01-27 22:35:15,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83187589] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 22:35:15,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 22:35:15,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 22:35:15,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179177661] [2023-01-27 22:35:15,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:35:15,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 22:35:15,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:35:15,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 22:35:15,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 22:35:15,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 816 [2023-01-27 22:35:15,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 349.75) internal successors, (1399), 4 states have internal predecessors, (1399), 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) [2023-01-27 22:35:15,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:35:15,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 816 [2023-01-27 22:35:15,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:35:16,023 INFO L130 PetriNetUnfolder]: 1202/1737 cut-off events. [2023-01-27 22:35:16,023 INFO L131 PetriNetUnfolder]: For 1358/1358 co-relation queries the response was YES. [2023-01-27 22:35:16,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4953 conditions, 1737 events. 1202/1737 cut-off events. For 1358/1358 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6943 event pairs, 196 based on Foata normal form. 62/1667 useless extension candidates. Maximal degree in co-relation 4927. Up to 820 conditions per place. [2023-01-27 22:35:16,030 INFO L137 encePairwiseOnDemand]: 809/816 looper letters, 72 selfloop transitions, 12 changer transitions 0/84 dead transitions. [2023-01-27 22:35:16,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 84 transitions, 479 flow [2023-01-27 22:35:16,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 22:35:16,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 22:35:16,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1784 transitions. [2023-01-27 22:35:16,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4372549019607843 [2023-01-27 22:35:16,033 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1784 transitions. [2023-01-27 22:35:16,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1784 transitions. [2023-01-27 22:35:16,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:35:16,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1784 transitions. [2023-01-27 22:35:16,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 356.8) internal successors, (1784), 5 states have internal predecessors, (1784), 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) [2023-01-27 22:35:16,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 816.0) internal successors, (4896), 6 states have internal predecessors, (4896), 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) [2023-01-27 22:35:16,040 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 816.0) internal successors, (4896), 6 states have internal predecessors, (4896), 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) [2023-01-27 22:35:16,041 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 152 flow. Second operand 5 states and 1784 transitions. [2023-01-27 22:35:16,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 84 transitions, 479 flow [2023-01-27 22:35:16,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 84 transitions, 471 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-01-27 22:35:16,044 INFO L231 Difference]: Finished difference. Result has 53 places, 52 transitions, 264 flow [2023-01-27 22:35:16,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=264, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2023-01-27 22:35:16,045 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2023-01-27 22:35:16,045 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 52 transitions, 264 flow [2023-01-27 22:35:16,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 349.75) internal successors, (1399), 4 states have internal predecessors, (1399), 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) [2023-01-27 22:35:16,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:35:16,046 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] [2023-01-27 22:35:16,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 22:35:16,046 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)] === [2023-01-27 22:35:16,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:35:16,047 INFO L85 PathProgramCache]: Analyzing trace with hash 816445328, now seen corresponding path program 2 times [2023-01-27 22:35:16,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:35:16,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205276863] [2023-01-27 22:35:16,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:35:16,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:35:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:35:16,290 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-27 22:35:16,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:35:16,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205276863] [2023-01-27 22:35:16,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205276863] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:35:16,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782478649] [2023-01-27 22:35:16,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 22:35:16,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:35:16,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:35:16,293 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) [2023-01-27 22:35:16,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 22:35:16,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:35:16,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:35:16,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-27 22:35:16,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:35:16,532 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-27 22:35:16,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 22:35:16,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782478649] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 22:35:16,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 22:35:16,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-01-27 22:35:16,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324534913] [2023-01-27 22:35:16,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:35:16,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 22:35:16,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:35:16,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 22:35:16,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-01-27 22:35:16,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 345 out of 816 [2023-01-27 22:35:16,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 264 flow. Second operand has 5 states, 5 states have (on average 351.2) internal successors, (1756), 5 states have internal predecessors, (1756), 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) [2023-01-27 22:35:16,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:35:16,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 345 of 816 [2023-01-27 22:35:16,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:35:16,939 INFO L130 PetriNetUnfolder]: 2012/2903 cut-off events. [2023-01-27 22:35:16,940 INFO L131 PetriNetUnfolder]: For 5608/5608 co-relation queries the response was YES. [2023-01-27 22:35:16,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10811 conditions, 2903 events. 2012/2903 cut-off events. For 5608/5608 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 12744 event pairs, 283 based on Foata normal form. 38/2715 useless extension candidates. Maximal degree in co-relation 10781. Up to 1039 conditions per place. [2023-01-27 22:35:16,954 INFO L137 encePairwiseOnDemand]: 810/816 looper letters, 94 selfloop transitions, 19 changer transitions 0/113 dead transitions. [2023-01-27 22:35:16,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 113 transitions, 811 flow [2023-01-27 22:35:16,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 22:35:16,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 22:35:16,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2152 transitions. [2023-01-27 22:35:16,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4395424836601307 [2023-01-27 22:35:16,958 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2152 transitions. [2023-01-27 22:35:16,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2152 transitions. [2023-01-27 22:35:16,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:35:16,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2152 transitions. [2023-01-27 22:35:16,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 358.6666666666667) internal successors, (2152), 6 states have internal predecessors, (2152), 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) [2023-01-27 22:35:16,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 816.0) internal successors, (5712), 7 states have internal predecessors, (5712), 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) [2023-01-27 22:35:16,976 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 816.0) internal successors, (5712), 7 states have internal predecessors, (5712), 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) [2023-01-27 22:35:16,976 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 264 flow. Second operand 6 states and 2152 transitions. [2023-01-27 22:35:16,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 113 transitions, 811 flow [2023-01-27 22:35:16,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 113 transitions, 811 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 22:35:16,981 INFO L231 Difference]: Finished difference. Result has 62 places, 67 transitions, 491 flow [2023-01-27 22:35:16,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=491, PETRI_PLACES=62, PETRI_TRANSITIONS=67} [2023-01-27 22:35:16,983 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2023-01-27 22:35:16,983 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 67 transitions, 491 flow [2023-01-27 22:35:16,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 351.2) internal successors, (1756), 5 states have internal predecessors, (1756), 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) [2023-01-27 22:35:16,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:35:16,984 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] [2023-01-27 22:35:16,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 22:35:17,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:35:17,197 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)] === [2023-01-27 22:35:17,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:35:17,197 INFO L85 PathProgramCache]: Analyzing trace with hash -608069975, now seen corresponding path program 1 times [2023-01-27 22:35:17,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:35:17,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168851850] [2023-01-27 22:35:17,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:35:17,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:35:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:35:17,500 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 22:35:17,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:35:17,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168851850] [2023-01-27 22:35:17,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168851850] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 22:35:17,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 22:35:17,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 22:35:17,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410844078] [2023-01-27 22:35:17,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:35:17,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 22:35:17,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:35:17,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 22:35:17,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-01-27 22:35:17,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 816 [2023-01-27 22:35:17,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 67 transitions, 491 flow. Second operand has 5 states, 5 states have (on average 300.2) internal successors, (1501), 5 states have internal predecessors, (1501), 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) [2023-01-27 22:35:17,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:35:17,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 816 [2023-01-27 22:35:17,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:35:17,938 INFO L130 PetriNetUnfolder]: 1954/2936 cut-off events. [2023-01-27 22:35:17,938 INFO L131 PetriNetUnfolder]: For 15476/15935 co-relation queries the response was YES. [2023-01-27 22:35:17,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13055 conditions, 2936 events. 1954/2936 cut-off events. For 15476/15935 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 14108 event pairs, 1026 based on Foata normal form. 383/3016 useless extension candidates. Maximal degree in co-relation 13019. Up to 2440 conditions per place. [2023-01-27 22:35:17,958 INFO L137 encePairwiseOnDemand]: 811/816 looper letters, 55 selfloop transitions, 2 changer transitions 40/108 dead transitions. [2023-01-27 22:35:17,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 108 transitions, 928 flow [2023-01-27 22:35:17,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 22:35:17,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 22:35:17,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1534 transitions. [2023-01-27 22:35:17,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37598039215686274 [2023-01-27 22:35:17,961 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1534 transitions. [2023-01-27 22:35:17,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1534 transitions. [2023-01-27 22:35:17,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:35:17,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1534 transitions. [2023-01-27 22:35:17,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 306.8) internal successors, (1534), 5 states have internal predecessors, (1534), 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) [2023-01-27 22:35:17,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 816.0) internal successors, (4896), 6 states have internal predecessors, (4896), 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) [2023-01-27 22:35:17,967 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 816.0) internal successors, (4896), 6 states have internal predecessors, (4896), 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) [2023-01-27 22:35:17,967 INFO L175 Difference]: Start difference. First operand has 62 places, 67 transitions, 491 flow. Second operand 5 states and 1534 transitions. [2023-01-27 22:35:17,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 108 transitions, 928 flow [2023-01-27 22:35:17,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 108 transitions, 901 flow, removed 13 selfloop flow, removed 1 redundant places. [2023-01-27 22:35:17,976 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 496 flow [2023-01-27 22:35:17,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=496, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2023-01-27 22:35:17,977 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 32 predicate places. [2023-01-27 22:35:17,978 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 496 flow [2023-01-27 22:35:17,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 300.2) internal successors, (1501), 5 states have internal predecessors, (1501), 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) [2023-01-27 22:35:17,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:35:17,978 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] [2023-01-27 22:35:17,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 22:35:17,979 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)] === [2023-01-27 22:35:17,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:35:17,979 INFO L85 PathProgramCache]: Analyzing trace with hash 912604163, now seen corresponding path program 1 times [2023-01-27 22:35:17,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:35:17,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434583860] [2023-01-27 22:35:17,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:35:17,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:35:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:35:18,132 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-27 22:35:18,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:35:18,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434583860] [2023-01-27 22:35:18,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434583860] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:35:18,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33814010] [2023-01-27 22:35:18,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:35:18,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:35:18,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:35:18,135 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) [2023-01-27 22:35:18,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 22:35:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:35:18,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 22:35:18,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:35:18,327 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-27 22:35:18,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:35:18,357 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-27 22:35:18,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33814010] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 22:35:18,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 22:35:18,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2023-01-27 22:35:18,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702116045] [2023-01-27 22:35:18,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:35:18,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 22:35:18,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:35:18,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 22:35:18,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-01-27 22:35:18,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 816 [2023-01-27 22:35:18,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 496 flow. Second operand has 5 states, 5 states have (on average 296.4) internal successors, (1482), 5 states have internal predecessors, (1482), 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) [2023-01-27 22:35:18,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:35:18,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 816 [2023-01-27 22:35:18,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:35:18,685 INFO L130 PetriNetUnfolder]: 1719/2553 cut-off events. [2023-01-27 22:35:18,685 INFO L131 PetriNetUnfolder]: For 12555/12938 co-relation queries the response was YES. [2023-01-27 22:35:18,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11294 conditions, 2553 events. 1719/2553 cut-off events. For 12555/12938 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 12145 event pairs, 985 based on Foata normal form. 242/2527 useless extension candidates. Maximal degree in co-relation 11254. Up to 2389 conditions per place. [2023-01-27 22:35:18,701 INFO L137 encePairwiseOnDemand]: 811/816 looper letters, 54 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2023-01-27 22:35:18,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 69 transitions, 614 flow [2023-01-27 22:35:18,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 22:35:18,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 22:35:18,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1486 transitions. [2023-01-27 22:35:18,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3642156862745098 [2023-01-27 22:35:18,704 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1486 transitions. [2023-01-27 22:35:18,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1486 transitions. [2023-01-27 22:35:18,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:35:18,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1486 transitions. [2023-01-27 22:35:18,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 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) [2023-01-27 22:35:18,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 816.0) internal successors, (4896), 6 states have internal predecessors, (4896), 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) [2023-01-27 22:35:18,710 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 816.0) internal successors, (4896), 6 states have internal predecessors, (4896), 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) [2023-01-27 22:35:18,710 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 496 flow. Second operand 5 states and 1486 transitions. [2023-01-27 22:35:18,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 69 transitions, 614 flow [2023-01-27 22:35:18,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 69 transitions, 594 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-01-27 22:35:18,720 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 492 flow [2023-01-27 22:35:18,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=492, PETRI_PLACES=68, PETRI_TRANSITIONS=69} [2023-01-27 22:35:18,720 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 32 predicate places. [2023-01-27 22:35:18,720 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 492 flow [2023-01-27 22:35:18,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 296.4) internal successors, (1482), 5 states have internal predecessors, (1482), 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) [2023-01-27 22:35:18,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:35:18,721 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] [2023-01-27 22:35:18,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 22:35:18,931 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,SelfDestructingSolverStorable9 [2023-01-27 22:35:18,931 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)] === [2023-01-27 22:35:18,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:35:18,932 INFO L85 PathProgramCache]: Analyzing trace with hash 874019100, now seen corresponding path program 1 times [2023-01-27 22:35:18,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:35:18,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380688964] [2023-01-27 22:35:18,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:35:18,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:35:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:35:19,123 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-27 22:35:19,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:35:19,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380688964] [2023-01-27 22:35:19,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380688964] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:35:19,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544005799] [2023-01-27 22:35:19,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:35:19,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:35:19,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:35:19,124 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) [2023-01-27 22:35:19,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 22:35:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:35:19,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 22:35:19,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:35:19,335 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-27 22:35:19,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:35:19,414 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-27 22:35:19,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544005799] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:35:19,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:35:19,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 5] total 9 [2023-01-27 22:35:19,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814930986] [2023-01-27 22:35:19,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:35:19,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 22:35:19,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:35:19,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 22:35:19,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-01-27 22:35:19,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 816 [2023-01-27 22:35:19,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 492 flow. Second operand has 9 states, 9 states have (on average 348.55555555555554) internal successors, (3137), 9 states have internal predecessors, (3137), 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) [2023-01-27 22:35:19,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:35:19,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 816 [2023-01-27 22:35:19,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:35:19,858 INFO L130 PetriNetUnfolder]: 1941/2822 cut-off events. [2023-01-27 22:35:19,859 INFO L131 PetriNetUnfolder]: For 9364/9364 co-relation queries the response was YES. [2023-01-27 22:35:19,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12150 conditions, 2822 events. 1941/2822 cut-off events. For 9364/9364 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 12066 event pairs, 70 based on Foata normal form. 116/2716 useless extension candidates. Maximal degree in co-relation 12110. Up to 1326 conditions per place. [2023-01-27 22:35:19,874 INFO L137 encePairwiseOnDemand]: 809/816 looper letters, 101 selfloop transitions, 31 changer transitions 0/132 dead transitions. [2023-01-27 22:35:19,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 132 transitions, 1103 flow [2023-01-27 22:35:19,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 22:35:19,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 22:35:19,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2489 transitions. [2023-01-27 22:35:19,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43574929971988796 [2023-01-27 22:35:19,878 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2489 transitions. [2023-01-27 22:35:19,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2489 transitions. [2023-01-27 22:35:19,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:35:19,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2489 transitions. [2023-01-27 22:35:19,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 355.57142857142856) internal successors, (2489), 7 states have internal predecessors, (2489), 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) [2023-01-27 22:35:19,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 816.0) internal successors, (6528), 8 states have internal predecessors, (6528), 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) [2023-01-27 22:35:19,887 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 816.0) internal successors, (6528), 8 states have internal predecessors, (6528), 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) [2023-01-27 22:35:19,887 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 492 flow. Second operand 7 states and 2489 transitions. [2023-01-27 22:35:19,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 132 transitions, 1103 flow [2023-01-27 22:35:19,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 132 transitions, 1095 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-01-27 22:35:19,899 INFO L231 Difference]: Finished difference. Result has 73 places, 84 transitions, 762 flow [2023-01-27 22:35:19,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=762, PETRI_PLACES=73, PETRI_TRANSITIONS=84} [2023-01-27 22:35:19,900 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 37 predicate places. [2023-01-27 22:35:19,900 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 84 transitions, 762 flow [2023-01-27 22:35:19,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 348.55555555555554) internal successors, (3137), 9 states have internal predecessors, (3137), 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) [2023-01-27 22:35:19,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:35:19,901 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] [2023-01-27 22:35:19,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-27 22:35:20,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:35:20,106 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:35:20,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:35:20,107 INFO L85 PathProgramCache]: Analyzing trace with hash 216142454, now seen corresponding path program 2 times [2023-01-27 22:35:20,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:35:20,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771719052] [2023-01-27 22:35:20,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:35:20,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:35:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:35:20,905 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 22:35:20,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:35:20,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771719052] [2023-01-27 22:35:20,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771719052] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:35:20,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048212947] [2023-01-27 22:35:20,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 22:35:20,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:35:20,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:35:20,907 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) [2023-01-27 22:35:20,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 22:35:21,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:35:21,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:35:21,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 61 conjunts are in the unsatisfiable core [2023-01-27 22:35:21,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:35:21,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 22:35:21,269 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-27 22:35:21,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-01-27 22:35:21,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-01-27 22:35:21,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 22:35:21,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-27 22:35:21,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-27 22:35:21,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 22:35:21,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 22:35:21,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:35:21,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2023-01-27 22:35:21,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:35:21,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2023-01-27 22:35:21,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 22:35:21,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 22:35:21,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 22:35:21,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 22:35:21,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:35:21,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2023-01-27 22:35:21,947 INFO L321 Elim1Store]: treesize reduction 69, result has 41.0 percent of original size [2023-01-27 22:35:21,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 107 treesize of output 92 [2023-01-27 22:35:21,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 53 [2023-01-27 22:35:21,966 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:35:21,968 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:35:21,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 48 [2023-01-27 22:35:21,986 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 22:35:21,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:35:22,707 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:35:22,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 199 treesize of output 188 [2023-01-27 22:35:22,732 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:35:22,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2618 treesize of output 2602 [2023-01-27 22:35:22,758 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:35:22,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 1282 treesize of output 1102 [2023-01-27 22:35:22,792 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:35:22,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 14850 treesize of output 14610 [2023-01-27 22:35:22,836 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:35:22,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 902 treesize of output 886 [2023-01-27 22:35:22,855 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:35:22,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 878 treesize of output 862 [2023-01-27 22:35:22,875 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:35:22,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 854 treesize of output 814 [2023-01-27 22:35:22,898 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:35:22,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 806 treesize of output 766 [2023-01-27 22:35:22,903 INFO L208 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-01-27 22:35:22,922 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:35:22,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 390 treesize of output 387 [2023-01-27 22:35:22,949 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:35:22,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 378 treesize of output 375 [2023-01-27 22:37:40,595 WARN L222 SmtUtils]: Spent 10.27s on a formula simplification. DAG size of input: 2628 DAG size of output: 2635 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-27 22:39:51,772 WARN L222 SmtUtils]: Spent 23.87s on a formula simplification. DAG size of input: 4123 DAG size of output: 4130 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-27 22:40:32,231 WARN L222 SmtUtils]: Spent 32.19s on a formula simplification. DAG size of input: 4101 DAG size of output: 4166 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-27 22:46:25,904 WARN L222 SmtUtils]: Spent 11.78s on a formula simplification that was a NOOP. DAG size: 10187 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-27 22:47:58,974 WARN L222 SmtUtils]: Spent 1.24m on a formula simplification. DAG size of input: 7070 DAG size of output: 7073 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-27 22:48:17,845 WARN L222 SmtUtils]: Spent 9.14s on a formula simplification that was a NOOP. DAG size: 7062 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-01-27 22:48:35,689 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-27 22:48:35,691 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-27 22:48:35,689 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 22:48:35,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-01-27 22:48:35,733 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 22:48:35,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:48:35,891 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 36 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 39 for 4ms.. [2023-01-27 22:48:35,892 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-27 22:48:35,893 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-27 22:48:35,893 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-27 22:48:35,893 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:48:35,895 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 22:48:35,895 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 22:48:35,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 10:48:35 BasicIcfg [2023-01-27 22:48:35,896 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 22:48:35,897 INFO L158 Benchmark]: Toolchain (without parser) took 814298.46ms. Allocated memory was 492.8MB in the beginning and 1.3GB in the end (delta: 769.7MB). Free memory was 450.4MB in the beginning and 878.6MB in the end (delta: -428.1MB). Peak memory consumption was 794.4MB. Max. memory is 16.0GB. [2023-01-27 22:48:35,897 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 339.7MB. Free memory is still 285.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 22:48:35,897 INFO L158 Benchmark]: CACSL2BoogieTranslator took 227.07ms. Allocated memory is still 492.8MB. Free memory was 450.1MB in the beginning and 437.0MB in the end (delta: 13.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-27 22:48:35,897 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.26ms. Allocated memory is still 492.8MB. Free memory was 437.0MB in the beginning and 434.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 22:48:35,897 INFO L158 Benchmark]: Boogie Preprocessor took 31.16ms. Allocated memory is still 492.8MB. Free memory was 433.7MB in the beginning and 431.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 22:48:35,897 INFO L158 Benchmark]: RCFGBuilder took 684.79ms. Allocated memory is still 492.8MB. Free memory was 431.3MB in the beginning and 441.7MB in the end (delta: -10.4MB). Peak memory consumption was 47.2MB. Max. memory is 16.0GB. [2023-01-27 22:48:35,897 INFO L158 Benchmark]: TraceAbstraction took 813315.80ms. Allocated memory was 492.8MB in the beginning and 1.3GB in the end (delta: 769.7MB). Free memory was 440.6MB in the beginning and 878.6MB in the end (delta: -437.9MB). Peak memory consumption was 782.8MB. Max. memory is 16.0GB. [2023-01-27 22:48:35,898 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 339.7MB. Free memory is still 285.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 227.07ms. Allocated memory is still 492.8MB. Free memory was 450.1MB in the beginning and 437.0MB in the end (delta: 13.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 34.26ms. Allocated memory is still 492.8MB. Free memory was 437.0MB in the beginning and 434.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.16ms. Allocated memory is still 492.8MB. Free memory was 433.7MB in the beginning and 431.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 684.79ms. Allocated memory is still 492.8MB. Free memory was 431.3MB in the beginning and 441.7MB in the end (delta: -10.4MB). Peak memory consumption was 47.2MB. Max. memory is 16.0GB. * TraceAbstraction took 813315.80ms. Allocated memory was 492.8MB in the beginning and 1.3GB in the end (delta: 769.7MB). Free memory was 440.6MB in the beginning and 878.6MB in the end (delta: -437.9MB). Peak memory consumption was 782.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.7s, 347 PlacesBefore, 36 PlacesAfterwards, 374 TransitionsBefore, 35 TransitionsAfterwards, 4578 CoEnabledTransitionPairs, 8 FixpointIterations, 239 TrivialSequentialCompositions, 70 ConcurrentSequentialCompositions, 62 TrivialYvCompositions, 30 ConcurrentYvCompositions, 28 ChoiceCompositions, 429 TotalNumberOfCompositions, 5390 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4898, independent: 4841, independent conditional: 0, independent unconditional: 4841, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2627, independent: 2614, independent conditional: 0, independent unconditional: 2614, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4898, independent: 2227, independent conditional: 0, independent unconditional: 2227, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 2627, unknown conditional: 0, unknown unconditional: 2627] , Statistics on independence cache: Total cache size (in pairs): 67, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 139]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 36 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 39 for 4ms.. - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 36 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 39 for 4ms.. - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 36 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 39 for 4ms.. - TimeoutResultAtElement [Line: 133]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 36 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 39 for 4ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 423 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 813.2s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 418 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 418 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1241 IncrementalHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 1 mSDtfsCounter, 1241 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 216 GetRequests, 169 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=762occurred in iteration=11, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 416 NumberOfCodeBlocks, 416 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 469 ConstructedInterpolants, 0 QuantifiedInterpolants, 1079 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1571 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 16 InterpolantComputations, 10 PerfectInterpolantSequences, 85/91 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown